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2 years ago

Solve the system of equations Y equals 7X +43, Y equals 2X +13

Mathematics

1 answer:

Maksim231197 [3]2 years ago

4 0

$7x+43=2x+13\implies 5x=-30\implies x=-6$

Hope this helps.

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41,000 rounded to the nearest 10,000

zloy xaker [14]

40,000 is the asnwer

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3 years ago

A standard dartboard has a diameter of 18 in. What is its area to the nearest square inch?

Reptile [31]

The meaning of the area is the measurement of a surface in this case a circle, which can be find by using the formula $A= \pi r^{2}$ , where r is equal to the radius of the circle.

In this exercise is given that the diameter of a standard cardboard is 18 inches or a radius of 9 inches and it is asked to find its area. Therefore, to find the area of the circle you should substitute the value of the radius into the previous mention formula.

$A= \pi r^{2}$
$A= \pi (9 in)^{2}$
$A= \pi (81 in^{2})$
$A=254.47 in^{2}$

The area of the standard dartboard is 254.47 square inches or 254 square inches.

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3 years ago

After the dimensions of an equilateral triangle are increased by a scale factor of 2.5, the perimeter is 45 units. What were the

Otrada [13]

Answer:

Original side of triangle = 6 units

Step-by-step explanation:

Given:

Perimeter = 45 units

Scale factor = 2.5 (Increase)

Find:

Original side of triangle = ?

Computation:

Original Perimeter = Perimeter / Scale factor

Original Perimeter = 45 units / 2.5

Original Perimeter = 18 units

Perimeter of an equilateral triangle = 3 (Side)

18 units = 3 (Side)

Side = 6 units

Original side of triangle = 6 units

4 0

3 years ago

Kay is 5'2, paul is 4'8, and kevin 5'8. what is the average heigt of the three?

lesya692 [45]

The average is 5'2
:)

7 0

3 years ago

Lin scored 18 marks in a test and Jon scored 12 marks.

saw5 [17]

Answer:

=60

Step-by-step explanation:

18 + 12

=30

18/30 × 100%

=60

8 0

3 years ago