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marta [7]
3 years ago
9

I need help and show work​

Mathematics
1 answer:
Elena L [17]3 years ago
6 0

Answer: 7-(-4)

Step-by-step explanation:

1. = 11

2. = -7

3. = -7

4. = -10

use symbolab look it up and it solves your math problems and shows you the steps so you could copy the steps to show your work have a good rest of your day or night

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Which equation represents the line that passes through points (1 -5) and (3 -17)
Fynjy0 [20]

Answer:

6x-11

Step-by-step explanation:

m=<u>y2-y1</u>

x2-x1

<u>-</u><u>1</u><u>7</u><u>-</u><u>-</u><u>5</u> = <u>-</u><u>1</u><u>2</u>

3-1. -2

The two negatives cancel ❌

m=<u>1</u><u>2</u>

2

Divide by 2

m=6

y=mx+b

-5= 6 (1) + b

-5= 6 + b

Subtract (6) from both sides

b= -11

The equation for the line is 6x -11

7 0
3 years ago
Choose the expression that represents a quadratic expression. 9x − 2 5x2 + 9x − 1 −2x3 + 8x2 − 7x + 1 x4 − 12x3 + 8x2 − 7x + 1
elena-s [515]

Answer:

5 {x}^{2}  + 9x - 1

Step-by-step explanation:

A quadratic expresion is of the form

a {x}^{2}  + bx + c

where

a \ne0

The give options are:

9x-2

5{x}^{2}+9x - 1

-2x^3+8 {x}^{2}  -7x +1

x^4-12x^3+8 {x}^{2}  -7x +1

From the given options, the only expression which is quadratic is

5 {x}^{2}  + 9x - 1

where a =5, b=9 and c=-1

Therefore the correct choice is the second option.

3 0
4 years ago
The Blakely family has driven 50 miles of a 200-mile trip. Their car travels 30 miles per gallon of gas. How many gallons of gas
Alja [10]
Total gallons needed
1 gallon / 30 miles * 200 miles = 20/3  gallons = 6.67 gallons

<span>gallons used so far : </span>
1 gallon /  30 miles *  50 miles  = 5/3 gallons = 1.67 gallons

<span>remainder  : </span>
<span>20/3 - 5/3 = 15/3 = 5 gallo</span>
3 0
3 years ago
Read 2 more answers
Use intervals to describe the real numbers satisfying the inequalities.
Alexxx [7]
To help with your math, try https://www.cymath.com/answer.php?q=2%3C%3Dx%3C3 because it explains everything!
8 0
4 years ago
Write an expression to represents the product of 6 and the sum of w and 5
muminat
6(w+5) represents the product of 6 and the sum of w and 5. the product means multiplication, and the sum means addition.

6(w+5) also equals 6w+6(5), or 6w+30, because of the distribution property.
6 0
3 years ago
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