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olasank [31]
3 years ago
6

What is the coefficient in the expression 10x^-7?

Mathematics
1 answer:
Lyrx [107]3 years ago
8 0
The coefficient of x is 10.

So the answer is B.10
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Brad sold candy bars and cookies for a fundraiser at school. Candy bars sold for $3, and cookies sold for $5. He sold a total of
kari74 [83]

Answer: First option

12 candy bars were sold

Step-by-step explanation:

Call x the amount of candy sold and call z the amount of cookies sold. Then we know that

x + z = 20

We also know that candy bars sell for $ 3 and cookies sell for $ 5. The profit was $ 76

So:

3x + 5z = 76

To find the quantity of candy bars sold we must solve the system of equations:

x + z = 20\\\\3x + 5z = 76

Multiply the first equation by -5 and add it to the second equation

-5x -5z = -100

               +

3x + 5z = 76

--------------------------------

-2x = -24\\\\x = 12

8 0
3 years ago
Read 2 more answers
A tree's root is 13 feet below ground and spans a radius of 8 feet. If the tree's elevation above ground is 28 feet with branche
GarryVolchara [31]
The total length of the tree will be given by:
Total=(elevation above the ground)+(length of the root)
elevation=28 ft
length of the root=13
thus the length of the tree will be:
28+13
=41 ft
8 0
3 years ago
Read 2 more answers
The length of a rectangle is 4 more than its width. The area of the rectangle is 21m2 . What is the measure of the width?
nadezda [96]
The width is 3m because 3*7 is 21m^2. Also they said the length is 4 more than the width (3+4=7)
7 0
3 years ago
What is the probability of rolling a number greater than 3 on a single die (dice)?
SpyIntel [72]
The probability would be 1/2
8 0
4 years ago
Choose the equation that represents the line that passes through the point (6,-3,) and has a slope of 1/2
dezoksy [38]

Answer:

y=\frac{1}{2}x-6

Step-by-step explanation:

The general equation of a line: y = ax+b

In our case <em>a</em> is given

a=\frac{1}{2}

Now we plug in for <em>a</em> and we get:

y=\frac{1}{2}*x+b

Now we plug in our coordinates into this equation and we solve for <em>b</em>

-3=\frac{1}{2}*6+b\\b = -6

So the equation of the line is y=\frac{1}{2}x-6

6 0
4 years ago
Read 2 more answers
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