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k0ka [10]
3 years ago
8

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

Mathematics
2 answers:
adell [148]3 years ago
8 0
...........................
..........................
...........................

goldenfox [79]3 years ago
7 0

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

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If you start with a number, add 5 , then multiply by 7, the result is133. what was the original number?
Natalija [7]
(x+5)*7=133
7x+35=133
7x=98
x=98/7
x=14
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3 years ago
Isreal has $57 in the bank. He adds $32 to it each month. He wants to buy a bike that cost $435. Every month the bike's price is
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Answer:

9

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3 years ago
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Answer:

Cumin has the least price per ounce

Step-by-step explanation:

1. Divide each spice price to the size

Cumin -> 4.80/1.5= 3.2  

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3 years ago
What is the equation of the exponential graph shown?
Evgesh-ka [11]

Answer:

  • f(x) = 100*(1/2)ˣ

Step-by-step explanation:

<u>Exponential function is:</u>

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<u>Use two points on the graph to determine the value of a and b:</u>

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<u>Find the values of a and b:</u>

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<u>The function is:</u>

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