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IgorC [24]
3 years ago
7

How do you solve how to make a ten to solve 13-7?

Mathematics
1 answer:
Valentin [98]3 years ago
5 0
13 - 7 = (10 + 3) - 7 = (10 - 7) + 3 = 3 + 3 = 6
You might be interested in
Brainliest to right answer also based on answer 1 are the equations equivalent?
zvonat [6]

Answer:

Yes, they are equivalent, and the second question is B

Step-by-step explanation:

If you add x on both sides of equation A, then it comes up to 5x+2=6, which is equivalent to equation B. For the second question, you are just basically adding a variable to each side, so it is B.

6 0
2 years ago
Solve for x.<br> \12x + 3<br> 13x + 2<br> x = [?]
Vsevolod [243]

Answer:

x=7

Step-by-step explanation:

25x+5=180

      -5    -5

25x=175

/25    /25

3 0
3 years ago
Read 2 more answers
Kavon grew 8 plants with 2 seed packets. How many seed packets does Kavon need to have a total of 12 in his backyard?
Dennis_Churaev [7]
He would need 3 seed packets.
3 0
3 years ago
Read 2 more answers
2. What is the quotient of 1.02 X 103 and<br> 2 x 10-4?
ICE Princess25 [194]

Answer:

1.02*103= 13.06 and 2x10-4=16

Step-by-step explanation:

times the normal like a normal three digit by three digit but move the decimal to digits to the left due to the hundredths place and the second one is like pemdas

5 0
2 years ago
Construct a 95% confidence interval for the population mean, µ. Assume the population has a normal distribution. A sample of 25
bixtya [17]

Answer:C. (77.29, 85.71)

Step-by-step explanation:

We want to determine a 95% confidence interval for the mean test score of randomly selected students.

Number of sample, n = 25

Mean, u = 81.5

Standard deviation, s = 10.2

For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean +/- z ×standard deviation/√n

It becomes

81.5 +/- 1.96 × 10.2/√25

= 81.5 +/- 1.96 × 2.04

= 81.5 +/- 3.9984

The lower end of the confidence interval is 81.5 - 3.9984 =77.5016

The upper end of the confidence interval is 81.5 + 3.9984 =85.4984

Therefore, the correct option is

C. (77.29, 85.71)

6 0
3 years ago
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