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sp2606 [1]
4 years ago
10

Did I do this right? #15 ?

Mathematics
1 answer:
Lelu [443]4 years ago
6 0

Answer:

No you didn't the answer is -6x squared + 15x

Step-by-step explanation:

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7 0
2 years ago
A polyhedron with two parallel congruent faces called bases connected by parallelogram faces is called a...
lisov135 [29]

Answer:

right prism

Step-by-step explanation:

If the faces are rectangles, then this prism is called a "right prism"

4 0
3 years ago
Find the surface area of a pyramid with a square base with dimensions 100 mm by 100 mm and height of 75 mm.
Reil [10]

To solve for the surface area of the pyramid, we make use of the formula:

A= l w + l [sqrt ((w / 2)^2 + h^2)] + w [sqrt ((l / 2)^2 + h^2))

where,

l and w are the base of the pyramid = 100 mm

h is the height of the pyramid = 75 mm

 

Substituting the given values into the equation:

A= 100 * 100 + 100 [sqrt ((100 / 2)^2 + 75^2)] + 100 [sqrt ((100 / 2)^2 + 75^2))

A = 10,000 + 100 (sqrt 2575) + 100 (sqrt 2575)

A = 20,148.90 mm^2

 

Therefore the surface area of the pyramid is about 20,149 mm^2.

8 0
3 years ago
What is the product of (-4)(7) and why?
Mumz [18]

Answer:

The product of (-4)(7) is -28 because you are removing 4 times, the number 7

.

Reason is below.

Step-by-step explanation:

The number which is written first in the multiplication or the product is always multiplied by the second number.

For example

3 × 2 implies three times two which equal to 6

2 × 3 implies two times three which is also equal to 6

Therefore the number written in the first is count as times, the number second.

For example

-3 × 2 implies three times two which equal to -6

Here the product is negative 6

Because if a negative number is multiplied by positive number you will always get the product as negative number.

If a positive numbers multiplied by positive number you will always get the product as a positive number.

For example

3 × 2 implies three times two which equal to 6

If a positive numbers multiplied by negative number you will always get the perfect as a negative number.

For example

3 × -2 implies three times two which equal to -6

If a negative number is multiplied by negative number you will always get the product as a positive number.

For example

-3 × -2 implies three times two which equal to 6

Therefore, the product of (-4)(7) is -28 because you are removing 4 times, the number 7

7 0
4 years ago
How do you factor the coefficient of 3/8d+3/4?
nevsk [136]
Actually you have 2 coefficients here:  3/8 and 3/4.

(3/8)d + (3/4) is the same as (3/8)d + (2)(3/8), so this can be factored into

(3/8) [ d + 2 ]
6 0
4 years ago
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