All categories

3 years ago

What is the value of x ?

Mathematics

1 answer:

Ivan3 years ago

8 0

Answer:

x = 3

Step-by-step explanation:

Given two secants drawn from an external point to the circle, then

The product of the external part and the whole of one secant is equal to the product of the external part and the whole of the other secant, that is

x(x + 21) = (x + 1)(x + 1 + 14)

x² + 21x = (x + 1)(x + 15) ← expand using FOIL

x² + 21x = x² + 16x + 15 ( subtract x² + 16x from both sides )

5x = 15 ( divide both sides by 5 )

x = 3

You might be interested in

Help pls it’s due soon hurry will mark as brainliest if correct

Archy [21]

Answer: 3,885.71428571428571 I’m not sure

Step-by-step explanation:

4 0

3 years ago

Simplify. (-7y^2+4y+9)+(6y^2-5y+9)-(2y^2-9y-2)

Natali5045456 [20]

Combine like terms

-7y² + 6y² - 2y² = -3y²

4y + (-5y) - (-9y) = 4y - 5y + 9y = 8y

9 + 9 - (-2) = 9 + 9 + 2 = 20

-3y² + 8y + 20 is your answer

hope this helps

7 0

3 years ago

PLEASE HELP ME WITH THIS QUESTION. please and thank you.

sashaice [31]

3(a+b) and 3a+b: not equivalent

4(x+2y) and 8y+4x: equivalent

7 0

3 years ago

Read 2 more answers

Aaaaaa help I’m stuck at F I really need to do this so I could get a D please with explanation

Fed [463]

Answer:

$1.51

Step-by-step explanation:

1.25 lb. of dried fruit : $\frac{\$1.84}{lb.}*\frac{1.25\ lb.}{1}=\$2.30$

0.5 lb. of cereal : $\frac{\$2.38}{lb.}*\frac{0.5\ lb.}{1}= \$1.19$

Cost = $2.30 + $1.19 = 3.49

Money = $5

$5 - $3.49 = $1.51 in change

5 0

3 years ago

How do you convert decimals into fractions?

Effectus [21]

Just put it over 100
Example 0.45 = 45/100

5 0

3 years ago