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andreev551 [17]
3 years ago
14

The line segment joining the points a (3,2) and b (5,1) is divided at the point p in the ratio 1:2 and p lies on the line 2x-18y

+k=0. find the value of k
Mathematics
1 answer:
kumpel [21]3 years ago
8 0

your answer would be 2x-18y+k=0

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I'm so confused about solving by substitution.
Komok [63]

Answer:

x = 3

y = 2

Step-by-step explanation:

Given

y = -2x + 8

y = x - 1

Substitute x - 1 for y in the first equation

We have

y = -2x + 8

x - 1 = -2x + 8

Add 1 to both sides to eliminate 1 on the left side

x - 1 + 1 = -2x + 8 + 1

x = -2x + 9

Add 2x to both sides to eliminate 2x on the right side

x + 2x = -2x + 2x + 9

3x = 9

Divide both sides by 3 to isolate x

3x/3 = 9/3

x = 3

Now substitute 3 for x in either equations to get y

Using the second equation, we have

y = x - 1

y = 3 - 1

y = 2

x = 3 and

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6 0
3 years ago
What ratios are equivalent to 5:6 the options are 14:21 6:10 40:48
g100num [7]
This is simply testing if proportions are valid.

Guess-and-check, so the answer would be 40:48, since 5 x 8 = 40 and 6 x 8 = 48, where 8 is the set "constant" number
6 0
3 years ago
Simplify expression <br><br> -6-9
Ilia_Sergeevich [38]

Answer:

-6 + (-9)= -15

add the negatives

6 0
3 years ago
Read 2 more answers
The altitude of an object, d, can be modeled using the equation below. d=-16t^2+vt+h From the edge of a 486-foot cliff, Peyton s
Ugo [173]

Answer:

9 seconds

Step-by-step explanation:

d=-16t²+vt+h

The water level will be at 0 level (distance = 0)

0 = 16t² - 90t - 486

8t² - 45t - 243 = 0

(t - 9) (8t + 27) = 0

t = 9 or t = -27

since time should be a positive number, so t = 9 second

3 0
3 years ago
You formally challenge the classification of information and the classifying agency provides a partial response. What is your re
wlad13 [49]

Answer:

I will forward the challenge to the ISCAP.

Step-by-step explanation:

If the classifying agency does not provide a full response within 120 days, then as per my responsibility, I will forward the challenge to the ISCAP.

ISCAP is the Inter agency security classification appeals panel.

ISCAP is a deciding panel that decides on certain classification or declassification issues to its users, with a forum for further review.

4 0
4 years ago
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