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salantis [7]
3 years ago
12

Can you please help me ??

Mathematics
2 answers:
solong [7]3 years ago
6 0
43/100 or .43. There are 43 out of 100 boxes shaded
Artist 52 [7]3 years ago
4 0

Answer:

43/100; 0.43

Step-by-step explanation:

Total amount of boxes = 100 boxes

Amount shaded = 43 boxes

43 over 100 as a fraction is 43/100

43 over 100 as a decimal is 0.43

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Suppose the class sizes in high schools in a major public school district are normally distributed with an unknown population me
Blizzard [7]

Answer:

1.703

Step-by-step explanation:

The reason we try to find t score is because the sample size is below 30, meaning the sample size is small

Hence:

Step 1

We find the degree of freedom

The Degrees of freedom = Number of samples - 1

The random number of samples = 28

= 28 - 1

= 27

Step 2

Using a t score table or t score calculator, we can obtain the t score value for a 90% confidence interval and degree of freedom of 27

90% confidence interval =

10% significance level = 0.10 for two tails or 0.1/2 = 0.05 for one tail

Hence: t90 = 1.703

4 0
2 years ago
PLZ HELP AND SHOW YOUR WORK &lt;3333<br><br><br> Substitution.<br><br> 3x+2y=11<br><br> y=5x-1
liraira [26]
Hey there! :D

Substitute y for 5x-1. 

3x+2y=11

y=5x-1

3x+2(5x-1)=11

3x+10x-2=11

13x-2=11

13x=13

x=1

Now, plug that in to find y.

y=5x-1

y=5(1)-1

y=5-1

y=4

(1,4) <== the solution

I hope this helps!
~kaikers
8 0
3 years ago
A camera has a listed price of $800.95 before tax. If the sales tax rate is 8.25%, find the total cost of the camera with sales
maria [59]

Answer:

$867.03

Step-by-step explanation:

6 0
2 years ago
Abigail needs at least $199 to purchase the new phone that she wants. Last week she babysat and earned $45. Write and solve an i
N76 [4]
5 or 4 weeks because 199 divided by 45 equals 4.4222222222
7 0
3 years ago
The revenue, in dollars, of a company that produces video game systems can be modeled by the expression 5x2 + 2x – 80. The cost,
docker41 [41]
The expression that represents the profit is: ( 5x2 + 2x – 80)-(<span>5x2 – x + 100)

Profit can be modeled by polynomial expression: 3x-180

If 1,000 video game systems are sold, the company's profit is: $2,820</span>
6 0
3 years ago
Read 2 more answers
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