From 145 pounds to 132 pounds decrease

Answers

Answer 1

Answer: All you have to do is 145-132=13 is the answer

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The sun of two number is 23. Their difference is 9. Write a system of equations to represent the situation. What are the two numbers?

Answers

Let one number be x
and second number be y
ATQ
x + y = 23 ---> 1st equation
similarly,
x - y = 9 ----> 2nd equation
( adding y on both sides )
x = 9 + y -----> 3rd equation
Substituting 3rd equation in 1st equation or substituting value of x in 1st equation.
9 + y + y = 23
( adding like terms on each side)
9 + 2y = 23
( subtracting 9 from both sides)
2y = 23 - 9
2y = 14
( Dividing 2 from both sides )
y = 7

Substituting value of Y in 1st equation
x + 7 = 23
( subtracting 7 from both sides )
x = 16

So, two numbers are 7 & 16
or
x = 16 & y = 7

Hope this helps you :)

x+y=23
x-y=9
subtract the second from the first and you get 2y=14
Divide 2 from both side so y=7
and since x+7=23, x=16
so the final answer is x=16, y=7

The temperature at 6:00 a.m. was ‐3.5°C. From 6:00 to 7:00, the temperature increased 2.5°C. From 7:00 to 8:00, it decreased by 0.25°C, and from 8:00 to 11:00, the temperature dropped 3.25°C. Which expression shows the temperature in °C at 11:00 a.m.?

Answers

The expression that shows the temperature in °C is $-3.5+2.5+(-0.25)+(-3.25)$ .

Step-by-step explanation:

Step 1:

The initial temperature at 6.00 am was $-3.5$ °C.

Step 2:

From 6.00 to 7.00 am, the temperature increased by another 2.5°C, so the temperature at 7.00 am was $(-3.5 + 2.5)$ °C.

Step 3:

From 7.00 to 8.00 a.m, the temperature decreased by another 0.25°C, so the temperature at 8.00 am was $(-3.5+2.5+(-0.25))$ °C.

Step 4:

From 8.00 to 11.00 a.m, the temperature dropped by another 3.25 °C, so the temperature at 11.00 am was $(-3.5+2.5+(-0.25)+-(3.25))$ °C which is represented by the fourth option.

Answer:

A i did did question on think through math think it is the answer

Step-by-step explanation:

2.75 + .003 + .158 =

Answers

2.75 Answer is 2.911

0.003 Make sure you line up the decimal points like shown in example

0.158

_________

2.911

the answer 2.911 you add 2.75
+.003
+.158
----------------
2.911

Instructor Cost per hourMark $100 for 10 hours
Rick $80 for 9 hours
Steve $75 for 8 hours
Andy $60 for 5 hours

Meg wants to take tennis lessons. In the chart, four instructors are listed with what they charge. Which instructor gives the best deal?
A)
Mark
Eliminate
B)
Rick
C)
Andy
D)
Steve

Answers

Mark Charges $10 an hour,
Rick Charges $8.88 (Roughly) an hour,
Steve Charges $9.37 (Roughly) an hour,
Andy Charges $12 an hour,
So Rick Would Be The Best.

I'm Not The Best At Maths, So Don't Take It As 100% But I'm Confident. Also I Hope I Got What You Were Asking!

What does x equal if the equation is 4x+15=9x

Answers

Answer:

x=3

Step-by-step explanation:

4x+15=9x

-4x on both sides

15=5x

Divide equation by 5 on both sides

Answer:

x = 3

Step-by-step explanation:

Collect constant terms to RHS and Simplify

4x + 15 + (-15) = 9x + -15

4x = 9x - 15

Collect Terms with:- x to LHS and SImplify

4x + 9x = 9x - 15 + 9x

-5x = -15

Divide both sides by (-5) and Simplify

-5x = -15

-5x/-5 = -15/-5

x = 3

Kevin spends $11.25 on lunch every week during the school year. If there are 35.5 weeks during the school year, how much does Kevin spend the entire school year?Remember to round to the nearest penny.

Answers

First, you multiply. You get $399.375. when you round it to the nearest penny, look behind the decimal, see if it's going down to 0, or going higher than 5, then round. the overall answer is going to be..............$399 and 40 cents.

Lunch per week times weeks total
11.25×35.5=399.375
rounded to the nearest penny is the same as the hundredths place which is $399.38 since the next decimal place is 5 or more

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