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3 years ago

15 points!

Mathematics

1 answer:

Phantasy [73]3 years ago

8 0

Hi there! You are provided with two points, this is all you need to calculate the line's slope.

The equation for slope is:

$\frac{y2 - y1}{x2 - x1}$

$\frac{10 - 8}{3 - 7} = -\frac{2}{4}$

Slope: -2/4

Point slope form, or y-y1 = m(x - x1). All we have to do is take the x and y coordinates of either point, as well as the slope, and plug them into the equation.

y - 10 = -2/4(x - 3)

Write the equation in slope-intercept form (y=mx+b)

$y - 10 = -2/4(x-3)\\y = -2/4(x-3) + 10\\y = -2/4x + 1.5 + 10\\y = -2/4x + 11.5$

A) -2/4

B) y - 10 = -2/4(x - 3)

C) y = -2/4x + 11.5

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What's the answer n give examples please

melisa1 [442]

The answer would be 1.0404 because 1.02 multiplied by 1.02 is 1.0404

7 0

3 years ago

Find two consecutive integers such that the sum of their squares is 145.

DiKsa [7]

Answer: 8 and 9 or -9 and -8

Step-by-step explanation:

Let $x$ be the first of the two integers. Then, since the numbers are consecutive, $x+1$ is the other integer. We then know that the sum of the squares of $x$ and $x+1$ is equal to 145. So, now we have the equation

$x^2+(x+1)^2=145$

which can be expanded and simplified to

$2x^2+2x+1=145$

which then gives us the quadratic equation

$2x^2+2x-144=0$

This can then be factored into

$2(x^2+x-72)=0$

Which can be simplified further into

$2(x-8)(x+9)=0$

So either $x=8$ or $x=-9$ . This gives us two solutions: 8 and 9 or -9 and -8.

Hope this helps! CHEERS!

7 0

4 years ago

A community hall is shape of a cuboid. The hall is 40 m long, 15 m wide and 3 m high. The community hall needs re-decorating wit

Licemer1 [7]

Total cost for tiles and paints is $924.
Step-by-step explanation:
We have been given that a community hall is in the shape of a cuboid. The hall is 40m long 15m high and 3m wide.
The paint will be required for 4 walls and ceiling.
Let us find area of walls and ceiling.

Therefore, the area of walls and ceiling is 1410 square meters.
Given: Cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. Therefore,

Therefore, the total painting cost is $564.
Tiles will be required for floor. Let us find the area of floor.

Given: 1m squared floor tiles costs $3. So,

Therefore, the total cost for tiles is $360.
Now let us find combined total cost of tiles and paint.

Therefore, the combined total cost of tiles and paint is $924.

3 0

3 years ago

What is the solution to the proportion? 3 y − 8 12 = y 5 3 y - 8 12 = y 5

VMariaS [17]

What is the solution to the proportion? 3 y − 8 12 = y 5 3 y - 8 12 = y 5

Answer:

there is no solution

3 0

3 years ago

What is: d (100,000)=1/10x+500

Sergio039 [100]

X is 995,000

d is 100,000 respectfully

4 0

4 years ago