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pentagon [3]
3 years ago
6

Combine the like terms to create an equivalent expression:2r+1+(−4r)+7

Mathematics
1 answer:
STatiana [176]3 years ago
3 0

Answer:

2r+1+(-4r)+7

= -2r+8

= -2(r+4)

Step-by-step explanation:

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the area of the triangle below is 1/4 square meters. what is the length of the base. express your answer in simplest form
Alexeev081 [22]

Answer:

4/5

Step-by-step explanation:

<u>Given</u>,

Area of the triangle = 1/4 square meters

From the diagram,

Height = 2/5 m

<u>To find</u> : Length of the base

<u>Formula</u> : -

A = bh/2

Here,

A denotes Area

b denotes Base

h denotes Height

A = 1/4

h = 2/5

A = bh/2

Cross multiply,

A * 2 = bh

2A = bh

2 * (1/4) = b * (2/5)

(1 * 2)/4 = (b * 2)/5

2/4 = 2b/5

1/2 = 2b/5

Cross multiply,

1 * 5 = 2 * 2b

5 = 4b

b = 4/5 meters

Hence,

The length of the base is 4/5 meters.

5 0
2 years ago
What is y-intercept as an ordered pair (x,y) for y = 1/3x - 1 !!
user100 [1]

Answer:y=1

Step-by-step explanation:

5 0
3 years ago
How to simplify -3 (4×-5y-5×)
Phoenix [80]
-12x + 15y + 15x
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4 0
3 years ago
Brett painted three walls. Each wall was 9 ft tall and 12 ft long. How much wall area did he paint
julsineya [31]

Answer:

First we need to calculate the are of each wall, since we alredy knew the length (l) and the width (w) which is the height of the wall in this case:

A = wl = 9 . 12 = 108 (ft²)

We also know that he painted 3 walls, we need to multiply our first result by 3, in other words, the area of wall that Brett painted is the sum of the area of three walls: 108 . 3 = 324 (ft²)

8 0
3 years ago
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Help please, im confused on what exactly y is
Amanda [17]

Answer:

3

Step-by-step explanation:

3 0
3 years ago
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