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3 years ago

What is the shaded area?

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

5 0

Answer:

Step-by-step explanation:

a . possible

b. ehhh

c. possible

d. possible

choose one

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Pleas help i will give a lot of points IF you answer this ?

avanturin [10]

Answer:

Inverse Operations

Inverse operations

Division

Step-by-step explanation:

+4 on both sides

-17 both sides

Divide by 20 both sides.

6 0

2 years ago

The perimeter of a rectangle is 16 feet. if the length is 5 feet, find the width

Thepotemich [5.8K]

Length times width equals so your answer is 80

7 0

2 years ago

Read 2 more answers

The probability that a lab specimen contains high levels of contamination is 0.15. A group of 4 independent samples are checked.

Lady bird [3.3K]

Answer:

0.5220

Step-by-step explanation:

Since the probability of contamination is 0.15, the probability of no contamination is 1 - 0.15 = 0.85

The probability that they are all contaminated will be 0.85 * 0.85 0.85 * 0.85 = 0.52200625

This is 0.5220 to four decimal

5 0

2 years ago

If 2(4x + 3)/(x - 3)(x + 7) = a/x - 3 + b/x + 7, find the values of a and b.

zmey [24]

Answer:

$a=3$ and $b=5$ .

Step-by-step explanation:

So I believe the problem is this:

$\frac{2(4x+3)}{x-3}(x+7)}=\frac{a}{x-3}+\frac{b}{x+7}$

where we are asked to find values for $a$ and $b$ such that the equation holds for any $x$ in the equation's domain.

So I'm actually going to get rid of any domain restrictions by multiplying both sides by (x-3)(x+7).

In other words this will clear the fractions.

$\frac{2(4x+3)}{x-3}(x+7)}\cdot(x-3)(x+7)=\frac{a}{x-3}\cdot(x-3)(x+7)+\frac{b}{x+7}(x-3)(x+7)$

$2(4x+3)=a(x+7)+b(x-3)$

As you can see there was some cancellation.

I'm going to plug in -7 for x because x+7 becomes 0 then.

$2(4\cdot -7+3)=a(-7+7)+b(-7-3)$

$2(-28+3)=a(0)+b(-10)$

$2(-25)=0-10b$

$-50=-10b$

Divide both sides by -10:

$\frac{-50}{-10}=b$

$5=b$

Now we have:

$2(4x+3)=a(x+7)+b(x-3)$ with $b=5$

I notice that x-3 is 0 when x=3. So I'm going to replace x with 3.

$2(4\cdot 3+3)=a(3+7)+b(3-3)$

$2(12+3)=a(10)+b(0)$

$2(15)=10a+0$

$30=10a$

Divide both sides by 10:

$\frac{30}{10}=a$

$3=a$

So $a=3$ and $b=5$ .

4 0

2 years ago

Read 2 more answers

What is the slope of the line between (3, −4) and (−2, 1)? (1 point)

stealth61 [152]

-1 will be your answer

rise over run
3-1 = 2
-4 + 1 = -3
2-1 = 1
-3 + 1 = -2

hope this helps

8 0

3 years ago