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mezya [45]
3 years ago
5

A chemist has a 100 mL beaker of a 60% solution.

Mathematics
1 answer:
masya89 [10]3 years ago
7 0

Answer:

hi

Step-by-step explanation:

im new here sorry bout not answering it. :)


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Select the correct answer. Simplify the expression. What classification describes the resulting polynomial? (3x2 − 11x − 4) − (2
loris [4]

Answer:

A : quadratic trinomial

Step-by-step explanation:

Given

(3x² - 11x - 4) - (2x² - x - 6)

Distribute both parenthesis, noting the second is distributed by - 1

= 3x² - 11x - 4 - 2x² + x + 6 ← collect like terms

= x² - 10x + 2 ←  this is a quadratic with 3 terms, thus quadratic trinomial → A

Hope helped.. Mark BRAINLIEST

Thanks!!

7 0
4 years ago
Read 2 more answers
A circle is drawn inside a square.
zhannawk [14.2K]

Shaded area = 21.46

Step-by-step explanation:

First find area of square,

Area = length × width

A = 20 × 20

A = 400 cm^2

Secondly, find area of circle

Area of circle = (π)r^2

A = (π)10^2

A = 100 π

Thirdly, find the area outside of the circle

Area of square - Area of circle

400cm^2 - 100π

= 85.84

lastly divide the answer by 4 to find the shaded area

85.84 ÷ 4

= 21.46

5 0
2 years ago
The number of volunteers to walk dogs at the local animal shelter last year was 20 this year the number of volunteers has risen
Alex73 [517]

There is 150% increase in the number of volunteers.

Step-by-step explanation:

Given,

Old number of volunteers = 20

New number of volunteers = 50

Change = New value - Old value

Change = 50 - 20 = +30

The positive sign indicates the increase.

Percent increase = \frac{Change}{Old\ value}*100\\

Percent\ increase=\frac{30}{20}*100\\\\Percent\ increase=\frac{3000}{20}\\\\Percent\ increase=150\%

There is 150% increase in the number of volunteers.

Keywords: percentage, subtraction

Learn more about percentages at:

  • brainly.com/question/10940255
  • brainly.com/question/10941043

#LearnwithBrainly

3 0
4 years ago
NEED HELP!; At Sunset Grove High School, 13% of students walk to school and 28% ride the bus. If the rest drive to school, what
ira [324]

Answer:

59% would be the answer.

Step-by-step explanation:

I believe this is correct, if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.

6 0
3 years ago
Angles $A$ and $B$ are supplementary. If the measure of angle $A$ is $8$ times angle $B$, what is the measure of angle A?
Whitepunk [10]

Answer:

A= 160

Step-by-step explanation:

anlge A is 8 times angle B so angle A is 8B

The sum of supplementary angles is 180

B+ 8B = 180

9B = 180

B= 20

AngleB=20

Angle A  = 8*20 =160

5 0
4 years ago
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