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Verdich [7]
2 years ago
7

Elena walked 12 miles. Then she walked 0.25 that distance. How far did she walk altogether? Select all that apply.

Mathematics
2 answers:
mafiozo [28]2 years ago
7 0
15 miles

12 x 0.25 =3
12+3=15
Stels [109]2 years ago
4 0

Answer:

I got 15! But I am not sure that I can explain it!!

Step-by-step explanation:

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How much is 12,986.64 Swiss francs in US dollars?
Hunter-Best [27]

Answer:

14 189,40 United States Dollar

8 0
3 years ago
How to you write 1/25 using exponents
Montano1993 [528]

Answer:

5^{-2}

Step-by-step explanation:

Using the rule of exponents

a^{-m} ⇔ \frac{1}{a^{m} } , then

\frac{1}{25} = \frac{1}{5^{2} } = 5^{-2}

5 0
3 years ago
Read 2 more answers
Emily's piggy bank contains twice as many dimes as nickels. It contains two more quarters than nickels. Emily calculates that if
ANTONII [103]

Answer:

Emily has 10 nickels, 20 dimes and 12 quarters in her piggy bank

Step-by-step explanation:

The number of dimes in Emily's piggy bank = 2 × The number of nickels

The number of quarters in it = 2 + The number of nickels

Whereby;

The number of quarters = The number nickels

The number of dimes = The number of quarters

The number of nickels = The number of dimes

The total amount = Current amount - $150

Let 'x' represent the number of dimes, let 'y' represent the number nickels, and let 'z' represent the number quarters in Emily's piggy bank, we have;

x = 2 × y

z = 2 + y

The total amount in the piggy bank is therefore;

Total = C = x×0.1  + y×0.05 + z×0.25 = 2·y×0.1 + y × 0.05 + (2 + y) × 0.25 = 0.5·y + 0.5

C = 0.5·y + 0.5

With the second condition, we have;

z = y

x = z

y = x

We get

x × 0.1 + y × 0.05 + z × 0.25 = y ×0.1 + y×0.05 + y×0.25 = 0.4·y = C - 1.5

∴ C = 0.4·y + 1.5

Which gives;

0.5·y + 0.5 = 0.4·y + 1.5

0.1·y = 1.5 - 0.5 = 1

y = 1/0.1 = 10

y = 10

Therefore;

x = 2×y = 2 × 10 = 20

z = 2 + y = 2 + 10 = 12

Therefore;

The number number of nickels in her piggy bank, y = 10

The number of dimes in her piggy bank, x = 20

The number of quarters in her piggy bank, z = 12

3 0
2 years ago
Read 2 more answers
Nash ran how many miles in 5 weeks
liberstina [14]

Answer:

Is there more information?

Step-by-step explanation:

4 0
2 years ago
Given f(x)=-3x+3solve for x when f(x)=6​
natali 33 [55]

Answer:

x = -1

Step-by-step explanation:

Given: f(x) =  - 3x  + 3

Solve for x, When: f(x) = 6

Step by step:

- 3x + 3 = 6

- 3x = 6 - 3

- 3x = 3

x = 3 \div  - 3

\boxed{\green{x =  - 1}}

3 0
2 years ago
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