3 years ago

In a mathematics class, half of the students scored 84 on an achievement test. With the

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

7 0

if there any answer choices?

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Evaluate i^31 please help

Nadya [2.5K]

ANSWER

${i}^{31} = - i$

EXPLANATION

We want to evaluate

${i}^{31}$

Use indices to rewrite the expression as:

$= {i}^{30} \times i$

We know that

${i}^{2} = - 1$

So we rewrite the expression to obtain;

$= ({ {i}^{2}) }^{15} \times i$

This gives us;

$= {( - 1) }^{15} \times i$

This simplifies to

$= - 1 \times i$

$= - i$

4 0

3 years ago

Which of the following is a prime number? 61 39 27 76

Zolol [24]

61 is the prime number.

39 is divisible by 3 and 13.
27 is divisible by 9 and 3.
76 is divisible by several numbers, including 2.

7 0

3 years ago

Read 2 more answers

4(5+ab) where a=-3.5 and b-0.8

lozanna [386]

Answer:

31.2

Step-by-step explanation:

4(5 + (- 3.5 × - 0.8)

4(5 + 2.8)

4(7.8)

31.2

6 0

3 years ago

Write an expression to represent the following:

nevsk [136]

9u+5

9u represents 9 multiplied by a number.

+5 means 5 more than this product.

Hope this helps.

4 0

3 years ago

Dharmesh has a square garden with a perimeter of 132 feet. Is the area of the garden greater than 1,000 square feet?

Delvig [45]

Answer: Yes. The area is 1089 square feet.

Step-by-step explanation:

For a square, all the sides are equal: L = W

Hence, the perimeter of a square = 4 × L

Perimeter = 4L

132 = 4L

132 ÷ 4 = L

33 = L = W

Area of a square with 33 feet sides = L × L = 33 × 33 = 1089

1089 > 1000

3 0

4 years ago