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fgiga [73]
3 years ago
11

Barbara is planning a party . she invited some school friends and 2 times as many friends from her swimming club as school frien

ds . if a total of 21 friends came to her party , how many school friends did she invite
Mathematics
1 answer:
densk [106]3 years ago
5 0
She invited 7 school friends
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Order the sides of each triangle from shortest to longest.
Svetradugi [14.3K]

Answer:

A.

Step-by-step explanation:

the line that's PR is longer than OR

7 0
3 years ago
Please can someone do itpleaseeeeeeee
alukav5142 [94]

Answer:

a=250

b=10

done...

3 0
2 years ago
The price p in dollars and the quantity x sold of a certain product obey the demand equation -1/5x+100 (0≤ x ≤ 500)
olga nikolaevna [1]

Answer:

  • See below

Step-by-step explanation:

<u>We have:</u>

  • p = -1/5x + 100 = -0.2x + 100

a) <u>The revenue is:</u>

  • R = px
  • R = x( -0.2x + 100)
  • R= -0.2x² + 100x

b) <u>x = 200, find R:</u>

  • R = -0.2(200²) + 100(200) = 12000

c) <u>This is a quadratic function and the maximum value is obtained at vertex.</u>

  • x = -100/(-0.2*2) = 250 is the required quantity

d) <u>The max revenue is obtained when -0.2x + 100 at max:</u>

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5 0
3 years ago
Read 2 more answers
Sabrina is x years old.
Elan Coil [88]

Answer:

10

Step-by-step explanation:

If Sabrina is 5 & Michael is 7. (5×7=35)

Michael is 7, & he is 3 yrs younger than Meghan, who is 10. And Meghan is twice as old as Sabrina, when Sabrina is 5 (5×2=10).

8 0
3 years ago
Read 2 more answers
19-4q+q-11 simply the experssion
Black_prince [1.1K]

━━━━━━━☆☆━━━━━━━

▹ Answer

<em>8 - 3q</em>

▹ Step-by-Step Explanation

19 - 4q + q - 11

Combine like terms in terms of q:

-4q + q = -3q

Combine like terms:

19 - 11 = 8

Final answer:

8 - 3q

Hope this helps!

CloutAnswers ❁

━━━━━━━☆☆━━━━━━━

4 0
3 years ago
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