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
CaHeK987 [17]
4 years ago
10

Evaluate 4xy+7y-9x+21-3x^2 when x=2 and y=-1 pour answer​

Mathematics
1 answer:
navik [9.2K]4 years ago
6 0

Answer:

-24?

Step-by-step explanation:

4xy + 7y - 9x + 21 - 3x^2

4(2)(-1) + 7(-1) - 9(2) + 21 - 3(2)^2

-8 - 7 - 18 + 21 - 12

- 24

You might be interested in
Which table represents the equation y = -2x + 17?
Alexeev081 [22]
<h3>Answer: Choice A</h3>

Explanation:

Each table has x = 10 in it. Plug this value into the given equation.

y = -2x+17

y = -2*10+17

y = -20+17

y = -3

The input x = 10 leads to the output y = -3. Table A shows this in the middle-most row. So that's why choice A is the answer. The other tables have x = 10 lead to y values that aren't -3 (eg: choice D has x = 10 lead to y = 12), so we can rule them out.

7 0
3 years ago
Estimate -9 1/6 + 2 1/3 + (-1 7/8) I have more questions so if you want more just simply ask.
BigorU [14]

-8.70833333333 about but you can round to the nearest tenth (-8.7) or nearest whole number (-9)

4 0
4 years ago
Which of the following square root of -80
Marta_Voda [28]

You can factor -80 as

-80 = (-1)\cdot 16 \cdot 5

So, we have

\sqrt{-80} = \sqrt{(-1)\cdot 16 \cdot 5}

The square root of a product is the product of the square roots:

\sqrt{-80} = \sqrt{(-1)}\sqrt{16}\sqrt{5}

Since i^2=-1 and 4^2=16, we have

\sqrt{-80} = 4i\sqrt{5}

8 0
3 years ago
ANSWER QUICKLY, ASSIGNMENT DUE AT 11:59! WORTH 100 POINTS
Brut [27]

f(2) is greater than g(2) and f(-2) is less than g(-2)

6 0
3 years ago
A group of teens were surveyed about whether they prefer to read books or listen to music. A 3-column table with 3 rows. Column
Ostrovityanka [42]

Answer:

B, D

Step-by-step explanation:

on Edge :)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Mary,Tom,Sophia &amp; Isaac share minutes on their cell phone plan. Mary used 1/4 of the minutes,Tom used 0.5 of the minutes,and
    12·1 answer
  • Plsss help me i need the grade ur a life saver and I love u sooo much
    15·2 answers
  • Discover and write an expression to find the nth term in the arithmetic sequence
    14·1 answer
  • There were 32 adults and 4 children in line at the movie theater. How many times more adults were in the line than children?
    6·2 answers
  • 3 lines are shown. A line with points P, R, N intersects a line with points O, R, M at point R. A line extends from point R to p
    16·2 answers
  • What is the volume of the cylinder?
    10·1 answer
  • A withdrawal of 225 what is the integer
    5·1 answer
  • Which expression will give a <br> product of 14/9
    11·1 answer
  • Given g(x) = 3x + 14 , find x if g(x) = 20
    7·1 answer
  • 70+2e+3e=180° answere me ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!