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wlad13 [49]
3 years ago
12

Solve the system of equations below by elimination. -2x-4y=-4 -x+7y=-20

Mathematics
1 answer:
Alik [6]3 years ago
5 0

Answer:

67

Step-by-step explanation:

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Help for both a and b
kipiarov [429]

Hi!

Remember that an x-intercept is a point in which the line touches the x-axis (the horizontal line). And, the y-intercept is a point in which the line touches the y-axis (the vertical/up and down line)

-----------------

For A)

The coordinate of the y-intercept is (0,1)

The coordinate of the x-intercept is (3,0)

For B)

The coordinate of the y-intercept is (0,0)

The coordinate of the x-intercept is (0,0) !

*both the x and y axis meet at the origin. So, a line that goes through the origin (0,0) is intersecting with BOTH the x and y-axis.

Hope I helped! Comment if you have any questions or concerns.

-Gabby5792

5 0
3 years ago
A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to build and 4 hours to test.
marta [7]
The answer is A
there is not enough hours to build everything and A has the right equation
8 0
3 years ago
Read 2 more answers
-2 + 3n< 28 and 6n - 7 > 17
sveta [45]

Answer:

N< 10 and N>4

Step-by-step explanation:

-2+3n< 28. =. 3n < 30. =. N < 10

+2. +2 ÷3. ÷3

6n - 7 > 17. =. 6n > 24. =. N > 4

+7. +7. ÷ 6. ÷ 6

8 0
3 years ago
Which expression is equivalent to 5y^3/(5y)^-2​
Serggg [28]

Answer:

5^3  y^5

125 y^5

Step-by-step explanation:

5y^3/(5y)^-2​

Distribute the exponent in the denominator

5y^3/(5 ^-2 y^-2)

A negative exponent in the denominator brings it to the numerator

5y^3 5 ^2 y^2​​

Combine like terms

5 * 5^2  * y^3 5^2

We know that a^b * a^c = a^(b+c)

5^(1+2) * y^( 3+2)

5^3  y^5

125 y^5

6 0
3 years ago
What is the graph of the system y = −2x + 3 and 2x + 4y = 8? <br><br> Select one:
zhuklara [117]
 y = -2x + 3....slope = -2, y int = 3

2x + 4y = 8
4y = -2x + 8
y = -1/2x + 2....slope is -1/2, y int is 2

this is graph C
5 0
3 years ago
Read 2 more answers
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