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Olenka [21]
3 years ago
10

A student started solving the system of equations by elimination and made a mistake in solving x. What is the error?

Mathematics
1 answer:
Lorico [155]3 years ago
5 0
Answer is A.

step 1 , 16 was not multiplied by 9
should be

54x - 9y = 144

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Find the equation of the line in slope-intercept form containing the points (6, -1) and (-3, 2).
egoroff_w [7]
Slope intercepf is y=mx+b wherem=slope and b= y intercept
slope is found by doing
(y1-y2)/(x1-x2)
points are (6,-1) and (-3,2)
(x,y)
x1=6
y1=-1
x2=-3
y2=2
subsitute
(-1-2)/(6-(-2))=-3/(6+2)=-3/8
slope=-3/8
subsitute
y=-3/8x+b
subsitute and solve for b
(-3,2)
x=-3
y=2
2=-3/8(-3)+b
2=9/8+b
2=16/8
subtract 9/8 from both sides
16/8-9/8=b
7/8=b
y=-3/9x+7/8 is the equation
5 0
3 years ago
Thank u if u help I’m in question 16 out of 35:(
ValentinkaMS [17]

Answer:

The answer is 20 because when you divide 56 by 2.8 you get 20

8 0
4 years ago
Simplify, and write your answer as a numeral:<br><br> ( The problem is in the picture I attached )
Vika [28.1K]

Answer:

45

Step-by-step explanation:

(7-4)=3

3^2=9

9*5=45

6 0
3 years ago
What is 0.000000025 written in exponent form<br><br><br><br><br> plz hurry
Evgesh-ka [11]

Answer:2.5×10^-5. (And i think u meant in Scientific Notation)

Step-by-step explanation//Give thanks(and or Brainliest) if helpful (≧▽≦)//

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Need help ASAP! ——————————————————————————————
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Step-by-step explanation:

4 0
3 years ago
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