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Nastasia [14]
3 years ago
11

If x = 2 and y = -3, what is the value of 2x^2−3xy−2y^2 HELPPP

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
8 0

Answer:

8

Step-by-step explanation:

2(2)^2‒3(2*‒3)‒2(‒3)^2

2*4‒3(‒6)‒2(9)

8‒(‒18)‒18

8+18‒18

26‒18

8

i think it is easy to understand &i hope it will helps you

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Apply the distributive property to factor out the greatest common factor. 56+32
Scorpion4ik [409]

You can't because there is no other number that is 1. in () and 2. You need 3 or more number to actually "distribute" it

Hope that Helps! Please let me know if it didn't

7 0
4 years ago
If w,x,y,z is a square find each angle
Sergio [31]

Answer:

Each angle measures 90 degrees.

Step-by-step explanation:

By definition, in a square, each angle measure is 90 degrees, and all side lengths are equal lengths.

I hope this helps!

4 0
2 years ago
What do I do steps? please help
skad [1K]
Area = Length x Width

so, 88 = (something) x 8
Can you work out the something using mental math?
8 0
3 years ago
A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the
mihalych1998 [28]
We can let x be the number of boxes sold for the first week. We can as well express the number of boxes for the second and third week through x using the statements provided.

Since the girl scout sold 5 more boxes on the second week, we have (x + 5) number of boxes sold for the second week. Now, for the third week, since it's double that of the second week, we have 2(x + 5). Thus, we have the following:

first week: x
second week: x + 5
third week: 2(x + 5)

Given that the total number of boxes sold for the three weeks is 431. We have

x + (x + 5) + 2(x + 5) = 431
x + x + 5 + 2x + 10 = 431
4x + 15 = 431
4x = 431 - 15
4x = 416
x = 104

We have now the value of x. Using this, we can find the values for the second and third week.
x + 5 = `104 + 5 = 109
2(x + 5) = 2(109) = 218

Answer: 
first week: 104
second week: 109
third week: 218



5 0
3 years ago
A teacher must grade 32 reports. She can grade 4 reports in 90 minutes. How many hours will it take to grade 32 reports?
Nataly_w [17]

Answer:

The teacher will take 720 minutes or 12 hours to grade 32 reports.

Step-by-step explanation:

32 reports= x

4 reports= 90 minutes

Cross multiply method

90*32= 4x

2880= 4x

x= 720

The teacher will take 720 minutes or 12 hours to grade 32 reports.

Hope this helps!

4 0
3 years ago
Read 2 more answers
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