Please help me answer these !!!!!

Please help on 10 thank you so michy

Archy [21]

The answer is 100 miles

3 0

3 years ago

!!help!! pls :((( im so confused pls help

SVEN [57.7K]

Step-by-step explanation:

for some reason the equation at the top says 7(x+2) but both of the equations at the bottom say 7(x-2)... I'm just going to do 7(x-2)

Emmanuels Work:

7(x-2)=91

distribute the 7 by multiplying both x and -2 by it

7x-14=91

add 14 to both sides

7x=105

divide both sides by 7

x=15

Mauricio's Work:

7(x-2)=91

to get rid of the 7 multiplication, divide both sides by 7

x-2=13

add 2 to both sides

x=15

5 0

2 years ago

Read 2 more answers

Plz help! According to the graph, what are the domain and range of f(x)

notsponge [240]

Answer:

Domain: [0, 40]

Range: [0, 20]

General Formulas and Concepts:

Algebra I

Domain is the set of x-values that can be inputted into function f(x)
Range is the set of y-values that are outputted by function f(x)
Interval Notation - [a, b] denotes inclusive, (a, b) denotes exclusive

Step-by-step explanation:

According to the graph, we see that our x-values span from 0 to 40. Since both are closed dots, they are included in the domain:

Interval Notation [0, 40]

Inequality Notation 0 ≤ x ≤ 40

According to the graph, we see that our y-values span from 0 to 20. Since both are closed dots, they are included in the range:

Interval Notation [0, 20]

Inequality Notation 0 ≤ y ≤ 20

8 0

3 years ago

Lisa's favorite chocolate candies are wrapped in the shape of a triangular prism with shiny gold paper as shown below. If all si

Tatiana [17]

Answer:

Surface Area = 150

Step-by-step explanation:

The surface area of this triangular prism is the sum of area of all the sides.

Surface Area = triangle 1 (with base 8 and height 3) + triangle 2 (same as triangle 1) + lateral surface 1 (with length 7 and width 5 (calculation shown below)) + lateral surface 2 (same as lateral surface 1) + bottom (side not shown with length 7 and width 8)

Triangle 1 area: $\frac{1}{2}bh=\frac{1}{2}(8)(3)=12$
Triangle 2 area: $\frac{1}{2}bh=\frac{1}{2}(8)(3)=12$
Lateral surface 1 (rectangle): $l*w=(7)(5)=35$
Lateral surface 2 (rectangle): $l*w=(7)(5)=35$
Bottom surface (rectangle): $l*w=(7)(8)=56$