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3 years ago

I need help with -1 + (-4) + (-9) PLEASE DO THE STEP BY STEP EXPLANATION

2 answers:

8 0

Answer: -14
Remove parenthesis to -1-4+(-9)
When there is a “+” in front of an expression in parenthesis, the expression remains the same, so;
-1-4-9 calculate the sum of the negative numbers
-1-4= -5, -5-9= -14

Lera25 [3.4K]3 years ago

5 0

Answer:

yes

Step-by-step explanation:

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10) -15xy + 25x ????????????????????

Ierofanga [76]

Factor (−15x)(y)+25x

−15xy+25x

=5x(−3y+5)

Answer:

5x(−3y+5)

6 0

3 years ago

Lani opened a savings account with $450. She saves $225 per month. Which equation shows how much money Lani has in her account a

timurjin [86]

Hi.

The answer to your question is:

C. y = 450 + 225m

8 0

3 years ago

What is the slope of the line that connects the points (0,7) and (4,15)

vladimir2022 [97]

Answer:

$m=2$

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS

Alg I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (0, 7)

Point (4, 15)

Step 2: Find slope m

Substitute: $m=\frac{15-7}{4-0}$
Subtract: $m=\frac{8}{4}$
Divide: $m=2$

3 0

2 years ago

Find the value of the discriminant of each quadratic equation: -2x^2-x-1=0

Blizzard [7]

$\Delta=b^2-4ac\\
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4 0

3 years ago

Shana and Marie will update parts of their computer system. They will update the motherboard for $259.99, 2 USB

Furkat [3]

Answer:

12.5w = 419.38

and

15.5w = 419.38

Step-by-step explanation:

find the total cost of all the computer parts.

= 259.99 + 2* 39.95 + 79.49 = $419.38

Shana will save $12.50 per week and Marie will save $15.50

per week

therefore we can create two inequalities

<h2> Shana:</h2>

12.50 * w = 419.38

12.5w = 419.38

w = 419.38/12.5

w = 33.5504

<h2>Marie</h2>

15.50*w = 419.38

15.5w = 419.38

w = 419.38/15.5

w =27.0568

8 0

3 years ago