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pentagon [3]
2 years ago
14

Item 15

Mathematics
1 answer:
Shtirlitz [24]2 years ago
8 0

Answer:

28

Step-by-step explanation:

4*7= 28

when there is a variable (letter next to the number) next to the number like 4a it means 4 multiplied by a. since a is 7, 4 multiplied by 7 is 28.

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What's the answer to this math problem
GarryVolchara [31]
Total number of marbles:
75 + 50 + 100 + 25 = 250

Probability of selecting a red marble:
25/250 (since 25 out of 250 marbles are red)
Since the top and bottom of this fraction are both divisible by 25, we can go ahead and divide them both by 25, simplifying to 1/10.

Probability of selecting a green marble:
50/250
Simplifies to 2/10
Simplifies to 1/5.

Probability of selecting a blue or orange marble
(75+100)/250
175/250
Simplifies to 7/10.

To find the probability that each event occurs in order, simply multiply them all together.

\frac{1}{10}\times\frac{1}{5}\times\frac{7}{10}=\frac{1\times1\times7}{10\times5\times10}=\boxed{\frac{7}{500}}
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3 years ago
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Margaret [11]

Answer:

1,120

Step-by-step explanation:

180/12=15

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2 years ago
What is the scientific notation of 68000
Dmitry [639]
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ikadub [295]

Answer:

Step-by-step explanation:

f(x) = |2x−1|+3, reflected over the y-axis becomes

g(x) = |-2x−1|+3

We needed the point (0.5, 3) to go to the other side of the y-axis to get the point (-0.5, 3).

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