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3 years ago

If a = and b = -1 what is the value of ab -b^2

Mathematics

1 answer:

svet-max [94.6K]3 years ago

8 0

Answer:

-2

Step-by-step explanation:

To solve you need to replace the variables with their numbers.

3(-1) - (-1^2)

-1 x -1 = -1

3 x (-1) = -3

-3 - (-1) =

-2

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Enter the amplitude of the function f(x) . f(x)=3/4cos(3x)+4

Alisiya [41]

Answer:

The amplitude is $\frac{3}{4}$

Step-by-step explanation:

Let f(x) be a sinusoid function that has the following format:

$f(x) = bsin(wx + s) + h$

Then b is the amplitude of the function

h is the vertical displacement of the wave

s is the phase angle

$\frac{2\pi}{w}$ is the period.

In this problem $f (x) = \frac{3}{4}cos(3x) +4$

Then $\frac{3}{4} = b$

Therefore the amplitude of the function is $\frac{3}{4}$

The amplitude is a measure of the vertical size of the sinx wave

4 0

3 years ago

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CORRECT ONE GETS BRAINLIEST!!!!!!

Elza [17]

Answer:

CD = 11 units

Step-by-step explanation:

<em>See the drawing attached</em>

<h3>Given</h3>

C is midpoint of AB
B is between A and D
AD = 15
BD = 7
Find CD

<h3>Solution</h3>

CD = CB + BD =
1/2AB + BD =
1/2(AD - BD) + BD =
1/2(15 - 7) + 7 =
1/2(8) + 7 =
4 + 7 =
11

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3 years ago

Find the surface area of the composite solid. round the answer to the nearest hundredth.

lubasha [3.4K]

The picture in the attached figure

[surface area of the composite solid]=1*(4*6)+2*(4*4)+2*(4*6)+2*(4*√13/2)+2*(6*2√2/2)
[surface area of the composite solid]=24+32+48+4√13+12√2
[<span>surface area of the composite solid]=135.39 yd</span>²

the answer is
135.39 yd²

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4 years ago

Ryan wants to use the Fermi process to estimate the number of basketballs that would fill a gymnasium. As part of the process, h

Westkost [7]

A basketball is the shape of a sphere.

The volume of a sphere is given by

$V= \frac{4}{3} \pi r^3$

Given that the diameter of the basketball is 10 in., thus the radius is 10 / 2 = 5 in.

Thus, the volume of the basketball is given by

$V= \frac{4}{3} \pi(5)^3 \\ \\ = \frac{4\times125}{3} \pi=523.6\ in^3$

Therefore, The best approximate of the volume of the basketball is $5\times10^2\ in^3$

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3 years ago

2m+5=5(m-7)-3m equals??

Svetradugi [14.3K]

2m+5=5(m-7)-3m
first, use distributive property...
2m+5=5m-35-3m
next, combine like terms on the right side...
2m+5=2m-35
next, subtract 2m from both sides.
2m+5=2m-35
-2m -2m
you will get....
5=-35 in which is not true. This means the equation has no solution.

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3 years ago

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