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Vikentia [17]
3 years ago
7

What is the solution to the system of equations? 7x-2y= -24 5x+5y=15

Mathematics
2 answers:
Artyom0805 [142]3 years ago
7 0
35x -10y=-120
10x +10y= 30

45x=-90
x=-2

5(-2)+5y=15
-10+5y=15

5y=25
y=5

(-2,5): the answer is b
HACTEHA [7]3 years ago
7 0

Answer:

B. (2,-5)

Step-by-step explanation:

I just took the test

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In farming, the relationship between precipitation during the growing season and crop yield is quadratic. The following table sh
Sergeu [11.5K]

Answer:

walks dogs for 3 hours on Saturday and 4 hours on

Sunday. She calculates her total pay to be $57.75.

Which equation could be used to check the reasonableness of her total?

Step-by-step explanation:

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5 0
2 years ago
There are many cylinders for which the height and radius are the same value. Let
VashaNatasha [74]

Answer:

Relation between V and c is represented as:

V = \pi c^{3}

When c is halved, V becomes \frac{1}{8} of its initial value.

Step-by-step explanation:

Height of cylinder = Radius of cylinder = c

Volume of cylinder = V

As per formula:

V = \pi r^{2} h

Where r is the radius of cylinder and

h is the height of cylinder

Putting r = h =c

V = \pi c^{2} \times c\\\Rightarrow V = \pi c^{3} ......(1)

The values of c is halved:

Using equation (1), New volume:

V' = \pi (\dfrac{c}{2})^3\\\Rightarrow \dfrac{1}{8} \pi c^{3}

By equation (1), putting \pi \times c^{3}  = V

V' = \dfrac{1}{8} \times V

So, when c is halved, V becomes \frac{1}{8} of its initial value.

3 0
3 years ago
10 POINTS!
AURORKA [14]
The triangular prism has 5 faces; two triangle faces and three rectangular faces.

We can find the area of one of the triangle faces by doing ((base * height) / 2). In this case, it would be ((2 * 2) / 2), which of course would equal 2"². Multiplied by two for the two triangles, which would be 4.

To find the area of one of the rectangles, we do (length * base), which would be (5 * 2) in our case, giving us 10. Multiply by 3 for the 3 faces, and we got 30"².

30 + 4 = 34"²
4 0
3 years ago
Read 2 more answers
I am thinking of a number
Lostsunrise [7]

Answer:

17

Step-by-step explanation:

Work backwards from your instructions

36/9 = 4

4 + 13 = 17

5 0
3 years ago
Which is the solution set to the inequality (4x-3)(2x-1)&gt=0?
Serjik [45]

(4x - 3)(2x - 1) ≥ 0

First, find the zeros:

4x - 3 = 0         2x - 1 = 0

x = \frac{3}{4}               x = \frac{1}{2}

Next, plot these points and choose test points on the outside and between the zeros:

←-------0------\frac{1}{2}------\frac{5}{8}------\frac{3}{4}------1------→

Lastly, plug in the test points and look for a positive result (since it is greater than 0).

Test Point 0: [4(0) - 3][2(0) - 1]  = ( - )( - ) = +  THIS WORKS!

Test Point \frac{5}{8}: [4(\frac{5}{8}) - 3][2(\frac{5}{8}) - 1]  = ( - )( + ) = -  <em>This does NOT work</em>

Test Point 1: [4(1) - 3][2(1) - 1]  = ( + )( + ) = +  THIS WORKS!

Answer: x ≤ \frac{1}{2}   or   x ≥ \frac{3}{4}

Interval Notation: (-∞, \frac{1}{2}] U [\frac{3}{4}, ∞)

Graph: ←------\frac{1}{2}          \frac{3}{4}--------→

5 0
3 years ago
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