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
Ne4ueva [31]
3 years ago
6

Find the sum of -2x+5x-7 and -3x-4x-6​

Mathematics
1 answer:
scoray [572]3 years ago
8 0

Answer:

-4x-13

Step-by-step explanation:

To figure out the sum, you have to add like terms.

This is how it would look like:

-2x + 5x - 3x - 4x -7 - 6\\=3x - 3x - 4x - 13\\= -4x - 13

You might be interested in
Who know the gcf to this ^_^ha
Likurg_2 [28]
3 probably will be the gcf of it.... or maybe 3x^3 y^3 z Not sure tho
3 0
3 years ago
Read 2 more answers
Proving theorems about triangles
daser333 [38]

Answer:

Step-by-step explanation:

. should be a right angle triangle,

. must have 2 sides given

7 0
3 years ago
After m months, the height of a plant is 10+3m millimeters. How tall is the plant after eight months? Three years?
Oksanka [162]
Why not start out by writing a linear relationship for the plant height?

h(m) = 10 + 3m, where h is the height in mm and m is the time in years, starting from zero (0).

After 8 months, the plant height is h(8) = 10 mm + 3(8) mm, or 34 mm.

After 3 years (36 months), the plant ht. is h(36) = 118 mm.
4 0
3 years ago
Find the exact value of cot(15degrees) using half angle formulas?
liubo4ka [24]

Double angle (or half angle, depending how you look at it) identities:

\cos^2\dfrac x2=\dfrac{1+\cos x}2

\sin^2\dfrac x2=\dfrac{1-\cos x}2

\implies\cot^2\dfrac x2=\dfrac{\cos^2\frac x2}{\sin^2\frac x2}=\dfrac{1+\cos x}{1-\cos x}

So we have

\cot^215^\circ=\dfrac{1+\cos30^\circ}{1-\cos30^\circ}=\dfrac{1+\frac{\sqrt3}2}{1-\frac{\sqrt3}2}

\implies\cot^215^\circ=7+4\sqrt3

\implies\cot15^\circ=\sqrt{7+4\sqrt3}=2+\sqrt3

Note that when taking the square root, we should take into account that that could yield two possible solutions, but we know \cos15^\circ>0 and \sin15^\circ>0, so it's also the case that \cot15^\circ>0.

Also, the reason we have equality in the last step can be explained like so:

7+4\sqrt3=4+4\sqrt3+3=4+4\sqrt3+(\sqrt3)^2=(2+\sqrt3)^2

(not unlike the process used to complete the square)

8 0
3 years ago
Read 2 more answers
Need help ASAP on question #3
iris [78.8K]

Answer:

110

Step-by-step explanation:

Parallel lines, forgot the rule name but:

180-70 = 110

3 0
3 years ago
Read 2 more answers
Other questions:
  • A rectangular prism shaped fish tank is 14 in tall the perimeter of the base is 96 in the length of the base is 3 times the widt
    15·1 answer
  • Most analysts focus on the cost of tuition as the way to measure the cost of a college education. But incidentals, such as textb
    14·1 answer
  • a population of rabbits triples every month. the population starts with two rabbits.how many rabbits are there after 3 months?
    14·2 answers
  • Two students, Stephanie and Maria, want to find out who has the higher GPA when compared to each of their schools. Stephanie has
    8·2 answers
  • Please help me finish this problem of pythagorean theorem model.​
    5·1 answer
  • If DJL = EGS, which segment in EGS corresponds to DL?
    15·1 answer
  • Write <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B22%20%7D%7B4%7D%20" id="TexFormula1" title=" \frac{22 }{4} " alt=" \fra
    13·2 answers
  • Use the line tool and select two points to graph the line
    6·1 answer
  • Whatss the Median??????????????????????///
    14·1 answer
  • Mental math to find 420 - 177
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!