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Serggg [28]
3 years ago
10

Which two expressions are equivalent? *

Mathematics
2 answers:
pav-90 [236]3 years ago
8 0
Answer:
21x + 14 and 7(3x + 2)
9x2 + 9x + 5 and 18x2 + 5
are equivalent
oksano4ka [1.4K]3 years ago
4 0
I really don’t know sorry
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There are a hundred and fifty students in the fifth grade in Washington Elementary School 2/5 of the students like soccer and 3/
ArbitrLikvidat [17]

Answer:I believe 45students like basketball and 60 like soccer

Step-by-step explanation:

2/5=.4

.4*150= 60

3/10=.3

.3*150=45

5 0
3 years ago
Find three consecutive even integers whose sum is 72.
slava [35]

Answer:

Step-by-step explanation: 22,24,26 Are Three Consecutive Intergers

4 0
3 years ago
The U.S. Post Office is interested in estimating the mean weight of packages shipped using the overnight service. They plan to s
pshichka [43]

Answer: A. Approximately 0.017 pounds

Step-by-step explanation:

Formula to find the margin of error :

E=z^*\dfrac{s}{\sqrt{n}} , where z* = critical value for confidence interval , s= standard deviation , n= sample size.

As per given , we have

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Critical value for 95% confidence = 1.96

Then, Margin of error for 9%% confidence interval will be :

E=(1.96)\dfrac{0.15}{\sqrt{300}}\\\\=0.0169740979142\approx0.017

Hence, they can expect a margin error of 0.017 pound (approximately.)

Thus , the correct answer is A. Approximately 0.017 pounds

5 0
3 years ago
What does the equation x2 + y2 = 16 represent as a region in 3?
Sonja [21]
This equation represent a circle its center is the origin point and its radius equals 4 length units
6 0
3 years ago
Can someone please explain?!
Hoochie [10]
Infinite! You can, for example, add -1 and 1 to the equation and make it equal. In x=5, you can have x=5+1-1. and it'd still be the same. To add on to it, you could do x+1-1=5+1-1, etc..
5 0
4 years ago
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