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3 years ago

when adding two rational numbers tell what the sign of the sum will be if both rational numbers are positive

Mathematics

1 answer:

erastova [34]3 years ago

3 0

Answer:

When adding two negative integers you'll get a sum that's negative. -When adding one integer that's negative and one that's positive the sum will depends on how large the absolute value is for the two integers to tell if the answer will be positive or negative.

Step-by-step explanation:

Brainliest plss qwq

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What is the simple form of the radical equation sqrt of 27x^4/75y^2

omeli [17]

We are given with the radical expression
√(27 x⁴ / 75 y²)
we can simplify this by dealing with the fraction first
√(27 x⁴ / 75 y²) = √( 9 x⁴ / 25 y²)
Then, take the square root of the coefficients and the variables
= 3x² / 5y

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3 years ago

Determine the surface area of each figure based on the measurements of its nets.

Maurinko [17]

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3 years ago

1) Ellen Murphy manages an Auto Film outlet that

Mrrafil [7]

Answer:

Four-door sedan = 22

Two-door coupes = 6

Step-by-step explanation:

This is an algebra problem.

Let "x" represent number of four-door sedan,

"y" represent two-door coupe.

Since there are total of 28 autos on which film is applied, we have:

x + y = 28 Equation 1

y = 28 - x Equation 2

Also provided,

Total revenue = $3,459.72

That means,

129.99x + 99.99y = 3,459.72 Equation 3

Putting value of "y" from Equation 2 in Equation 3 we have:

129.99x + 99.99(28 - x) = 3,459.72

129.99x + 2,799.72 - 99.99x = 3,459.72

30x = 660

x = $\frac{660}{30} = 22$

Therefore, number of four door sedans = 22

Further y that is two door sedan = 28 - x = 28 - 22 = 6

4 0

4 years ago

Write 4x-7y+8=0 in slope-intercept form

Inessa [10]

Well, I would say that the answer would be 7y=4x+8.... I got this by solving for the y-intercept. then found the slope. And just for the fun of it. i solved the equation to find/ get the answer. :) I hoped that this helped. :)

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3 years ago

Please help! This is 6th grade math on surface area.

KatRina [158]

Answer:

144

Step-by-step explanation:

Ok. I love problems like this.

You just have to find the surface are of each part and add it up!

To find the surface area of a rectangle, you multiple the base and the height. To find the surface area of a triangle, you multiple the base and height, and divide by 2 (because its half of a rectangle).

Left rectangle: 3*ll=33

Middle rectangle: 4*ll=44

Right rectangle: 5*ll=55

Top triangle: 3*4=12

12/2=6

Bottom triangle: 3*4=12

12/2=6

ADD THEM ALL!!! 33+44+55+6+6=144

(Also can I please please please have brainliest? I need it to level up!)

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3 years ago