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oksano4ka [1.4K]
2 years ago
13

Please help me with this question.​

Mathematics
1 answer:
Stels [109]2 years ago
7 0

Step-by-step explanation:

Mean of the origibal set = 20

No. of terms = 10

Sum = Mean x No. of terms

= 20 x 10 = 200

The sum of additional numbers to make the new set of observstion is 4 + 8 + 12...... + 40 = 220

New Sum = 200 + 220 = 420

The no of terms stay the same

New Mean = New Sum/ N

= 420/10

= 42

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melomori [17]
It's B or C I think I'm not to sure
8 0
2 years ago
A person invests 3500 dollars in a bank. The bank pays 5% interest compounded
Mashcka [7]

Answer: 18.9

A=8900

P= 3500

r = 0.05

n = 2 (semi-annually)

T= 18.9

8 0
2 years ago
Jesse ate 100 donuts in five days. Each day 6 more donuts than the day before. How many donuts did she eat each day?
rusak2 [61]

Answer:

She ate 8 donuts the first day, 14 on the second, 20 on the third, 26 on the fourth, and 32 on the fifth day

Step-by-step explanation:

Over the course of 5 days, she ate 100 donuts, each day eating 6 more than the day before.  Let n be the number of donuts she ate on the first day, then she ate...

Day 1: n donuts

Day 2: n + 6 donuts    

Day 3: n + 12 donuts

Day 4: n + 18 donuts

Day 5: n + 24 donuts

Add the days together and get the equation...

n + (n + 6) + (n + 12) + (n + 18) + (n + 24) = 100

Now combine like terms and solve for n...

5n + 60 = 100

    5n = 40

    n = 8

She ate 8 donuts the first day, 14 on the second, 20 on the third, 26 on the fourth, and 32 on the fifth day

6 0
3 years ago
Malina can spend no more than $50 on groceries every week. Which graph shows how much she can spend?
Semmy [17]
I’d say: Option (B).
—The colored-in dots mean equal to. In this case since $50 is the max(limit) then Malina can spend less or exactly equal to $50 each week.
4 0
3 years ago
An isosceles triangle is a triangle in which two sides are equal in length. the angle between the two equal sides is called the
Murrr4er [49]
It's 180-40 divide 2 which equals = 70

I hope it helped you!!!
4 0
3 years ago
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