2. What is the area of a square computer screen with 21-in. sides? A. 220 sq. in. B. 42 sq. in. C. 441 sq. in. D. 84 sq. in

Answers

Answer 1

Answer: The area of a square is l^2=A because the length and width are the same length. So this would be 21^2 or 21*21. Your answer will be 441in^2.

Answer 2

Answer: THE ANSWER IS C: 441 SQ IN..............
GOOD LUCK

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A vendor sells 60 pieces of fruit that are either apples or oranges. The ratio of apples to oranges is 3: 2. How many apples did the vendor sell? How many oranges did the vendor sell?

Answers

36 apples, 24 oranges

For this, each 'group' contains 5 fruits; three are apples; two are oranges. Take 60/5 is 12. then multiply 12 by each number of apples and oranges in each group, getting 36 apples and 24 oranges.

3x−8y+44=0 7x=12y−56

Answers

Answer:

(4, 7 )

Step-by-step explanation:

given the 2 equations

3x - 8y + 44 = 0 → (1)

7x = 12y - 56 ( subtract 12y - 56 from bpth sides )

7x - 12y + 56 = 0 → (2)

multiplying (1) by 7 and (2) by - 3 and adding the result will eliminate x

21x - 56y + 308 = 0 → (3)

-21x + 36y - 168 = 0 → (4)

add (3) and (4) term by term to eliminate x

(21x - 21x) + (- 56y + 36y) + (308 - 168) = 0

0 - 20y + 140 = 0 ( subtract 140 from both sides )

- 20y = - 140 ( divide both sides by - 20 )

y = 7

substitute y = 7 into either of the 2 orinal equations and solve for x

substituting into (1)

3x - 8(7) + 44 = 0

3x - 56 + 44 = 0

3x - 12 = 0 ( add 12 to both sides )

3x = 12 ( divide both sides by 3 )

x = 4

solution is (4, 7 )

Find the equation of the line that satisfies the given conditionsx intercept (7,0)
slope 2

standard form
slope intercept form

Answers

To find the equation use this form:

y - y0 = m * (x - x0)

y - 0 = 2 (x - 7)

y = 2x - 14

That is the slope intercept form

The standard form is Ax + By = C

Where A, B and C have to be integer and simplified (divided by the greatest common divisor of A, B and C).

Starting with y = 2x -14

2x - y = 14.

Tha is the standard form

Add.
5x^2- 5x+1
2x^2+9x-6

Answers

Answer: C. 7x^2+4x-5

Step-by-step explanation:

Add as you would normally. Exponents can look scary but don’t mind them. First add 5x^2 & 2x^2 to get 7x^2. Then do -5x + 9x. An easier way of doing that would be 9x-5x to get 4x. Lastly do 1 -6 to get 5.

How many degrees is x?

Answers

Short Answer x = 66
Remark
2x is the supplement of a 48 degree angle.
Supplementary angles add up to 180°

Equation
48 + x + x = 180 Collect like terms

Solution
48 + 2x = 180 Subtract 48 from both sides.
2x = 180 - 48
2x = 132 Divide by 2
x = 66 <<<<<<< Answer

x+x+48°=180°
2x+48°=180°
x=(180°-48°)/2
=66°

There are 28 pens in a full box. how many pens are in 35 full boxes

Answers

Answer:

980

Step-by-step explanation:

Multiply the number of pens in a box by the number of boxes.

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