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3 years ago

3. What is the area of the figure below?

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

8 0

Step-by-step explanation:

Area of the figure below=

$\frac{1}{2} \times 4 \times (10 + 3)$

$\frac{1}{2} \times 4 \times 13$

$2 \times 13$

26 in ²

optionA

Westkost [7]3 years ago

6 0

Answer A 26 in square (2)

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The tile along the edge of a triangular community pool needs to be replaced.

Gre4nikov [31]

Answer:

Third option: 12x^2+8x+25

Step-by-step explanation:

s1=8x^2

s2=4x^2+15

s3=8x+10

Total perimeter of the pool edge: P

P=s1+s2+s3

Replacing s1, s2 and s3 in the formula above:

P=(8x^2)+(4x^2+15)+(8x+10)

P=8x^2+4x^2+15+8x+10

Adding like terms:

P=12x^2+8x+25

6 0

3 years ago

Read 2 more answers

X2+ 1 = 9

Aleks04 [339]

Answer:

X = 4

Step-by-step explanation:

x2 + 1 = 9

We have to cross 1 over to the other side so that x becomes a value on its own. Because we are it over, the addition sign changes to subtraction which makes the expression,

x2 = 9- 1

x2 = 8

For x to stand alone we have to divide both sides by 2

x 2/2 = x

and 8/2 = 4

Therefore x=4 (Answer)

3 0

2 years ago

Help please will mark brainliest

natima [27]

Answer:

A table that has (0,0), (-1,1), (-4, 2) and undefined for any positive x value

Step-by-step explanation:

Reflecting across the y axis just changes the x values, it makes them negative. so $\sqrt{x}$ has points (0,0), (1,1), (4, 2) and so on. reflecting over the y axis makes them(0,0), (-1,1), (-4, 2) and again so on.

Also good to mention in $\sqrt{x}$ negative x values are undefined, so flipped over the y axis positive x values are undefined.

As for the answer it doesn't look like any of those shown. The first one is close, but the x values would need to swap their signs.

6 0

3 years ago

A company wants to decrease their energy use by 17%. If their electric bill is currently $2500 a month, what will their bill be

expeople1 [14]

We need to find out how much 17 percent of 2,500 is, and then subtract that amount by 2,500. We can use proportions to use this. We can set up a fraction with x/2500 and another fraction with 17/100. Then, we need to cross multiply. This gives us 42,500. Next, we can divide by 100. This gives us 425. We know that they will save $425 if they decrease their energy use by 17%. We now need to subtract $425 from $2,500. This gives us $2,075. If the company is successful in decreasing their energy use by 17%, their bill would be $2,075.