MATHEMATICS MIDDLE SCHOOL

CALCULAR O PERÍMETRO DE UM RETANGULO, SABENDO-SE QUE SUA BASE E ALTURA DIFEREM 12 M E QUE ESTA É 1/3 DAQUELA

Answers

Answer 1
Answer:

perimeter =48

18+18+6+6=48

x-12=x/3

Multiply both sides by 3

3x-36=x

3x=x+36

2x=36

x=18

18-12=18/3

6=6

One side 18 another side 6

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Esteban has a big jar of change in his room. He has 600 coins total, and 240 of them are pennies. What percentage of the coins are pennies?

Answers

Answer:

600 coins=40%

Complete the equation that is related to the given equation.t – 1.8 = –2.3



t = –2.3 + _

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wouldn't it just be

t = -2.3 + (1.8)

A number y minus 12 is no more than −32.

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Y - 12 < -32 is the answer

Answer:

Y - 12 < -32

Step-by-step explanation:

The daily high temperature of Elk Creek drops by 1.2°C every day. What is the net change in the daily high temperature after two calendar weeks?

Answers

Answer:

16.8°C

Step-by-step explanation:

Given :The daily high temperature of Elk Creek drops by 1.2°C every day.

To Find:What is the net change in the daily high temperature after two calendar weeks?

Solution:

Since we are given that The daily high temperature of Elk Creek drops by 1.2°C every day.

1 week = 7 days.

So, 2 weeks = 7 * 2 = 14 days

Temperature drops per day = 1.2°C

So, temperature drops in 14 days = 1.2* 14 =16.8^(\circ)C

Hence the net change in the daily high temperature after two calendar weeks is 16.8°C.

Answer:

16.8

Step-by-step explanation:

3(x-4)=-36
solve x using balance method

Answers

x-12=-108
12. 12

×=-9

What is the slope of y-3=-4(x-5)

Answers

Answer:

-4

Step-by-step explanation:

y-3=-4(x-5)

y=-4x+20+3

y=-4x+23

y=mx+b where m=slope and b=y-intercept
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