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hoa [83]
4 years ago
9

Which of the following is equivalent to a real number?

Mathematics
1 answer:
Aleksandr-060686 [28]4 years ago
4 0

Answer:

C) -144^¹/₃

Step-by-step explanation:

Having a number to the power of a fraction is the equivalent of rooting by its reciprocal. So, the sixth root, fourth root, cube root, and square root. Only odd roots can have negative answers (∛x, x can be negative; √y, y can not be negative unless we talk about imaginary numbers).

Since we are looking for a real number, C, showing a cube root of a negative number, must be the answer.

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3x + 5y = 7<br> How to solve it
Lubov Fominskaja [6]

Answer:

x=1 and y=4/5

Step-by-step explanation:

<u>Given system of equations</u>

3x+5y=7

5x+10y=13

<u />

<u>Multiply first equation by 2</u>

2(3x+5y)=2(7)

6x+10y=14

<u>Eliminate y-variable to get "x"</u>

 6x+10y=14

<u>- 5x+10y=13</u>

         x = 1

<u>Substitute x=1 into either equation and find "y"</u>

3x+5y=7

3(1)+5y=7

3+5y=7

5y=4

y=4/5

Therefore, x=1 and y=4/5

6 0
2 years ago
How would you scale down by a factor of 1/10?
slavikrds [6]

Answer:

See example below.

Step-by-step explanation:

To scale down by a factor of 1/10, multiply the side length or distance by 1/10.

Example:

If the distance was 5 then 5*1/10 = 5/10 = 1/2 is the scaled down version.

6 0
3 years ago
ABC is a right-angled triangle.
Amiraneli [1.4K]

Answer:

14.5

Step-by-step explanation:

The pythagoreom theorum shows a^2 + b^2 = c^2. Therefore, c^2 - a^2 = b^2

256 - 44.89 = 211.11

The square root of 211.11 rounded to the first decimal place is 14.5

8 0
3 years ago
Use the x-intercept method to solve the equation y=x^3-6x^2+11x-6
maxonik [38]

Answer:

A. 1,2,3

Step-by-step explanation:

If you graph it you can see the intercepts

desmos has a great free graphing calculator

3 0
3 years ago
Can somebody help me on question 8?
vesna_86 [32]
4x2 is 8
8x24 is 192
Answer is 192
3 0
3 years ago
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