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2 years ago

PLEASE HELP!!!! Find the value of x. 130 degrees Xdegrees

Mathematics

2 answers:

erastovalidia [21]2 years ago

5 0

Answer:

50 is your answer.

Step-by-step explanation:

=180 - 130 ( a triangle have only 180 degree )

= 50

strojnjashka [21]2 years ago

3 0

Answer:

Step-by-step explanation:

130+25+25=180

..........

.....

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Given the length of three sides of a triangle, which is a right triangle?

navik [9.2K]

Pythagoras, cool.
30^2 is 900
15^2 is 225
26^2 is 676
676+225 isn't 900 so it isn't A.

10^2=100
26^2=676
24^2=576
100+576=676 so B is a right angled triangle.

Hope this helps :)

6 0

2 years ago

Can someone please show steps for this? i tried using a calculator but there was no fog sign thing.

sattari [20]

Answer:

(f о g)(0) = 24

Step-by-step explanation:

f(x) = -5x - 1

g(x) = x² - 5

When you see (f о g)(#), they want you to plug the function g(x) into the function f(x).

First find g(0).

g(0) = (0)² - 5

g(0) = 0 - 5

g(0) = -5

Now plug g(0) = -5 into f(x) by replacing all x's with -5.

(f о g)(0) = -5(-5) - 1

Multiply.

(f о g)(0) = 25 - 1

Subtract.

(f о g)(0) = 24

6 0

2 years ago

-y varies inversely with x. If y = 8 and k (the constant of variation) = 19, what is x?

Dimas [21]

Answer:

Part 1) $x=2.375$

Part 2) $y=3.3$

Part 3) $k=6.7$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

Part 1) y varies inversely with x. If y = 8 and k (the constant of variation) = 19, what is x?

we know that

$y*x=k$

substitute the given values and solve for x

$8*x=19$

$x=19/8$

$x=2.375$

Part 2) y varies inversely with x, and k (the constant of variation) = 23. What is the value of y when x = 7?

we know that

$y*x=k$

substitute the given values and solve for y

$y*7=23$

$y=23/7$

$y=3.3$

Part 3) y varies inversely with x. When y = 6.7, x = 1. What is the value of k, the constant of inverse variation?

we know that

$y*x=k$

substitute the given values and solve for k

$6.7*1=k$

$k=6.7$

6 0

3 years ago

A cyclist rides into the country at an average speed of 10 miles per hour. When his bicycle gets a flat tire, he walks it back a

vladimir1956 [14]

Answer

Find out the how far into the country does he go.

To proof

Let us assume that the total diatance travelled into the country be x .

Formula

$Time =\frac{Distance}{Speed}$

As given

A cyclist rides into the country at an average speed of 10 miles per hour. When his bicycle gets a flat tire,

he walks it back at an average speed of 3 miles per hour.

If he returns home 6 and a half hours after he starts i.e the total time including the bike time and walk time of the cyclist be 6.5 hours.

Than the equation becomes

$\frac{x}{10} +\frac{x}{3} = 6.5$

L.C.M of (10,3) = 30

Than the equation becomes

3x +10x = 195

solving

13x = 195

$x = \frac{195}{13}$

x = 15 miles into the country

Hence proved

6 0

2 years ago

HELPPPP ASAPPPPPPPPPPPP

LenaWriter [7]

Answer:

Step-by-step explanation:

8 0

1 year ago