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vesna_86 [32]
2 years ago
15

Is this correct ? if not what’s the correct answer?

Mathematics
1 answer:
Snezhnost [94]2 years ago
4 0

Answer:

yes

Step-by-step explanation:

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James has pennies nickels and dimes in his bank he is has more than $1.60 and less than $2.00 in the bank there are 5 times as m
Aliun [14]

James has pennies, nickles and dimes in his bank. he has more than $1.60 and less than $2.00 in the bank. there are 5 times as many pennies as dimes. there is an equal number of nickels and dimes. what is the exact amount of money in his bank?

<em><u>Answer:</u></em>

The exact amount of money in his bank is $ 1.8

<em><u>Solution:</u></em>

Let "p" be the number of pennies

Let "d" be the number of dimes

Let "n" be the number of nickels

Given that,

<em><u>There are 5 times as many pennies as dimes</u></em>

Number of pennies = 5 times the number of dimes

p = 5d ----------- eqn 1

<em><u>There is an equal number of nickels and dimes</u></em>

n = d -------- eqn 2

We know that,

value of 1 dime = 0.10 dollar

value of 1 nickel = 0.05 dollar

value of 1 penny = 0.01 dollar

<em><u>The total value of coins is:</u></em>

total value = d(0.10) + n(0.05) + p(0.01)

Substitute eqn 1 and eqn 2

total value = d(0.10) + d(0.05) + 5d(0.01)

total value = 0.2d

Given that he has more than $1.60 and less than $2.00 in the bank

Therefore, 0.2d must be greater than 1.60 and less than 2.00

Try for d = 8

total value = 0.2 x 8 = 1.6

But value must be greater than 1.6

Try for d = 9

total value = 0.2 x 9 = 1.8

Thus 1.8 is greater than 1.60 and less than 2.00

Therefore, the exact amount of money in his bank is $ 1.8

8 0
3 years ago
The frequency table shows the scores from rolling a dice<br><br> work out the mean
umka2103 [35]
You have to add all of your frequency’s together and divide by 6 for the 6 scores. your mean would be 2
6 0
2 years ago
The area of a rectangle is 24 square cm. the length of the rectangle is 8 cm. find the perimeter
telo118 [61]
The perimeter is 22 cm

6 0
3 years ago
Plz I need help on this question
Alina [70]

Answer:

11.33

Step-by-step explanation:

First find the markup

8.80 * 25%

8.8 *.25 = 2.20

The new price is 8.80+2.20 = 11

Now find the tax

11*.03

.33

Add the tax to the new price

11+.33

11.33

3 0
2 years ago
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The arch of a bridge forms the upper half of an ellipse. The arch is 6 meters above the 20-meter-wide river. Write an equation f
aksik [14]

Answer:

\frac{x^2}{36} + \frac{y^2}{100} = 1

Step-by-step explanation:

Required

The equation of the ellipse

This is calculated as:

\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1

Where:

b =6 ---- height

a = 0.5 * 20 =10 --- width

So:

\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1

\frac{x^2}{6^2} + \frac{y^2}{10^2} = 1

\frac{x^2}{36} + \frac{y^2}{100} = 1

3 0
2 years ago
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