1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KiRa [710]
3 years ago
8

The vertex angle of an isosceles triangle is 20° less than the sum of the base angles. Which system of equations can be used to

find the measure of the vertex and base angles?
A)
v + 2b = 180; 2b - 20 = v


B)
v + 2b = 180; 2b + 20 = v


C)
v - 2b = 180; v + 2b = -20


D)
v - 2b = 180; -2b - 20 = v
Mathematics
1 answer:
WINSTONCH [101]3 years ago
6 0

The answer to the above question can be explained as under -

We know that, the sum of angles of triangle is 180°.

So, vertex angle plus base angles are equal are equal to 180°.

Let the vertex angle be represented by "v" and base angles be represented by "b".

Thus,  v + b + b = 180°

So,  v + 2b = 180°

Next, the question says, the vertex angle is 20° less than the sum of base angles.

Thus, 2b - 20° = v

<u>Thus, we can conclude that the correct option is A) v + 2b = 180°, 2b - 20° = v</u>

You might be interested in
BRAINLIEST FOR WHOEVER ANSWER CORRECTLY!!!
WARRIOR [948]

Answer:

39/50 and 0.78

Step-by-step explanation:

78% = 78/100 (or 78 hundredths) = 0.78

39 ÷ 50 = 0.78

6 0
3 years ago
Read 2 more answers
Temperature Suppose there is a 1.9°F drop in temperature for every thousand feet that an airplane
gtnhenbr [62]

Answer:

  29.4 °F

Step-by-step explanation:

There are ten thousands in 10,000. (Amazing, eh?) So, the temperature will drop by 10 × 1.9 °F = 19 °F.

A drop of 19 °F from 48.4 °F is ...

  48.4 -19 = 29.4

The temperature at 10,000 ft will be 29.4 °F.

8 0
2 years ago
Factorise 3ab²+15a²b³+21a³b²​
evablogger [386]

Given:

The expression is

3ab^2+15a^2b^3+21a^3b^2

To find:

The factor form of the given expression.

Solution:

We have,

3ab^2+15a^2b^3+21a^3b^2

Taking out the common factors, we get

3ab^2(1+5ab+7a^2)

It is clear that (1+5ab+7a^2) cannot be factories further.

Therefore, the factorized form of the given expression is 3ab^2(1+5ab+7a^2).

5 0
3 years ago
Which of the following is a like radical to cube rt of 7x
kakasveta [241]

Answer:

\sqrt[3]{7x}

Step-by-step explanation:

Given

7x

Required

The radical statement

Cube root is represented as:

\sqrt[3]{}

Considering 7x, the expression is:

\sqrt[3]{7x}

3 0
3 years ago
What is the area of this trapezoid?
Alexandra [31]

Answer:

440cm²

Step-by-step explanation:

*Area= (a+b)/2×h

(19+25)/2*20

= _ * 440cm². *_

3 0
1 year ago
Other questions:
  • Nikita wants to apply for student aid to fund her college education. Arrange the steps involved in Nikita’s application for fina
    13·1 answer
  • Please help me!!! Will get brainliest!!!
    14·2 answers
  • The graph of a function is shown:
    6·1 answer
  • Suppose a city with population 300 comma 000 has been growing at a rate of 3​% per year. If this rate​ continues, find the popul
    14·1 answer
  • Why do we Sample instead of looking at the entire population if we understand that a Sample is not the true representative of th
    7·1 answer
  • Which number line model shows 8 x 1/2
    14·2 answers
  • 10x – 5y + 2x – Зу<br> Simplify this expression
    8·2 answers
  • The measure of angle x= _ degrees
    15·2 answers
  • A ladder is leaning against a vertical wall. The distance from the top of the ladder to the base of the wall is 17 feet. The dis
    6·1 answer
  • Please can i get answers on here and not from a download website.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!