2 years ago

✨Help me out please ✨

Mathematics

1 answer:

alexira [117]2 years ago

8 0

First answer would be 18

You might be interested in

A painter has finished painting 45% of a really long fence. If she has painted 90 feet so far, how long is the entire fence?

frozen [14]

Answer:

90/45%=200

the entire fence is 200

6 0

2 years ago

Which ordered pair is a solution to the system of linear equations One-half x minus three-fourths y = StartFraction 11 Over 60 E

s344n2d4d5 [400]

Answer:

$\left(\dfrac{2}{3},\dfrac{1}{5}\right)$

Step-by-step explanation:

Given the system of two equations:

$\left\{\begin{array}{l}\dfrac{1}{2}x-\dfrac{3}{4}y=\dfrac{11}{60}\\ \\\dfrac{2}{5}x+\dfrac{1}{6}y=\dfrac{3}{10}\end{array}\right.$

Multiply the first equation and the second equation by 60 to get rid of fractions:

$\left\{\begin{array}{l}30x-45y=11\\ \\24x+10y=18\end{array}\right.$

Now multiply the first equation by 4 and the second equation by 5:

$\left\{\begin{array}{l}120x-180y=44\\ \\120x+50y=90\end{array}\right.$

Subtract them:

$(120x-180y)-(120x+50y)=44-90\\ \\120x-180y-120x-50y=-46\\ \\-230y=-46\\ \\y=\dfrac{46}{230}=\dfrac{1}{5}$

Substitute it into the first equation:

$30x-45\cdot \dfrac{1}{5}=11\\ \\30x-9=11\\ \\30x=11+9\\ \\30x=20\\ \\x=\dfrac{2}{3}$

The solution is $\left(\dfrac{2}{3},\dfrac{1}{5}\right)$

4 0

2 years ago

Read 2 more answers

15= 3-4a what is the value of a in the equation

anzhelika [568]

Answer:

Step-by-step explanation:

when 13 is subtracted from 5 we get 8

again when 8=2m

8/2=m

4=m

6 0

1 year ago

Read 2 more answers

Which expressions are equivalent to -7+3(-4e-3)?

nata0808 [166]

Answer:

Step-by-step explanation:

-7+3(-4e-3)

-7-12e-9

-16-12e

simplify

-4(3e+4)

4 0

2 years ago

What two numbers add to make 36 with one of the numbers being exactly twice the other? smaller number = and larger number =

worty [1.4K]

12 and 24
The equation is 2x + x =36
So 3x = 36
Then divide each side by 3
So x =12
That is the smaller number
Multiply it by 2 to get the bigger number since it's twice the number

5 0

2 years ago

Read 2 more answers