MATHEMATICS MIDDLE SCHOOL

78 is what percent of 312

Answers

Answer 1

Answer:

1. We assume, that the number 312 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 312, so we can write it down as 100%=312.

4. We know, that x% equals 78 of the output value, so we can write it down as x%=78.

5. Now we have two simple equations:

1) 100%=312

2) x%=78

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=312/78

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 78 is what percent of 312

100%/x%=312/78

(100/x)*x=(312/78)*x - we multiply both sides of the equation by x

100=4*x - we divide both sides of the equation by (4) to get x

100/4=x

25=x

x=25

now we have:

78 is 25% of 312

Answer 2

Answer: About 25%. 78/312. Hope this helps! Please mark as brainliest.

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The equation of the line of best fit of a scatter plot is y = 7x − 9. What is the slope of the equation?−9, −7, 7, 9

Answers

Answer:

Slope m = 7.

Step-by-step explanation:

Given : y = 7x − 9.

To find : What is the slope of the equation.

Solution : We have given that y = 7x − 9.

On comparing with y = mx + b

Where, m slope of the line and b = y intercept.

Then slope of y = 7x − 9.

m = 7 and y intercept = -9.

Therefore, Slope m = 7.

I love math. Well the formula is y=mx+b. the slope is m so the answer is 7

What is the area of a parallegram that has a base of 12 3/4 in and a height of 1/2 in

Answers

So the parallelogram Formula is B×H
Plug in
12 3\4 ×1\2
51\4 × 1\2
51\8 = 6.375
So if you solve you will be gated 6.375

area=base times height
base=12 and 3/4
height=1/2
area=12 and 3/4 times 1/2
12 and 3/4=12+3/4
area=(12+3/4) times 1/2
distribute using distributive propery a(b+c)=ab+ac
area=12 times 1/2+3/4 times 1/2
area=6+3/8
area=6 and 3/8 square inches (square inches=in^2))

Which inequality is true when n=4? $2n >6$
$n+3<7$
$9-n≥(greater than or equal to) 13$
$(n)/(12) ≥ 3$

Answers

To find out which inequality is true, we need to plug in n=4.

$2n>6$
$2(4)>6$
$8>6$

And since 8 is really greater than 6, this inequality is true! :)

$n+3<7$
$4+3 < 7$
$7 < 7$

7 is not less than 7. So this inequality is false.

$9- n \geq 13$
$9-4 \geq 13$
$5 \geq 13$

5 is not greater than or equal to 13, so this inequality is false

$(n)/(12) \geq 3$
$(4)/(12) \geq 3$
$(1)/(3) \geq 3$

And 1/3 is not greater than 3, so this inequality is also false.

Ali says if two lines share a point they cannot be parallel do you agree explain

Answers

Yes, parallel lines do not touch each other ever.

How are parallel straight lines related?

Parallellines have the same slope since the slope is like a measure of steepness and since parallel lines are of the same steepness, thus, are of the same slope.

Since the given parallel line has equation y = 2x + 2, thus its slope is 2 and thus, the slope of the needed line is 2 too.

We are given that Ali says if two lines share a point they cannot be parallel .

Horizontal refers to something that goes parallel to ground level. Of course it depends on from where you see that thing.

When you slice an object horizontally, you cut it parallel to ground.

We know that parallel linesdo not touch each other ever.

so that's make ali statement correct.

Learn more about parallellines here:

brainly.com/question/13857011

#SPJ5

Yes, parallel lines do not touch ever, that's what makes them parallel.

Help me please this is worth 27 points!!!! I GIVE THANKS ANSWER ALL QUESTIONS TOO!!!!

Answers

1. The area of a rectangle is calculated by multiplying its width and lengh (which you can also understand by looking at the figures in table, column 3 is clearly column 2 times column 1) so we can write it Area = 8w
2.
A. y=0,8x+3
B. x is the number of miles driven by the taxi - y is the total cost of the ride

3. You can see that y=3x-5 in each of the case. Which means that y=37 for x=14
4. For each x in the table we can see that y is 3 times higher reduced by 2 units so we can write it y=3x-2

Did it help?

X+2/8=1/2 what is x explain how you got the answer

Answers

x= 1/4

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

x=1/4

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