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Art [367]
4 years ago
13

louisa used a gift card to pay for 3 meals at a vegetarian restauant each meal cost $6 by how much has the value of the gift car

d changed
Mathematics
1 answer:
Naya [18.7K]4 years ago
8 0
-18. The value has gone down $18 on the gift card.
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Can anyone help me to understand how u add,subtract,multiply and divide fractions like explain how u do it using an example:) Pl
kotykmax [81]
Adding fractions:
Lets say you have two fractions like 1/2 and 1/3. To add them, you have to make the denominator the same. So we find the least common multiple of 2 and 3, which is 6, so we multiple 1/2 by 3/3 so we have 3/6 without changing the value, and we multiple 1/3  by 2/2 to have 2/6. Then we add the numerators and have 5/6.

Subtraction fractions:
Same thing as adding, just subtracting instead.
Both need to make sure you have the same denominator.

Multiplying fractions:
This is the most simple. All you do is multiply the numerators and the denominators. So if you have 5/6 and 3/4, you multiply the numerators to have 15, the denominators to have 24, and so you have 15/24, simplified to 5/8.

Dividing fractions:
If you have 5/6 divided by 3/4, you flip the 3/4 to 4/3, and you multiply that with 5/6.
4 0
3 years ago
Read 2 more answers
NEED HELP ASAP PLEASE! BRAINLIEST TO RIGHT ANSWER! For two similar triangles ABC and DEF, the scale factor of ∆ABC to ∆DEF is 2
hram777 [196]

Answer:

Assuming the similarity is that BC scales to EF, answer is

D. 1.5BC

Step-by-step explanation:

Because the triangles are smilar, AB/BC = DE/EF

If AB = 2BC

then DE = 2EF

but also DE = 3BC

so 2EF = 3BC

EF = 1.5BC

5 0
3 years ago
PLEASE HELP I'LL GIVE BRAINLIEST!!!!!!!!! According to the Census Bureau, in 2014 California had an estimated population of 3.88
lutik1710 [3]

Answer:

The population of California is 3.3216 * 10^{7} more than the population of Wyoming.

Alternatively, the population of California is 6.64 * 10^{1} times the population of Wyoming.

Step-by-step explanation:

The first part is to take the numbers out of the scientific notation. The estimated population of California is 38,800,000, and the population of Wyoming is 584,000.

Not that we've done that, let's start with the first part of the problem.

"The population of California is __________ more than the population of Wyoming."

This is a statement of subtraction, because it's not asking how many TIMES more. So, we subtract Wyoming's population from California's population.

38,800,000 - 584,000 = 38,216,000.

Putting that number into scientific notation is easy: move the decimal to the place in the number where there will only be one number in front of the decimal: 3.3216. How many number slots until you have only one number in front of the decimal? 7. So, we know that the power of 10 is going to be 7. So, the first part of the question answers to:

3.8216 * 10^{7} .

Now for the second part.

"Alternatively, the population of California is _________ times the population of Wyoming."

This is a problem of division. The question is asking us to divide California's population by Wyoming's population.

\frac{38,800,000}{584,000} = 0.664383562 * 10^{2} .

We need to have one number in front of the decimal point, so we move it behind the first 6, giving us 6.64. Because we did this, we need to bump the exponent from 2 to 1, leaving us with:

6.64 * 10^{1}.

So, the answer to the question is:

1. 3.8216 * 10^{7}.

2. 6.64 * 10^{1}.

Hope this helped you, and I hope you get a perfect score!! :)

5 0
3 years ago
The students at Central Elementary School are planning a dinner for their parents.
blsea [12.9K]
They will need 20 pans
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3 years ago
Cheryl can travel 21.6 miles on one gallon of gas how far can cheryl travel on 6.2 gallons of gas
Lyrx [107]
Cheryl can travel 133.92 miles using 6.2 gallons of gas
8 0
4 years ago
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