All categories

3 years ago

The measure of angle A in ABC is twice the measure of angle B and the measure of angle C is 20° less than the measure

Mathematics

1 answer:

diamong [38]3 years ago

7 0

Answer:

m∡A = 100°

m∡B = 50°

m∡C = 30°

Step-by-step explanation:

let 'x' = m∡B; 50°

let '2x' = m∡A; 100°

let 'x-20' = m∡C; 30°

x + 2x + x - 20 = 180

4x - 20 = 180

4x = 200

x = 50

You might be interested in

Rebekah bought g gallons of paint for $12.85 per gallon and b brushes for $4.79 each. Which expression can be used to determine

lesya [120]

Answer:

g12. 85 + b4. 79

Step-by-step explanation:

g and b is just the amount she buys

3 0

3 years ago

Read 2 more answers

If f(x) = 3x^2 – 2 and g(x) = 2x + 4, find (f- g)(x).

Andreas93 [3]

Answer:

(f - g)(x) = 3x² - 2x - 6

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

f(x) = 3x² - 2

g(x) = 2x + 4

(f - g)(x) is f(x) - g(x)

Step 2: Evaluate

Substitute: (f - g)(x) = 3x² - 2 - (2x + 4)
Distribute -1: (f - g)(x) = 3x² - 2 - 2x - 4
Combine like terms: (f - g)(x) = 3x² - 2x - 6

5 0

3 years ago

Solve for x. round to nearest hundredth. PLS HELPP. will award brainliest

DENIUS [597]

Answer:

$18.03$

Step-by-step explanation:

Formula: $a^{2}+b^{2}=c^{2}$

$15^{2}+10^{2}=x^{2}$

$225+100=x^{2}$

$x^{2}=325$

$x = 5\sqrt{13}=18.03$

6 0

2 years ago

The sum of a number and 4

allsm [11]

X + 4 is the answer to your question
djdhhdjdhrhehdjjdhdhe

4 0

2 years ago

Read 2 more answers

(3,5),slope -2 Show work

vova2212 [387]

Answer:

y=-2x+11

Step-by-step explanation:

equation of a line

y-b=m(x-a)

m=-2

a=3

b=5

sub into the equation

y-5= -2(x-3) multiply out the brackets and a negative multiply by negative equals positive

y-5=-2x+6

y=-2x+11

2x+y-11=0

8 0

3 years ago