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Nady [450]
3 years ago
10

Please please help. Marking Brilliant for the correct answer

Mathematics
1 answer:
NISA [10]3 years ago
5 0

Answer:

x = 19

Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

(x-7+4) * 4 = 8^2

(x-3)*4 = 64

Divide each side by 4

x-3 =16

Add 3 to each side

x-3+3 = 16+3

x = 19

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A banner has a length of 10 feet and an area of 7 square feet. What is the width of the banner?
const2013 [10]

Answer:

the width is 0.7 feet

Step-by-step explanation:

Well we know that area = length * width. We know both the area and length, but not the width. Let's substitute the area and length in this equation, and substitute x for the width.

 

7 = 10 * x, or 7 = 10x

 

Now, solve for the width, or x, by dividing both sides by 10.

 

7(/10) = 10x(/10)

 

7/10 = x

 

Simplify 7/10 = 0.7

So the width of the banner is is 0.7 ft!

6 0
4 years ago
Simplify each expression
Citrus2011 [14]

Answer:

5x^4 + 15x^3 - 4x^2 + 7

Step-by-step explanation:

(7x^3 + 5x^4 + 3x^2) - (7x^2 - 7 -8x^3)

what we need to do is distribute the - sign in the middle of the parentheses into (7x^2 - 7 -8x^3)[/tex], this is very important to ensure we have the correct answer. by distributing we get the following equation:

7x^3 + 5x^4 + 3x^2 - 7x^2 + 7 + 8x^3

now we combine like terms to get our answer

5x^4 stays as it is, since there is nothing to combine it with

7x³ + 8x³ = 15x³

3x² - 7x² = -4x²

7 stays the same because like 5x^4, there is nothing else to combine it with

we have the following new equation:

5x^4 + 15x^3 - 4x^2 + 7

5 0
3 years ago
George and Lea each toss a tetrahedral die with faces numbered 1 through 4, and then multiply the two resulting numbers. If the
Anna007 [38]

Answer:

I think the total number of combinations of 3 from 6 = 6C3 = 20

All possible combinations of 3 which have a product divisible by 3 must contain either a 3 or a 6.

So the number not divisible must be 3 combinations from the number 1, 2, 4, and 5.= which is 4

So the required probability is 20-4 ? 20 = 16/20 = 0.8 Answer

Hope this help you! :)

6 0
3 years ago
To solve the equation x - 4 = 12,
yulyashka [42]

Answer:

X = 16

Step-by-step explanation:

<h3>Yes, to solve this equation </h3><h3>Add both side by 4 </h3>
6 0
3 years ago
Find the equation of the line with slope m = 5/3 that contains the point (-6, -12)
Mice21 [21]

Answer:

3y-(-12) = 5(x-(-6)

3y+12= 5(x+6)

3y +12 = 5x + 30

3y = 5x +30 - 12

3y = 5x + 18

y = 5x + 6

4 0
3 years ago
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