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2 years ago

How do you do to the 2nd power

1 answer:

4 0

Something to the second power is simply that number multiplied by itself once. The third power is something multiplied by itself 2 times, and so on

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Divide: −72 ÷ 9 = A) −8 B) −7 C) −6 D) 7

Lisa [10]

Answer:

-8

Step-by-step explanation:

-72 / 9 = -8

7 0

2 years ago

Read 2 more answers

I need help with number 5

Tju [1.3M]

Answer:

B. BD = 9

Step-by-step explanation:

Simply set the 2 equations equal to each other (both are congruent due to perpendicular bisector):

6x + 3 = 3x = 6

3x + 3 = 6

3x = 3

x = 1

Then substitute 1 for <em>x</em> in BD

6(1) + 3

6 + 3

BD = 9

7 0

3 years ago

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out of some students appeared in an examination 80% passed in mathematics 75% passed in english and 5% failed in both subjects i

Advocard [28]

Answer:

5000 students appeared in the examination.

Step-by-step explanation:

We solve this question using Venn probabilities.

I am going to say that:

Event A: Passed in Mathematics

Event B: Passed in English.

5% failed in both subjects

This means that 100 - 5 = 95% pass in at least one, which means that $P(A \cup B) = 0.95$

80% passed in mathematics 75% passed in english

This means that $P(A) = 0.8, P(B) = 0.75$

Proportion who passed in both:

$P(A \cap B) = P(A) + P(B) - P(A \cup B)$

Considering the values we have for this problem

$P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.8 + 0.75 - 0.95 = 0.6$

3000 of them were passed both subjects how many students appeared in the examination?

3000 is 60% of the total t. So

$0.6t = 3000$

$t = \frac{3000}{0.6}$

$t = 5000$

5000 students appeared in the examination.

4 0

2 years ago

In circle "R" below, determine the length of arc AB if BR = 5 units.

riadik2000 [5.3K]

$l=2 \pi r( \frac{degrees}{360} )$

$l=2 \pi$ × 5 × $\frac{135}{360}$ = 11.78

4 0

3 years ago

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A 32 mb memory stick can hold up to 491 images. How many images can 7 memory sticks hold?

MArishka [77]

7 memory sticks at 32 mb can hold 491 * 7 = 3437 images.

4 0

3 years ago