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4 years ago

Josh will take 10 tests in 5 weeks at school. How many tests will he have taken after 7 weeks?

2 answers:

5 0

Let x be the number of tests taken after 7 weeks. After 5 weeks he'll take = 10 tests. Therefore after 7 weeks he'll take= x tests. Using proportion you'll get, x = 10x7/5 = 14

kenny6666 [7]4 years ago

3 0

Set up a proportion.
10/5=x/7
5x = 70
x = 14

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Use a table to find two consecutive integers between which the solution lies.

IRINA_888 [86]

4k = 25 => k = 25/4 => 6< k < 7
15q = 160 + 24 => 15q = 184 => q = 184/15 => 12< q < 13

7 0

4 years ago

If the sum of two numbers is 67, and there difference is 33. The largest number is what?

Naddik [55]

34 is the answer because 67-33=34

4 0

3 years ago

How I can answer this question, NO LINKS, if you answer correctly I will give u brainliest!

chubhunter [2.5K]

Answer:

It's a direct variation condition,

hence ratio remains constant.

39 - 3

x - 4

x = 4×39/3 = 4×13 = 52 .. (for first blank space)

39 - 3

x - 10

x = 39×10/3 = 13×10 = 130 .. (for second blank space)

6 0

2 years ago

Read 2 more answers

Part A: Find the LCM of 7 and 12. Show your work. (3 points)

inna [77]

Answer:

A. 84; B. 8; C. 8 × 19

Step-by-step explanation:

Part A. Least common multiple

Step 1. List the prime factors of each.

7 = 7

12 = 2 × 2 × 3

Step 2: Multiply each factor the greatest number of times it occurs in either number.

7 has one 7; 12 has two 2s and one 3.

LCM = 7 × 2 × 2 × 3

LCM = 7 × 12

LCM = 84

Part B. Highest common factor

Find all the factors of 56 and 96.

Factors of 56: 1, 2, 4, 7, 8, 14, 28

Factors of 96: 1, 2, 4, 6, 8, 12, 16, 24, 32, 48

The highest factor that in both 56 and 96 is 8.

Part C. Factoring

56 + 96 = 8(7 + 12) = 8 × 19

The GCF is 8.

19 = 7 + 12 is the sum of two numbers that do not have a common factor.

4 0

4 years ago

Describe the change int he radius of a circle when the area is multiplied by 1/4.

Marianna [84]

I think the correct answer is C. Since a=πr², in order to get the area to become 1/4 of what it was previously, the radius needs to be cut in half to make the divide that side by 4. a=π(r/2)²=πr²/4 and will therefore multiply the area by 1/4.

4 0

3 years ago