18 = 3(3x - 6)
Please answer with solving steps thanks!

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.

learn more about proportion here :

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Answer:

4

Step-by-step explanation:

1/2 of 24=12

1/3 of 12=4

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:

78 percent

Step-by-step explanation:

percent increase = (64-36)/36 ×100

= 28/36 ×100 = 0.78×100= 78

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:

D

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:-2.5

Step-by-step explanation:

The slope is -2.5

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:

12                                        

Step-by-step explanation: 60

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:

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:

(-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:

3x-5

Hope it Helps!!

.................

Answer:

x=−5/2or

Decimal Form:

x=−2.5

Explanation

Considering that all quadrilaterals are squares. When x varies 1 unity, y varies 5 units. So the slope is 5.

Answer:

the answer is D

Step-by-step explanation:

slope=rise÷run

from point A to B 1 right and 5 up, so both are positive

rise is up or down

run is left or right

slope=5÷1=5

so the answer is D

Answer:

432? I cannot tell if x is multiplication or a variable

Step-by-step explanation:

Answer:

6*18=108

18*12=216

36*15=540 so 216+540 addition first then subtracting so 215+540=755-180=575

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:

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:

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:

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:

24) x = 16

I am not sure about #25

Answer:

table: 3/4, 1

the ratio is 1 to 4

the ratio is 3 to 4

the ratio is 4 to 4

Answer:

3.6

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

5 + (2 * 4)

5 + 8 = 13

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: 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:

The graph is not visible

Step-by-step explanation:

Do something about it