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4 years ago

Pls, I need help! 20 points

Mathematics

1 answer:

Montano1993 [528]4 years ago

8 0

Answer:

5, 5, 10, 15

Step-by-step explanation:

He spent 1/4 of 20 which is 5 on food, 1/2 of 20 which is 10 on music, so if you add those you get 15. 20-15 is equal to 5.

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A rectangular window is topped with a semicircle on top. the height of the rectangular part is 1 more than 3 times its width , w

tensa zangetsu [6.8K]

In general for a rectangle of dimensions w by h and a semicircle of diameter w we get an area:

$A = wh + \frac 1 2 \pi (\frac w 2)^2$

The halfs are because a semicircle is half a circle and a radius is half a diameter.

We're told

$h = 1+ 3w$

Substituting,

$A(w) = w(1+3w) + \frac 1 2 \pi (\frac w 2)^2$

Answer: B

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3 years ago

Find the slope of the line.

katovenus [111]

I hope this helps and i hope you have a good day :)

3 0

3 years ago

It cost Louis five dollars to park his car at a parking meter for two hours what is the price to park for one hour job bar model

SashulF [63]

2.5 dollars (I think) or 2.50

4 0

3 years ago

Read 2 more answers

X + y = 4 -2x + 3y = 7

Leokris [45]

Answer:

x=-1+2/3y

Step-by-step explanation:

i sent a picture explaining what I did. it's easier to see than explain.

6 0

3 years ago

Read 2 more answers

dr fjeldsted had 91 students in his first quarter calcus class. if the ration of math majors to non math majors if 4to 9 how man

vivado [14]

Answer:

The are 28 math majors in the class.

Step-by-step explanation:

We can solve this question using a rule of three.

The ratio of math majors to non math majors is 4 to 9

This means that 4+9 = 13 students, 4 are math majors.

The class has 91 students. How many are math majors?

13 students - 4 math majors

91 students - x math majors

$13x = 4*91$

$x = \frac{4*91}{13}$

$x = 28$

The are 28 math majors in the class.

5 0

3 years ago