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2 years ago

Which are factors of x2 – 4x – 5? Select two options. (x – 5) (x – 4) (x – 2) (x 1) (x 5).

Mathematics

2 answers:

Greeley [361]2 years ago

5 0

Answer:

(x - 5) (x + 1)

Step-by-step explanation:

x² - 4x - 5

= x² + x - 5x - 5

= x(x + 1) - 5(x + 1)

= (x - 5) (x + 1)

scoray [572]2 years ago

4 0

Answer:

x2-4x-5=-5

x=-5

Step-by-step explanation:

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Jacob invested $300 in a savings account and earned $81 in simple interest at the end of 9 years. what was the interest rate

Brilliant_brown [7]

Answer:

Step-by-step explanation:

We use the simple interest equation of A=P(1+rt).

A-the total amount with interest earned

P-the initial amount or principal

r-rate

t-time in years

We substitute the values P=300, A=381, and t=9. We then solve for r.

$381=300(1+9r)$

We divide both sides by 300.

$\frac{381}{300}=\frac{300(1+9r)}{300}$

Simplify.

$1.27=1+9r$

We subtract 1 from both sides.

$1.27-1=1-1+9r$

Simplify.

$0.27=9r$

We divide by 9.

$\frac{0.27}{9}=\frac{9r}{9}$

r=0.03

We need to convert the decimal to a percentage by multiplying by 100.

The interest rate is 3%.

7 0

3 years ago

What’s 6.71 in scientific notation

vladimir1956 [14]

The scientific notation for numbers between
1 and 10 is the same as regular notation.

Answer
6.71 • 0

5 0

3 years ago

Read 2 more answers

Simplify the expression by combining like terms<br> 3x+4y+y-2x+11+8x

Firdavs [7]

Answer:

9x + 5y + 11

Step-by-step explanation:

3x + 4y + y - 2x + 11 + 8x

Group like terms

(3x - 2x + 8x) + (4y + y) + 11

Combine like terms

9x + 5y + 11

8 0

3 years ago

for a two week period, john and amanda had the following transactions occur to their cheking account: a deposit of $1,644.50;che

QveST [7]

a deposit of $1,644.50;checks written for $190, $45, and $7.50; and debit card transactions for $30, $5.59, $7.20, and $21.30.

amount deposited = 1644.50

debit card transactions for $30, $5.59, $7.20, and $21.30.

We add all the debit card transactions

30 + 5.59 + 7.20 + 21.30 =64.09

checks written for $190, $45, and $7.50

Add all the check written amounts

190 + 45 + 7.50=242.5

To find ending balance , we subtract the debit card transactions and check written from the deposit amount

1644.50 - 64.09 - 242.5 = 1337.91

$1,337.91 is the ending balance for this time frame

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3 years ago

The range for a list of numbers is 7. the smallest value is 4. what is the largest value in the list

Katena32 [7]

Answer:

Step-by-step explanation:

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3 years ago