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Stolb23 [73]
3 years ago
8

What is the best estimate for the product of 289 and 7

Mathematics
1 answer:
Katarina [22]3 years ago
7 0
I would estimate it as (300 x 7) = 2100 

Then I would subtract (11 x 7) + 77 from that to get the exact answer of 2023 

~~~~~~~~~~ 
I didn't use a calculator or paper. The 'trick' is to notice that 289 = (300 - 11)
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Determine which lines in the diagram are parallel. A) a || b B) b || c C) a || c D) b || d
spayn [35]

Line a and line c are parallel lines that are given as a || c. Then the correct option is C.

<h3>How are parallel straight lines related?</h3>

Parallel lines have the same slope since the slope is like a measure of steepness and since parallel lines are of the same steepness, thus, are of the same slope.

Since the given parallel line has equation y = 2x + 2, thus its slope is 2 and thus, the slope of the needed line is 2 too.

Then we have

The distance between line a and line c is constant. Then line a and line c are parallel lines.

Line a || line c. Then the correct option is C.

Learn more about parallel lines here:

brainly.com/question/13857011

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7 0
2 years ago
KINNDAAAA need help. Will give Brainly! Need the full equation pls!
Alexxandr [17]
Hey, I’m pretty sure the answer is y=1/2x + 0.

To explain, we can plug the x value into the equation for all of the x values, and we will get our y value.

So the first one,

y=1/2(1) + 0 —> 1/2

The second one,

y=1/2(2) + 0 —> 1

And so forth, the rest of the equations will be correct. I hope that helps ! :D
4 0
3 years ago
WILL MARK YOU BRAINLIEST HURRY
Softa [21]

Answer:

34;34;112

Step-by-step explanation:

It's a Isosceles triangle so the equation is

x+17=4x-34

x-4x=-35-17

-3x=-51

x=-51/-3

x=17

17+17=34

4.17-34=34

6.17+10=112

3 0
3 years ago
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What is the answer to 3x=-3x-6
ahrayia [7]

Answer:

x=-1

Step-by-step explanation:

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3 years ago
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What percent of a yard is in a foot?
Norma-Jean [14]
There are 3 feet in 1 yard so each foot is 1/3
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3 years ago
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