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qwelly [4]
3 years ago
10

10. help a 8th grader outt please ill mark you brainlist

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
4 0

Answer:

I think its A though i could be wrong sorry

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One number is 3 less than twice another. If their sum is 39 find the numbers
DedPeter [7]

Answer:

The numbers are 14 and 25

Step-by-step explanation:

Let one of the numbers be x. The second number we are told is 3 less than twice x. The second number will thus be;

2x - 3

The sum of the numbers is thus;

x + (2x - 3) = 3x - 3

But the sum of the numbers is said to be 39, therefore;

3x - 3 = 39

3x = 42

x = 14

The second number is thus;

2(14) - 3 = 28 - 3 = 25

5 0
4 years ago
Find three consecutive integers whose sum is equal to −354. Three consecutive integers in ascending form are __,__,__
mixer [17]

Answer: -119, -120, and -121

Step-by-step explanation: This problem states that the sum of three consecutive integers is -354 and it asks us to find the integers. Three consecutive integers can be represented as followed.

X ⇒ <em>first integer</em>

X + 1 ⇒ <em>second integer</em>

X + 2 ⇒<em> third integer</em>

<em />

Since the sum of our three consecutive integers is -354, we can set up an equation to represent this.

X + X + 1 + X + 2 = -354

Now, we can simplify on the left side of the equation.

3x + 3 = -354

      -3      -3    ← subtract 3 on both sides of the equation

3x = -357

÷3     ÷3     ← divide both sides by 3

X = -119

X ⇒ <em>first integer = </em><em>-119</em>

X + 1 ⇒ <em>second integer = </em><em>-120</em>

X + 2 ⇒<em> third integer = </em><em>-121</em>

<em />

Therefore, our three consecutive integers are -119, -120, and -121.

6 0
4 years ago
Read 2 more answers
A heated piece of metal cools according to the function c(x) = (.5)x − 10, where x is measured in hours. A device is added that
Kobotan [32]
The question is asking to choose among the following choices that states the temperature of the metal after five hours, and base on my research and further calculation, the possible answer among the following is 26 degree. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarifications
5 0
3 years ago
I have no idea how to solve this. please help?
matrenka [14]
I believe it’s c

π=C/2r
8 0
3 years ago
Solve by factoring<br> 4x^2=x
Delvig [45]

Answer:

x= 0, 1/2

Step-by-step explanation:

6 0
3 years ago
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