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Y_Kistochka [10]
3 years ago
10

Fill in the blank with the correct number.

Mathematics
1 answer:
White raven [17]3 years ago
5 0

Step-by-step explanation:

I think both 3 and 9

D options

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What is the solution to the system of equations below?
Ymorist [56]

Answer:

6×+÷3=2+4×=6

3x 8x+6 =8×+y1×-2

6 0
3 years ago
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A store has a 40% off sale on headphones. With this discount, the price of one pair of headphones is $36.
Aloiza [94]

Answer:

21.6

Step-by-step explanation:

i did the math

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2 years ago
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Researchers are concerned about the impact of students working while they are enrolled in classes, and they’d like to know if st
antoniya [11.8K]

Answer:

The 95% confidence interval based on this sample is =

[6.41, 7.79]

Step-by-step explanation:

The formula for Confidence Interval =

Mean ± z × standard deviation/√n

Sample mean = 7.1 hours

Standard deviation = 5 hours

n = 200 students

z = 95% confidence interval z score

= 1.96

C.I = 7.1 ± 1.96 × 5/√200

C.I = 7.1 ± 0.693

Hence, Confidence Interval

= 7.1 - 0.693

= 6.407

Approximately = 6.41

= 7.1 + 0.693

= 7.793

Approximately = 7.79

Therefore, the 95% confidence interval based on this sample is

[6.41, 7.79]

6 0
2 years ago
Ian is going to water his plants .is it resasoable to say he will fill the watering can with 3liters of water explain
cluponka [151]
No! a liter is as much as a big bottle of soda! he should use 3 milileters. please vote me brainliest if i helped :) ❤️
6 0
3 years ago
Two angles are supplementary. The measure of one angle is 54 more than the measure of the other angle. What is the measure of th
il63 [147K]

Answer:

bigger angle is 117°

Step-by-step explanation:

x+x+54= 180 (when two angles are complementary it means that their sum is 180 degrees)

2x+54=180

2x= 180-54

2x=128

x=126/2

x= 63

x1= smaller angle

x1= 63

x2= bigger angle

x2= 63+54

x2=117

4 0
3 years ago
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