You have 15 coins, that are quarters and dimes. The total value of the coins is $2.40. How many quarters and how many dimes do you have?
Answers
Answer: 6 quarters, 9 dimes
Step-by-step explanation: So if one quarter equals 25 cents, and one dime equals ten the answer would be 9 dimes and 6 quarters. I know that you can fit 9 quarters in 2.40, but we have to add the dimes too and have 15 coins. So we now know that we can fit 6 quarters in 2.40 plus dimes. So 6*25=150, and we know that 6 quarters=1.50. 2.40-1.50=90, so 90 divided by ten equals 9.So, 6 quarters and 9 dimes.
Related Questions
Look for factors that will help you determine what type of economy exists in Country A.
Based on the clues in this passage, what type of economy does Country A have?
developed
developing
transitioning
command
Answers
developing:
a low GDP
an economy based on agriculture
Based on the limited information provided, it is not possible to definitively determine the type of economy in Country A. More specific details and factors would be necessary to make a conclusive determination.
The graph compares the weights in pounds of 100 dogs and cats that are brought in
to a veterinarian's office. Using the medians, how much more does a typical dog weigh than a typical cat?
Answers
Answer:20
Step-by-step explanation:this is wrong
Answer:
40
Step-by-step explanation:
subtract median of dogs and median of cats
Paula knits hats. The number of hats h she can knit varies directly with the amount of yarn (y) in yards she has. The constant of proportionality is 42. Write an equation to represent the relationship between the number of yards of yarn Paula has and the number of hats she can knit.
Answers
Answer:
y=42 or h=y/42
Step-by-step explanation:
Then the constant would be the number of yards of yarn required for each hat
What is the shape of the cross section of the figure that is perpendicular to the triangular bases and passes through a
vertex of the triangular bases?
A
a parallelogram that is not a rectangle
O a rectangle
O a triangle that must have the same dimensions as the bases
O a triangle that may not have the same dimensions as the bases
Answers
Answer:
a triangle that may not have the same dimensions as the bases
Step-by-step explanation:
The cross section of the figure that is perpendicular to the triangular bases and passes through a vertex of the triangular bases would be a triangle that may not have the same dimensions as the bases.
2x + 7y = 28
7x - 2y = 4
Answers
Answer:
Step-by-step explanation:
2x. X = 2. H4. 4=22. 7.(2-x) = x+1 mai. شاليها. • -x=x+1. + (3 - 3 x + 1 +. 6-3x = 4x + 4. Bebetto. 2=7x -. - 4-2=34+12. - ý 2=2y+12. +. 3X= 12-X.
Find the average of the following numbers.
$27,500.00 $28,500.00 $29,500.00
$30,500.00 $31,500.00
Answers
Answer:
$29,500.00 is the average
Step-by-step explanation:
Here is the formula to find the average
\(avg=\frac{s}{n}\)
Where
\(s\) is the sum of the terms
\(n\) is the number of terms
\(avg=\frac{27500.00+28500.00+29500.00+30500.00+31500.00}{5}\)
\(avg=\frac{147500.00}{5}\)
\(avg=29500\)
At the sewing store, Gina bought a bag of mixed buttons. The bag included 30 buttons, of which 70% were large. How many large buttons did Gina get?
Answers
Find the surface area of the triangular prism shown below.
64557
Answers
Answer:you just have to mutlkplaye 5 and 12 like what’s nine plus ten 21
Step-by-step explanation:
using d=rt , where d=distance r=rate and t=time how fast is a jogger moving if she travels 5.7 miles in 1.3 hours? to the nearest tenth
Answers
Answer:
\(r=4.38\)
Step-by-step explanation:
Step 1: Arrange the equation so that you are calculating rate (divide both sides by t)
\(\frac{d}{t} = \frac{rt}{t}\)
\(t\) cancels out on the right side.
Step 2: Substitute in the numerals
\(r=\frac{d}{t}\)
\(r=\frac{5.7}{1.3}\)
Step 3: Divide
\(r=4.38\) \(mph\)
There's your answer!
Hope this helps you!
NO LINKS!! Please assist me with this problem Part 2m
Answers
Answer:
\(\textsf{(a)} \quad \boxed{9a-3}\)
\(\textsf{(b)} \quad \boxed{-9a-3}\)
\(\textsf{(c)} \quad \boxed{-9a+3}\)
Step-by-step explanation:
Given function:
\(f(x) = 9x - 3\)
Part (a)
To find f(a), substitute x = a into the function:
\(\implies f(a)=9a-3\)
Part (b)
To find f(-a), substitute x = -a into the function:
\(\implies f(-a)=-9a-3\)
Part (c)
To find -f(a), first substitute x = a into the function:
\(\implies f(a)=9a-3\)
Then make the function negative:
\(\begin{aligned}\implies -f(a)&=-(9a-3)\\&=-9a+3 \end{aligned}\)
AB=[1+4.5]=5.5 describe and correct
Answers
The required solution is correct. AB = 5.5.
Given that,
AB=[1+4.5]=5.5
To describe the expression and to determine whether the expression is correct or not.
What is arithmetic?
In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,
here,
Simplifying the given expression, AB = 1 + 4.5
AB = 1 + 4.5
Addition property of alike terms
AB = 1.00 + 4.50
AB = 5.50
AB = 5.5
Thus, the required solution is correct. AB = 5.5
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Sharon is painting her house. she needs 5 gallons of brown paint for every 7 gallons of white paint. How many gallons of white paint does she need if she already bought 14 gallons of brown paint?
A. 10 gallons. B. 19.6 gallons
C. 16 gallons. D. 25 gallons
Answers
Answer:
19.6
Step-by-step explanation:
The ratio of brown paint to white paint is, 5:7 or \(\frac{5}{7}\) so if he bought 14 gallons of white paint we need to figure out:
\(\frac{5}{7} =\frac{14}{x}\)
which we can as it only has one unknown:
5x=14×7
5x=98
x=19.6
So the answer is 19.6
Answer:
B. 19.6 gallons
Step-by-step explanation:
5 Gallons of Brown ⇒ 7 Gallons of White
14 Gallons of Brown ⇒ x
x = 7 into 14 / 5
x = 98 / 5
x = 19.6
HOPE IT HELPS :)
takes 9 persons 8 hours to bake 150 cakes. How many hours does it take 12 persons to bake 375 cakes?
Answers
Answer:
15 hrs
Step-by-step explanation:
9 persons = 150/8 = 18.75 cakes/hr
12 persons = x
x = 12×18.75/9 = 25 cakes/hr
25 cakes = 1 hr
375 cakes = y
y = 375/25 = 15 hrs
Therefore it takes 15 hrs to bake 375 cakes.
please mark brainliest
xy+(z-x) x=3 y=2 z=4
Answers
3*2+(4-3)
=6+1
=7.
An electronics store offers students a discount
of 10% on purchases of computers. They
estimate that of computer sales are to
students. The average sale per customer is $498
and the store's profit is $80 before the discount.
What is the expected profit on the sale of a
computer?
show work
Answers
Answer:
83.9357% increase for the buyer
Step-by-step explanation:
Tiana is looking up her county's census data for a school project. Her county conducts a census every decade. She finds that the population was about 641,000 the year she was born, and that it had decreased to about 634,590 a decade later. Tiana reads that the population of the county is expected to continue decreasing each decade.
Write an exponential equation in the form y=a(b)x that can model the county population, y, x decades after Tiana was born.
Use whole numbers, decimals, or simplified fractions for the values of a and b.
y =
How many decades after Tiana was born will the county population fall below 600,000?
decades
Answers
The exponential function that can model the county population, y, x decades after Tiana was born, is:
\(y = 641000(0.99)^x\)
The population will fall below 600,000 in 6.6 decades after Tiana was born.
What is an exponential function?The definition of the exponential function is presented as follows:
\(y = a(b)^x\)
In which the parameters of the exponential function are presented as follows:
a is the initial value.b is the rate of change.In the context of this problem, the values of these parameters are given as follows:
a = 641000, which is the initial population.b = 634590/641000 = 0.99.Hence the function is:
\(y = 641000(0.99)^x\)
The population will fall below 600,000 when y = 600000, hence:
\(y = 641000(0.99)^x\)
\(600000 = 641000(0.99)^x\)
\((0.99)^x = \frac{600000}{641000}\)
\(\log{(0.99)^x} = \log{\left(\frac{600000}{641000}\right)}\)
\(x\log{0.99} = \log{\left(\frac{600000}{641000}\right)}\)
\(x = \frac{\log{\left(\frac{600000}{641000}\right)}}{\log{0.99}}\)
x = 6.6 decades.
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You deposit $300 in a savings account. The account earns. 1% simple interest per year. What is the interest earned after 3 years? The balance after 3 years?
Please help, urgent
Answers
Answer:
9.09, 309.09
Step-by-step explanation:
Year1 300x.01=3. Balance is 303/(300+3)
Year2 303x.01=3.03 balance is 306.03
Year3 306.03x.01=3.06 balance=309.09
Answer:
Interest earned = $9
Balance after 3 years = $309
Step-by-step explanation:
For simple interest, the formula is I = PRT, where I is the interest earned or paid, P is the principal amount borrowed/deposited, R is the rate as a decimal, and T is the time in years.
I = PRT
I = (300)(0.01)(3)
I = 9
Add that to the amount deposited to start, and you have the balance aftere 3 years. $300 + 9 = $309
Use the given conditions to write an equation for the line in the indicated form.
Passing through (2, 2) and perpendicular to the line whose equation is y = 4x + 7;
point-slope form
A)y=-4x-10
B)y-2=-1/4(x-2)
C)y-2=1/4(x+2)
D)y-2=1/4(x-2)
Answers
Answer:
B) y - 2 = (-1/4)(x - 2)
Step-by-step explanation:
Start with the equation of the given line: y = 4x + 7.
Determine the slope of the given line, which is 4.
Since the perpendicular line has a negative reciprocal slope, the perpendicular line's slope is -1/4.
Use the point-slope form of a linear equation: y - y₁ = m(x - x₁), where (x₁, y₁) is the given point and m is the slope.
Substitute the values x₁ = 2 and y₁ = 2 into the point-slope equation: y - 2 = (-1/4)(x - 2).
Simplify by distributing -1/4 to (x - 2): y - 2 = (-1/4)x + 1/2.
Add 2 to both sides to isolate y: y = (-1/4)x + 1/2 + 2.
Simplify further: y = (-1/4)x + 5/2.
The equation in point-slope form for the line passing through (2, 2) and perpendicular to y = 4x + 7 is y - 2 = (-1/4)(x - 2), which matches option B.
Given two independent random samples with the following results: n1=8x‾1=186s1=33 n2=7x‾2=171s2=23 Use this data to find the 90% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval.
Answers
Answer:
The point of estimate for the true difference would be:
\( 186-171= 15\)
And the confidence interval is given by:
\( (186-171) -1.77 \sqrt{\frac{33^2}{8} +\frac{23^2}{7}}= -10.753\)
\( (186-171) +1.77 \sqrt{\frac{33^2}{8} +\frac{23^2}{7}}= 40.753\)
Step-by-step explanation:
For this case we have the following info given:
\( \bar X_1 = 186\) the sample mean for the first sample
\( \bar X_2 = 171\) the sample mean for the second sample
\(s_1 =33\) the sample deviation for the first sample
\(s_2 =23\) the sample deviation for the second sample
\(n_1 = 8\) the sample size for the first group
\(n_2 = 7\) the sample size for the second group
The confidence interval for the true difference is given by:
\( (\bar X_1 -\bar X_2) \pm t_{\alpha/2}\sqrt{\frac{s^2_1}{n_1} +\frac{s^2_2}{n_2}}\)
We can find the degrees of freedom are given:
\( df = n_1 +n_2 -2 =8+7-2= 13\)
The confidence level is given by 90% so then the significance would be \(\alpha=1-0.9=0.1\) and \(\alpha/2=0.05\) we can find the critical value with the degrees of freedom given and we got:
\( t_{\alpha/2}= \pm 1.77\)
The point of estimate for the true difference would be:
\( 186-171= 15\)
And replacing into the formula for the confidence interval we got:
\( (186-171) -1.77 \sqrt{\frac{33^2}{8} +\frac{23^2}{7}}= -10.753\)
\( (186-171) +1.77 \sqrt{\frac{33^2}{8} +\frac{23^2}{7}}= 40.753\)
This is function notation and I have no idea how to do it. I need answers.
Answers
Answer:
So you are given the function, f(x) = 3x - 4. You will plug in the value given and solve and write the answer down in the box.
f(x) = 3x - 4 ---> f(5), f(2), f(1), f(10), and f(-1) value given
f(5) = 3(5) - 4
f(5) = 15 - 4
f(5) = 11
f(2) = 3(2) - 4
f(2) = 6 - 4
f(2) = 2
f(1) = 3(1) - 4
f(1) = 3 - 4
f(1) = -1
f(10) = 3(10) - 4
f(10) = 30 - 4
f(10) = 26
f(-1) = 3(-1) - 4
f(-1) = -3 - 4
f(-1) = -7
*Answers are bolded.*
Hope this helps, thank you :) !!
A population of 130,000 grows 5% per year for 14 years. How much will the population be after 14 years?
Answers
if you take 130000 x 0.05 = 6500
take 6500 x 14 = 91000
91000 + 130000 = 221000
White people: Yah my eyes are so cool they’re like sapphire blue, but then change to a rainforest green in the light, and sometimes they turn gray when I wear my favorite sweater, also they look indigo when I’m at Olive Garden
Answers
Answer:
free points i guess
Step-by-step explanation:
Answer:
Ummm okk I guess.........
How can I trust your guys
Answers
Answer:
Step-by-step explanation:
you just do, everyone in here needs help so i dont think theres people in here just messing arround, you can trust.
Answer:
because we are amazing as always.
Step-by-step explanation:
Please dont do this or i will report u.
bye
If each cup of berries cost $1.75, explain whether $10 would be enough to buy 6 cups of berries
Answers
Answer:
No
Step-by-step explanation:
1.75 x 6 = 10.5
$10.5 being more than $10 dollars, you couldn't buy 6 cups of berries with only 10 dollars.
Answer:
No it wouldnt be because 6 cups would equal $10.50
Step-by-step explanation:
You would have enough for 5 cups
the accompanying data set contains two variables, x1 and x2. pictureclick here for the excel data file a. how many observations have x2 values equal to 2?
Answers
The variables 8 observations have x2 values of 2 or greater.
Two variables, x1 and x2, are present in the supplementary data set. There are a total of 20 observations in this data set. The x2 values for 8 of these 20 observations are equal to 2. Thus, x2 values of two were present in eight out of twenty observations, or 40%. The following 12 observations' x2 values do not add up to 2. Thus, 8 of the 20 observations in the data set have x2 values of 2 or higher.8 of these 20 observations have x2 values that are equal to 2. Thus, eight out of twenty observations, or 40 percent, had x2 values equal to two. The x2 values for the next 12 observations are not equal to 2. Consequently, 8 of the data set's 20 observations have x2 values of 2 or above.
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Hello, how is 14.102 read, please help (:
Answers
Answer:
The first one
Step-by-step explanation:
....................
What is the result when 2.5(3x + 8) is subtracting from 1.5(2x - 5)
Answers
The resulting expression when 2.5(3x + 8) is subtracting from 1.5(2x - 5) is; 4.5x + 27.5.
Which expression results from subtracting 2.5(3x + 8) from 1.5(2x - 5)?Since the given expressions whose difference is to be determined are; 2.5(3x + 8) and 1.5(2x - 5).
On this note, the difference in the two expressions can be determined as follows;
2.5 ( 3x + 8 ) - 1.5 ( 2x - 5 )
= 7.5x + 20 - 3x + 7.5
= 4.5x + 27.5
Ultimately, the result of the subtraction is; 4.5x + 27.5.
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Question
A farmer notices that there is a linear relationship between the number of bean stalks, n, she plants and the yield, Y. When
she plants 3 stalks, each plant yields 115 ounces of beans. When she plants 8 stalks, each plant yields 190 ounces of beans.
Write the linear equation, Y(n), that correctly represents this situation.
Provide your answer below:
Y(n)=
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SUBMIT
Answers
The equation that represent the given situation is y = 15x + 70
When she plants 3 stalks, each plant yields 115 ounces of beans
The first point = (3, 115)
When she plants 8 stalks, each plant yields 190 ounces of beans
The second point = (8, 190)
The slope of the line m = \(\frac{y_2-y_1}{x_2-x_1}\)
Substitute the values in the equation
The slope of the line m = (190-115) / (8-3)
= 75/5
= 15
The point slope form is
\(y-y_1=m(x-x_1)\)
Choose one point and substitute the values in the equation
y - 115 = 15(x - 3)
y - 115 = 15x - 45
y = 15x - 45 + 115
y = 15x + 70
Hence, the equation that represent the given situation is y = 15x + 70
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Write the equation of a line that is parallel to y=−7 and that passes through the point (7,5)
Answers
According to the solution we have come to find that, The equation of the line that is parallel to y = -7 and passes through the point (7,5) is y = 5.
what is mean by parallel lines?
Parallel lines are two or more lines that are always the same distance apart and never intersect. In other words, they have the same slope and they will never meet, no matter how far they are extended in both directions. Parallel lines always remain equidistant from each other and never touch or intersect, even if they are extended to infinity.
For example, in a Cartesian coordinate system, two lines are parallel if and only if they have the same slope. If the slope of one line is m1 and the slope of another line is m2, then the two lines are parallel if m1 = m2.
The given equation is y = -7, which is a horizontal line parallel to the x-axis. Since we need to find the equation of a line parallel to this line, the slope of the new line will also be zero.
To find the equation of the new line, we need to use the point-slope form of the equation, which is:
y - y1 = m(x - x1)
where (x1, y1) is the given point and m is the slope of the line.
Substituting the values of the given point and slope, we get:
y - 5 = 0(x - 7)
y - 5 = 0
y = 5
So, the equation of the line that is parallel to y = -7 and passes through the point (7,5) is y = 5.
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A pancake mix requires 2 cups of flour for every 10 pancakes. How much flour is used per pancake?
A 1/10
10
B. 1/5
cup
5
C. 1/2
cup
D. 5/1
cup