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2 years ago

Why the product (−5)(−4) must be equal to 20.

Mathematics

1 answer:

KengaRu [80]2 years ago

7 0

Answer:

Multiplying to negative numbers equals a positive answer.

Step-by-step explanation:

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alexandr1967 [171]

2 1/2 .need 20 characters to post

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3 years ago

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it takes him 6 hours through 480 pages today he's going to read for 5 hours how many pages will be read fill out the table below

ad-work [718]

Its 400 pages becasue he reads 80 pages per hour

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3 years ago

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Solve each equation for θ, where 0° < θ < 90°. Answer correct to the nearest minute.

Assoli18 [71]

Answer:

Below in bold.

Step-by-step explanation:

sin θ = 4 cos θ

Note that tan θ = sin θ / cos θ so we

Divide both sides by cosθ:

tan θ = 4

θ = 75.96

= 75 degrees 58 minutes.

5 0

3 years ago

Applicants who wish to be admitted to a certain professional school in a large university are required to take a screening test

Elden [556K]

Answer:

Probability of eligible applicants who pass the exam is 0.665

probability of applicants who are ineligible but pass the exam 0.063

Step-by-step explanation:

Total percentage eligible applicants who pass the exam

$\textrm {89\% of 70\%}= \dfrac{89\times70}{100}=62.3\%$

Total ineligible applicants who pass the exam

$\textrm {14\% of 30\%}= \dfrac{14\times30}{100}=4.2\%$

All applicants who pass this exam 62.3% + 4.2% = 66.5%

Probability of applicants who pass the exam

$\textrm{probability }= \dfrac{66.5}{100}=0.665$

Out of 66.5% applicants who pass the exam , 4.2% applicants are ineligible

$\textrm{so the probability is}\dfrac{4.2}{66.5}=0.063$

Probability of applicants who pass the exam is 0.665

probability of applicants who are ineligible but pass the exam 0.063

6 0

3 years ago

4. Does the scatterplot have positive correlation, negative correlation, or no correlation?

bija089 [108]

Answer:

Negative Correlation

Step-by-step explanation:

Since the points are approximately lined up in a linear line pointing toward the bottom right, the slope of the best fit line would be a negative value. So the scatter plot shows a negative correlation.

5 0

2 years ago