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DaniilM [7]
3 years ago
7

I need to find the area

Mathematics
1 answer:
Anton [14]3 years ago
6 0

Answer:

78 ft²

Step-by-step explanation:

(11+15)/2x6=

26/2x6

13x6

78

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A scientist receiving a new sample of plutonium knows that the sample will not be of use to him after 90 percent of the radioact
lord [1]

Answer:

Step-by-step explanation:

8 0
4 years ago
Help with the first question!! Is it right??
Aloiza [94]
No its 20 u should know that
6 0
3 years ago
The supplement of an angle is 80° less than three times the measure of the complement of the angle find the measure of the suppl
tresset_1 [31]

Answer:

135

Step-by-step explanation:

The supplement of an angle is 80° less than three times the measure of the complement of the angle find the measure of the supplement of the angle

Two Angles are Supplementary when they add up to 180 degrees.

Two Angles are Complementary when they add up to 90 degrees

Let the angle = x

Supplement of the angle = y

The supplement of an angle is 80° less than three times the measure of the complement of the angle find the measure of the supplement of the angle

x - 180 = 3(x - 90)

x - 180 = 3x - 270

Collect like terms

3x - x = 270 - 180

2x = 90

x = 90/2

x = 45

x+ y = 180

45 + y = 180

y = 180 -45

y = 135

4 0
4 years ago
A square picture is mounted on a larger rectangular sheet of poster paper leaving a border around the picture of 2 inches on the
Bumek [7]

An equation that can be used to determine the value of x is x² + 5x - 36 = 0.

To answer the question, we need to know what equations are

<h3>What is an equation?</h3>

An equation is an expression which shows the relationship between two variables.

Given that the x represents the length of side of the square picture and the rectangular sheet poster leaving a border around the picture of 2 inches on the bottom and 1 inch on each remaining sides.

Then,

  • The width of the rectangular poster is W = x + 2 + 1 = x + 3.
  • The length of the rectangular poster is L = x + 1 + 1 = x + 2

So, the area of the rectangular sheet poster is A = LW

= (x + 2)(x + 3)

Since the rectangular sheet poster has an area of 42 square inches, A = 42 in².

So, (x + 2)(x + 3) = 42

x² + 3x + 2x + 6 = 42

x² + 5x + 6 - 42 = 0

x² + 5x - 36 = 0

So, an equation that can be used to determine the value of x is x² + 5x - 36 = 0.

Learn more about equations here:

brainly.com/question/1884491

#SPJ1

6 0
2 years ago
Solve for x:<br><br> 3x – 14 = -5x + 2
dalvyx [7]

Hello there!

3x-14=-5x+2

Add 5x to both sides:

3x-14+5x=-5x+2+5x\\8x-14=2

Add 14 to both sides:

8x-14+14=2+14\\8x=16

Now divide both sides by 8:

\frac{8x}{8}=\frac{16}{8}

In our last step, we will simplify 16/8:

\frac{16}{8}=2\\ x=2

Hope this helps!

AT2309

7 0
3 years ago
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