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
EastWind [94]
3 years ago
7

you are making a picture frame in your shop class. two peices of wood are cut to form complementary angles so they fit fit toget

her properly. one angle needs to be (2x+39) and the othwr angle needs to be (7x-21)
Mathematics
1 answer:
Andrews [41]3 years ago
5 0

Two angles are complementary when their sum is equal to 90°.

So, ( 2x + 39 ) + ( 7x - 21 ) = 90°

9x + 18° = 90°

x = 8°

Putting value of x in the angles given :

( 2x + 39 )° = 2(8°) + 39° = 55°.

( 7x - 21 )° = 7(8°) - 21° = 35°.

Therefore, the angles are 55° and 35°.

Hence, this is the required solution.

You might be interested in
Determine the y-intercept of the following equation.<br> (-2 - 1)(2+3) = y
egoroff_w [7]

Answer:

(0,-15)

Step-by-step explanation:

i think.. trust someone else!! I'm not 100% sure...

3 0
2 years ago
Suppose the mean height for adult males in the U.S. is about 70 inches and the standard deviation is about 3 inches. Assume men’
nlexa [21]

Question options :

a. They should be between 64 and 76 inches tall.

b. They should be close to the height that is 95% of the mean. That is, 66.5 inches, plus or minus 2 standard deviations.

c. They should be at or below the 95th percentile, which is 74.92 inches.

d. None of the above.

Answer: a. They should be between 64 and 76 inches tall.

Step-by-step explanation:

Given the following :

Assume men's height follow a normal curve ; and :

Mean height = 70 inches

Standard deviation= 3 inches

According to the empirical rule ;

Assuming a normal distribution with x being random variables ;

About 68% of x-values lie between -1 to 1 standard deviation of the mean. With about 95% of the x values lying between - 2 and +2 standard deviation of mean. With 99.7% falling between - 3 to 3 standard deviations from the mean.

Using the empirical rule :

95% will fall between + or - 2 standard deviation of the mean.

Lower limit = - 2(3) = - 6

Upper limit = 2(3) = 6

(-6+mean) and (+6+ mean)

(-6 + 70) and (6+70)

64 and 76

8 0
3 years ago
1000 + 10000 divided by 100000​
Brums [2.3K]

Answer:

Step-by-step explanation:

1/100

8 0
3 years ago
Read 2 more answers
Annie buys some greeting cards. Each card costs $1.75. She pays with a twenty dollar bill.
zaharov [31]

Answer:

Step-by-step explanation:

7 0
3 years ago
Why is gravity different on other planets?
Sliva [168]

Answer:

2--2-2-2-2-2-2-2-2--2-2-2-2--2

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Select the postulate or theorem
    5·1 answer
  • I used 8 bags of sand for 12m2, how much will i need for 15m2
    13·1 answer
  • An ice sculpture is melting from the heat. it's height changes by -2/25 every hour, what will it be after 5 hours?
    12·1 answer
  • PLEASE HELP ASAP!! CORRECT ANSWERS ONLY PLEASE!!!
    8·1 answer
  • Is -94 a rational number
    15·1 answer
  • Given that sin(x)= 7/11, find cos(90-x)
    13·1 answer
  • Please!! What's the right answer. Mathematics 7 the Grade.
    5·1 answer
  • Find the length of the leg of the right triangle leave your answer in simplest form?
    9·1 answer
  • Solve 2/3 divided by 4/5<br><br> a.6/15<br> b.6/8<br> c.8/15<br> d.5/6
    7·2 answers
  • A watermelon seed is 0.4cm long. How far would a line of 126 stretch?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!