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2 years ago

(-18)+(-7)+25 my answer was 36 but i just want to confirm

Mathematics

1 answer:

jeka942 years ago

7 0

Answer:

Step-by-step explanation:

Note that + (- 7) = - 7 , thus

- 18 + (- 7) + 25 = - 18 - 7 + 25 = - 25 + 25 = 0

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2y-8+4y what is equal to this please help thanks

Nitella [24]

Answer:

$6y - 8$

$2(3y - 4)$

Step-by-step explanation:

The given expresion is 2y-8+4y.

We want to find an expression that is equal to 2y-8+4y.

We need to group like terms to obtain:

$2y + 4y - 8$

We can now combine the like terms to get:

$2y + 4y - 8$

$6y - 8$

We can factor 2 to obtain:

$2(3y - 4)$

8 0

3 years ago

A rectangle has a height of 3n^2 and a width of 4n^2-5n-1.

Galina-37 [17]

Answer:

$A = 12n^4-15n^3-3n^2$

Step-by-step explanation:

The dimensions of a rectangle are length and breadth/width

Here we are given height . Assuming it to be one of the side of the rectangle , we will do the further calculation

Hence one side is

side 1 = $3n^2$

And the other side is

Side 2 = $4n^2-5n-1$

The area of rectangle = side 1 x side 2

$A=3n^2 \times (4n^2-5n-1)$

$A=3n^2 \times 4n^2-3n^2 \times 5n-3n^2 \times 1$

$A=3 \times 4 \times n^2 \times n^2- 3 \times 5 \times n^2 \times n - 3n^2$

$A = 12n^4-15n^3-3n^2$

Hence area can be given as expression

$A = 12n^4-15n^3-3n^2$

5 0

3 years ago

Combine the like terms to simplify the expression: 9+3+17xy(2)+8y(3)+10x –13xy(2) – 9x – 6y(3)

seraphim [82]

9 + 3 + 17xy² + 8y³ + 10x - 13xy² - 9x - 6y³
12 + 17xy² + 8y³ + 10x - 13xy² - 9x - 6y³
17xy² - 13xy² + 10x - 9x + 8y³ - 6y³ + 12
4xy² + x + 2y³ + 12

The answer is A.

7 0

2 years ago

Write two division expressions that have the same value as 36.8 divided by 2.3 (16)

yarga [219]

64 divided by 4=16

144 divided by 9=16

7 0

3 years ago

Olivia is going to an amusement park. The price of admission into the park is $40, and once she is inside the park, she will hav

svetoff [14.1K]

Answer:

Cost for 13 rides: $92

Cost for r rides: I am guessing it would be 40+4r

Step-by-step explanation:

If you automatically pay 40 dollars to get in, then that is the constant, and paying 4 dollars per ride is a coefficient, so that would be multiplied by how many rides you go on, the variable. Once you plug those into the equation above, you would get 92 dollars for the thirteen rides.

5 0

3 years ago

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