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mote1985 [20]
2 years ago
10

3) Your piggy bank has only nickels and dimes. There 21 coins totaling

Mathematics
1 answer:
zysi [14]2 years ago
5 0
There are 14 nickels and 7 dimes.
(You can check by multiplying 14 by 5 for nickels and 7 times 10 for dimes. This would add up to 1.35)

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Simplify the expression
Crank

Answer:

First awnser

Step-by-step explanation:

4x(7-v2)+v7(7-v2)

28-4v2+7v7-v14

6 0
3 years ago
V is the midpoint of GH⎯⎯⎯⎯⎯⎯. G has coordinates (5,−3), and V has coordinates (−1,3). Identify the coordinates of H.
vodka [1.7K]

Answer:

Answers:

(3, 3)

(−7, 9)

(−6, 6)

5 0
3 years ago
Read 2 more answers
The lengths of text messages are normally distributed with a population standard deviation of 3 characters and an unknown popula
slava [35]

Answer:

25.4, 28.6

Step-by-step explanation:

Given parameters

sample size, n = 24

sample mean, X = 27

population standard deviation, s = 3

critical value, Zα/2, where α = 0.01

99% confidence Interval, CI, is given as follows

CI = X ± Zα/2 × (s/√n)

Zα/2 = Z0.01/2 = Z0.005 = 2.576

CI = 27 ± 2.576 × (3/√24)

   = (25.42 ,28.57)

5 0
3 years ago
Brenda is making a dessert that takes 3.5 hours to prepare. If she wants to be finished by 1:15, at what time should she start??
dusya [7]
3.5 hours is 3 hours and 30 minutes.
1:15 is 1 hour and 15 minutes. 

The question is asking at what time does she want to start and end up at 1 hour and 15 minutes? SO you add the time it takes for her to make the dessert with the time at which she ends.

TLTR?? 4:45
5 0
3 years ago
A principal of $2000 is placed in a savings account at 3% per annum compounded annually. How much is in the account after one ye
natita [175]

Answer:

Step-by-step explanation:

After one year

A=p(1+r/n)^nt

=2000(1+0.03/12)^12*1

=2000(1+0.0025)^12

=2000(1.0025)^12

=2000(1.0304)

=$2060.8

After two-years

A=p(1+r/n)^nt

=2060.8(1+0.03/12)^12*2

=2060.8(1+0.0025)^24

=2060.8(1.0025)^24

=2060.8(1.0618)

=$2188.157

After three years

A=p(1+r/n)^nt

=2188.157(1+0.03/12)^12*3

=2188.157(1+0.0025)^36

=2188.157(1.0025)^36

=2188.157(1.0941)

=$2394.063

8 0
4 years ago
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