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nevsk [136]
3 years ago
12

Are two lines with the same slope and different y intercept perpendicular sometimes true?

Mathematics
1 answer:
lara [203]3 years ago
6 0
I don't believe so, last time i checked for two lines to be perpendicular they needed to have opposite reciprocal slopes.

For Example
If one line has a slope of 5
The second line has to have a slope of -1/5 
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3 3/8 divided by 2 1/4 =
denpristay [2]

Answer:

1.5 or 1/5

Step-by-step explanation:

Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators.

6 0
3 years ago
Brenda says a good estimate for 50× 31 3/4 is 800. is this correct? Explain.
QveST [7]
At first glance, it seems like a good estimate; big numbers make bigger number.
But, this is multiplication, which means big numbers will make an extraordinarily big number, in proportion to the numbers themselves.
If you round 31 3/4 up to 32, you can multiply that by 50. To make the estimate easier, multiply 50 by 2,
50 x 2 = 100
Take the zeros off 50 and 30 to make this a bit simpler, and multiply 5 by 3,
5 x 3 = 15
Add each of the zeros you took off to the 15 to make 1500 (1 zero was taken off 50, and 1 off of 30),
And then add 1500 to that other 100
1500 + 100 = 1600
A good estimate for 50 x 31 3/4 would be 1600, not 800.
Therefore,
No. Brenda's estimate of 800 is NOT a good estimate.
3 0
4 years ago
Read 2 more answers
Elijah invested $79,000 in an account paying an interest rate of 2% compounded
shusha [124]

Answer: He would have 16590 but if we want to know in total

it would be, 11060 (just from the percent) if you want to know in total add 16590 and 79,000 which would be (95,590 for Landon) and (Elijah would be 90060) in total

Step-by-step explanation:So in total Landon would have:

Landon-(95,590)

Elijah-(90,060)

So Landon would have 5,530 more dollars in 7 years than Elijah.

6 0
3 years ago
A certain microorganism has a diameter of 1.03 x 108 cm. How is this number written in standard decimal notation?
Paladinen [302]

Answer:

111.24 is the decimal notation

1.1124 x10^2 is the scientific notation

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Solve the matrix equation X-A=B for X if A= [8, -2, -3, 9, -1, 5] and B= [0, 7, 2 -3, -7, -1]
djverab [1.8K]

If <em>X</em> - <em>A</em> = <em>B</em>, then <em>X</em> = <em>A</em> + <em>B</em>. So

X = \begin{bmatrix}8&-2\\-3&9\\-1&5\end{bmatrix} + \begin{bmatrix}0&7\\2&-3\\-7&-1\end{bmatrix} \\\\ X = \begin{bmatrix}8+0&-2+7\\-3+2&9-3\\-1-7&5-1\end{bmatrix} \\\\ X = \begin{bmatrix}8&5\\-1&6\\-8&4\end{bmatrix}

3 0
3 years ago
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