Solve the system of equations using elimination. SHOW WORK!!!!!!!!!!!!!

15q – 4r = 62
5q + 8r = 86

Answer:

D

Step-by-step explanation:

7x - 4 = -18            (add 4 to both sides)

7x = -14                  (divide both sides by 7)

x = -2

the answer is D

Answer:

12                                        

Step-by-step explanation: 60

Answer:

2, 5,6

Step-by-step explanation:

Answer:

2, 5, 6

Step-by-step explanation:

plz give me brainliest, i have no more and i need to level up

Answer:

78 percent

Step-by-step explanation:

percent increase = (64-36)/36 ×100

= 28/36 ×100 = 0.78×100= 78

Answer:

x=-[tex]\frac{24}{51}[/tex]

Step-by-step explanation:

-3x+24=48x

-3x-48x=-24

-51x=24

x=-[tex]\frac{24}{51}[/tex]

Answer:

I believe the measurement of angle 5, would be 114.

Step-by-step explanation:

We can solve this by using alternate interior angles. First we must find the other alternate interior angle for angle 5. To do this we take 66 and subtract it from 180. We now find that the angle adjacent to the angle measuring 66 degrees is equal to 114 degrees.  Now, the angle we just found the measurements for, is the alternate interior angle for angle 5. Therefore, since they are alternate interior angles, angle 5 is equal to 114 degrees.

I hope this helps!

Answer:

52 seeds.

Step-by-step explanation:

So, 3/4 of his plants have grown. SO, 3/4 = 39 plants, and if we divide by 3, we get 1/4 of the plants are 13 plants. SO, if we want to find 4/4, we can multiply 13*4=52 seeds.

Quincey planted 52 seeds in total.

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

75% grew into mature plants.

If Quincey has 39 tomato plants in his garden.

let x number of seed he planted.

So, 75% of x= 39

75x/100= 39

75x = 3900

x = 52

Hence, He planted 52 seeds.

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Answer:

24) x = 16

I am not sure about #25

Answer:

A)  x = 8[tex]\sqrt{2}[/tex]

Step-by-step explanation:

in a 45-45-90 triangle, the legs to hypotenuse ratio is 1 : [tex]\sqrt{2}[/tex]

so in this problem the leg is 8 and the hypotenuse is 8[tex]\sqrt{2}[/tex]

Answer:

Part a: 2.5

Part b: The rate the oil fills the tank

Part c: The amount of liquid in the tank to begin with.

Hope this helps. :)

As per the graph that shows the volume of oil in tank T sec.

The given graph describes the volume of the oil in L and shows the value in t seconds. The gradient of the graph is about 2.5 and it shows us the amount of liquid in the tank. The value of the graph that intersects at the L 2 is the amount of liquid found in the tank.

Find out more information about the graph.

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Answer:

0.07142857142

Step-by-step explanation:

Answer:

x = [tex]\sqrt{10}[/tex]

Step-by-step explanation:

The 2 right triangles and the outer right triangle are similar, then ratios of corresponding sides are equal, that is

[tex]\frac{x}{5}[/tex] = [tex]\frac{2}{x}[/tex] ( cross- multiply )

x² = 10 ( take the square root of both sides )

x = [tex]\sqrt{10}[/tex]

Answer:

√10

Step-by-step explanation:

taking the smallest triangle;

y as the hypotenuse, x as the adjacent side, 2 as the opposite side

then: y²=x²+2²

x²=y²-2²= y²-4

taking the other triangle;

z as the hypotenuse, x as the adjacent side, 5 as the opposite side

then: z²=x²+5²

x²=z²-5² = z²-25

take both equations,

x²= y²-4

x²= z²-25

y²-4= z²-25

y²= z²-25+4 = z²-21

taking the biggest triangle (whole triangle);

(5+2)= 7 as the hypotenuse, z as the adjacent side, y as the opposite side

then; 7²=z²+y²

z²+y²=7² =49

but y²= z²-21;

z²+y² =49

z²+ z²-21 =49

2z²-21=49

2z²=49+21= 70

z²= 70/2 = 35

take x²= z²-25

x²= 35-25 = 10

[tex]x = \sqrt{10} [/tex]

Answer: 0.1056

Step-by-step explanation:

Given: Chipotle Burritos are normal distributed with

Mean =  200 mm

Standard deviation = 8 mm

Let x be the length of a random burrito.

The probability that a burrito picked at random is shorter than 190mm will be :

[tex]P(x<190)=P(\dfrac{x-\mu}{\sigma}<\dfrac{190-200}{8})\\\\=P(z<-1.25)\ \ \ [z=\dfrac{x-\mu}{\sigma}]\\\\=1-P(z<1.25)\\\\=1-0.8944\\\\=0.1056[/tex]

Hence, the probability that a burrito picked at random is shorter than 190mm is 0.1056.

Answer:

The graph is not visible

Step-by-step explanation:

Do something about it

Answer:

13

Step-by-step explanation:

5 + (2 * 4)

5 + 8 = 13

Answer:

1.4

Step-by-step explanation:

-2.6---------------1.3

0.5 is between

-2.1 is between

1.4 is not between

-1.8 is between

Answer:

15 and 16

Step-by-step explanation:

i hop it helps

There are 15 boys in Ella's class and 16 boys in Minh's class.

A ratio is a comparison between two similar quantities in simplest form.

Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.

In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.

Given, The ratio of boys to girls in Ella's class is 3 to 4. The ratio of boys to girls in Minh's class is 4 to 5.

Each class has a total of 20 girls and assuming each class has a total of x students.

∴ 4x/7 = 20.

4x = 140.

x = 35.

No. of boys = 15.

5x/9 = 20.

5x = 180.

x = 36.

No. of boys = 16.

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Answer:

The first box plot is correct

Step-by-step explanation:

Answer:

Step-by-step explanation:

Lets analyze the dot plot and work out 5 numbers.

We see the minimum score is 18 and maximum score is 25, these are the two numbers.

The scores

Median of the data:

Lower half

Upper half

We now have 5 number summary:

Looking at the box plots, we see the first one is reflecting the numbers we got.

Answer:

well what are you eating?

Step-by-step explanation:

Answer:

bc I peed on it and bc of my stretchy cheese!!!!!!

Step-by-step explanation:

Answer:-2.5

Step-by-step explanation:

The slope is -2.5

Answer: f(2)=1

Step-by-step explanation:

This is a function-related problem. In order to solve f(2), you need to substitute the value into the original function.

-----------------------------------------------------------------------------------------

f(x)=5x⁵-3x⁴- 17x³-4x²+10x+21

f(2)=5(2)⁵-3(2)⁴- 17(2)³-4(2)²+10(2)+21

f(2)=160-48-136-16+20+21

f(2)=1

Hope this helps!!

Please let me know if you have any questions

Answer:

A

Step-by-step explanation:

I chose C on A P E X but it said the answer was A

The line is reflected it could be a result of the line or the point is congruent to the preimage. Hence the option A is correct.

A reflected line is a figure such as an image that is reflected when the image is congruent to the preimage. It point in the figure to the image across the fixed line. This fixed line is caleld as line of reflectance. It can done by coordinating the using the planes.

Find out more information about the reflected line.

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Answer:

Sorry didn't know everything

Step-by-step explanation:

1. b

2.

3. f

4. H

5.a

6.c

7.d

8.

9.

10. I

Answer:

1. x= 3

2. x= -30

3. x= 31/3

4. x= -3

5. x= 2

6. x= -24

7. x= -5

8. x= -55

9. x= -2

10. x= 4

Step-by-step explanation:

Answer:

(-1,3)

Step-by-step explanation:

[tex] - x + 2 = 3x + 6[/tex]

[tex] - x - 3x = 6 - 2[/tex]

[tex] - 4x = 4[/tex]

[tex]x = - 1[/tex]

[tex]y = - ( - 1) + 2 = 3[/tex]

Answer:

(-2,3)

Step-by-step explanation:

Multiply -3x+4y=18 with 2:

-6x+8y=36

Add -6x+8x=36 and 6x+2y=-6

10y=30

y=3

So y=3 we can replace y with 3 on any of these two equations:

6x+6=-6

Move the 6 to the other side:

6x=-12

x=-2

So the solution is

(-2,3)

Hope this helps

Answer:

4

Step-by-step explanation:

1/2 of 24=12

1/3 of 12=4

Step-by-step explanation:

1.The "9-trick".To add 9 to any number, first add 10 and then subtract 1

2.Double +1

3.use adittion facts when adding bigger number.

4.subtract by adding

5.five times a number

6.four and eight times a number

7.multiply in parts

im good in math