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Maurinko [17]
3 years ago
8

A student answered 140 questions correctly out of 200. What percent is this?

Mathematics
1 answer:
charle [14.2K]3 years ago
6 0
It’s 70%. 140/200=.7 and .7 to percentage is 70%
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The coordinates of P and Q are (2,6) and (4,5) respectively. Equation of a line RS is Y= 2X -3. Determine if the lines are paral
Travka [436]

Answer:

Perpendicular

Step-by-step explanation:

Given points P=(2,6) and Q=(4,5)

The line RS is y=2x-3.

Now we know that the line joining any two points (x1,y1) and (x2,y2) has slope m=\frac{y2-y1}{x2-x1}

Now the slope of the line PQ is

m1=\frac{5-6}{4-2}= -\frac{1}{2}

We know that  the slope of the line in the form y=mx+c is m

So the line RS has slope m2=2

Now two lines are parallel if m1=m2

And those two lines are perpendicular if m1*m2=-1

here m1= -\frac{1}{2}    and m2=2

clearly m1*m2=-1

Therefore the two given lines are perpendicular

7 0
3 years ago
Which country had control of Mali?<br><br>Italy<br>Great Britain<br>Spain<br>France
KatRina [158]

Answer:

400

Step-by-step explanation:

if the train travel in 150miles in 3hr then\

150/3=50miles a hr

50 x 8 = 400 miles

6 0
3 years ago
How do you solve 2x^2+x=-1?
Olin [163]

Answer:

x = 0.2

Step-by-step explanation:

2x^2+x=-1

4x + x = -1

5x = -1

divide by 5

5x/5 = -1/5

x = 0.2

3 0
3 years ago
Can someone help I think it is -15.
Vikki [24]
I believe that -15 is the answer
3 0
2 years ago
Easton wants to put a variety of donuts in a display case. The case is large enough to hold 100 donuts. Complete the table below
shutvik [7]

The amounts for each donut are given as follows:

  • Strawberry: 15.
  • Chocolate: 45.
  • Sprinkle: 40.

<h3>How to obtain the amounts?</h3>

The amounts for each donut are found applying the proportion, multiplying the decimal equivalent of each percentage by the total number of donuts.

From the problem, the total number of donuts is given as follows:

100 donuts.

The percentages of each type of donuts are given as follows:

  • Strawberry: 15%.
  • Chocolate: 45%.
  • Sprinkle: 40%.

The decimal equivalent of each percentage is given as follows:

  • Strawberry: 0.15.
  • Chocolate: 0.45.
  • Sprinkle: 0.4.

Hence the amounts are given as follows:

  • Strawberry: 15, as 0.15 x 100 = 15.
  • Chocolate: 45, as 0.45 x 100 = 45.
  • Sprinkle: 40, as 0.4 x 100 = 40.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

3 0
1 year ago
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