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alexdok [17]
3 years ago
5

The length of a rectangle Is 3 Inches more than its width, and its perimeter is 22 Inches. Find the width of the rectangle.

Mathematics
1 answer:
Vesnalui [34]3 years ago
3 0

Answer:

the width of the rectangle is 7 inches

Step-by-step explanation:

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A limnologist wishes to estimate the mean phosphate content per unit volume of lake water. It is knownfrom studies in previous y
telo118 [61]

Answer: 68

Step-by-step explanation:

As per given , we have

Population standard deviation : \sigma=4

Critical value for  90% confidence interval =z_{\alpha/2}=1.645

Margin of error : E= 0.8 milligrams

The formula to find the sample size is given by :-

n=(\dfrac{z_{\alpha/2}\ \sigma}{E})^2

i.e. n=(\dfrac{(1.645)(4)}{0.8})^2=(8.225)^2

=67.650625\approx68

Hence, the limnologist must analyze 68 samples.

6 0
3 years ago
The ordered pair, (1,5) indicates the unit rate of books to cost on the graph shown. What does the point on the graph represent?
DerKrebs [107]
The point on the graph represents that 2 books cost $10.
3 0
2 years ago
∠ and ∠ are supplementary angles. If ∠ = (2 − 30)° and ∠ = 4, find the measure of the larger angle
Gala2k [10]

Answer:

We get ∠A =40° and ∠B = 140° and ∠B = 140° is measure of larger angle

Step-by-step explanation:

we have  ∠A = (2x − 30)° and ∠B = 4x, and we need to find measure of larger angle. And ∠A and ∠A are supplementary angles.

If the angles are supplementary there sum is equal to 180° i.e ∠A + ∠B = 180°

So,  First we have to find the value of x. and then we can determine larger angle.

We know: ∠A + ∠B = 180

2x-30+4x=180

6x-30=180

6x=180+30

6x=210

x=210/6

x=35

So, value of x is x=35

Now finding ∠A and ∠B

∠A = (2x − 30)°

∠A = (2(35) − 30)°

∠A = (70 − 30)°

∠A =40°

and ∠B = 4x

∠B = 4(35)

∠B = 140°

So, we get ∠A =40° and ∠B = 140° and ∠B = 140° is measure of larger angle

6 0
3 years ago
A shirt is originally priced at $19.99. it was marked down 25%. what is the sale price?
Bond [772]

Answer:

Final price: $14.99

Step-by-step explanation:

Discount= original price x discount % / 100

Discount= 19.99 x 25/ 100

Discount= 499.75/100

You save= $4.9975



Final Price= original price - discount

Final price= 19.99 - 4.9975

Final Price= $14.9925

Final Price= $14.99

8 0
3 years ago
Five -1/2 X equals 5/8 X +2
Ronch [10]

Answer:

x=-20/18

Step-by-step explanation:

-1/2x=(5x+10)/8= -18x=20

therefore x=-20/18 =-1.111111

7 0
3 years ago
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