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
eimsori [14]
4 years ago
12

Please help

Mathematics
2 answers:
mixas84 [53]4 years ago
8 0

Answer: 16

Step-by-step explanation:

law of cosines says that c^2 = a^2 + b^2 -2abcosC

so c^2 = 3^2 +15^2 - 2*2*15*cos108

c^2 = 234 -  (-27.8115294937 )

c^2 = 261.811529494

c = 16.18 rounds to 16

Ronch [10]4 years ago
3 0

Answer:

16

Step-by-step explanation:

c² = a² + b² - 2(a)(b)cos(C)

c² = 3² + 15² - 2(3)(15)cos(108)

c² = 261.8115295

c = 16.18059114

You might be interested in
9(x+3)=4x-3 I need to use the distributive property to solve
algol [13]

Answer:

x= 6

Step-by-step explanation:

8 0
4 years ago
On a number line, point D is at -3, and point E is at 6. The point F lies on DE. The ratio of DF to FE is 2:3. Where does point
expeople1 [14]

Answer: point F is at <u>   0.6   </u> on the number line

=============================================================

Explanation:

The ratio 2:3 scales up to 2x:3x for some positive real number x.

This means the distance from D to F is 2x units, and the distance from F to E is 3x units. Combine those two smaller distances to get 2x+3x = 5x to represent the full distance from D to E.

D is at -3 and E is at 6. This is a distance of 9 units since |-3-6| = |-9| = 9

Set this equal to the 5x from earlier and solve

5x = 9

x = 9/5

x = 1.8

This leads to 2x = 2*1.8 = 3.6

Therefore, we'll move 3.6 units from -3 to -3+3.6 = 0.6 which is the location of point F on the number line.

Notice that from 0.6 to 6 is 5.4 units and that 3x = 3*1.8 = 5.4 matches up to help confirm the answer.

5 0
3 years ago
Mimo sper 56.24 for a new binder $195 for a notebook, and
viktelen [127]

Answer:

251.24$

Step-by-step explanation:

In order to find the answer to this question you just need to add the total cost together.

What we do know:

B=56.24

NM=195

56.24+195=251.24

=251.24

Hope this helps.

7 0
3 years ago
Read 2 more answers
Which expression is equivalent to  4 7/8 ÷ 4 1/4​
cupoosta [38]

Answer:

Improper fraction: 39/34

Proper fraction: 1 5/34

Decimal: 1.147 (rounded to the nearest thousandths).

Step-by-step explanation:

Solve each expression given, if it has the same result, then the expressions is equivalent. Solve the given expression:

4 7/8 ÷ 4 1/4

First, change all fractions into improper fractions:

4 7/8 = (4 * 8)/8 + 7/8 = 32/8 + 7/8 = 39/8

4 1/4 = (4 * 4)/4  + 1/4 = 16/4 + 1/4 = 17/4

Next, find common denominators. Note that what you do to the denominator, you must do the numerator:

(17/4) * (2/2) = (34/8)

39/8 ÷ 17/4

Solve. First, change the division sign into multiplication, and then flip the second fraction:

39/8 ÷ 17/4 = 39/8 x 4/17

Multiply straight across:

39/8 x 4/17 = (39 x 4)/(8 x 17) = 156/136 = 39/34 (simplified), or 1 5/34.

~

7 0
3 years ago
Create a memory device to help you remember the quadratic formula. The device could be a song, drawing, rhyme, mnemonic device,
Lostsunrise [7]

Answer:

q-u-a-d-r-a-t-i-c  f-o-r-m-u-l-a

Step-by-step explanation:

6 0
4 years ago
Other questions:
  • The average lion runs 50 miles per hour what is its speed in feet-per-second?
    7·1 answer
  • Men and women (ages 22–40) were surveyed to choose a favorite free-time activity: playing sports, dancing, or watching movies/TV
    9·2 answers
  • Factor the expression.<br> x² - 6x – 16
    10·2 answers
  • HURRY FAST REPLIESSS
    11·1 answer
  • Goran is riding his bike. The number of revolutions his wheels make varies directly with the distance he travels. See the graph
    14·1 answer
  • A trencher can be rented for $27 an hour or $145 a day. If you need the trencher for 6 hours, how much money
    13·1 answer
  • Someone pls help me ill give out brainliest pls don’t answer if you don’t know
    15·2 answers
  • Tim has
    11·1 answer
  • Each student in a group of 32 students was asked the following question.
    15·1 answer
  • The first three terms of a sequence are given. Round to the nearest thousandth (if necessary). 360, 353,346,... 360,353,346,...
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!