(3x-15)(2x+7) what is x

Answer:

1.25

Step-by-step explanation:

Aba malay ko haha ta-nga ka

Considering the given figure the value of the angles are as follows

information given in the problem

ΔABC is isosceles with vertex B,

ΔEBD is isosceles with vertex B,

< ABE ≅ CBD, < BED = 57, < BAE = 38

Isosceles triangle are triangle that two sides and the two base angles equal

This means that

< BED + < EBD + < BDE = 180 (sum of angles in a triangle)

< EBD + 57 + 57 = 180

< EBD = 180 - 57 - 57

< EBD = 66 degrees

< ABC + < BAC + < BCA = 180 (sum of angles in a triangle)

< ABC + 38 + 38 = 180

< ABC = 180 - 38 - 38

< ABC = 104 degrees

< ABC = < ABE  + < CBD + < EBD

and < ABE ≅ < CBD (given)

say x = < ABE ≅ < CBD

104 = x + x  + 66 (adjacent angles)

104 - 66 = 2x

2x = 38

x = 19 degrees

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Answer:

(-5, 4) The x value is -5, and the y value is 4.

Answer: 7 h and 20 min

Step-by-step explanation:

The return trip: 50

And hour : 7

So 50/7= the total return trip

50/7 = about 7.1428

Round to nearest 10th

Equals 7.20 so 7 h and 20 min is the total time.

Answer: 165 miles

Step-by-step explanation: In order to figure out the answer, you must do 55 x 3 because he drove for 3 hours at 55 mph so you could break it up and go 50 x 3 to equal 150 and 5 x 3 to equal 15 and add those to get 165.

Answer:

The answer is 165miles

Step-by-step explanation:

\(distance = speed \times time\)

d=55×3

d=165 miles

Answer:

y = -3x + 1

Step-by-step explanation:

Perpendicular lines have opposite reciprocal slopes, so the slope will be -3.

Plug in the slope and given point into y = mx + b

y = mx + b

-5 = -3(2) + b

-5 = -6 + b

1 = b

Then, plug in the slope and y intercept into y = mx + b again:

y = -3x + 1 will be the equation of the line

The given number sequence is,

The largest number is 0.83.

Step-by-step explanation:

are you having problems with something if so message this guy

\(\sqrt{24}+\sqrt{27} ~~ \begin{cases} 24=2\cdot 2\cdot 2\cdot 3\\ \qquad 2^2\cdot 2\cdot 3\\ 27=3\cdot 3\cdot 3\\ \qquad 3^2\cdot 3 \end{cases}\implies \sqrt{2^2\cdot 2\cdot 3}+\sqrt{3^2\cdot 3} \\\\\\ 2\sqrt{2\cdot 3}+3\sqrt{3}\implies 2\sqrt{2}\cdot \sqrt{3}+3\sqrt{3}\implies \stackrel{\textit{common factoring}}{\underset{ \textit{\LARGE k} }{(2\sqrt{2}+3)} ~~ \sqrt{3}}\)

The coordinates of the vertices of X'Y'Z after a dilation of XYZ by a scale factor of 4 is X'(12, -16), Y'(24, 20) and Z'(32, -8).

A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size (bigger or smaller).

The basic formula to find the scale factor of a figure is expressed as,

Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape.

Given that, XYZ has vertices X(3, -4), Y(6, 5), and Z(8, -2).

Scale factor = 4

Here, X(3, -4)→4(3, -4)→X'(12, -16)

Y(6, 5)→4(6, 5)→Y'(24, 20)

Z(8, -2)→4(8, -2)→Z'(32, -8)

Therefore, the coordinates of the vertices of X'Y'Z after a dilation of XYZ by a scale factor of 4 is X'(12, -16), Y'(24, 20) and Z'(32, -8).

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Answer:

d

Step-by-step explanation:

Answer:

its d

Step-by-step explanation:

The percent change in Pilar's shell collection from the beginning of the day to the end is,  22.5%

Percentage is a way to express a number as a fraction of 100. It is often used to represent ratios and proportions in a more convenient and understandable form, especially in financial and statistical contexts. For example, 50% means 50 per 100, or half of a given quantity. It is denoted using the symbol "%".

Given that,

Pilar has 40 shells in her collection.

She collects 6 more shells in the morning and 3 more shells in the afternoon.

The percent change in Pilar's shell collection from the beginning of the day to the end = ?

At the beginning of the day, Pilar has 40 shells.

In the morning, she collects 6 more shells, bringing her total to

= 40 + 6

= 46 shells.

Then, in the afternoon, she collects 3 more shells, bringing her total to

=46 + 3

= 49 shells.

To find the percent change in Pilar's shell collection from the beginning of the day to the end, we can use the formula:

percent change = (final value - initial value) / initial value * 100%

Plugging in the values we have:

percent change = (49 - 40) / 40 x 100%

percent change = 9 / 40 x 100%

percent change = 22.5%

Therefore, there is a 22.5% increase in Pilar's shell collection from the beginning of the day to the end.

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Answer:

91090.1891892

Step-by-step explanation:

rounded it would be 91090

Answer:

D. Alice used empirical probability, Mark used theoretical probability.

Step-by-step explanation:

Alice used empirical probability because she actually flipped the coin 100 times but Mark assumed the coin was fair and didn't actually test it, using theoretical probability.

Answer:

\(\sum_{n = 1} 2*(-5)^{n-1}\)

Step-by-step explanation:

An arithmetic sequence is of the form:

\(A_n = A_{n-1} + d\)

While a geometric sequence is of the form:

\(A_n = A_{n-1}*r\)

notice that first, we have a change of sign in our sequence, so we already can discard the arithmetic sequence.

In fact, the pattern is kinda easy to see.

The first term is:

A₁ = 2

the second term is:

A₂ = -10

notice that:

A₂/A₍ = r = -10/2 = -5

The third term is:

A₃ = 50

the quotient between the third term and the second term is:

A₃/A₂ = 50/-10 = -5

Whit this we can already conclude that the n-th term of our sequence will be:

\(A_n = A_{n-1}*(-5)\)

Then the summation will be something like:

\(\sum_{n = 1} A_n = A_1 + A_2 + A_3 + ... = 2 - 10 + 50 - ...\)

We can write:

\(A_n = A_{n-1}*(-5) = (A_{n-2}*(-5))*(-5)) = A_1*(-5)^{n-1} = 2*(-5)^{n-1}\)

Then the summation is just:

\(\sum_{n = 1} 2*(-5)^{n-1}\)

Answer:

200

Step-by-step explanation:

12% is equal to 12/100

I would set up something like

12/100= 24/x

to get from 12 to 24, you have to multiply by 2.

do the same for 100 so 100 x 2= 200

The solution of given system of equations is (1/5, 6).

What is system of equation?

A set or group of equations that you solve all at once is referred to as a "system" of equations. The simplest linear system is one with two equations and two variables. Linear equations are simpler than non-linear equations because they graph as straight lines.

Given equations : 5x+y=7

                             20x+2=y

We can solve it by using substitution method:

Now, we have 5x+y=7

it can be written as,

         y = 7 - 5x .... equation 1

Similarly, we have 20x+2=y

can be written as,

           y = 20x+2 ..... equation 2

Subtracting equation 1 from equation 2

we get,  20x+2 - ( 7 - 5x ) = 0

             20x + 5x + 2 - 7 = 0

             25x = 5

               x = 1/5

Putting x=1/5 in equation 1,

we get, y = 20 × 1/5 + 2

               = 4 +2

               = 6

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i need the terms and definitions to answer this-

The researcher claim is invalid and the p-value based on alpha = 0.05 is   approx. = 0.

In the question ,

it is given that ,

a researches claims that per person yearly consumption (μ) is 52 gallons .

sample size (n) = 50 .

the mean of the consumption (x) = 56.3 .

the standard deviation (σ) is = 3.5 gallons .

the α = 0.05 .

let the null hypothesis ,

H₀ : μ = 52 and

H₁ : μ ≠ 52 .

the test statistics is : z = (x - μ)/(σ/√n)

the critical value ( rejection region ) : {z : |z| ≥ z₀.₀₂₅ = 1.96 }

So , z = (56.3 - 52)/(3.5/√50)

Simplifying further ,

we get ,

z = 8.69

We reject the null hypothesis H₀ , since the absolute value of the test statistics 8.69 is greater than the critical value 1.96 .

Since this is a two tailed test,  p-value must be multiplied by two

2 × P(z > 8.69) ≈  0

Since the p-value is less than α(0.05), So ,we reject the claim of the researcher that the mean yearly consumption of soft drinks per person is 52 gallons

Hence , the claim is not valid .

Therefore , The claim is invalid and p-value is ≈ 0 .

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Answer:93.75 miles

Step-by-step explanation:

Given

Distance between two cities is \(3.75\ inches\)

and Map 2 shows 2 inches is equal to \(50\ miles\)

So each inch is equal to \(25\ miles\)

So \(3.75\ in.\) measures

\(\Rightarrow =3.75\times 25=93.75\ miles\)

So cities are \(93.75\ miles\) apart

Answer:

-9

Step-by-step explanation:

dude just use some math app tbh, youre doing algebra it should give you answers faster than brainly can

Answer:

The United States form of government is a...

O Republic

can I please get the five points:)

Answer:

Republic

Step-by-step explanation:

Option B

I hope this helps :) if not let me know

9514 1404 393

Answer:

  (d)  a translation of 6 units down, a rotation, and then a reflection

Step-by-step explanation:

Dilation by any scale factor other than 1 will prevent the original being congruent with its image. The only answer choice with no dilation is the one shown above.

Answer: 14, 000 pounds

Step-by-step explanation:

Answer:

14000 POUNDS

= 1 TON = 2000 POUNDS

= 7 TON = 2000 X 7 = 14000 POUNDS

(HOPE IT HELPS U. PLS MARK IT AS A BRAINLIEST)

The rate of change of the graph is. And for every 2 pound, turkey will take 1 hour to thaw.

The speed at which something changes over time is its rate of change (ROC).

To find the average rate of change:

We will find the slope,

If a line passes through two points (x₁ ,y₁) and (x₂, y₂) ,

then the equation of line is

y - y₁ = (y₂- y₁) / (x₂ - x₁) x (x - x₁)

To find the slope;

m =  (y₂- y₁) / (x₂ - x₁)

From the graph, we have two points (10 , 5) and (20 , 10)

And the slope is,

m =  (y₂- y₁) / (x₂ - x₁)

m = (10 -5) / (20 - 10)

m = 5 / 10

m = 1/2

then the equation of line is

y - y₁ = (y₂- y₁) / (x₂ - x₁) x (x - x₁)

2y - 10 = x -10

y = x/2.

Take x = 2 then y = 1

That means, for every 2 pound, turkey will take 1 hour to thaw.

Therefore, the rate of change is 1/2. And for every 2 pound, turkey will take 1 hour to thaw.

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Answer:

Hope this helps ;)

Step-by-step explanation:

To find the time it takes the T-shirt to reach its maximum height, we need to find the value of t when the velocity of the T-shirt is zero, because at this point the T-shirt has reached its maximum height and starts falling back down. We can find the velocity of the T-shirt by taking the derivative of the height equation with respect to time:

v(t) = h'(t) = 72

The velocity of the T-shirt is a constant 72 feet per second, so it will never reach a velocity of zero and will never reach its maximum height. The T-shirt will keep going up indefinitely.

If the problem had specified that the T-shirt was launched with an initial upward velocity of -72 feet per second (meaning it was launched downward), then we could have found the time it takes the T-shirt to reach its maximum height by setting v(t) = 0 and solving for t. In this case, we would find that t = 1, so it would take the T-shirt 1 second to reach its maximum height. The maximum height would be h(1) = -16 + 72(1) + 6 = 62 feet.

The union of sets A and B is {1, 2, 3, 4, 5, 6, 7, 8}.

The union of two sets A and B is the set of all elements that are in A, or B, or both. In this case, the elements in set A are {1, 2, 3, 4, 5} and the elements in set B are {5, 6, 7, 8}.

To find the union of these sets, we simply combine all the elements from both sets but remove any duplicates.

Therefore, the answer that shows the union of sets A and B is {1, 2, 3, 4, 5, 6, 7, 8}, since it contains all the elements from both sets without any duplicates.

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Answer:

(a) Yes, E and F are independent events.

(b) P(E and F) = P(E)P(F) = (1/2)(1/2) = 1/4