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Feliz [49]
3 years ago
10

How do you solve -3 x 5?

Mathematics
1 answer:
LiRa [457]3 years ago
5 0
-15 is the answer, you just multiply it. And add the sign
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What is the equation of a line that passes through the point (4, 2) and is perpendicular to the line whose equation is y=x/3−1 ?
vredina [299]

Answer:

y = -3x + 14

Step-by-step explanation:

y=x/3−1

The slope of the perpendicular line is the reciprocal of the given equation.

Given is 1/3x. Perpendicular slope is m=-3x

Substitute the perpendicular slope and the point (4,2) in an equation

y = mx + b

2 = -3(4) + b

2 = -12 + b

Find b by isolating

b = 2+12

b = 14

Substitute the slope -3x and b=14 to find the equation of the line.

y = mx + b

y = -3x + 14

7 0
4 years ago
Help me find X????? I'm not good with triangle at all so please help me as soon as you can. I have 9 weeks testing tomorrow and
photoshop1234 [79]
X=7.5 (d)
Since the 16 side is proportional to the 12 side, x is proportional to 10. 16/12 is 1.3333 so 10/1.333 is 7.5.
4 0
4 years ago
3/8 = r + 2/3 I really need help I don't get it!!
liberstina [14]

Answer:

-7/24 = r

Step-by-step explanation:

3/8 = r + 2/3

Subtract 2/3 from each side

3/8-2/3 = r + 2/3-2/3

3/8 - 2/3 = r

Get a common denominator or 24

3/8 *3/3    - 2/3 *8/8    =r

9/24   - 16/24   =r

-7/24 = r

4 0
4 years ago
Read 2 more answers
Can someone help me? im not really good with slope
RideAnS [48]
1. m=1/2 b=4 y=1/2x+4
2. m=-1/2 b=-3 y=-1/2x-3
3. m=-3/2 b=-1 y=-3/2x-1
4. m=1/2 b=-1 y=1/2x-1
7 0
3 years ago
Read 2 more answers
The area of a rectangular painting is given by the trinomial x2 + 4x - 21. What are the possible dimensions of the painting? Use
zloy xaker [14]
To find the dimensions you can just factor the equation...

x^2+4x-21

x^2-3x+7x-21

x(x-3)+7(x-3)

(x+7)(x-3) and this is equal to LW or WL

And note that x>3 for any possible solution.

3 0
3 years ago
Read 2 more answers
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