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
kakasveta [241]
4 years ago
10

If x=3 and y=-2 then x2 - xy x²+2y

Mathematics
2 answers:
laila [671]4 years ago
7 0

Answer:

2.4

Step-by-step explanation:

x = 3, y = -2

x2 - xy/x² + 2y

=x2 - xy

=(3)2 - 3 × (-2)

6 - (-6)

= 12

x² + 2y

= 3² + 2(-2)

= 9 + -4

= 5

12/5

= 2.4

Naddika [18.5K]4 years ago
4 0

Answer:

Step-by-step explanation:

(3)*2=6

-

(3)*(-2)=-6

6-(-6)=12

3*3=9

+2(-2)=-4

9+ -4= 5

You might be interested in
To make four cakes, Dena used 6 cups of sugar. Using the same recipe, how much sugar does she need to make one cake?​
Fantom [35]
1.5 cups per cup. cups/cake
6 cups/ 4 cakes
= 1.5 cups per cake
5 0
3 years ago
Read 2 more answers
The length of a rectangle is 3 more than the width. If the perimeter of the rectangle is 16 units, find the
pentagon [3]
L = 3x width
2L + 2W = 16 units
2(3W) + 2W = 16 units
8W = 16 units
Width = 2 units
7 0
3 years ago
The world famous gambler from Philadelphia, Senor Rick, proposes the following game of chance. You roll a fair die. If you roll
Orlov [11]

Answer:

You lose $0.833 while Rick gains $0.833, and so Rick is not Loco

Step-by-step explanation:

There are six numbers on a dice. Thus, probability of rolling exactly one number = 1/6

Probability of rolling two is 2/6.

Rolling a 1 pays $25, and probability = 1/6

Rolling a 2 pays $5,and probability = 1/6

Rolling a 3 pays $0, and probability = 1/6

Rolling a 4 or 5 pays -$10, and probability = 2/6

Rolling a 6 pays -$15, and probability = 1/6

Thus,lets calculate the expected value;

EV = (25 × 1/6) + (5 × 1/6) + (0 × 1/6) + (-10 × 2/6) + (-15 × 1/6)

EV = - $0.833

This means you lose $0.833 while Rick gains $0.833, and so Rick is not Loco.

7 0
3 years ago
Jenna wants to build 8 birdhouses. She needs 2 3/5 square feet of plywood for each birdhouse. If the plywood costs $0.56 per squ
goldenfox [79]

Answer:

$11.76

Step-by-step explanation:

We first need to find the amount of plywood for all birdhouses.

2 3/5 * 8 = 104/5 or 20.8 or 20 4/5

Now we can solve the cost for all the birdhouses by multiplying the total amount of plywood needed by the price per square foot.

20.8 * 0.56 = $11.648 or estimated $11.65

Remember, the question might be different, so don't submit anything yet. If the people who sell the plywood only sell in integer numbers (meaning you can't buy 4/5 of a square foot of wood but can only by amounts with no fractions), then Jenna must buy 21 square feet of plywood and will have a little bit of wood left over. Now solve just like before.

21 * 0.56 = $11.76

Therefore the answer is $11.76 if she can only buy an integer amount of plywood or estimated $11.65. I think the best answer is 11.76.

3 0
3 years ago
2: how many years are in 210 months? Show work.
-BARSIC- [3]
2: 17.5 years. Work; 12 months in one year, 210 months divided by 12 months= 17.5 years.
5 0
3 years ago
Other questions:
  • In a class, 12 out of 25 students are female. what percent of students are female?
    9·1 answer
  • Both of these please theyre simple i just dont know how
    10·1 answer
  • Luna observed that in the last 12 issues of "Rise Over Run Weekly," 384 of the 960 pages contained an advertisement.
    15·2 answers
  • A truck driver drove 120 miles in 1 3/4 hours. What is the speed of the truck in miles per hour
    9·1 answer
  • A car traveled 130 miles in 2 hours. How fast did the car travel?
    8·2 answers
  • Charlotte is running at a rate of 9 (km)/(h) what is charlotte speed in (m)/(s)
    13·2 answers
  • Dani's estimate for the cost of tiling her bathroom floor is $50 plus $3 per square foot. She says that she can model the cost w
    15·2 answers
  • Does it have a solution?
    12·1 answer
  • Please choose how many solutions there are to this system:
    12·1 answer
  • What is 5/7 times 100
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!