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2 years ago

Determine if the following system of equations has no solutions ......................

Mathematics

1 answer:

topjm [15]2 years ago

8 0

Answer:

No solutions

Step-by-step explanation:

3x+4y=-4

15x+20y=-22

——————————

-5(3x+4y)=-5(-4) multiply 1st equation by -5 so you can eliminate the variables

-15x-20y=20. Modified 1st equation

15x+20y=-22. 2nd equation

0+0=-2. Added two equations together

since 0 does not equal -2, there is no solution.

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2 years ago

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2 years ago

if a car averages 22 miles per gallon how many gallons of gas are needed to drive the car for 6 hours at the rate of 55 miles pe

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3 years ago

Ivan wants to fill with foam the empty space left in a cube-shaped box after he places a basketball in the box. How many cubic i

Ann [662]

Answer:

280 cubic inches

Step-by-step explanation:

Cubic inches of foam required = volume of the box - volume of the basketball

The box has a shape of a cube, so that;

volume of the box = $l^{3}$

where l is the length of the sides of the box.

volume of the box = $9^{3}$

= 729 cubic inches

volume of the box = 729 cubic inches

The basketball has the shape of a sphere, so that;

volume of the basketball = $\frac{4}{3}$ $\pi$ $r^{3}$

= $\frac{4}{3}$ x 3.14 x $(4.75)^{3}$

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2 years ago

What is the absolute value of -3+4i

Pavlova-9 [17]

$|-3+4i|=\sqrt{(-3)^2+4^2}=\sqrt{25}=5$

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3 years ago

Read 2 more answers