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3 years ago

Find x in this 45°-45°-90° triangle. x = 4.5√2 9 18

Mathematics

1 answer:

postnew [5]3 years ago

5 0

Answer:

x = 9

Step-by-step explanation:

Using the sine ratio in the right triangle and the exact value

sin45° = $\frac{1}{\sqrt{2} }$ , then

sin45° = $\frac{opposite}{hypotenuse}$ = $\frac{x}{9\sqrt{2} }$ = $\frac{1}{\sqrt{2} }$ ( cross- multiply )

x × $\sqrt{2}$ = 9 $\sqrt{2}$ ( divide both sides by $\sqrt{2}$ )

x = 9

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The timekeeper for a particular mile race uses a stopwatch to determine the finishing times of the racers. He then calculates th

insens350 [35]

Answer:

300 seconds = 5 minutes

Step-by-step explanation:

At first convert the time in minutes which is

5.75 * 60 = 345 seconds

No as the average is 345 seconds at starts from 45 so we subtract that time from 45 seconds

345-45 = 300 seconds (Mean)

So 300 seconds = 300/60 = 5 minutes

So the Accurate mean is 5 minutes

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3 years ago

There are 3 3/4 pounds of bricks in a bag. Each brick weighs 5/8 of a pound. How many bricks are in the bag.

Bess [88]

Answer: There are 6 bricks in the bag.

Step-by-step explanation:

Convert from mixed number to decimal number. To do it, divide the numerator of the fraction by the denominator and add the result to the whole number part. Then:

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Convert from fraction to decimal number. To do it you need to divide the numerator by the denominator. Then, you get:

$\frac{5}{8}lb=0.625\ lb$

Let be "x" the number of bricks in the bag.

Based on the information given in the exercise, you can set up the following proportion:

$\frac{1}{0.625}=\frac{x}{3.75}$

Finally, you must solve for "x" in order to find its value. This is:

$(3.75)(\frac{1}{0.625})=x\\\\x=6$

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3 years ago

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marishachu [46]

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Step-by-step explanation:

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3 years ago

Three vertices of a rectangle are located on the coordinate plane shown below. Coordinate plane with points labeled Part A Which

Harlamova29_29 [7]

Answer:

Part A

Which is the ordered pair for Point B?

A. (2, 8)

B. (6, 8)

C. (6, 6)

D. (8, 6)

Part B

Which point is at (8, 2)?

A. A

B. B

C. C

D. None of these

Part C

What are the coordinates of point A?

Enter your answer in the boxes.

(

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Part D

What are the coordinates of the fourth vertex of the rectangle?

Enter your answer in the boxes.

(

)Step-by-step explanation:

7 0

3 years ago

Just want to make sure

stepan [7]

3x + 3y = 3 hope this helped

4 0

3 years ago

Read 2 more answers