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Anastasy [175]
3 years ago
10

Identify the numerical coefficient of the term -13x^2y

Mathematics
1 answer:
nalin [4]3 years ago
5 0

Answer:

2y

Step-by-step explanation:

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Claire can run 400 meters in 45 seconds. What is her rate in meters per<br> second?
horsena [70]

Answer:

8.9 meters per second I think.

Step-by-step explanation:

400 divided by 45

4 0
3 years ago
Read 2 more answers
ASAP Quadrilateral ABCD is similiar to quadrilateral EFGH. The lengths of the three longest sides in quadrilateral ABCD are 24 f
Nitella [24]

Answer:

D. 6 feet.

Step-by-step explanation:

The third longest side of ABCD is 12 feet long and the third longest side of EFGH is 18 feet long.

As they are similar the corresponding sides are in the same ratio so

12/18 =  x/9 where x is the 4th side of ABCD.

2/3 = x/9

3x = 18

x = 6 feet.

3 0
3 years ago
True or False: A race car driver tested his car for time from 0 to 60 mph, and in 20 tests obtained an average of 4.85 seconds w
vredina [299]

Answer:

False

Step-by-step explanation:

given that a race car driver tested his car for time from 0 to 60 mph, and in 20 tests obtained an average of 4.85 seconds with a standard deviation of 1.47 seconds.

Sample size n = 20

since population standard deviation is not known, we can use t critical value for finding out the confidence interval

df=19

t critical = 2.045

Margin of error = 2.045*\frac{s}{\sqrt{n} } \\=2.045*\frac{1.47}{\sqrt{20} } \\=0.6722

conidence interval = Mean±Margin of error

= (4.85-0.6722, 4.85+0.6722)\\= (4.1778, 5.5222)

The given confidence interval is (4.52, 5.18)

Hence the statement is false.

5 0
3 years ago
Each grandchild has 8 children how many great gran children do mr. And mrs.Fisk have
krok68 [10]

How many grandchildren do they have?

6 0
3 years ago
Solve the equation: c + 4c = -90
Liono4ka [1.6K]

Answer:

c= -18

Step-by-step explanation:

c+4c= -90

combine like terms

5c= -90

Divide by 5 on both sides

c= -18

6 0
2 years ago
Read 2 more answers
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