The sum of x plus y is 68. If x=19, which equation can be used to find the value of y?

Answer:

We are given the distance covered by an elevator  = 310 feet.

Time taken to cover 310 feet = 10 seconds.

Rate of the elevator at it run = 310/10 = 31 feet per seconds.

We need to find how many feet an elevator can travel in 12 seconds.

In order to find the distance covered by an elevator in 12 seconds, we need to multiply 12 by the rate of the elevator.

Therefore, distance covered by the elevator in 12 seconds = 12 × 31

                                                                                                 = 372 feet.

Answer: use your big head

Step-by-step explanation:

Look It up

Answer: -1/0

Step-by-step explanation:

Answer:

D least common multiple 3

Step-by-step explanation:

I got it right

Answer:27.7

Step-by-step explanation:

the formula for a cone is V=1/3πr*2h

it is 1/3 because a cone is one-third of a sphere.

you then put the information from the text in the formula and you get this

V=1/3x 3.14 (pi) x 2.1 to the power of 2 (radius is half of a diameter)x 6 (height)

then you get the answer 27.6948

round to the nearest 10th and you get

A. 27.7

Also, I took the test.

There are 27.77 in³ of frosting is in the bag.

The amount of space, measured in cubic units, that an object or substance occupies.

Given that, To apply frosting to a cake, a baker twists a plastic bag containing the frosting into a cone shape with a diameter of 4.2 inches and a length of 6 inches.

Volume of cone = ¹/₃πr²h

r = 4.2/2 = 2.1 in

h = 6 in

Volume = ¹/₃x2.1x2.1x6

= 27.77

Hence, the volume of the cone is 27.77 in³

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Answer:

Justin weighs 165 pounds.

Greg weighs 180 pounds.

Answer:

B

Step-by-step explanation:

190-15=175

200/2=100

175-100=75

Answer:

I don't know if it's too advanced for you but you could use the arctangent function.

\(tan (x)=\frac{15}{8}\\ x=tan^{-1}(\frac{15}{8} )\\x= 61.9275\)

Answer:

c) 78 plants

Step-by-step explanation:

The total required is,

→ x = 143/11

→ [ x = 13 ]

Then number grew into plants,

→ 6 × x

→ 6 × 13

→ 78 plants

Hence, the option (c) is correct.

Answer: 78

Step-by-step explanation: 143 /11=13x6=78

Answer:-10.5+11 3/4

             (-4/5)÷(-2/3)

Explanation: Correct

Answer:

1

Step-by-step explanation:

anything divided by itself is 1

also when dividing exponets with the same base we subtract the exponet

7-7

0

and 8^0 is 1 because anything raised to the power of zero is 1

hopes this helps

Answer:

1

Step-by-step explanation:

8^7=8^7

A number divided by itself = 1

8^7=2097152

2097152/2097152=1

Answer:

z=2

Step-by-step explanation:

When you subtract a negative, you are adding the number, so the question simplify into 14= z + 12, which is 2

Brainliest Maybe?

Answer:

b

Step-by-step explanation:

how it works with life

Answer:

m= (b/4) -1

Step-by-step explanation:

b = 4(m + 1)

b/4 = m+1

(b/4) -1 = m

Answer:

m= (b/4) - 1

Step-by-step explanation:

You have to do the inverse of operations so times would be divide and add would be subtract.

Answer:

D is the right choice and no you cannot fit the pizza inside the box.

Step-by-step explanation:

D is the answer because to turn 2/3 into a decimal you would divide 2 by 3 and the answer you would get would be 0.66666666666...You would then add 12 to the answer and get 12.6666... Once you get this answer you would round it to the hundredths to get 12.67 but since that is not an option you could use D, 12.66 inches.

Answer:

I believe the answer is D.

Step-by-step explanation:

GOOGLE

Answer:

Step-by-step explanation:

QUESTION 7:

We are trying to find angles 1 and 2.

Known angle: 107˚.

In this question, we have 2 parallel lines with a transversal. A transversal is a line that passes through 2 parallel lines making it so that the angles on both sides are exactly the same.

Step 1: Find the measures of all the angles using the one we already know.

I will start with the angle adjacent (right next to) the angle that measures 107˚. As you can see, it is a supplementary angle because both of them form a straight line, or 180˚.

Therefore,

107+x= 180

x= 180-107

x= 73˚

Next, I will find the measure of the angle that is vertical to the one that measures 107˚. Note that angles that are vertical to each other are always identical, or in other words they have the same measure. Hence, the angle "vertical", or opposite to the one that measures 107˚ has to measure 107˚ as well.  You can also tell this is true because they look the same.

Now I'll find the measure of the angle vertical to the one that measures 73˚. As we know, vertical angles are identical, so the one vertical to it is 73˚.  

Here, I'll solve for angles 1 and 2. Like I said earlier, when a transversal crosses through 2 parallel lines, there will be 2 sets of angles that all have the same measurements.  

To solve for angle 1, simply know what angle is right below it, and that is the one that measures 107˚. (If you look at the 2 lines, you will see that both angle sets are essentially duplicates of each other.) Likewise, angle 2 has to be 73˚ because the one under it is also 73˚.

Angle 1: 107˚

Angle 2: 73˚

QUESTION 8:

Again, we have a transversal that passes through 2 parallel lines. One angle measures 95˚.  When there are 3 seperate angles along a straight line,  the one next to the one with the given measurement will be the same as that one.

So angle 3 is 95˚. To find angle 4, find the angle measurement that's vertical to angle 3, which is 95˚. Now, since that angle and angle 4 are supplementary (both form a straight line which is always 180˚), 95+x= 180.

(x stands for angle 4)

x+95= 180

x= 180-95

x= 85

Angle 4= 85˚.

QUESTION 9:

ANGLE 5: 49˚

When there is a transversal, there are 2 identical pairs of angles. Therefore, angle 5 must be 49˚.

ANGLE 6: 131˚

angle 5 and angle 6 form a straight line which means they are supplementary angles. Therefore, both angles must add up to 180˚. So 49+x= 180

x= 180-49= 131

(x stands for angle 6)

Hope this helps!! Also I worked pretty hard on this so brainliest would be appreciated :D

Practice problems if it helps :) : https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-angles-between-lines/e/parallel_lines_1

Answer:

Problems 1-8

A point reflection in the origin changes the signs of the x and y-coordinates. If both signs are not changed, it is false.

1. False

2. True

3. False

4. True

5. True

6. False

7. True

8. True

9. True

10. False

(3,2) isn’t a solution because it doesn't satisfy the equation also, the line on the graph doesn’t go through it .

We do same operations on both the sides so that equality of both expressions doesn't get disturbed.

Solving equations generally means finding the values of the variables used in it for which the considered equation is true.

The graph of the equation is given as y = -3/4x + 3.

We have to find if the point (3, 2) a solution to the equation.

So, we will subtitute the point to to satify the equation;

y = -3/4x + 3.

y = -3/4(3) + 3

y = -9 / 4 + 3

y = 3/3 = 1

Thus, (3,2) isn’t a solution because it doesn't satisfy the equation also, the line on the graph doesn’t go through it .

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Answer:✔ anyone.

✔ to persuade the reader.

Step-by-step explanation: got it right on edge

Answer:

D

Step-by-step explanation:

a,b,c are the same thing just in different forms so d is the right one.

also a is suppose to be a/1 i think for question d

Answer:

Mean = 33.7

Median = 34.5

Mode = 34

Range = 33

After adding 26....

mean decreases by 0.7

median decreases by 0.5

mode is 34

range is 33

Step-by-step explanation:

mean = sum of all the data values/number of data values

= (18 + 19 + 20  + 34 + 34 + 35 + 37 + 42 + 47 + 51)/10
= 337/10
= 33.7

To find median arrange the values in increasing order, find the mid value

If the number of data points is even, find the average of the mid 2 data values

Arranging data values we get:
18, 19, 20, 34, 34, 35, 37, 42, 47, 51

Since there are 10 data values, take the average of the middle two:
(34 + 35)/2 = 34.5

The mode is the value that occurs most often. We see that there are two instances of 34 whereas the other values appear only once

Mode = 34

The range is highest - lowest = 51 - 18 = 33

After we add 26, we get the following data set arranged

18, 19, 20, 26, 34, 34, 35, 37, 42, 47, 51

we can calculate the stats using the same technique as above

We get the following values

mean = )(18 + 19 + 20 + 26 + 34 + 34 + 35 + 37 + 42 + 47 + 51)/11
= 33  

median = 34

mode = 34

range = 51-18 = 33

To find the decrease in mean and median subtract from the first set of values

Answer:

12

Step-by-step explanation:

5+3=8

then

8÷2=4

then

4×3=12

Answer:

12

Step-by-step explanation:

Answer:

awnser B and fbe is 55

Step-by-step explanation:

the entire picture is 180 so cut in half there for 90 ok abfe is 90 so bigger section is always 55 and smaller is 35 ok

If the measure of ∠ABD is 6.2 times greater than the measure of ∠CBD=25° and if ∠ FBE and ∠ EBD are congruent then ∠ FBE =65°.

Given that the measure of ∠ ABD is 6.2 times greater than the measure of ∠ CBD and ∠ FBE and ∠ EBD are congruent.

We are required to find the measure of ∠ CBD and ∠ FBE.

∠ABD=6.2*∠CBD--------1

∠ABD+∠CBD=180°

6.2 ∠CBD+∠CBD=180  (From equation 1)

7.2 ∠CBD=180

∠CBD=180/7.2

∠CBD=25°

∠ABD=6.2*25

=155°

∠ABD=90+∠EBD

155=90+∠EBD

∠EBD=155-90

∠EBD=65°

Because ∠ FBE and ∠ EBD are congruent, ∠ FBE =65°.

Hence if the measure of ∠ABD is 6.2 times greater than the measure of ∠CBD=25° and if ∠ FBE and ∠ EBD are congruent then ∠ FBE =65°.

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For question 6 the answer is 91 just add the numbers

Answer:

7.07?

Step-by-step explanation:

Answer:

7.07 inches

Step-by-step explanation:

Answer:

5

Step-by-step explanation: y -5x so it will be five because you will add a 1 and it become 5

Answer:

5

Step-by-step explanation:

5 is next to the whole number next to the variable x making it a constant.