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Valentin [98]
3 years ago
15

If you wanted an output of 7 for the rule y = -x + 4, what would you need as an input?

Mathematics
1 answer:
Sergio039 [100]3 years ago
6 0
Y is your output, so y=7. Now you have 7=-x+4. You then would subtract 4 from both sides, leaving you with 3=-x. Then divide -1 from both sides so you have x=-3. Your answer is -3.
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The area of a square concrete slab is 20 square feet. Find the side length of the square concrete slab if the area is increase b
guapka [62]

The side length of the square concrete slab if the area is increased by 25% is 5feet

The formula for calculating the area of a square is expressed as:

A =  L² where:

L is the side length of the square

Given the area of the square concrete slab = 20 square feet

20 = L²

L =√20

If the area is increased  by 25%, new area will be:

An = 20 + (0.25*20)

An = 20 + 5

An = 25 sq.ft

Get the new length

An = Ln²

25 =   Ln²

Ln = √25

Ln = 5feet

Hence the side length of the square concrete slab if the area is increased by 25% is 5feet

Learn more here: brainly.com/question/11300671

7 0
3 years ago
What does the expression 12f + 24 represent?<br><br> Answers:
PSYCHO15rus [73]
24 more than 12 times a number

7 0
3 years ago
Read 2 more answers
RS=2x-8, ST= 11, RT= x+10
swat32

Answer:

X=7 ST=11 RT=17

Step-by-step explanation:

RT=RS+ST. RS= 2(7)-8. ST=11

X+10=2x-8+11. =14-8=6. RT= x+10

X+10=2x+3. RS=6. 7+10=17

10=x+3. RT=17

X=7

4 0
2 years ago
Three times the sum of a number and 7 is equivalent to 57.
Zarrin [17]

Equivalent expressions are expressions that have the same values.

The expression is 3(x + 7) = 57 and the number is 12

Represent the number with x.

So, the sum of a number (x) and 7 would be represented as: x + 7

Three times the sum would be represented as: 3(x + 7)

This expression is equivalent to 57.

So, we have:

3(x + 7) = 57

Divide both sides of the equation by 57

x + 7 = 19

Subtract 7 from both sides of the equation

x + 7 - 7 = 19 - 7

x = 12

Hence, the number is 12

Read more about equivalent expressions at:

brainly.com/question/2972832

6 0
2 years ago
Read 2 more answers
PLZ HELP THIS IS DUE IN TEN MINUTES I WILL MARK BRAINLIEST
yanalaym [24]
The diameter is 8cm your welcome
8 0
3 years ago
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