3 years ago

A triangle has one angle measuring 3X degrees a second angle measures 2X +20°

1 answer:

7 0

Answer : x = 20

Explanation :
3x + 2x +20 + 4x - 20 = 180

(3+2+4=9)

9x + 20 - 20
The 20s cancel each other out because one is positive and the other is negative

9x = 180

9x/9 = 180/9

X = 180 divided by 9

X = 20

You might be interested in

Find the value of each variable for the right triangles. make sure all answers are in reduced radical form. show your work.

dimulka [17.4K]

That's how you find the value for x

3 0

2 years ago

The weight of an object is equal to 3\4 of its own weight plus 3\4of a pound. What is the weight?

Phoenix [80]

Answer:

The weight of the object is 3 kg.

Step-by-step explanation:

Let object weight be x kg.

Now, as per the available data,

3/4 kg + 3/4 (x kg) = x kg

3/4 (1 + x) = x

1 + x = 4x/3

1 = x (4/3 - 1)

x = 1 / (1/3)

x = 3

Weight of Object is 3 kg.

Let's check if this value satisfies the first equation.

3/4 + 3/4 x 3 = 3/4 + 9/4 = 12/4 = 3

Hence proved.

8 0

3 years ago

During the days leading up to her piano recital, Lana practiced an average of 1 5/12 hours per day. Her total practice time was

marshall27 [118]

Answer:

Step-by-step explanation:

Divide 11 1/3 by 1 5/12 to find out the rough amount of days she practiced.

11.3333/1.41667 = 7.9999 or about 8

PLEASE MARK BRAINLIEST!

8 0

3 years ago

What is the value of x in the equation 4x + 8y = 40, when y = 0.8?

nadya68 [22]

$4x+8y=40 \ |:4 \\\\ x+2y=10 \\\\ x+2*0.8=10 \\\\ x+1.6=10 \\\\ x=10-1.6 \\\\ \boxed{x= 8.4}$

6 0

2 years ago

Which value is equivalent to 7 multiplied by 5 multiplied by 2 whole over 7 multiplied by 3, the whole raised to the power of 2

e-lub [12.9K]

Answer:

100 over 9

Step-by-step explanation:

The toughest part of this is to figure out exactly how to express that complex formula description.

You begin by writing the equation form as it is in written in English, the important words there are the 'whole' ones... which means to close the parenthesis.

Once you have written it all out as shown on the first line of the attached image, you just have to do the calculations, as demonstrated in the other 3 lines.

7 0

3 years ago

Read 2 more answers