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3 years ago

Please answer & answer quickly please

Mathematics

1 answer:

nadezda [96]3 years ago

6 0

Answer:

-8p ≥ -56

=> p ≤ 7

Step-by-step explanation:

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SOMEONE PLEASE HELP!!

dsp73

Answer:

It's the first one I think

7 0

3 years ago

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If the function f(x) = mx + b has an inverse function, which statement must be true?

MakcuM [25]

we have

$f(x)=mx+b$

Find the inverse of f(x)

Let

$y=f(x)$

$y=mx+b$

Exchanges the variables x for y and y for x

$x=my+b$

isolate the variable y

$my=x-b$

$y=\frac{x-b}{m}$

Let

$f(x)^{-1} =y$

$f(x)^{-1}=\frac{x-b}{m}$ -----> inverse function

Hence

In the inverse function the denominator can not be zero, therefore the value of m can not be equal zero

<u>the answer is the option</u>

$m\neq 0$

7 0

3 years ago

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PLZ help me super really really fast

maria [59]

Answer:

A. 3 cm

Step-by-step explanation:

The smallest face has the sides 4 cm and 8 cm. If the water is 4 cm from its top, then the height of the water is $16-4=12$ cm and the volume of the water is

$V_{water}=4\cdot 8\cdot 12=384\ cm^3$

The largest face has the sides 8 cm and 16 cm. If the container is placed on its largest face, then the volume of the water is

$V_{water}=8\cdot 16\cdot h \ cm^3,$

where h is the height of the water.

Equate volumes of the water:

$8\cdot 16\cdot h=384\\ \\h=\dfrac{384}{8\cdot 16}=3\ cm$

Therefore, the water is 3 cm from the bottom.

4 0

3 years ago

What is the value of x in the equation -5/4x=-160

Ierofanga [76]

$\\ \sf \longmapsto \: - \frac{ 5}{4} x = - 160 \\ \\ \sf \longmapsto \: \frac{5}{4} x = 160 \\ \\ \sf \longmapsto \: x = 160 \times \frac{4}{5} \\ \\ \sf \longmapsto \: x = 32 \times 4 \\ \\ \sf \longmapsto \: x = 128$