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Otrada [13]
3 years ago
11

The perimeter of a rectangle is 42 cm. the pength is 3 cm more than the width, write an equation

Mathematics
1 answer:
Orlov [11]3 years ago
5 0

Length: x+3

Width: x

(x+x+3)*2 = 42

(2x+3)*2 = 42

ANSWER: 4x+6 = 42

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1. Simplify:<br>4(4y-7y^{2})-9(5y+2)<br><br>2. Simplify:<br>24 – 4(5y – 6z) + 3y – 7z
Greeley [361]

Answer:

1)-

How to solve your question

Your question is

4(4−72)−9(5+2)

4(4y-7y^{2})-9(5y+2)4(4y−7y2)−9(5y+2)

Simplify

1

Rearrange terms

4(4−72)−9(5+2)

4({\color{#c92786}{4y-7y^{2}}})-9(5y+2)4(4y−7y2)−9(5y+2)

4(−72+4)−9(5+2)

4({\color{#c92786}{-7y^{2}+4y}})-9(5y+2)4(−7y2+4y)−9(5y+2)

2

Distribute

4(−72+4)−9(5+2)

{\color{#c92786}{4(-7y^{2}+4y)}}-9(5y+2)4(−7y2+4y)−9(5y+2)

−282+16−9(5+2)

{\color{#c92786}{-28y^{2}+16y}}-9(5y+2)−28y2+16y−9(5y+2)

3

Distribute

−282+16−9(5+2)

-28y^{2}+16y{\color{#c92786}{-9(5y+2)}}−28y2+16y−9(5y+2)

−282+16−45−18

-28y^{2}+16y{\color{#c92786}{-45y-18}}−28y2+16y−45y−18

4

Combine like terms

2)

−17y+17z+24

See steps

Step by Step Solution:



STEP1:Equation at the end of step 1

((24 - 4 • (5y - 6z)) + 3y) - 7z

STEP2:

Final result :

-17y + 17z + 24

−282+16−45−18

-28y^{2}+{\color{#c92786}{16y}}{\color{#c92786}{-45y}}-18−28y2+16y−45y−18

−282−29−18

-28y^{2}{\color{#c92786}{-29y}}-18−28y2−29y−18

Solution

−282−29−18

4 0
2 years ago
What is the slope between 3,2 and 6,3
sergiy2304 [10]

Answer:

1/3

Step-by-step explanation:

3 0
3 years ago
How much is the final cost of my $29,990 car at 6.5%
zheka24 [161]

The period required to pay for the car is not given. However let us assume this interest rate of 6.5% is per annum, on simple interest  terms.

I= PRT

where I is the interest accrued, P is the principal, R is the rate and T is the time.

If the car is paid for in one year then the final cost will be:

I = 29990 × 6.5% × 1

6.5% must be expressed as a decimal fraction so  we divide by 100 to get 0.065

I= 29990 × 0.065 × 1

I = 1,949.35

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If the car is paid for in five years on simple interest terms then the final cost will be :

I = 29990 × 0.065 ×5 = 9,746.75

29990 + 9.746.75 =  39,736.75 dollars


7 0
3 years ago
5/9 divided by 10/11
Alja [10]
The answer is 11/18 = 0.6111
5 0
2 years ago
Read 2 more answers
A number written in just numbers is in:
Elena-2011 [213]

Answer:

Standard form

Step-by-step explanation:

7 0
2 years ago
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