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geniusboy [140]
3 years ago
15

Which statement below is not a valid part of this proof?

Mathematics
1 answer:
DiKsa [7]3 years ago
8 0
There is nothing below
we cannot help you if there is nothing
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The sum of two numbers is 26. The larger number is 5 more than twice the smaller. What are
babymother [125]

Answer:

Step-by-step explanation:

Let n = the smaller of the two numbers, and since the other number is 5 more than twice the smaller number n, then ...

Let 2n + 5 = the second and larger number.

Since the sum of the two unknown numbers is 26, then we can write the following equation to be solved for n as follows:

n + (2n + 5) = 26

n + 2n + 5 = 26

Collecting like-terms on the left, we get:

3n + 5 = 26

3n + 5 - 5 = 26 - 5

3n + 0 = 21

3n = 21

(3n)/3 = 21/3

(3/3)n = 21/3

(1)n = 7

n = 7

Therefore, ...

2n + 5 = 2(7) + 5

= 14 + 5

= 19

CHECK:

n + (2n + 5) = 26

7 + (19) = 26

7 + 19 = 26

26 = 26

Therefore, the two desired numbers whose sum is 26 are indeed 7 and 19.

7 0
3 years ago
Read 2 more answers
What is the volume of this unit cube?
xxTIMURxx [149]

Answer:

1 cubic centimeter

Step-by-step explanation:

V=l³ And l=1

so V=1³ so

V=1

since we cubed something it is in cubic centimeters so

1 cubic centimeter

3 0
3 years ago
Name three collinear points.<br> D<br> В.<br> C С<br> N
dolphi86 [110]

Answer:

BD

AC

SN       (might not be one)

AB

Step-by-step explanation:

5 0
3 years ago
-2 (x + 3z) + 4x - 3y + 2z​
andriy [413]

Answer:

-2 (x + 3z) + 4x - 3y + 2z​

-2x-6x+4x-3y+2z

2x-4z-3y

hope it helps...

have a nice day!

6 0
3 years ago
Read 2 more answers
The unknown measures of one triangle are about:
olga_2 [115]
Answer: but I need the points sorri
8 0
3 years ago
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