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ipn [44]
2 years ago
15

For each diagram below, write and solve an equation.

Mathematics
1 answer:
dmitriy555 [2]2 years ago
8 0
A. 2x + 7 = 13
2x = 13-7
2x= 6
X = 6/2
X=3

B. 2n + 24 = 44
2n= 20
N= 10
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Determine whether the two expressions are equivalent. Explain your reasoning.
dlinn [17]
Let us evaluate each pair of expressions one at a time.
8. (n²+4) - n² and 4n.
    (n²+4) - n² = n²+ 4 - n² = 4 which is not equal to 4n.
    NOT EQUIVALENT

9. 3x + 5 and  2(x + 3)
    2(x + 3) = 2x + 6  which is not equal to 3x + 5.
    NOT EQUIVALENT

10. 15 - 6x and  15(1 - 6x)
    15(1 - 6x) = 15 - 90x which is not equal to 15 - 6x
    NOT EQUVALENT

11. (y + y + 2 + y) + 3y and 6y + 2
    (y +y +2 + y) + 3y = y+y+y +2 + 3y = 3y + 2 + 3y = 6y + 2.
    It matches the other expression.
    EQUIVALENT

12. 8y - 3 + 10y and 3(6 - 1)
    8y - 3 + 10y = 8y + 10y - 3 = 18y - 3
    3(6 - 1) = 3(5) = 15
    The two expressions do not match.
    NOT EQUIVALENT.

Answer: Only the expressions in number 11 are equivalent.
6 0
3 years ago
The expression (2x^2)^3 is equivalent to _____.<br><br> 6x^2<br> 6x^5<br> 8x^6
4vir4ik [10]

Answer:

8x^{6}

Step-by-step explanation:

To solve this problem is multiply 2 by 2 and then 2 which gives you 8.

Then you will add 2+2+2 and get six. For when multiply exponents you are adding.

8 0
3 years ago
Read 2 more answers
1/4 divided by 2/3 show work pls
NARA [144]
\dfrac{1}{4}:\dfrac{2}{3}=\dfrac{1}{4}\cdot\dfrac{3}{2}=\dfrac{1\cdot3}{4\cdot2}=\boxed{\frac{3}{8}}
5 0
3 years ago
Find the range of 10 12 13 15 16.5
alex41 [277]

Answer:

15.5

Step-by-step explanation:

16.5-10

=15.5

So 15.5 is the range

6 0
3 years ago
Which expression means a number divided by 3? A. r – 3 B. r ÷ 3 C. r + 3 D. r × 3
nirvana33 [79]
B.....is has division...................
7 0
3 years ago
Read 2 more answers
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