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lord [1]
3 years ago
14

Someone pls help me :)

Mathematics
1 answer:
klasskru [66]3 years ago
4 0

1.

25%

.3 + .2 + .15 + .1 = .75

1.00 - .75 = .25

2.

120 students

There are 400 total students

.3 * 400 = 120

4.

tennis-

.1 * 400 = 40 students prefer tennis

football-

.25 * 400 = 100 students prefer football

140 students like football/tennis

5.

400 students

There are four quarters in a whole

.25% = 100

100 * 4 = 400

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The function f(x) = 2x + 210 represents the number of calories burned when exercising, where x is the number of hours spent exer
Alex787 [66]

This means 339 calories burned while combining diet with 1 hour of exercise

Step-by-step explanation:

Given the functions as:

f(x)=2x+210  

g(x)=2x+125 then

(f+g)(x) = 2x+210 +2x+125 = 4x +335

(f+g)(1) = 4(1)+335

           =339

This means 339 calories burned while combining diet with 1 hour of exercise

Learn More

Functions :brainly.com/question/3122826

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3 0
3 years ago
Read 2 more answers
What is this? im not sure which one
Free_Kalibri [48]

Answer:

-2

Step-by-step explanation:

-7 + 5 = -2

If you have negatives and then add, the negative number will decrease.

if the question was -7 - 5, the answer would be -12. This is because when you subtract a number from a negative, the negative number becomes bigger.

8 0
3 years ago
Remember to identify the length, width,
Amiraneli [1.4K]

Answer:

If the prism is trapezoid then you need to find the height and use this formula

1/2 x a+b x h

This has been done below you only need to fill in the height and do the shape for 3cm x 2cm as you haven't been clear in your question.

Volume = 8 x h x 10 = 80 x h cm^3

Hope this helps.

Step-by-step explanation:

Slope triangle prism and or rectangle

The area can be seen either by finding height of the triangle or working out the rectangle and halving the rectangle.

Step-by-step explanation:

Volume

6 x 8 = 48cm^2

48 x 5 = 230cm^2 for double (rectangle prism of 6 x8)

385/2 = 115cm^2 triangle slope prism

---------------

Area first

trapezoid front measures 6,5, 10

1/2 x 6 + 5 x h

=1/2 x 6 + 5 x h

= 8 x h x 10= 80 x h

Volume = 8 x h x 10 = 80 x h cm^3

5 0
3 years ago
Is Event B dependent or independent of Event A? A: A green ball is drawn from a box with five balls and placed next to the box.
Zarrin [17]

Answer:

Step-by-step explanation:

Given that events are as follows:

A: A green ball is drawn from a box with five balls and placed next to the box. B: A red ball is drawn next and placed next to the green one

i.e. drawings of balls are made without replacement

Suppose there are m green balls and n red balls, where m+n =5

Prob of drawing green ball =m/5

After I draw made remaining are n red balls and m-1 green balls

Prob of drawing red ball now =n/4

Prob for drawing one green and one red simultaneously = \frac{mC1*nC1}{5C2} \\= \frac{mn}{10}

Product of the two probabilities = \frac{m}{5} *\frac{n}{4} \\=\frac{mn}{20}

6 0
4 years ago
What number should be added to -3 to get a sum of 7?
Dafna1 [17]

Answer:

4 is the answer to the question

Step-by-step explanation:

-7 + 4 = - 3

7 0
4 years ago
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