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tekilochka [14]
3 years ago
7

Gabby, Mary, and Chrisrt were rasing money for their school. Mary got 4 times as much money as Christy. Christy got 2 times as m

uch money as Gabby. Gabby Collected $57 for the fundraiser. How much money did Mary get? How much money did all three girls get in total? Show your work.
Mathematics
2 answers:
Fiesta28 [93]3 years ago
5 0
57 + 57 = C
C = 114

114 + 114 + 114 + 114 = M
M = 456

In all, 627.
Bingel [31]3 years ago
3 0
Enough for the principle to buy a new couch for her office
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K.Brew sells a wide variety of outdoor equipment and clothing. The company sells both through mail order and via the internet. R
Elan Coil [88]

Answer:

Step-by-step explanation:

The formula for determining the confidence interval for the difference of two population means is expressed as

Confidence interval = (x1 - x2) ± z√(s²/n1 + s2²/n2)

Where

x1 = mean sale amount for mail order sales = 82.70

x2 = mean sale amount for internet sales = 66.9

s1 = sample standard deviation for mail order sales = 16.25

s2 = sample standard deviation for internet sales = 20.25

n1 = number of mail order sales = 17

n2 = number of internet sales = 10

For a 99% confidence interval, we would determine the z score from the t distribution table because the number of samples are small

Degree of freedom =

(n1 - 1) + (n2 - 1) = (17 - 1) + (10 - 1) = 25

z = 2.787

Margin of error =

z√(s²/n1 + s2²/n2) = 2.787√(16.25²/17 + 20.25²/10) = 20.956190

4 0
3 years ago
What is 482 students to 20 teachers?
fredd [130]
I really don’t know
8 0
3 years ago
Read 2 more answers
Solve each equation. #8. 8z = 112
Lynna [10]
#8 Z=14
#9 D=98
#10 F=622
# 11 A=27
I hope this helps!!
6 0
3 years ago
I will give BRAINIEST
Lilit [14]
I believe it’s c/100.
2=20
10 divided by 2 = 5.
Multiply 5 by 20. That equals 100.
4 0
2 years ago
Factoring without Combining Like Terms
Alex_Xolod [135]

Answer:

(x + 3)(2x + 5)

Step-by-step explanation:

Given

2x² + 6x + 5x + 15 ← grouping the terms

= (2x² + 6x) + (5x + 15) ← factor each group

= 2x(x + 3) + 5(x + 3) ← factor out (x + 3) from each term

= (x + 3)(2x + 5) ← in factored form

8 0
3 years ago
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