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Svetradugi [14.3K]
3 years ago
6

Jonah has collected 91 coins worth $7.20 in his piggy bank. his collection includes only dimes and nickels. how many dimes are t

here in jonah's piggy bank?
Mathematics
1 answer:
deff fn [24]3 years ago
5 0
<span>There are 53 dimes in Jonahs piggy bank. You must use algebra to solve for a variable X as follows: x.10+(91-X).05=7.2 Solving through will yield X =53 which means 91 - 53 = 38. 53*.10 + 38*.05 = $7.20. Other methods will also work, but this is the most straight forward.</span>
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Find x - 3y if x = 3 and y= -2
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X-3y, x=3, y=-2
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4 0
3 years ago
A random sample of 500 reports an average yearly income of $42,000 with a standard deviation of $1000. An estimate of the parame
Lorico [155]

Answer:

E

Step-by-step explanation:

Confidence Interval = mean + or - error margin

Mean = 42,000, error margin = width of estimate of the parameter ÷ 2 = 175 ÷ 2 = 87.50

We can be 95% confident that the population mean is 42,000 plus or minus 87.50

8 0
3 years ago
I will give brainiest to whoever answers correctly !! There are two parts to this question A and B
laila [671]

Answer:

Step-by-step explanation:

5 1/2%=0.024

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due date is after 6 months so

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4 0
3 years ago
What is 0.612 (12 repeating) simplified to a fraction?
Nata [24]

Answer:

the idea behind the recurring decimal as a fraction, is to first off, multiply or divide by some power of 10, in order that we leave the recurring decimal to the right of the decimal point.

then we multiply by a power of 10, in order to move the repeating digits to the left of the decimal point, anyhow, let's proceed.

notice, we first divided by 10, to move the decimal point over to the right by 1 slot, then we multiplied by 100, to move it two digits over the decimal point, namely the repeating "12", thus we use 100. i think

Step-by-step explanation:

8 0
3 years ago
9/20 divided by 4/15
polet [3.4K]
36/3000 ? maybe 1/5 ....................................
8 0
3 years ago
Read 2 more answers
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