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2 years ago

Pretty please help I’m timed

Mathematics

2 answers:

Aleks [24]2 years ago

7 0

Answer:

The first one

Step-by-step explanation:

Because the numbers line up...after the 5, before the -5, and after the -10

Alex2 years ago

3 0

Answer:

First one...

Step-by-step explanation:

Welp I mean if you look at the numbers -12, -3 and 7 you can see how they corrspoond to the points plotted on the first number line.

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Let k(w)= w+3/w+9. Find k^-1(-4)

DENIUS [597]

Answer:

$\displaystyle k^{-1} (-4) = -\frac{39}{5}$

Step-by-step explanation:

We are given the function:

$\displaystyle k(w) = \frac{w + 3}{w + 9}$

And we want to find k⁻¹(-4).

Recall that by the definition of inverse functions:

$\displaystyle \text{If } f(a) = b, \text{ then } f^{-1}(b) = a$

Let k⁻¹(-4) = x, where x is an unknown value. Then by definition, k(x) must equal -4.

So:

$\displaystyle k(x) = \frac{x+3}{x+9} = -4$

Solve for x:

$\displaystyle \begin{aligned} \frac{x+3}{x+9} &= -4 \\ \\ x+3 &= -4(x+9) \\ \\ x+3 &= -4x - 36 \\ \\ x &= -\frac{39}{5} \end{aligned}$

Hence, k(-39/5) = -4. By definition of inverse functions, then, k⁻¹(-4) = -39/5.

3 0

3 years ago

A town council wants to conduct a survey on town policies using a random sample of residents.

Verizon [17]

Answer:

C. Draw slips of paper with names of residents out of a large box.

Step-by-step explanation:

c is the only one where the results are truly random

sorry don't really know how to explain it rather than looking at the definition

3 0

3 years ago

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Find the missing endpoint if the midpoint of a segment is at (- 3, 4) and the other endpoint is at (1, 2) .

____ [38]

Answer:

(-7,6)

.....................

4 0

3 years ago

Carlos made a scale model of his house. The actual width is 30 feet, and the actual length is 45 feet. If the model has a width

olganol [36]

Hello!

Let's make a proportion:

$\frac{30}{45} = \frac{6}{x}$

Cross multiply

45 × 6 = 270

Divide by 30

270 ÷ 30 = 9

$\framebox {The length is 9 inches}$

3 0

3 years ago

I may or may not be dumb in the brain... I'll give brainliest to whoever answers first and correctly.

Marrrta [24]

Answer:

23 degrees

Step-by-step explanation:

6x + 42 = 180

x = 23

7 0

3 years ago

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