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3 years ago

Are the ratio 7/15 equal to 21/45 goe

Mathematics

1 answer:

Anna71 [15]3 years ago

7 0

Yes they are equal. 45 is a multiple of 15. 45/15=3, 7*3=21. so 21/45 is equal to 7/15.

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Each space in the following grid can be filled in with integers. The product of each row and column is displayed in blue. Solve

fiasKO [112]

Answer:

5 1 3

2 16 0

2 1 9

8 0

3 years ago

Suppose you are taking a multiple choice exam with 61 questions, each with 4 possible answers. If you were to guess at random fo

Brut [27]

Answer:

15.25

Step-by-step explanation:

The probability of getting a question right is 1/4 because there are 4 possible answers, and you're just guessing randomly.

You can expect to get 1/4 of the questions right.

$\frac{1}{4}\times 61 =15.25$

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3 years ago

(PLEASE ANSWER QUICK) Which prisms do Sophia use exactly 18 unit cubes to build? Choose all the correct answers. The options are

creativ13 [48]

Last ones in each row

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count which figure has 18 cubes

First has 12

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2 years ago

a university is comparing the grade point averages of biology majors with grade point averages of engineering majors. the univer

Ronch [10]

Answer:

H0 : μEng = μBio

H1: μEng ≠ μBio

Step-by-step explanation:

μEng = Engineering average gpa

μBio = Biology average gpa

To test for difference between two sample means , in this case grade point average of biology majors and Engineering major.

Null hypothesis is the initial truth, which is that ; there is no difference in the mean grade point average of both biology and engineering majors

H0 : μEng = μBio

The Alternative hypothesis is the opposite of the null, which is stated has ; there is difference between the average GPA of both Engineering and Biology majors

H1: μEng ≠ μBio

7 0

3 years ago

Solve the triangle. Round your answers to the nearest tenth.

wel

Answer:

m∠A ≈ 43°

m∠B ≈ 55°

mBC ≈ 20

Step-by-step explanation:

Law of Sines: $\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

Step 1: Find m∠B

$\frac{29}{sin82} =\frac{24}{sinB}$

Step 2: Solve for ∠B

29sinB = 24sin82°

sinB = 24sin82°/29

B = sin⁻¹(24sin82°/29)

B = 55.038°

Step 3: Find m∠A

180 - (55.038 + 82)

180 - 137.038

m∠A = 42.962°

Step 4: Find BC

$\frac{29}{sin82} =\frac{BC}{sin42.962}$

Step 5: Solve for BC

29sin42.962° = BCsin82°

BC = 29sin42.962°/sin82°

BC = 19.9581

4 0

2 years ago