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
Lisa [10]
3 years ago
8

Ralph has a piece of shelving 3 m long. He is going to cut it into 4 equal lengths pieces. how long will each piece be?

Mathematics
1 answer:
marishachu [46]3 years ago
7 0

0.75 or 3/4 m each.

Extra letters: cdvaysoHAHboaihscvia


You might be interested in
What is the perimeter of a baseball diamond 90 ft on each sode
Maurinko [17]
The perimeter is 360 ft
5 0
3 years ago
I need help with questions #7 and #8 plz
katen-ka-za [31]

Answer:

7. A = 40.8 deg; B = 60.6 deg; C = 78.6 deg

8. A = 20.7 deg; B = 127.2 deg; C = 32.1 deg

Step-by-step explanation:

Law of Cosines

c^2 = a^2 + b^2 - 2ab \cos C

You know the lengths of the sides, so you know a, b, and c. You can use the law of cosines to find C, the measure of angle C.

Then you can use the law of cosines again for each of the other angles. An easier way to solve for angles A and B is, after solving for C with the law of cosines, solve for either A or B with the law of sines and solve for the last angle by the fact that the sum of the measures of the angles of a triangle is 180 deg.

7.

We use the law of cosines to find C.

18^2 = 12^2 + 16^2 - 2(12)(16) \cos C

324 = 144 + 256 - 384 \cos C

-384 \cos C = -76

\cos C = 0.2

C = \cos^{-1} 0.2

C = 78.6^\circ

Now we use the law of sines to find angle A.

Law of Sines

\dfrac{a}{\sin A} = \dfrac{b}{\sin B} = \dfrac{c}{\sin C}

We know c and C. We can solve for a.

\dfrac{a}{\sin A} = \dfrac{c}{\sin C}

\dfrac{12}{\sin A} = \dfrac{18}{\sin 78.6^\circ}

Cross multiply.

18 \sin A = 12 \sin 78.6^\circ

\sin A = \dfrac{12 \sin 78.6^\circ}{18}

\sin A = 0.6535

A = \sin^{-1} 0.6535

A = 40.8^\circ

To find B, we use

m<A + m<B + m<C = 180

40.8 + m<B + 78.6 = 180

m<B = 60.6 deg

8.

I'll use the law of cosines 3 times here to solve for all the angles.

Law of Cosines

a^2 = b^2 + c^2 - 2bc \cos A

b^2 = a^2 + c^2 - 2ac \cos B

c^2 = a^2 + b^2 - 2ab \cos C

Find angle A:

a^2 = b^2 + c^2 - 2bc \cos A

8^2 = 18^2 + 12^2 - 2(18)(12) \cos A

64 = 468 - 432 \cos A

\cos A = 0.9352

A = 20.7^\circ

Find angle B:

b^2 = a^2 + c^2 - 2ac \cos B

18^2 = 8^2 + 12^2 - 2(8)(12) \cos B

324 = 208 - 192 \cos A

\cos B = -0.6042

B = 127.2^\circ

Find angle C:

c^2 = a^2 + b^2 - 2ab \cos C

12^2 = 8^2 + 18^2 - 2(8)(18) \cos B

144 = 388 - 288 \cos A

\cos C = 0.8472

C = 32.1^\circ

8 0
3 years ago
A customer will be charged extra if the weight of their suitcase is above 48 pounds.
amm1812

Answer:

w>48 pounds

Step-by-step explanation:

The customer will be charged extra if the weight of their suitcase is above 48 pounds.

Let the weight of the suitcase = w (in pounds)

Therefore, w above (greater than) 48 pounds is written mathematically as:

w>48 pounds

This is the inequality that represents w, the weight of the suitcase in pounds, that will have an extra charge.

6 0
3 years ago
PLEASE ANSWER THANK YOU SO MUCH GUYS:)
babunello [35]

Answer:

  • We khow that the company charges 0.75 dollars to each ship
  • so c= 0.75* p
  • when the price is reduced the equaton will be :
  • c= 0.7*p

4 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIST
Deffense [45]

Answer:

slope= 0

y intercept= -27

Step-by-step explanation:

4y= -108

y= -27

slope= 0

y intercept= -27

since this line will always have -27 as its y value.

5 0
3 years ago
Other questions:
  • What is the product of 4/5x5/7?
    8·1 answer
  • Help please with this
    13·1 answer
  • HELP ME PLEASE ASAP !
    13·1 answer
  • Help <br> me <br> With this math problem
    5·1 answer
  • A wise man once said 200 reduced by 3 times my age is 50. What is his age?
    6·2 answers
  • My teacher can grade 25 homework assignments in 20 minutes. Is she working at a faster rate or slower rate than Ms. Jones, who i
    6·1 answer
  • HELP PLEASE!
    9·1 answer
  • A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The prem
    14·1 answer
  • Mr. gonzalez earns his living as a salary plus commission employee. his annual salary is $18,000. he makes 4% commission on all
    10·1 answer
  • 1) For what values is the statement true? sin(x+20)°=cos(y−10
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!