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3 years ago

15

22. Explain the Error Two students are playing a math game. The object of

1 answer:

irina1246 [14]3 years ago

4 0

He did not add them together 3+5+7 =15

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How do you find the missing side??

guapka [62]

Answer:

$\boxed{\ell = 12}.$

Step-by-step explanation:

Let $\ell$ denote the length of the missing side. Since $\triangle ABC$ and $\triangle AXY$ share one vertex and $\overline{XY}\parallel \overline{BC}$ , these triangles are similar. This means that:

$\dfrac{AX}{AB} = \dfrac{AY}{AC} \iff \dfrac{\ell}{18+\ell} = \dfrac{14}{14+21} \iff\dfrac{\ell}{18+\ell} = \dfrac{14}{35}.$

We now multiply both sides by $18+\ell$ and solve the equation:

$\dfrac{\ell}{18+\ell} = \dfrac{14}{35} \iff \ell = \dfrac{36}{5} + \dfrac{14}{35}\ell \iff \ell \left(1-\dfrac{14}{35}\right) = \dfrac{36}{5} \iff \dfrac{3}{5}\ell = \dfrac{36}{5}.$

So we now simply get:

$\boxed{\ell = \dfrac{36}{3} = 12}.$

4 0

3 years ago

Read 2 more answers

Which of the following is one of the cheapest routes to pass through each vertex once starting and ending with

Brut [27]

Answer:

240$

Step-by-step explanation:

$200

OCS

$230

$240

$310

ABCDA. $960

ACDBA. $900

ACBDA. $960 =240

5 0

4 years ago

What is the y-intercept of f(x)=3/5x<br> a. (1, 0)<br> b. (1, 3/5)<br> c. (0, 0)<br> d. (0, 1)

Digiron [165]

Answer
F(0)=0

I can put the work in the comments if you need it :)

4 0

3 years ago

Which is a possible way to rewrite the equation y=3x+3b to solve for b

alex41 [277]

3b=y+3x

To solve for B you need to put B before the equals sign

6 0

3 years ago

Read 2 more answers

Amy is 11 ⅚ years old. Camden is 1 ⅓ years younger than amy and Jane is 1 ¼ years younger than Camden How old is Jane

erastova [34]

Answer:

Jane is 9 1/4 years old

Step-by-step explanation:

Camden is 10 1/2 years old and Jane is (10 2/4 - 1 1/4) which equals 9 1/4 years

5 0

3 years ago