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Paul [167]
3 years ago
7

(awarding brainliest) i’m not that smart pls help.

Mathematics
1 answer:
Alenkasestr [34]3 years ago
3 0

Answer:

4) (2)(4)(3.14) = 25.12 m

5) (12)(3.14) = 37.68 ft

6) (2)(2)(3.14) = 12.56 yd

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Sean bought 1.8 pounds of gummy bears and 0.6 pounds of jelly beans and paid $10.26. He went back to the store the following wee
Ymorist [56]

Answer:

Gummy bears $3.20/lbs

Jelly beans $7.50/lbs

Step-by-step explanation:

For this we will substitute gummy bear price for "x" and jelly bean price for "y" which creates this system (also assuming there is no sales tax involved):

1.8x + 0.6y = 10.26

1.2x + 1.5y = 15.09

Then once solved, answers come out to be (x,y) = (16/5,15/2) which is (3.2,7.5)

7 0
2 years ago
A student raises her grade average from a 75 to a 90. What was the percent of increase in the student’s grade average? Round you
Zigmanuir [339]
=(new-old)/old *100%
=(90-75)/75 *100%
=20%
<span> hope it helps</span>

5 0
3 years ago
A school has 510 male students and 850 female students. If a student from the school is selected at random, what is the probabil
Colt1911 [192]

Answer:

0.375

Step-by-step explanation:

510 male out of a total of 1360

510/1360 = 0.375

5 0
3 years ago
Which expression is the simplified form of -10 + 3x - x - 7x + 5x + 7 + 2x?
Mars2501 [29]

Answer:

B

Step-by-step explanation:

-10 + 3x - x - 7x + 5x + 7 + 2x

combine like terms

-10 + 3x - x - 7x + 5x + 7 + 2x

-3 + 3x - x - 7x + 5x + 2x

the -7x and the 5x + 2x cancel out to 0, so for the x terms we are left with 3x -x to get 2x

= 2x - 3

8 0
3 years ago
How do I simplify the square root: 7 times the square root of 81
DENIUS [597]
7\cdot\sqrt{81}=7\cdot\sqrt{9\cdot9}=7\cdot9=\boxed{63}
7 0
3 years ago
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