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Soloha48 [4]
2 years ago
13

Sara lost 12 pounds over the summer by jogging each week. By winter time she had gained 4 3/8 pounds. Represent this situation w

ith an expression involving signed numbers. What is the overall change in Sara’s weight?.
Mathematics
1 answer:
Vika [28.1K]2 years ago
3 0

The situation with an expression involving signed numbers is w - 12 + 4 3/8 and the overall change in Sara’s weight is -7 5/8 pounds

<h3>Represent this situation with an expression involving signed numbers. </h3>

Let Sara's initial weight be w.

The given parameters are:

Lost = 12 pounds

Gain = 4 3/8 pounds

The situation with an expression involving signed numbers is represented as:

Weight = Initial - Lost + Gain

So, we have:

Weight = w - 12 + 4 3/8

<h3>What is the overall change in Sara’s weight?.</h3>

In (a), we have:

Weight = w - 12 + 4 3/8

The overall change is:

Change = - 12 + 4 3/8

Evaluate

Change = -7 5/8

Hence, the overall change in Sara’s weight is -7 5/8 pounds

Read more about sum and difference at:

brainly.com/question/17695139

#SPJ1

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8 percent * 50 =

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400:100 = 4

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Answer:

1,572,864

Step-by-step explanation:

1. 6 x 4 = 24

2. 24 x 4 = 96

3. 96 x 4 = 384

4. 384 x 4 = 1,536

5. 1,536 x 4 = 6,144

6. 6,144 x 4 = 24,576

7. 24,576 x 4 = 98,304

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4 years ago
CAN SOMEONE PLEASE HELP WILL GIVE BRAINLIEST
spin [16.1K]

Answer:

c = 7

d = 5

Step-by-step explanation:

Notice that in the first expression, x^c is inside a square root, and only perfect squares can be extracted from it. On the simplified form shown on the right hand side, we have x^3 outside the root and a single "x" left inside. In order for such to happen (x^3 get outside the root) there must have been an x^6 inside the square root. This together with the sole "x" that was left in the root, totals seven factors of x that should have been originally inside the square root:

x^6 * x = x^7  therefore c was a "7"

In the second expression we have a CUBIC root, so only perfect cubes can get extracted from it. Since there is one factor "x" shown in the simplified form (right hand side of the equal sign), that means that it must have been an x^3 (perfect cube) apart from the x^2 that was left inside the root. This makes the original power of x to be a 3 + 2 = 5.

Therefore d = 5

4 0
3 years ago
A company that accepts credit cards is charged $0.02 a transaction in
hjlf

this is money, it would <u>technically</u> be $574.20.

But we have to remember that, for your question, you also have a $0.02 Ah, precentages. <em>Gotta love 'em.</em>

<em />

Remember that when you want to find how much to take away from something (When you know the percentage that you need to take off), you have to move the decimal two spots to the left, meaning that 21% becomes .21, 4% becomes 0.04, and 112% becomes 1.12. A good way to remember this is by looking at the two dots on the percentage sign, and relating the two dots to the two spots you need to move the decimal by.

Knowing this we can now move on.

To find out how much to take away from something (E.G: 10% of 50 or 54% of 4300), we first need to move the decimal from our percentage. Once we've done that, we're almost ready. Now, we need to multiply <em>w</em> by <em>x</em> to get <em>y</em> and eventually get <em>z</em> (Where <em>w</em> is the number we need to take away from, <em>x</em> is the percentage after we had moved the decimal, and <em>y</em> is the number we need to subtract from <em>w</em> to get <em>z</em>, which is our number after the precentage has been taken out of it.

So,

<em>w</em> * <em>x</em> = <em>y</em> then <em>w</em> - <em>y</em> = <em>z</em>

580 * 0.01 = 5.8 then 580 - 5.8 = 574.2

But since this is money, remember that this can also be expressed as $574.20

<h2><u><em>BUT WAIT!!!!</em></u></h2><h3>We can't stop here, because we are trying to figure out how much gets added onto <u>the transaction</u>, <u><em>not</em></u> how much the transaction would be taxed <u>if</u> they were removed <em>y</em>.</h3>

Meaning, that the answer is actually 585.82, because 580 * 0.01 = 5.8 then 5.8 + 0.02 = 5.82 then  580 + 5.82 = 585.82 ($0.02 being the charge applied to every transaction.)

So, the answer should be $585.82

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Answer: 33 math problems.

Step-by-step explanation:

Let x = Number of math problems

y= Number of history problems

According to the question , we have

3y+6=x\ \ \ \ \ (i)\\\\ x+y=42\ \ \ \ (ii)

We can rewrite (i) as x-3y=6    (iii)

Now, subtract (iii) from (ii), we get

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Put this in (i), we get

x=3(9)+6 = 27+6=33

Hence, you have to complete 33 math problems.

8 0
3 years ago
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