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3 years ago

Please please help me with this

Mathematics

1 answer:

Lemur [1.5K]3 years ago

7 0

Answer:

Step-by-step explanation:

c appears to be the better description as the line on the left has a solid circle at x = 1 indicating it is defined for x ≤ 1

While the line on the right has an open circle at x = 1 indicating it is defined for x > 1

Both line segments have a negative slope, thus

y = - 2x + 1 x > 1

y = - x + 2 : x ≤ 1

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Given the function f(x) = √x-8 + 3 which of the following is the value of f(24)

kvasek [131]

Answer:

The answer is 7.

Step-by-step explanation:

You have to substitute the value of x into the function :

$f(x) = \sqrt{x - 8} + 3$

$f(24) = \sqrt{24 - 8} + 3$

$f(24) = \sqrt{16} + 3$

$f(24) = 4 + 3$

$f(24) = 7$

6 0

3 years ago

Help me, please lol i really need help

yan [13]

Answer:

honestly I THINK it's the first one

4 0

2 years ago

PLEASE HELP ME PLEASEEE!

Bezzdna [24]

In a right triangle with 45 degree angles the two sides are the same length. The hypotenuse is the length of the sides x sqrt(2)

The length of x = 3 and y = 3

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1 year ago

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

2 years ago

There is a rack of 11 billiard balls. Balls numbered 1 through 8 are solid-colored. Balls numbered 9 through 11 contain stripes

Dmitriy789 [7]

Answer:

Step-by-step explanation:

It should be 3 out of 11

3 0

2 years ago