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3 years ago

What are the zeros of f(x)=x^2+x-20?

1 answer:

3 0

F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)

f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4

Answer: C. x = -5 and x = 4.

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Add the two expressions 6q+1 and q+11 Enter your answer into the box

In-s [12.5K]

Answer:

7q + 12

Step-by-step explanation:

6q + 1 + q + 11

add like terms. add 6q and q together and then add 1 and 11 together

6q + q + 1 + 11

7q + 12

7q + 12 is your answer. i hope this helps :)

7 0

3 years ago

Read 2 more answers

How to find the surface area of the open net

Kruka [31]

To find the surface area of the open net, you’ll have to find the area of the faces
So, since there are 6 boxes you’ll have to find the area of the faces and add it up to find the surface area
10x4=40x4=160
3x4=12x2=24
160+24=184

Hope this helps ;)

5 0

3 years ago

295 + 39x = 350 - 33x solve for x and show work

Katarina [22]

Answer:

$x=\frac{55}{72}$

Step-by-step explanation:

$295+39x=350-33x$

Subtract 295 from both sides:

$39x=-33x+55$

Add 33x to both sides:

$72x=55$

Divide both sides by 72:

$x=\frac{55}{72}$

7 0

3 years ago

Read 2 more answers

What is the sum of the prime factors of 2014

goblinko [34]

The sum of prime factors of 2014 is 74

<h3>Solution:</h3>

Given that to find sum of prime factors of 2014

Let us first find the prime factors of 2014

A prime number is a whole number greater than 1 whose only factors are 1 and itself

"Prime Factorization" is finding which prime numbers multiply together to make the original number.

Prime factors of 2014:

The Prime Factorization is:

$2014 = 2 \times 19 \times 53$

Thus the prime factors of 2014 are 2, 19, 53

Let us now find the sum of prime factors of 2014

sum of prime factors of 2014 = 2 + 19 + 53 = 74

Thus the sum of prime factors of 2014 is 74

7 0

3 years ago

3x +2y=10 4x-y=6 using substitutional method

Anna11 [10]

Answer:

( 2 , 2 )

Step-by-step explanation:

Solve the eqaution :

3x +2y=10

4x-y=6

Solve the eqaution for y :

3x + 2y = 10

y = -6 + 4x

Substitute for y : 3x + 2 ( -6 + 4x ) = 10

x = 10

Substitute for the value of x : x = 2

Substitute the given value of x into the eqaution

y = -6 + 4x : y = -6 + 4 × 2

Solve the eqaution: y = -6 + 4 × 2

solve the eqaution for y : y = 2

y = 2 A possible solution : the ordered solution pair is

( 2 , 2 )

8 0

3 years ago