Abc is isosceles.
a is 3x+10
c is x+50
what is a?

Angle A = 55°

Step-by-step explanation:

So a property of an isosceles triangle is that two of the sides are equal, and that the angles opposite to those sides are also equal. What the problem wants you to know here is that angle A and angle C are equal.

Knowing that, we can set up the following system of equations and solve:

3x + 40 = x + 50

2x = 10

x = 5

So now that we know x = 5, we can plug that into angle A:

angle A = 3(5) + 40

= 15 + 40

= 55

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

there is no grid

step-by-step explanation: