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elena55 [62]
2 years ago
9

Find the perimeter. Simplify your answer

Mathematics
1 answer:
meriva2 years ago
4 0

Answer:

23y-8

Step-by-step explanation:

First add together all of the terms that are next to a variable:

2y+10y+5y+6y=23y

Then add together all of the integers that are alone:

-9+10+(-7)+(-2)= -8

Add the two terms together and you get:

23y-8

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Doug estimates that his soccer team will win 7 games this year. The team actually wins 10 games. What is the percent error of Do
baherus [9]

Answer: 30%

Step-by-step explanation:

Percent error = \dfrac{|\text{Estimated value - Actual value}|}{\text{Actual value}}\times100\%

Estimated number of games win this year = 7

Actual number of games won = 10

Now ,   the percent error of Doug’s estimate = \dfrac{|7-10|}{10}\times100\%= \dfrac{3}{1}\times10\%=30\%

Hence, the percent error of Doug’s estimate = 30%

6 0
3 years ago
Read 2 more answers
A soft drink manufacturer wishes to know how many soft drinks adults drink each week. They want to construct a 85% confidence in
andreev551 [17]

Answer: 547

Step-by-step explanation: The margin of error formulae is given below as

Margin of error = critical value ×(σ/√n)

Where σ = standard deviation and n is the sample size.

From our question, margin of error = 0.08

Variance is 1.691,

hence σ = √variance = √1.691

= 1.3.

We will be using a z test for our critical value this is because a soft drink manufacturer will always produce drinks more than 30 in numbers.

The critical value for a 85% confidence interval is 1.44.

Hence critical value is 1.44.

By substituting the parameters, we have that

0.08 = 1.44 × 1.3/ √n

0.08 = 1.873/ √n

By cross multiplying

0.08 × √n = 1.873

√n = 1.873/ 0.08

√n = 23.41

n = (23.41)²

n = 547.

7 0
3 years ago
A circular disc has a circumference of 14π meters. If we multiply the radius of the circular disc by 12, what will be the circum
ikadub [295]

Answer:

169π

Step-by-step explanation:

3 0
2 years ago
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ALGEBRA On the first Tuesday of every month, Roth's gives seniors a 15%
iVinArrow [24]

Answer:

Let selling price of three-piece suit = x. Applying 7% sales tax, total amount paid = x + xx7 - $152.79. 100 207 100 ०१ This is the $ 152.79 os, x- $142.7943 price after marked down of 40%, let the regular price of three-piece suit be = y. Therefore y [ 3 - 4m] $342.1943 1 - - $237.99 Regular price of 1 piece suit $ 237.99

3 0
2 years ago
Can someone help me on number one and 4? Thanks! :)
BabaBlast [244]

Answer:

Step-by-step explanation:

I’m pretty sure it’s b

3 0
3 years ago
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