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
jarptica [38.1K]
3 years ago
8

Combine the like terms to create an equivalent expression:

Mathematics
1 answer:
Sphinxa [80]3 years ago
6 0

Answer:

  7k

Step-by-step explanation:

  −k−(−8k) = -k +8k = 7k

You might be interested in
Please help me with this :)<br>If fake answer, then will be reported!​
arsen [322]

Answer:

10 miles less

Step-by-step explanation:

To get the direct distance first, we use the pythagorean theorem. Distance from Ferris to Butte directly would be the hypotenuse. By solving for the hypotenuse, we have 25 miles. Now the distance used previously is 35 mile. Hence, it (35 - 25 = 10 ) miles less.

3 0
3 years ago
-x+y=15−x+y=15 and -5x-3y=27−5x−3y=27 <br> Solve the system of equations by combining the equations
Arisa [49]

Answer:

x = -9, y = 6.

Step-by-step explanation:

-x + y = 15

-5x - 3y = 27

From the first equation:

y = x + 15.

Substituting for y in second equation:

-5x - 3(x + 15) = 27

-8x - 45 = 27

-8x = 72

x = -9.

Now plug x = -9 into equation 1

-(-9) + y = 15

y = 15 -9 = 6.

8 0
3 years ago
The grocery store sells kumquats for $4.50 a pound and Asian pears for $4.00 a pound. Write an equation in standard form for the
Kipish [7]

k = kumquats

p = Asian pears

4.50k + 4.00p= 12


5 0
3 years ago
Read 2 more answers
Fabian is purchasing a home for $89,500 and is financing 75% of it. The documentary stamp tax on the deed in his state is $0.70
ss7ja [257]
Answer: C) $462.96
Hope this will helpful.
Thank you.
6 0
3 years ago
Find sin 2x, cos 2x, and tan 2x from the given information.<br> cscx=4,tanx&lt;0.
lutik1710 [3]

Answer:

Step-by-step explanation:

Given the expression cosec (x) = 4 and tan(x)< 0

since cosec x = 1/sinx

1/sinx = 4

sinx = 1/4

From SOH, CAH TOA

sinθ = opposite/hypotenuse

from sinx = 1/4

opposite = 1 and hypotenuse = 4

to get the adjacent, we will use the Pythagoras theorem

adj² = 4²-1²

adj² = 16-1

adj ²= 15

adj = √15

cosx = adj/hyp = √15/4

tanx = opposite/adjacent = 1/√15

since tan < 0, then tanx = -1/√15

From double angle formula;

sin2x = 2sinxcosx

sin2x = 2(1/4)(√15/4)

sin2x = 2√15/16

sin2x = √15/8

for cos2x;

cos2x = 1-2sin²x

cos2x = 1-2(1/4)²

cos2x = 1-2(1/16)

cos2x= 1-1/8

cos2x = 7/8

for tan2x;

tan2x  = tanx + tanx/1-tan²x

tan2x = 2tanx/1-tan²x

tan2x = 2(-1/√15)/1-(-1/√15)²

tan2x = (-2/√15)/(1-1/15)

tan2x = (-2/√15)/(14/15)

tan2x = -2/√15 * 15/14

tan2x = -30/14√15

tan2x = -30/7√15

rationalize

tan2x =  -30/7√15 * √15/√15

tan2x =  -30√15/7*15

tan2x =  -2√15/7

5 0
3 years ago
Other questions:
  • Which equation could be used to solve this problem?
    14·1 answer
  • Calculate the area of the figure below using the following information:
    6·1 answer
  • Write the sum as a product of two factors 25g+10+5<br><br>​
    14·1 answer
  • What is an equation of a line that has a slope of 4 and a y intercept of -6
    9·2 answers
  • Danny has a garden that can hold up to 65 plants. He currently has 10 plants already planted. He buys packs of seeds. Each pack
    10·2 answers
  • Lila is building a playground. There are 9 different slides and 5 swing sets to choose from. If the playground will include one
    15·1 answer
  • Question 2 of 10
    13·2 answers
  • Numerical expressions <br> X + 5=2<br> M - 2 =3<br> X/-8 = -1<br> 5G=-20<br> 1P/6 =0<br> D-15=14
    8·1 answer
  • I need help with this please
    7·1 answer
  • What value of X is always
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!