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2 years ago

Someone help please, this is due in 10 minutes and I dont know the answer.

Mathematics

1 answer:

Greeley [361]2 years ago

8 0

Answer:

Step-by-step explanation:

Rate of change = the difference in y/the difference in x.

20 - 6.50/4 - 1 = 13.5/3 = 4.5/1

24.5 - 20/5 - 4 = 4.5/1

33.5 - 24.5/7 - 5 = 9/2 = 4.5/1

The rate of change is 4.5.

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Help me plz i don't even know if the first one is correct

dimulka [17.4K]

Here's what i got:

Answer:

2.2 * 10^7

0.072 = 7% are female

0.10455 * 22,000,000 = C

0.10455 * 22,000,000 = 2,300,100

0.0195 = 2% of the living veterans served in both.

4 0

2 years ago

X^2 + 11x + 28 = 0 please help gotta make this longer

RideAnS [48]

Answer:

x= -7 x = -4

Step-by-step explanation:

x^2 + 11x + 28 = 0

What two numbers multiply to 28 and add to 11

7*4 = 28

7+4 =11

(x+7) (x+4) =0

Using the zero product property

x+7 =0 x+4 =0

x= -7 x = -4

5 0

3 years ago

What is the value of c in the interval (5,8) guaranteed by Rolle's Theorem for the function g(x)=−7x3+91x2−280x−9? Note that g(5

jeyben [28]

Answer:

$\displaystyle c = \frac{20}{3}$

Step-by-step explanation:

According to Rolle's Theorem, if f(a) = f(b) in an interval [a, b], then there must exist at least one c within (a, b) such that f'(c) = 0.

We are given that g(5) = g(8) = -9. Then according to Rolle's Theorem, there must be a c in (5, 8) such that g'(c) = 0.

So, differentiate the function. We can take the derivative of both sides with respect to x:

$\displaystyle g'(x) = \frac{d}{dx}\left[ -7x^3 +91x^2 -280x - 9\right]$

Differentiate:

$g'(x) = -21x^2+182x-280$

Let g'(x) = 0:

$0 = -21x^2+182x-280$

Solve for x. First, divide everything by negative seven:

$0=3x^2-26x+40$

Factor:

Zero Product Property:

$x-2=0 \text{ or } 3x-20=0$

Solve for each case. Hence:

$\displaystyle x=2 \text{ or } x = \frac{20}{3}$

Since the first solution is not within our interval, we can ignore it.

Therefore:

$\displaystyle c = \frac{20}{3}$

3 0

2 years ago

Find the domain and range of the relation: {(–20, 11), (6, –8), (1, –20), (–13, 13)}

user100 [1]

Answer:

D: {-20, -13, 1, 6}

R: {-20, -8, 11, 13}

Step-by-step explanation:

Given the relation, {(–20, 11), (6, –8), (1, –20), (–13, 13)}, all x-values (inputs) make up the domain of the relation while all y-values make up the range of the relation.

Therefore:

Domain: {-20, -13, 1, 6}

Range: {-20, -8, 11, 13}

4 0

3 years ago

What is 30% of 20????

Bezzdna [24]

Answer:

Step-by-step explanation:

30% of 20 = 30% * 20

= $\frac{30}{100}$ * 20

= 6

3 0

3 years ago