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prisoha [69]
3 years ago
14

Find the sum using distributive property 72+9

Mathematics
1 answer:
andrew-mc [135]3 years ago
5 0

Answer:

72 + 9 = 9(8 + 1) = 9(9) = 81

Step-by-step explanation:

Starting with 72 + 9, factor out the 9, obtaining 9(8 + 1),

which in turn can be rewritten as 9(9).  Multplying, we get 81.  This is the final answer, equivalent to 72 + 9.

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Scrat [10]

Answer:

4Na + 1O2 > 2Na2O

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2FE2O3 > 4FE + 3O2

Step-by-step explanation:

1. Identify the Products and Reactants(always do O2 last)

2. determine how many atoms of each element are present on each side of the equation

3. Add Coefficients and never change the subscripts. If there's a coefficient in front of any compound, it is distributed to both elements.

4. find the total number of atoms on both sides of the equation and make sure they equal with each other

7 0
4 years ago
1. if m&lt;b = 60 what is AB<br><br><br>2. if m&lt;b =45 what is the perimeter of the trapezoid.​
nika2105 [10]

Answer:....

Step-by-step explanation:

first we need to find the base of the triangle, so the total is 20, they also give us 12, so we subtract 20-12=8 now divide. 8/2=4. Now we use the 4 and the 60. We use SOH-CAH-TOA, they give us the base now we need to find AB which is the hypotenuse. So we take out the TOA, and the 4 is the adjacent so we take out the SOH, we have CAH now, so we use cos. Now equation time....

cos60=\frac{4}{x}   since x is the bottom we switch \frac{4}{cos60}, which equals 8. AB=8.

Now to find the perimeter. We still use the 4 to find the hypotenuse so we  can find the outside side. For this one they tell us to use 45, so now lets see what method we use. SOH-CAH-TOA. We need the hypotenuse and they give us the adjacent, so we use cos again. Now setting up the equation...

cos45=\frac{4}{x}    x is at the bottom again to we switch.

\frac{4}{cos45}   which equals to 5.657 or you can round it. Now we add everything.

20+12+5.657+5.657= 45.314 or you can round it to 45.

5 0
3 years ago
Please help this is due today
Aliun [14]
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8 0
3 years ago
What is the interest earned based upon a principal of $1,000 at a rate of 6% over 8 years????
Nata [24]
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4 0
4 years ago
Factor out the GCF, then solve the following expression.<br> 2w² - 8w = 0
rusak2 [61]

Answer:

w = 0, 4

Step-by-step explanation:

The GCF is 2w

2w (w-4) = 0

w = 0 or 4

7 0
3 years ago
Read 2 more answers
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