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solniwko [45]
3 years ago
8

Use the commutative property of multiplication to rewrite 10.5.12. Which expression is equivalent? O A. 10.5.(5+5) OB. 10. 12.5

O C. (10.5) + 12 OD. 10 + 5 + 12​
Mathematics
1 answer:
valina [46]3 years ago
7 0

Answer:

b

Step-by-step explanation:

i did the math for over an hour and got the same answer 25 times

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A 100-point test has x questions worth 2 points apiece and y questions worth 4 points apiece. Write an equation in Standard Form
Fofino [41]

Answer:

<h3>2x+2y = 100</h3>

Step-by-step explanation:

Total number of points in the test = 100points

If the test has x questions worth 2 points apiece, then the total number of points for x questions with 2 points each will be 2 * x i.e 2x........  1

Also, if y questions worth 4 points apiece then the total number of points for y questions with 4 points each will be 4 * x i.e 4x ....... 2

Total points = eqn 1 + eqn 2

100 = 2x+ 2y

Rearrange

2x+2y = 100

Hence an equation in Standard Form that would model this situation is 2x+2y = 100

6 0
3 years ago
Simplify Expression-
kumpel [21]
In all these expressions you have a power of a power. 
You can solve them simply multiplying the exponents.
Remember that any quantity raised to the zero is equal to 1.
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11) (n^4)^8 = n^(4×8) = n^32

13) (q^10)^10 = q^(10×10) = q^100

15) (x^3)^-5 = x^[3×(-5)] = x^(-15)

17) (z^8)^0z^5 = z^(8×0) z^5 = z^0 z^5 = 1×z^5 = z^5

<span> 19) (c^3)^5(d^3)^0 = c^(3</span>×5) d^(3×0) = c^15 d^0 = c^15×1 = c^15
5 0
3 years ago
Tas
BigorU [14]

Answer: (8,10)

Step-by-step explanation:

To go from A to C, we go right 2 units and up 6 units.

So, if we let the fourth vertex be D, then to go from B to D, we must also go right 2 units and up 6 units from B.

Therefore, the answer is (8, 10).

3 0
2 years ago
Eight more than the difference of a number 39 is 1
natali 33 [55]

Answer:

46

Step-by-step explanation:

i don't know what you meant so i did this

8+(39-n)=1

and then solved for n

7 0
3 years ago
Can anyone do all this?! <br> It's due in tomorrow
Rashid [163]
Q2. 35200
Q3. 40
Q4. 150
Q5. 98
6 0
3 years ago
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