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3 years ago

Which equation matches the table

Mathematics

1 answer:

egoroff_w [7]3 years ago

5 0

Answer:

<h2>D. b = a + 4</h2><h2 /><h2>Hope that helps!</h2><h2 /><h2>-Sabrina</h2>

Step-by-step explanation:

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Linda can bicycle 48 miles in the same time as it takes her to walk 12 miles. She can ride 9 mph faster than she can walk. How f

Marrrta [24]

Answer:

$\frac{48}{r+9}=\frac{12}{r}$

Step-by-step explanation:

Let r represent Linda's walking rate.

We have been given that Linda can ride 9 mph faster than she can walk, so Linda's bike riding rate would be $t+9$ miles per hour.

$\text{Time}=\frac{\text{Distance}}{\text{Rate}}$

We have been given that Linda can bicycle 48 miles in the same time as it takes her to walk 12 miles.

$\text{Time while riding}=\frac{48}{r+9}$

$\text{Time taken while walking}=\frac{12}{r}$

Since both times are equal, so we will get:

$\frac{48}{r+9}=\frac{12}{r}$

Therefore, the equation $\frac{48}{r+9}=\frac{12}{r}$ can be used to solve the rates for given problem.

Cross multiply:

$48r=12r+108$

$48r-12r=12r-12r+108$

$36r=108$

$\frac{36r}{36}=\frac{108}{36}$

$r=3$

Therefore, Linda's walking at a rate of 3 miles per hour.

Linda's bike riding rate would be $t+9\Rightarrow 3+9=12$ miles per hour.

Therefore, Linda's riding the bike at a rate of 12 miles per hour.

7 0

3 years ago

Convert r = 8cos θ to rectangular form.

skelet666 [1.2K]

Answer:

Step-by-step explanation:

To convert from polar to rectangular form

• x = rcosΘ , y = rsinΘ

• r = $\sqrt{x^2+y^2}$ ⇒ r² = x² + y²

Given

r = 8cosΘ

r = 8 × $\frac{x}{r}$ ( multiply both sides by r )

r² = 8x, hence

x² + y² = 8x ⇒ D

8 0

4 years ago

Can someone help me please

monitta

This is an equilateral triangle because all the angles are the same. This means the sides will be the same as well.
2x + 33 = 9.
Minus both sides by 33.
2x = -24
Then, divide both sides by 2.
x = -12

5 0

3 years ago

Read 2 more answers

PLS help<br><br> 44-9+77 divided by 8=

Andrews [41]

Answer:

Step-by-step explanation:

44-9=35

35+77=122

122÷8=14

6 0

2 years ago

Read 2 more answers

Dillon deposited 3/4 of his paycheck into the bank. The deposit slip shows how much he deposited. ($46.50) Weite and solve an eq

Sliva [168]

3/4 is 75%. So 0.75x = $46.50, x = $62.00

6 0

3 years ago