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3 years ago

40-s=23 I don't understand it.

Mathematics

1 answer:

Pani-rosa [81]3 years ago

3 0

Answer:

s=-17

Step-by-step explanation:

your trying to get s by its self so you subtract 40 from 23

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-h (6h-1)<br> please hurry I really need help!

Sholpan [36]

-6h²+h is the answer

8 0

3 years ago

Which relation is a functiona) {(2.4), (2,-7) (2,11), (2,-15)}

tia_tia [17]

D is a function because there are no repeated x values

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6 0

3 years ago

CD is perpendicular to AB and passes through point C5, 12).

Aleksandr-060686 [28]

Answer:

x intercept of CD = 17

Step-by-step explanation:

We are given a line AB with its end coordinates. and Another line segment CD which is perpendicular to AB. We have the coordinates of C , and we are asked to find the x intercept of line CD.

For that we need to find the equation of CD

we have coordinates of C , and hence if we have slope of CD we can find equation of CD

Slope of CD can be determine with the help of slope of AB as CD⊥ AB

So, the slope of CD $mCD = -\frac{1}{mAB}$

Hence we start from determining slope of AB

slope is given as

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

$m= \frac{14-(-3)}{7-(-10)}=\frac{17}{17}=1$

Hence $mAB=1$

There fore $mCD=-1$

(∵ Product of Slopes of two perpendicular lines is always -1)

Now we find the equation of CD with the help of slope -1 and coordinates of C(5,12)

$m=\frac{y-y_1}{x-x_1}$

$-1=\frac{y-12}{x-5}$

$-x+5=y-12$

$y=-x+17$

Hence we have our equation , now in order to find the x intercept we keep y = 0 in it and solve for x

$0=-x+17$

$x=17$

Hence the x intercept is 17

8 0

3 years ago

Please Help!!!!!! it's due this morning

zhuklara [117]

Answer:

Check the solution in both equations. The solution is ( − 1, 2). Solve the system by graphing: {− x + y = 12 x + y = 10 . Solve the system by graphing: {2x + y = 6 x + y = 1 . In all the systems of linear equations so far, the lines intersected and the solution was one point.

Hope it helps!!!

6 0

3 years ago

5 times the sum of 40 and 80. what is the numerical expression that would represent the phrase?

vlabodo [156]

<h2>Answer:</h2>

<u>The expression is</u><u> 5(40+80)</u>

<h2>Step-by-step explanation:</h2>

The sum of 40 and 80 can be written as

(40+80)

and when we take the 5 times of the sum

we can write as

5(40+80)

3 0

3 years ago