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Norma-Jean [14]
3 years ago
12

please help and describe and correct the error in finding a solution of the equation in two variables! i will mark you brainlies

t !!!!

Mathematics
2 answers:
Angelina_Jolie [31]3 years ago
6 0

Answer:

see below

Step-by-step explanation:

The student put 5 in for y and 1 in for x.  It should be x=5 and y =1

y = 3x+2

1 = 3*5 +2

1 = 15+2

1 = 17

This is not true so this is not a solution

Black_prince [1.1K]3 years ago
4 0

Answer:

see below

Step-by-step explanation:

The student put 5 in for y and 1 in for x.  It should be x=5 and y =1

y = 3x+2

1 = 3*5 +2

1 = 15+2

1 = 17

This is not true so this is not a solution

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The perimeter of the triangle is 40 units.Which of the following equations could be used to find the value of x?
Artyom0805 [142]

Answer:

13x + 112 = 320.

Step-by-step explanation:

The perimeter is the sum of the 3 sides:

1/2 x + 3/8 x + 11 + 3/4 x + 3 = 40

1/2 x + 3/8 x  + 3/4 x + 3 + 11 = 40

1/2 x + 3/8 x  + 3/4 x + 14 = 40

Multiply through by 8 to remove the fractions:

4x + 3x + 6x  + 14 = 40

13x + 112 = 320.

5 0
3 years ago
How to simplify 4(2a)+7(-4b)+(3×c×5)
maw [93]
→ Solutions

⇒ Simplify <span><span><span>4<span>(<span>2a</span>)</span></span>+<span>7<span>(<span>−<span>4b</span></span>)</span></span></span>+<span><span>3c</span><span>(5)</span></span></span><span>⇒ </span><span><span><span><span><span>8a</span>+</span>−<span>28b</span></span>+<span>15<span>c

Answer
 </span></span></span></span><span>⇒ </span><span>8a−28b</span><span>+</span><span>15c</span>
5 0
3 years ago
Read 2 more answers
Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you.
makkiz [27]

Answer:

y = 12-(61) is the answer !!

7 0
3 years ago
John has a round swimming pool the distant from the center of the pool to the edge 3 m which formula can I used to find the area
DerKrebs [107]
The formula that you will use will be the formula for the area of a circle, which is as follows:
A= Pi r^2
(Pi times the radius squared)
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2 years ago
N x 50 = 5,000. Explain your solution
prohojiy [21]
In order to figure out what N is you have to isolate it by dividing by 50 on both sides as shown below:
N*50=5000\\\frac{n*50}{50}=\frac{5000}{50}\\n=100
3 0
3 years ago
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