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Sedaia [141]
3 years ago
11

Please Help!!!! Will Mark Brainliest!!!! Pleaseeee!! 20 Points!!!!

Mathematics
1 answer:
Alina [70]3 years ago
5 0

Answer:

C

C

C

THE MONEY

Step-by-step explanation:

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Matt says he can find the sum of 45+50 without rewriting it. Explain how you can solve this problem using mental math.
goldenfox [79]

Answer:

95

Step-by-step explanation:

Being a sum of two elements that include units and tens, we can make the sums of the units first, and then add the tens together.

So, if we have 45+50, we can first separate the units:  5 + 0 =5

Then, we separate the tens: 4+5=9

Now, we only join the sums of the units and tens, and that will be the end result.   95

7 0
4 years ago
Read 2 more answers
Yellowstone National Park has 124 wolves living in it. The park covers 3472 square miles. What is the population density of wolv
Serggg [28]
<span>The answer is 0.0357 Wolves/mi. The total amount of square miles at the park is 3472, with 124 wolves living in the park. So we take the miles of the park and divide it by the number of wolves living in the park. 124/3472=0.0357 wolves/mil</span>
3 0
3 years ago
Read 2 more answers
If x2 + mx + m is a perfect-square trinomial, which equation must be true?
noname [10]
<h2>Hello!</h2>

The answer is:

The third option,

x^{2}+mx+m=(x+2)^{2}

<h2>Why?</h2>

We are looking for an equation that establishes a relationship between the perfect-square trinomial and the givens notable products.

So, we are looking for a notable product that gives us a value of "m" that is the coefficient of the linear term (x) and it's also the constant term.

- Trying with the two first options, we have:

(x+1)^{2}=x^{2}+2x+ 1\\\\(x-1)^{2}=x^{2}-2x+ 1

We can see that for these first two options, the value of m has not the same value for the coefficient of the linear term and the constant term since m is equal 2 and the constant number is not 2.

- Trying with the third option, we have:

(x+2)^{2}=x^{2}+2*(2*x)+2^{2}=x^{2} +4x+4

Now, we can see that the value of m is the same for the coefficient of the linear term and the constant term, we can see that m is equal to 4.

So, the correct option is the third option, because

m=4

x^{2} +mx+m=(x+2)^{2}=x^{2} +4x+4=x^{2} +mx+m

Have a nice day!

4 0
4 years ago
Read 2 more answers
Donald bought a box of golf balls for $9.17. There were 18 golf balls in the box. About how much did each golf ball cost? Rename
Ivenika [448]

Answer:

Each golf ball costs about $0.51

1. Divide $9.17 by 18

The answer you will get is 0.509

2. Round 0.509

The answer you will get is 0.51

So therefor, the answer to this question how much did each golf ball cost is $0.51 per golf ball.

8 0
3 years ago
How to calulate what percentage a number is of a larger number
Tju [1.3M]

Answer: you just multiply the big by the percentage. But change the percentage to a decimal. There only two operating when dealing with percentage. Add or subtract. Once you multiply the percentage with big number add or subtract the answers with the big number.

Step-by-step explanation:

8 0
3 years ago
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