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Ilya [14]
3 years ago
11

Simplify. √-64 A) -8 B) 8i C) -8i D) 32i

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0

Answer:

C

Step-by-step explanation:

8i

√-64 = i√64 = 8i

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I need help with this one too I’m marking brilliant
alukav5142 [94]

Answer:

B

Step-by-step explanation:

For this problem, I basically solved each equation until it agreed with the sequence.

It's not A or C because when you plug in 1, the number doesn't equal 3.

a = 2(-3)¹⁻¹ = 2(-3)⁰ = 2(1) = 0

a = 3(-2)¹ = -6

It's not D because when you plug in 2, the number doesn't equal -6.

a = 3(2)²⁻¹ = 3(2)¹ = 6

6 0
4 years ago
10. To which subsets of the real numbers does the number √7 belong?
Lunna [17]

10. √7=irrational numbers

11.

15x - 20

------------   =   15x-4

5

5 0
3 years ago
After dividing a piece of wood into four equal sections,each section is 4 in.long.How long was the piece of wood I started with
Cerrena [4.2K]

I'm going to out on a limb and say 16 in.

4 pieces * 4 in. = 16

5 0
4 years ago
Find the equation of the linear function represented by the table below in slope-intercept form.
Vitek1552 [10]

Answer:

y = 10x - 8

Step-by-step explanation:

The slope is "m", or how much the y-value changes on a line when the x-value changes by one.

The y-intercept is the y value of the line when it is intersecting the y-axis, or when the x-value is 0.

To find the slope, take 2 points from the graph and plug into the slope formula:

\frac{y_2-y_1}{x_2-x\\_1}

I'll use (0, -8) and (1,2).

Plug into the formula.

\frac{2--8}{1-0}

\frac{10}{1}

10

Slope = 10

To find the y-intercept, look at the table. What is the y-value when the x-value is equal to 0?

-8

y-intercept: -8

Slope-Intercept form:

y = mx + b

m: slope

b: y-intercept

y, x: leave as variables

y = 10x - 8

4 0
1 year ago
The equation x + 9/7 = 15 can be solved by performing two operations on both sides
tekilochka [14]

Answer:

Step-by-step explanation:

Multiply both sides by 7

7x + 9 = 105

7x = 96

x = 96/7= 13 5/7

6 0
3 years ago
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