MATHEMATICS MIDDLE SCHOOL

Let h(x) = -2x - 5. If h(x) = -25, find x

Answers

Answer 1
Answer:

Answer:

10 =x

Step-by-step explanation:

Let h(x) = -2x - 5. If h(x) = -25

-25 = -2x-5

Solve for x

Add 5 to each side.

-25+5 = -2x-5+5

-20 = -2x

Divide by -2

-20/-2 = -2x/-2

10 =x

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The populations of cities A and B are 2.6 * 10^5 and 1,560,000 respectively. the population of city C is twice the population of city Bthe population of city C is how many times the population of city A?

Answers

Answer:

City C is 12 times the population of city A.

Step-by-step explanation:

AI-generated answer

To find out how many times the population of city C is compared to city A, we first need to determine the population of city C.

Given that the population of city B is 1,560,000 and the population of city C is twice the population of city B, we can calculate the population of city C as follows:

Population of city C = 2 * Population of city B

= 2 * 1,560,000

= 3,120,000

Now that we know the population of city C is 3,120,000, we can compare it to the population of city A.

The population of city A is given as 2.6 * 10^5 (which is scientific notation for 2.6 multiplied by 10 raised to the power of 5).

To compare the population of city C to city A, we divide the population of city C by the population of city A:

Population of city C / Population of city A = 3,120,000 / 2.6 * 10^5

To simplify this calculation, we can express both numbers in the same format:

3,120,000 = 3.12 * 10^6 (since we move the decimal point 6 places to the right)

2.6 * 10^5 = 260,000 (as we move the decimal point 5 places to the right)

Now we can calculate:

Population of city C / Population of city A = 3.12 * 10^6 / 260,000

Dividing these two numbers, we get:

Population of city C / Population of city A = 12

Therefore, the population of city C is 12 times the population of city A.

Answer:

City C is 12 times the population of city A.

Step-by-step explanation:

Jason ran 325 meters farther then kim ran 4.2 kilometers how many meters did Jason run. Estimate

Answers

First, you would have to convert the kilometers to meters. So, each kilometer is 1000 meters, so you would have to multiply 4.2 and 1000. That gets you to 4200 meters. Since the question is asking you to estimate, I would round 4200 to 4000 and 325 to 300. Because Jason ran 325 meters farther than Kim, you would add 300 and 4000 to get 4300 meters. 
*Answer: Jason ran about 4,300 meters.* 

Cafeteria Meas Sow lo Graders i m may Meals \ Tu-sum ‘ ,, w ‘ Friday 1 )7 If the mean number of meals for an 5 days was 69, how many meals did the cafeteria sen on Friday A 5.1 : There are 5 Tamika's group 8 MA ~ made by the hangup on the test was 85 The stores “ s * students are shown c =

Answers

aritmetic average=sum of values / number of values
x=number of meals that the cafetery sold in Friday.

aritmetic average=69
number of days=5

69=(64+71+73+60+x) / 5
69=(268+x) / 5
69*5=268+x
268+x=345
x=345-268=77

Answer: C. 77 meals.

5 1/3 + ( 2 1/3 + 1 1/3)=

Answers

okay so you want to do the parentheses first okay? So 2.3333...+1.3333333 is?3.666 or 3 2/3. So you got that right? So then 5 1/3+ 3 2/3. You get an easy 9. Because 1/3+ 2/3 adds up to 3/3, and is normally written as 1. So add a one to 5+3=8+1.
Use order of operations, by starting with the parenthesis first. 2 1/3 + 1 1/3 = 3 2/3. Then you would have to finish the rest of the problem by adding 5 1/3 to 3 2/3. Answer: 9

Li wants to buy a jacket that is originally priced at $65.00. Today he store is advertising the jacket for 40% off the original price. Part A: What is the sale price of the jacket?

Part B: Li has a coupon for an additional 10% off the sale price.

What is the price of the jacket after the coupon?

Answers

Part A: 
if the price is $65 and if 40% is off so Li should pay 60% of it.
So 60% of $65 is:
60/100 = ?/65 
? is the sale price:
65*60/100 = $39 
Part B:
if he has 10% coupon for off then he should pay 90% of $39:
90/100 = ?/39 
so ? is the answer:
39*90/100 = $35.1 :)))
I hope this is helpful
have a nice day

| If f(x) = (3x – 1, find f(2) and f(-2)

Answers

Answer:

f(2)=5, f(-2)=-7

Step-by-step explanation:

Step 1 : f(2)=3(x)-1

            f(2)=5

Step 2 : f(-2)=3(x)-1

              f(-2)=-7
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