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victus00 [196]
3 years ago
15

We use exponents to show what ??

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
5 0

In mathematics, we use exponents to abbreviate the long and tedious stuff. For instance, if we did not have exponents, we would write xxxxxxx instead of x^7.

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Janelle subtracts -4 from a number. The result is 2. What is the number
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It should leave you with a -2.
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3 years ago
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Find the x- and y-intercept of, y = 1/2x - 7
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Y-intercept is (0,-7) x-intercept is (14,0)
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Mai bought a television for $330. The tax rate is 8%.
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3 years ago
If the sum of four consecutive numbers is 854, what is the third one?
lukranit [14]

Answer:

214

Step-by-step explanation:

The set up would be x + (x + 1) + (x + 2) + (x + 3) = 854, naturally as the numbers are consecutive. Solving for x:

x + (x + 1) + (x + 2) + (x + 3) = 854,

x + x + 1 + x + 2 + x + 3 = 854,

4x + 1 + 2 + 3 = 854,

4x + 6 = 854,

4x = 854 - 6 = 848,

x = 848/4 = 212

The third number then should be 212 + 2 = 214

7 0
3 years ago
The length of a rectangle is 5 centimeters less than twice it’s width. The perimeter of the rectangle is 80 cm. What are the dim
algol [13]
<h3><u>The length is equal to 25.</u></h3><h3><u>The width is equal to 15.</u></h3>

l = 2w - 5

2l + 2w = 80

We have a value for l, so we can plug it into the second equation to solve for w.

2(2w - 5) + 2w = 80

Distributive property.

4w - 10 + 2w = 80

Combine like terms.

6w - 10 = 80

Add 10 to both sides.

6w = 90

Divide both sides by 6.

w = 15

Now that we have a value for w, we can plug it into the original equation to solve for l.

l = 2(15) - 5

l = 30 - 5

l = 25


3 0
3 years ago
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