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2 years ago

Heres an easy question. Solve this.

}{5}" alt="\frac{1}{5}" align="absmiddle" class="latex-formula">y = 10

Mathematics

1 answer:

Grace [21]2 years ago

3 0

Answer:

y=50

Step-by-step explanation:

$\frac{1}{5}$ y=10

y=10÷ $\frac{1}{5}$

=50

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Find the missing side lengths. *<br> 45°<br> 6

rjkz [21]

Answer:

Step-by-step explanation:

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3 years ago

HELP!! I NEED HELP ASAP

natita [175]

75 Shield Darters.

Explanation:
2+2+2+3+4+4+4+4+6+6+7+7+7+8+9 = 75

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3 years ago

Solve the solution by substitution.

strojnjashka [21]

Answer:

Step-by-step explanation:

Nothing further can be done with this topic. Please check the expression entered or try another topic.

Y = − 5 x + 13 , − 6 x + 6 y = 6

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3 years ago

Read 2 more answers

Homer and Mike were replacing the boards on Mike's old deck. Mike can do the job alone in 1 hour less time than Homer. They wor

zysi [14]

Answer: 19.65 hours

<u>Step-by-step explanation:</u>

Mike: $\frac{1}{x-1}\ \text{hours}$

Homer: $\frac{1}{x}\ \text{hours}$

The each work 7 hours plus Mike works 5 hours alone:

$7\bigg(\dfrac{1}{x-1}\bigg)+7\bigg(\dfrac{1}{x}\bigg)+5\bigg(\dfrac{1}{x-1}\bigg)=1\ job\\\\\\12\bigg(\dfrac{1}{x-1}\bigg)+7\bigg(\dfrac{1}{x}\bigg)=1\ job\\\\\\\bigg(\dfrac{12}{x-1}\bigg)+\bigg(\dfrac{7}{x}\bigg)=1\\\\\\(x)(x-1)\bigg(\dfrac{12}{x-1}\bigg)+(x)(x-1)\bigg(\dfrac{7}{x}\bigg)=1(x)(x-1)\\\\\\12(x) + 7(x-1)=x^2-x\\\\12x + 7x - 7 = x^2-x\\\\.\qquad \qquad \ \ 0=x^2-20x+7$

Use quadratic formula to solve for x:

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\.\quad=\dfrac{-(-20)\pm \sqrt{(-20)^2-4(1)(7)}}{2(1)}\\\\.\quad=\dfrac{20\pm \sqrt{400-28}}{2}\\\\.\quad=\dfrac{20\pm \sqrt{372}}{2}\\\\.\quad=\dfrac{20\pm 19.3}{2}\\\\.\quad=10\pm9.65\\\\.\quad=19.65\quad or\quad 0.35$

We know that 0.35 cannot be a valid answer since it took at least 12 hours to complete the job.

So, Homer can get 1 job done in 19.65 hours.

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3 years ago

A hot air balloon is at an elevation of 1,250 feet. Its elevation begins to change at a rate of -22.5 feet per minute. How many

Nataly_w [17]

Let y represent the number of feet and x represent the number of minutes. Convert 22 1/2 to decimal form: 22.5

y = -22.5x

Plug in -315 for y

-315 = -22.5x

divide both sides by -22.5

14 = x

It will take 14 minutes.

5 0

3 years ago