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3 years ago

Math question (working too, if possible)

Mathematics

1 answer:

Alecsey [184]3 years ago

7 0

0.015 x 600 =9 so more than expected

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Please solve with working out simultaneous equations 3x+2y=12 2x+2y=10

Novay_Z [31]

Here, 3x + 2y = 12
2x + 2y = 10

Subtract 2nd from 1st equation,
x = 2

Now, substitute in 2nd,
2(2) + 2y = 10
2y = 10 - 4
y = 6/2
y = 3

In short, Your Answer would be: (2, 3)

Hope this helps!

4 0

3 years ago

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Find the value of k so that the graph of 13y + kx = 4 and the line containing the points (5, -8) and (2, 4) are parallel.

guajiro [1.7K]

the graph of 13y + kx = 4 and the line containing the points (5, -8) and (2, 4) are parallel.

We find the slope of parallel line using two given points

(5, -8) and (2, 4)

Slope formula is

$slope = \frac{y_2-y_1}{x_2-x_1}$

$slope = \frac{4-(-8)}{2-5}$

$slope = \frac{12)}{-3}=-4$

so slope = -4

Slope of any two parallel lines are always equal

Lets find the slope of the equation 13y + kx = 4

Subtract kx on both sides

13 y = -kx + 4

Divide both sides by 13

$y= \frac{-kx}{13} + \frac{4}{13}$

Now slope = -k/13

We know slope of parallel lines are same

So the slope of 13y + kx = 4 is also -4

Hence we equation the slope and find out k

$\frac{-k}{13}=-4$

Multiply by 13 on both sides and divide by -1

k = 52

the value of k = 52

4 0

2 years ago

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One of the greatest assets of a secretary is often his/her ability on the keyboard of a computer. Mrs. Garcia has been recognize

Vilka [71]

The question is asking us to write a function that represents the total number of words ( y ) that Mrs. Garcia can type in x minutes. Then we have to calculate how many words she can type in 49 minutes. In 1 minute she can type 70 words, in 2 minutes 140 etc. Answer: the function is: y = 70 * x. In 49 minutes ( x = 49 ) : y = 49 * 70 = 3,430. In 49 minutes she would type 3,430 words.

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2 years ago

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How do I find the degrees

Natalija [7]

U mutiply the two mumber then then divide by 2

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3 years ago

Using the fraction 4/6 , which is the denominator?

Ivahew [28]

The 6 from 4/6 is the denominator.

Hope this helps <3

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2 years ago