All categories

3 years ago

Find the value of x. Round your answer to the nearest tenth. (One number after the decimal.)

Mathematics

2 answers:

nadya68 [22]3 years ago

5 0

Answer:

x = ~8.9

Step-by-step explanation:

a^2 + b^2 = c^2

c is the long side

a and b are the other two shorter sides

this means

x^2 + 19^2 = 21^2

x^2 + 361 = 441

x^2 = 441- 361

x^2 = 80

square root of 80 = ~8.9

x = ~8.9

Artist 52 [7]3 years ago

3 0

Answer:

8.9

Step-by-step explanation:

$4\sqrt{5}$ =8.9444

rounded = 8.9

You might be interested in

The measures of the angles of a triangle are 55°, 25, and 100°. What is the measure of the largest exterior angle

Over [174]

Answer:

155answer.

Step-by-step explanation:

25 is 80 and thaths why its 157

8 0

3 years ago

16.24 - 14 =

koban [17]

Answer:

2.24

Step-by-step explanation:

16.24-14=2.24.

4 0

3 years ago

Read 2 more answers

Find m∠ABC = 7x - 4 and m∠BDC = 9x - 1 and and m∠ABC = 107°, find x, m∠ABC and m∠BDC.

Artyom0805 [142]

Answer:

m<BDC = 62 degrees

Step-by-step explanation:

Using the expression;

<ABC = <ABD + <DBC

107 = 7x-4 + 9x - 1

107 = 16x-5

16x = 107 + 5

16x = 112

x = 112/16

x = 7

Get m<DBC

m<BDC = 9x - 1

m<BDC = 9(7)-1

m<BDC = 63 - 1

m<BDC = 62 degrees

6 0

3 years ago

Is x=-4 and y=3 a solution of the equation 2x -5y=-23

pishuonlain [190]

Answer:

Yes

Step-by-step explanation:

First you pull them into the equation

2(-4)-5(3)=-23

Distribute

-8-15=-23

-23=-23

7 0

2 years ago

Read 2 more answers

Which quadratic regression equation best fits the data set?

g100num [7]

The 4th selection is appropriate.

_____
Desmos.com has a wonderful graphing calculator. They also have apps for Android and iOS phones and tablets. Of course, your TI-83/84 or equivalent will do this, too.

7 0

3 years ago

Read 2 more answers