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3 years ago

Square Roots Math - 8th Please Help :-D

Mathematics

2 answers:

igomit [66]3 years ago

7 0

Answer: -6/10 and 6/10

Step-by-step explanation:

That's the answer because square roots can be positive or negative. As long both numbers are positive or negative, the answer will be positive!

Fiesta28 [93]3 years ago

4 0

Your answer is going to be B

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ANSWER THIS TO BE MARKED BRAINLIEST\

krek1111 [17]

The correct answer would be A

6 0

2 years ago

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X-5y-z=-20 -2x-y-6z=25 -x-4y-z=-15 Solve by elimination

Tju [1.3M]

Answer:

x = 0

y = 5

z = -5.

Step-by-step explanation:

X-5y-z=-20

-2x-y-6z=25

-x-4y-z=-15

Add equation 1 and 3:

-9y - 2z = -35 .......... A

Multiply the first equation by 2:

2x - 10y - 2z = -40

Now add this to equation 2:

-11y -8z = -15.............B

Now multiply equation A by -4:

36y + 8x = 140.........C

Add equations B and C:

25y = 125

y = 5.

Substitute for y in equation A:

-9*5 - 2z = -35

2z = -45 + 35 = - 10

z = -5.

Now find x by substituting for y and z in the first equation:

x - 5(5) - (-5) = -20

x - 20 = -20

x = 0.

6 0

2 years ago

In a science experiment,the temperature decreased by 0.1 degree Celsius every 15 minutes. Find the unit rate

maksim [4K]

0.1 decrease in 15 minutes
unit rate is 0.1 / 15 = 0.00667
Temperature is decreasing by 0.00667 degrees Celsius per minute

8 0

2 years ago

4. Sasha sells t-shirts. Each day she earns a set amount, plus a

zhannawk [14.2K]

Answer:

The linear function is: p(x) = 3x+65The linear function is: p(x) = 3x+65

Step-by-step explanation:

Let x be the number of t-shirts and y be the total pay

As we can clearly see in the table that there is a linear relationship between x and y

A linear function is given as:

$y = mx+b$

Here m is the gradient of the function then

$m = \frac{y_2-y_1}{x_2-x_1}$

Taking any two pairs of x and y

(1,68) and (2,71)

$m = \frac{71-68}{2-1}\\m = 3$

Putting in equation

$y = 3x+b$

Putting a pair (1,68) in the equation to find the value of b

$68 = 3(1) + b\\68 = 3+b\\b = 68-3\\b = 65$

Putting the value of b

$y = 3x+65$

Let p(x) be the linear function

Hence,

The linear function is: p(x) = 3x+65

8 0

2 years ago

Rob has 5 blue sweaters. Write a fraction that represents the number of blue sweaters that rob has?

lidiya [134]

I think the answer is 1/5

4 0

3 years ago

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