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almond37 [142]
3 years ago
7

Expand and simplify (x + 5)(x + 4)​

Mathematics
2 answers:
Nina [5.8K]3 years ago
7 0

Answer:

(x+5)⋅(x+4)= x2+9x+20

Step-by-step explanation:

(x+5)(x+4)

=x

2

+4x+5x+20=

=x

2

+9x+20

blondinia [14]3 years ago
5 0

Step-by-step explanation:

(x+5)(x+4)

x(x+4)+5(x+4)

x(x+4)+5(x+4)

x2 +4x+5(x+4)

x2+4x+5(x+4)

x2+4x+5x+20

x2+4x+5x+20

x2+9x+20

solution

x2+9x+20

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Does the table of values below represent a proportional relationship?
ladessa [460]

Answer:

No

Step-by-step explanation:

The constant of proportionality is k = y/x. In this case, k is 5. When you multiply k which is 5 with the x value you should get the y value. You will see that 2 X 5  = 10, 3 X 5 = 15, and 5 X 5  = 25 but 4X 5 is not equal to 24. This means the ordered pair (4, 24) does not lie on the straight line that is formed where all the other ordered pairs (2,10), (3,15), and (5,25) lie.

For a proportional relationship in a table, the k is constant for all the ordered pair x and y values. All the ordered pairs in the table should also lie on the same straight line.

So the answer is no.

5 0
2 years ago
A shelf of books at the library can hold 60.5 pounds of books.
KengaRu [80]
Atleast 302.5 can fit on the shelves

3 0
3 years ago
Read 2 more answers
The length of a rectangle is four times the width minus three. If the perimeter of the rectangle is 64 meters, what is the lengt
Nastasia [14]

Answer:

L = 25 m

Step-by-step explanation:

L = 4W - 3

perimeter = 2(L + W)

64 = 2(4W - 3 + W)

divide both sides by 2:

32 = 5W - 3

add 3 to each side:

5W = 35

divide both sides by 5:

W =7

L = 4(7) - 3 = 25

6 0
3 years ago
Please answer the image below
nikklg [1K]

Answer:

<h2>301.593</h2><h2 />

Step-by-step explanation:

surface area = 2πrh + 2πr²

where r = 4 km radius

           h = 8 km

<u>plugin values into the formula</u>

surface area = 2πrh + 2πr²

                     = 2π (4) 8  +  2π (4)²

                     = 201.062  +  100.531

                     = 301.593 km²

7 0
3 years ago
Farmer brown picked some oranges ,he gave 3/8 to John and 2/3 of the remainder to steve if steve received 75 oranges how many or
Wittaler [7]
We know that 75 equals 2/3 of the remainder
which means 1/3 of the remainder is equal to 75/2 (37.5)
if 1/3 equals 37.5 then 3/3 (or all of the remainder) is equal to 3*37.5 (112.5)
We know that the remainder equals 5/8 of the oranges since
8/8-3/8= 5/8
We know that 112.5= 5/8, which mean 1/8 is equal to 112.5/5 (22.5) and that 8/8 or the total number of oranger equals 22.5*8 (180)

RESULT:
180 oranges

3 0
3 years ago
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