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
balu736 [363]
2 years ago
9

Simplify: (-7x + 5) - (2x2 – 8x + 6). Choose the standard form of the answer.

Mathematics
1 answer:
Tcecarenko [31]2 years ago
3 0

Answer:

A.-2x2+-1

Step-by-step explanation:

(-7x+5)-(2x2-8x+6)

-7x+5-2x2+8x-6 then collect like terms

-2x2-7x+8x+5-6

-2x2-x+1

If it's helpful ❤❤❤

THANK YOU

You might be interested in
What’s the probability of drawing one blue marble from a bag which contains 4 red marbles , 6 green marbles , 1 white marble and
Gemiola [76]

Answer:3/14

Step-by-step explanation:

The probability that it is a blue marble is 3 out of total marbles of 14

8 0
3 years ago
Find, correct to the nearest degree, the three angles of the triangle with the given vertices.
Leokris [45]

Answer:

angle CAB = 113.8 degree

angle ABC = 35.6 degree

angle BCA = 30.6 degree

Step-by-step explanation:

Given data:

A(1, 0, −1),

B(5, −3, 0),

C(1, 5, 2)

calculate the length of side by using the distance formula

so

AB = (5,-3,0) - (1,0,-1) = (4,-3,1)

AC= (1,5,2) - (1,0,-1) = (0,5,3)

|AB|

|AC| =\sqrt {(0 + 5^2+3^2)} = \sqrt{34}

From following formula, calculate the angle between the two side i.e Ab and AC

AB.AC = |AB|*|AC| cos ∠CAB

(4,-3,1).(0,5,3)

4*0 -3*5 +1*3

-12 =

cos ∠CAB = - 0.404

angle CAB = 113.8 degree

BA =B- A =  (1,0,-1) - (5,-3,0) = (-4,3,-1)

BC = (1,5,2)-(5,-3,0) = (-4,8,2)

|BA| = \sqrt{(26)}

|BC| = \sqrt {(4^2 + 8^2 + 2^2)} = \sqrt{(84)}

BA.BC = |BA|*|BC|* cosABC

(-4,3,-1).(-4,8,2) =\sqrt{(26)} * \sqrt{(84)} *cosABC

16+24-2

cos ∠ABC = 0.813

angle ABC = 35.6 degree

we know sum of three angle in a traingle is 180 degree hence

sum of all three angle = 180

angle BCA + 35.6 + 113.8 = 180

angle BCA = 30.6 degree

7 0
3 years ago
Test your PEMDAS<br><br> 6+8/2(2+2)<br><br> This one is tricky
Ivanshal [37]
Do parenthesis first (4)
Then, do the division 8/2 = 4
Then multiply 4 and 4 which will be 16
Add 6 to 16 and you get 22
7 0
3 years ago
A motor boat travels 60 miles down a river in 3 hours but takes 5 hours to return upstream. Find the rate of the boat in still w
prohojiy [21]

Step-by-step explanation:

Given that,

A motor boat travels 60 miles down a river in 3 hours but takes 5 hours to return upstream,

We know that,

Speed = distance/time

The rate while moving downstream=\dfrac{60}{3}=20\ mph

The rate while moving upstream =\dfrac{60}{5}=12\ mph

The rate of the boat in still water is the average of these:

v_s=\dfrac{20+12}{2}=16\ mph

The rate of the current is the difference between the boat speed and actual speed = 16 mph - 12 mph = 4 mph

Hence, this is the required solution.

7 0
3 years ago
Which of the following proves these triangles are congruent
musickatia [10]

Answer:

ASA

Step-by-step explanation:

ASA rule states that: If two angles and a non-included side of one triangle are equal to two angles and a non-included side of another triangle, then the triangles are congruent.

4 0
2 years ago
Read 2 more answers
Other questions:
  • A radio active isotope decays according to the exponential decay equation where t is in days. Round to the thousandths place. Fo
    6·1 answer
  • Jefferson High School has a student body of 6⁴ students. Each class has approximately 6² students. How many classes does the sch
    6·1 answer
  • Which of the following stocks had the highest trading price at the end of the day A.eBay. B.Netflix. C.Google. D.Apple
    5·2 answers
  • The length of a rectangle is twice its width and the area is equal to the area
    14·2 answers
  • what is the probability of randomly choosing a penny and a nickel from a cup of coins that contains a penny nickel a dime and a
    12·1 answer
  • F(-7) if f(x) = 8x + 15
    10·2 answers
  • Idk this pls help don’t understand.
    13·1 answer
  • Which unit would you use to measure the weight of a car <br> A. mg <br> B. kg <br> C. g<br> D. km
    7·2 answers
  • I HAVE 15 MINUTES OFFERING ALL MY POINTS<br> Find the value of x and y
    15·2 answers
  • PLEASE HELP OMGGGGGG TYSMM
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!