2 years ago

Find the sum of the first 15 numbers in a sequence that has a1 = 6 and d=4

Mathematics

2 answers:

Olin [163]2 years ago

8 0

Your answer is going to be C-158

lakkis [162]2 years ago

6 0

Answer:

the correct answer is D. 510

Step-by-step explanation:

158 IS WRONG!

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Find the value of x. No calculator needed. Leave the square root as a part of your answer.

aleksklad [387]

Answer:

5/V2=2.5×V2

Step-by-step explanation:

This is an isoscelle right triangle:

x²+x²=5²

2x²=5²

x=5/V2=5×V2/2=2.5×V2

where V2=sqrt(2)

4 0

2 years ago

You and your mom enter a drawing with 3 different prizes. A total of 9 people entered the drawing, and prizes are awarded random

julsineya [31]

Answer:

$\frac{1}{72}$

Step-by-step explanation:

We have been given that there are total 9 people who entered the drawing competition. There are 3 prizes to be distributed to the winners. The total number of ways that 3 prizes can be awarded to the 9 people can be determined as 9*8*7 = 504.

The total number of ways in which I win the first prize and my mom wins the second prize would be 1*1*7 = 7.

Therefore, the probability that I win the first prize and my mom wins the second prize would be: $\frac{7}{504}=\frac{1}{72}$

5 0

2 years ago

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Frank wants to buy three items costing $111.32, $28.75, and $73.21. If he earns $8.75 an hour, how many hours must Frank work be

Sedaia [141]

The three items cost altogether is : 111.32 + 28.75 + 73.21 = 213.28

So, he must work 213.28 : 8.75 = 24.3748571429...

Since if he works 24 hours, he wouldn't have enough money to buy the 3 items, so he must work 24 + 1 = 25 hours.

Recheck : 25 x 8.75 = 218.75 ( > 213.28)

4 0

1 year ago

4 / 500 in scientific notation would be?

Lubov Fominskaja [6]

4/500=0.008

scientific notation form = 8 x 10^9

3 0

3 years ago

Write and solve the equation. Show all work.

GarryVolchara [31]

X/2-20=22
440 is your answer

6 0

2 years ago

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