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Zinaida [17]
3 years ago
8

Please help

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
4 0

Answer:

cos (theta) = √21/5

Step-by-step explanation:

sin (theta) = 2/5

(sin (theta))^2 = 4/25

4/25 + (cos (theta))^2 = 1

(cos (theta))^2 = 1 - 4/25 = 21/25

cos (theta) = √21/5

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I dont get this. I need help
djverab [1.8K]

The model suggests the equation 3x-4 = 6-2x and the solution is x = 2.

What is equation?

In arithmetic, associate equation could be a formula that expresses the equality of 2 expressions, by connecting them with the sign =

Main body:

According to question,

there are 3 bars for x and 2 bars for -x  so it shows

The equation becomes :

3x - 4 = 6-2x

5x = 10

x =2

Hence the solution to this equation is 2.

To know more about equation click on the link below

brainly.com/question/22688504

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6 0
1 year ago
Solve x plssssss :)))))
blondinia [14]

Answer:

x = 43

Step-by-step explanation:

180 - 65 = 115

115 = x + 72

<u>-72        -72 </u>

43 = x

x = 43

7 0
3 years ago
The table shown below gives the approximate number of pieces of mail handled by the United States Postal Service for different y
netineya [11]

Answer:

Step-by-step explanation:

Answer:

1.08×10^11

Step-by-step explanation:

1.08 times 10 to the power of 11

4 0
3 years ago
Twice the sum of a number and seven is eight find the number
pickupchik [31]
<span>twice the sum of a number and seven is 8
2(x+7)=8</span>
7 0
3 years ago
Find the area of parallelogram ABCD given m A = 30 and the following measures.
Nuetrik [128]

Answer: SECOND OPTION

Step-by-step explanation:

The area of a parallelogram can be calculated with this formula:

A=bh

Where "b" is the of one base and "h" is the height.

You can observe in the figure that "b" and "h" are:

b=AB=4\sqrt{2}ft\\\\h=AX=3ft

Then, substituting these values into the formula, you get that the area of the given parallelogram is:

A=(4\sqrt{2}ft)(3ft)\\\\A=12\sqrt{2}ft^2

This matches with the second option.

4 0
3 years ago
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