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
kirill [66]
2 years ago
8

What is the measure of 21? 100° 90° 80° 85° 95%​

Mathematics
1 answer:
Scorpion4ik [409]2 years ago
8 0

Answer:

A quadrilateral's interior angles have a sum of 360°.

Given that we have 85°, 100°, and 90°(the right angle), and an unknown angle.

We can add these angles plus the unknown angle to equal a total of 360°.

85 + 100 + 90 + x(our unknown missing angle) = 360

simplify

275 + x = 360

Isolate x by subtract 275 from both sides;

-275       -275

x = 85, ∠1 = 85°

We can also double check:-

85 + 100 + 90 + <u>85</u> = 360

360 = 360 which is correct.

You might be interested in
Plz help. Which problem is a linear equation?
Romashka [77]

Answer:

I think the answer should be A

7 0
3 years ago
Convert the angle – 1.5 radians to degrees, rounding to the nearest ioth.
mariarad [96]

Answer:

85.9

Step-by-step explanation:

4 0
3 years ago
What else would need to be congruent to show that ABC = DEF by SAS?
Alona [7]

The answer us A.

Line AC needs to be congruent to DF because for SAS (side angle side) we have a side (BA and DE) and an angle (A and D) so we need another side.

3 0
3 years ago
Read 2 more answers
PLEASE HELPPPP ! 16^x=64^x+4
Vladimir [108]

Answer:

x = -12

Step-by-step explanation:

Set logs up on both sides-

log 16^x = log 64^x+4

The variable goes behind because of the exponent log <em>property</em> (exponents are permitted to go behind the log to multiply)-

x * log 16 = x + 4 * log 64

Divide both logs out-

log 64/log 16 = 1.5

Simplify-

x = x+4(1.5)

1.5x + 6 = x

Remove 1.5-

1 - 1.5 = -.5x

Simplify-

-.5x = 6

Divide both sides-

6/-.5x = -12

Hence, the answer would be -12

4 0
3 years ago
Which expression is equivalent to 2(-3x+5)?<br> A.-6x+5<br> B.-6x+10<br> C.6x-10<br> D.6x-5
pochemuha
B if you’re doing distributive property
5 0
3 years ago
Read 2 more answers
Other questions:
  • 1. Find value of x
    8·1 answer
  • The lock is numbered from 0 to 49. Each combination uses three numbers in a right, left, right pattern. Find the total number of
    15·1 answer
  • A tree is 44.55 feet tall. What is its height in meters?
    13·1 answer
  • What is <br> y = - (2+2)(x - 1)<br> On a graph
    10·1 answer
  • A person has a 5% chance of winning a free ticket in a state lottery. She plays the game 12 times. What is the probability she w
    12·1 answer
  • Pls help. I WILL KISS U!4!2!3! (REAL!!) pls n ty.
    15·1 answer
  • A pool is filling up at a rate 7 gallons per minute. which equation best represents y, the total amount in the pool after x minu
    5·2 answers
  • What is the circumference of letter T??
    15·1 answer
  • Is (-1,3) a solution for y &lt; 2x + 5?
    15·1 answer
  • Lauren woke up one morning and saw frost on the windows. It was -2°C outside. Later in the day, the frost melted. At 3 p.m. it w
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!