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3 years ago

15

I don't understand :(

1 answer:

vodomira [7]3 years ago

6 0

A) area = ( 1/2 ) (base) (height) = (1/2) (9) (5) = 22.5 square units

b) area = 1/2 x base x height = 1/2 x 7 x 6 = 21 square units

c) area = 1/2 x base x height = 1/2 x 5 x 5 = 12.5 square units

You calculate the length of the sides by counting the number of squares

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Find c in the pic below

Fiesta28 [93]

Answer:

A

Step-by-step explanation:

To find the angle inside the triangle (to the right side of 90 degree angle), we first have to find the adjacent angle (below it).

Angle 122 and that adjacent angle is same (parallel lines cut by transversal -- they are corresponding angles).

So that angle is 122.

The inside triangle angle (what we want) is adjacent to 122, so we can write:

Angle + 122 = 180 [straight angle/straight line is 180 degrees]

Solving for that angle, we have:

Angle = 180 - 122 = 58

Now, looking at the triangle, Side C is "opposite" of 58° and side "20" is the side that is "hypotenuse" [side opposite of 90 degree angle is hypotenuse).

<em>Which trig ratio relates "opposite" and "hypotenuse"??</em>

<em>Yes, it is SIN. Thus we can write:</em>

<em> $Sin(58)=\frac{Opposite}{Hypotenuse}=\frac{C}{20}$ </em>

<em />

<em>We can now solve for C:</em>

<em> $Sin(58)=\frac{C}{20}\\C=20*Sin(58)\\C=16.96$ </em>

<em />

<em>Correct answer is A</em>

7 0

3 years ago

5x-2=3x+40 answer plz :')

noname [10]

X=21

5x(-3x) -2= 3x(-3x) +40

2x-2(+2)=40(+2)

2x=42

X=21

7 0

3 years ago

PLEASE HELP WILL GIVE BRAINLIEST! What is the following sum? Assume x > or equal to 0 and y is > or equal to 0.

Ira Lisetskai [31]

Answer:

Option (b) is correct.

The sum of given expression $\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}$ is $2xy\sqrt{y}+2xy^2\sqrt{x}$

Step-by-step explanation:

Given:Expression $\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}$

We have to find the sum of the given expression and choose the correct from the given options.

Consider the given expression $\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}$ .

$\sqrt{x^2y^3}$ can be written as $\sqrt{x^2y^2y}=xy\sqrt{y}$

Also, $2\sqrt{x^3y^4}$ can be written as $2\sqrt{x^3y^4}=2\sqrt{x^2x(y^2)^2}=2xy^2\sqrt{x}$

Now, the given expression becomes,

$\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}$

$=xy\sqrt{y}+2xy^2\sqrt{x}+xy\sqrt{y}$ .

Now, adding like term, terms having same variable with same degree.

$=2xy\sqrt{y}+2xy^2\sqrt{x}$ .

Thus, The sum of given expression $\sqrt{x^2y^3}+2\sqrt{x^3y^4}+xy\sqrt{y}$ is $2xy\sqrt{y}+2xy^2\sqrt{x}$

3 0

3 years ago

A sporting goods store pays 180 for a rubber raft. the percent of markup is 55 percent. find the rafts selling price

Alex_Xolod [135]

Multiply the cost by 1 + markup :

180 x 1 +0.55 =

180 x 1.55 =279

The answer is D. $279

8 0

4 years ago

How do you find this answer

AURORKA [14]

You have to find the slope and where it intercepts at

3 0

3 years ago