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Strike441 [17]
3 years ago
11

Which of these is a two-step equation? A.X+ 9 = 21 B.x= 11+2 C.2x + 9 = 21 D.x/3 = 9

Mathematics
2 answers:
MissTica3 years ago
7 0
Answer: C

Explanation:
x+9=21
x=12

x=11+2
x=13

2x+9=21
2x=12
x=6

x/3=9
x=27
inysia [295]3 years ago
4 0
The answer would be C
2x + 9 = 21
1. 2x = 12
2. x = 6
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The base of a rectangle prism is 20 cm. If the height of the prism is 5 cm what is it volume
goldenfox [79]

Answer:

Answer : 100^3

Step-by-step explanation:

formula to find volume of prism =

v = base area * height

v = 20 * 5

v = 100

so , volume is 100^3

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3 years ago
It took 5 people to clean a classroom in 4 hours. How long would it take 4 people? Please help
SpyIntel [72]

Answer:

3 hours, duh

Step-by-step explanation:

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The length of a rectangle is 10 dm more than its width and its perimeter is 80 dm. find its dimensions.​
cluponka [151]

Answer:

the width is 15 and length  is 25

Step-by-step explanation:

4 0
3 years ago
The quotient of a number t and 4.2 is at most 15.​
frosja888 [35]

Answer:

t \leq 63

Step-by-step explanation:

Quotient of two numbers also means the result of the two numbers after division.

If the quotient of a number t and 4.2 is at most 15., this can be expressed using the inequality;

\dfrac{t}{4.2}\leq  15 <em>(note that at most 15 means that the highest value we can have is 15 after taking the quotient of the number hence the reason of the inequality sign.)</em>

<em></em>

On solving the inequality for the variable t

\dfrac{t}{4.2}\leq  15\\\\multiply \ both \ sides \ by \ 4.2\\\\\dfrac{t}{4.2}* 4.2\leq  15 * 4.2\\\\t \leq 63

<em>Hence t is at most 63</em>

6 0
3 years ago
This probability distribution shows the typical distribution of pitches thrown to a batter in a given at bat in a baseball game.
Vikki [24]

Answer:

0.35

Step-by-step explanation:

This probability distribution is shown below:

Pitch                   1            2        3          4         5

Frequency         15         20      40        15        10

Probability         0.15     0.2      0.4      0.15      0.1

The probability that the pitcher will throw fewer than 3 pitches to a batter = P(X < 3)

X  is the number of pitches thrown. Therefore:

P(X < 3) = P(X = 1) or P(X = 2)

The additive rule pf probability states that if two events X and Y are dependent events, the probability of X or Y occurring is the sum of their individual probability.

P(X < 3) = P(X = 1) or P(X = 2) = P(X = 1) + P(X = 2) = 0.15 + 0.2 = 0.35

The probability that the pitcher will throw fewer than 3 pitches to a batter = 0.35

8 0
3 years ago
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