2 years ago

3(7 + x) verbal expression

Mathematics

1 answer:

Basile [38]2 years ago

4 0

Answer:

21+3x

Step-by-step explanation:

multiply the 3 by everything inside the parentheses

You might be interested in

2y-16=2x in slope intercept form

Ber [7]

Y=x+8 I’d your answer

4 0

2 years ago

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC =16 and DC=5 what is the length of BC in the simplest ra

Nana76 [90]

The length of BC is $4 \sqrt{5}$ .

Solution:

Given ABC is a right triangle.

AC is the hypotenuse and BD is the altitude.

AB and BC are legs of the triangle ABC.

AC = 16 and DC = 5

<u>Leg rule of geometric mean theorem:</u>

$\frac{\text { hypotenuse }}{\text { leg }}=\frac{\text { leg }}{\text { part }}$

$\Rightarrow \frac{AC}{BC}=\frac{BC}{DC}$

$\Rightarrow \frac{16}{x}=\frac{x}{5}$

Do cross multiplication.

$\Rightarrow 16\times 5 = x\times x$

$\Rightarrow 80= x^2$

$\Rightarrow 16\times 5= x^2$

Taking square root on both sides.

$\Rightarrow \sqrt{16\times 5} = \sqrt{x^2}$

$\Rightarrow \sqrt{4^2\times 5} = \sqrt{x^2}$

square and square roots get canceled, we get

$\Rightarrow 4\sqrt{ 5} = x$

The length of BC is $4 \sqrt{5}$ .

7 0

2 years ago

b. You have saved $15,000 for a down payment. What is the max you can spend (max house price)? (4 points)

In-s [12.5K]

Answer:

maybe like 5k

Step-by-step explanation:

6 0

2 years ago

HELP! Find the EXACT angle(s) on The Unit Circle (in radians) that would produce sinθ = −2√2

bazaltina [42]

Answer:

picture?

Step-by-step explanation:

4 0

2 years ago

joe is using his allowance money to download songs from the internet. he can download them at a rate of eight songs every 10 min

Mama L [17]

Joe: 8 songs in 10 minutes = 8/10 = 0.8 songs per minute

Jasmine: 12 songs in 15 minutes = 12/15 = 0.8 songs per minute

they are downloading at the same speed

7 0

3 years ago