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Harrizon [31]
3 years ago
10

Can I get help please ​

Mathematics
1 answer:
iren [92.7K]3 years ago
8 0
Answer: C

Explanation: We need to combine like terms, which means 7a and -12a and -8 and 4

7-12=5 and -8+4=-4
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On a coordinate plane, a solid straight line has a negative slope and goes through (0, 1) and (1, 0). Everything to the left of
pochemuha

Answer:

B

Step-by-step explanation:

The equation is

y<=-x+1.

We test all and figure that B is correct.

-2<=-3+1

-2<=-2.

Correct!

So the answer is B

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3 0
3 years ago
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A line l2 is perpendicular to the line x + 2y – 5 = 0 without computing the gradient of this
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Answer:

y=2x-2

Step-by-step explanation:

first, let's put the line into y=mx+b form (slope-intercept form), where m is the slope (or gradient) and b is the y intercept

add 5 to both sides

x+2y=5

subtract x from both sides

2y=-x+5

divide by 2

y=-1/2x+5/2

perpendicular lines have slopes (gradients) that are negative (one is positive, another one is negative) and reciprocal (they are essentially the same number, just "flipped")

to find the slope of I2:

since -1/2 is negative, that means the slope of I2 will be 2 (2/1 is the reciprocal of 1/2 (positive version of -1/2))

so here's our equation so far:

y=2x+b

now we need to find b

because line will pass through (3,4), we can use it to solve for b

substitute 4 as y and 3 as x

4=2(3)+b

multiply

4=6+b

-2=b

therefore the equation is y=2x-2

hope this helps!!

3 0
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The track is 3/5 of a mile long. If Tyrone jogged around it twice, how far did he run?
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