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3 years ago

Please help me with this2x^2+3x+x^2-x+4

Mathematics

1 answer:

Sedaia [141]3 years ago

6 0

I’m pretty sure that it would be 3x^2+2x+4

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Adding Monomials: <br> Need some Help please ?

AleksAgata [21]

Just add the numbers if the letters are the same only I multiplying do you add the exponents

Answer 14 b^5

4 0

3 years ago

Whats v = r + at solve for a

Alecsey [184]

Answer:

v - r

------ = a

Step-by-step explanation:

Starting with v = r + at, subtract r from both sides, so as to isolate the 'at' term:

v - r = r - r + at, or

v - r = at

Next, divide both sides by t, to isolate a:

v - r

------ = a

6 0

4 years ago

Mandy is selling pancakes and waffles at her diner. On Monday she sold a total of 300 pancakes and waffles. If she charges $3 pe

elena-s [515]

Answer:

Mandy sold 250 pancakes and 50 waffles.

Step-by-step explanation:

From the information given, you can say that the sum of pancakes and waffles is equal to 300:

x+y=300

Also, the statement indicates that she charges $3 per pancake, $1 per waffle, and made a total of $800 and you can express this as:

3x+y=800

You have the following equations:

x+y=300 (1)

3x+y=800 (2), where:

x is the number of pancakes she sold

y is the number of waffles she sold

Now, you can solve for x in (1):

x=300-y (3)

Then, you can replace (3) in (2):

3(300-y)+y=800

900-3y+y=800

900-800=2y

100=2y

y=100/2

y=50

Finally, you can replace the value of y in (3) to find x:

x=300-50

x=250

According to this, the answer is that Mandy sold 250 pancakes and 50 waffles.

5 0

3 years ago

What is 3/4+1 2/3+1/2=

kifflom [539]

35/12 is the correct answer

4 0

2 years ago

Read 2 more answers

Please help, 20 points.<br> Perimeter :)

djyliett [7]

Answer:

Step-by-step explanation:

<em>Look at the picture.</em>

The dimensions of the picture:

(42 - 2x)in × (32 -2x)in

The formula of an area of a rectangle:

A = l · w

l - length, w - width

Substitute l = (42 - 2x), w = (32 - 2x) and A = 900

(42 - 2x)(32 - 2x) = 900

8 0

3 years ago

Please help me with this2x^2+3x+x^2-x+4​

Please help me with this2x^2+3x+x^2-x+4