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kupik [55]
3 years ago
13

Write an equation of the line through (-2, - 1) having slope 8/7?

Mathematics
1 answer:
Usimov [2.4K]3 years ago
6 0

Answer:

When slope and one point are known follow instructions on this page:

http://www.1728.org/distance.htm

Calculate "b" from this equation:

b = y -mx where "m" is the slope

We'll use the point given (-2, -1) for "x" and "y"

b = -1 -(8/7) * -2

b = -1 + 16/7

b = 9/7

then we enter "b" and the slope into this equation

y = 8/7x +9/7

y = 1.142857 x + 1.2857142857

Step-by-step explanation:

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levacccp [35]

Answer:

The surface area would be 76m square!

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Ms. Velez will use both x gray bricks and y red bricks to build a wall around her garden. Gray bricks cost $0.45 each and red br
Finger [1]

Let

x--------> the number of gray bricks

y--------> the number of red bricks

we know that

y < \frac{x}{2} ------> inequality 1

0.45x+0.58y \leq 200 <em>-----> </em>inequality 2

therefore

<u>the answer is</u>

x > 0

0.45x+0.58y≤200

6 0
3 years ago
A multiple must be greater than or equal to the largest starting number. True or False
podryga [215]

I'll use multiples of 2 and 4 as an example:

Multiples of 2: 2, 4, 6, 8...

Multiples of 4: 4, 8, 12, 16...

The least common multiple in this case is 4. The LCM is always ≥ the largest starting number, which is 4 for this example. Therefore, the statement is true.

<em>Hope this helps! :)</em>

8 0
4 years ago
The areas of two similar triangles are 72dm2 and 50dm2. The sum of their perimeters is 226dm. What is the perimeter of each of t
zloy xaker [14]

Answer:

103=  p small

plarge = 123

Step-by-step explanation:

We know that the the ratio of the areas is the scale factor squared/

Larger triangle over smaller triangle

72

----- = scale factor ^2

50

simplify by dividing by 2 on top and bottom

36

----- = scale factor ^2

25

Take the square root of each side

sqrt(36)

-------------- = sqrt(scale factor ^2)

sqrt(25)

6

-------------- = scale factor

5

The ratio of the perimeters is the scale factor

p large             6

-------------- = ----------------

 p small                5

Using cross products

6 p large = 5 p small

We know the sum is 226

p large + p small = 226

p large = 226 - p small

We have 2 equation and 2 unknowns

6 p large = 5 p small

Substitute for p large

6 (226 - p small) = 5 p small

1356 - 6 p small = 5 p small

Add 6 p small to each side

1356 = 11 p small

divide by 11

1356/11 =  p small

P large = 226-1356/11

p large = 2486/11-1356/11

plarge = 1130/11

The solution requires whole number answers so

1356/11 =  p small

123.27 which rounds to 123

plarge = 1130/11

plarge = 102.7272 = 103

6 0
3 years ago
Daniel is using logarithms to solve the equation 2^4x = 14. Which of the following equations would be equivalent to his original
ycow [4]
Remember
log_a(b^c)=(c)log_a(b)
so
2^{4x}=14 take the log of both sides
log(2^{4x})=log(14) or
4xlog(2)=log(14)

B is the answer
4 0
3 years ago
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