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Sedbober [7]
3 years ago
7

Find the sum of

Mathematics
1 answer:
Bad White [126]3 years ago
5 0

Answer:

Step-by-step explanation:

(2x^2-x)+(x^2+3x-1)

2x^2-x+x^2+3x-1

x^2+3x-1

5x^2+2x-1+(4x^2-x+2)

5x^2+2x-1+4x^2+x-2

9x^2+6x-3

(3x^2+2x+1)+(x^2-1)

3x^2+2x+1+x^2-1

4x^2+2x

-x^2-1+(4x^2-x)

-x^2-1+4x^2-x

3x^2-1-x

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If two angles do not form a linear pair, then they are not adjacent angles. true or false?
Likurg_2 [28]

Answer:

true

Step-by-step explanation:

3 0
3 years ago
Solve the system using elimination,<br> 2x - 3y = - 19<br> 7x + 7y = 21
blagie [28]

Answer:

x = -2

y = 5

Step-by-step explanation:

2x - 3y = -19  ---------------------------(I)

7x+ 7y = 21  -----------------------------(II)

Multiply equation (I) by 7 and equation (II) by 3.Then add and so y will be eliminated and you will get the value of x

(I)*7              14x - 21y = - 133

(II)* 3           <u> 21x + 21y = 63  </u>        {Now add}

                   35x          = -70

                                x = -70/35

x = - 2

Plug in x = - 2 in equation (I)

2*(-2) - 3y = -19

-4 -  3y  = -19

     -3y = -19 + 4

     -3y = -15

         y = -15/-3

y = 5

8 0
3 years ago
A washer and dryer cost a total of $964 . The cost of the washer is three times the cost of the dryer. Find the cost of each ite
Sophie [7]

Answer:

A washer and dryer cost a total of $964 . The cost of the washer is three times the cost of the dryer. Find the cost of each item.

Answer: 96$

3 0
3 years ago
Read 2 more answers
If i go to the grocrey store and back and thats 3.6 miles how far do i live from the store
prisoha [69]

Answer:

Your answer would be 1.8 miles.

Step-by-step explanation:

3.6 divided by 2 is 1.8

3 0
3 years ago
Read 2 more answers
Will Mark Brainliest!! Please help ASAP!
Ira Lisetskai [31]

After 30 minutes from the time recipe is kept in the oven, then the temperature of the oven is kept at 350 °F.

<h3>What is a function?</h3>

The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.

A pumpkin pie recipe says to bake the pie at 425°F for 15 minutes, and then to adjust the temperature down to 350°F for 45 additional minutes.

The function P(t) gives the oven temperature setting t, in degrees Fahrenheit, t minutes after the pie is placed in the oven.

Diego discovers that the temperature inside the oven is always 25 degrees warmer than the oven’s temperature setting.

The function B gives the actual temperature of Diego’s oven.

If P(30) = 350. Then the corresponding point on the function B will be

The temperature function can be written as

P(t)=\begin{Bmatrix}425 & 0\leq t\leq 15 \\\\350 & 15 < t\leq 60 \\\end{Bmatrix}

The value of t = 30 lies in the interval of 15 < t ≤ 60.

After 30 minutes from the time recipe is kept in the oven, then the temperature of the oven is kept at 350 °F.

More about the function link is given below.

brainly.com/question/5245372

#SPJ1

8 0
2 years ago
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