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fomenos
3 years ago
15

What is this? anyone help​

Mathematics
1 answer:
qwelly [4]3 years ago
4 0

Answer:

-a^2 -a -35

Step-by-step explanation:

a(4-a) -5(a+7)

Distribute

4a -a^2 -5a-35

Combine like terms

-a^2+4a -5a-35

-a^2 -a -35

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PLS HELP THIS IS DUE TODAY
Anastasy [175]

Answer:

Draw a C plane and plot the dots if the coordinates

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3 years ago
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Karin has 461 songs downloaded joe has 123 more songs downloaded than Karin let s=the number of songs joe downloaded
Paul [167]

Answer:

s=461+123

Step-by-step explanation:

123 more is +125, and that's how many songs Joe, s, has.

4 0
3 years ago
a carpenter is cutting dowels from a piece of wood that is 10 inches long. how many 1/2 dowels can the carpenter cut?
Tasya [4]
The wood is 10 inches and you're cutting it into 1/2 pieces, so divide 10 by 1/2, which is 20, The carpenter can cut 20 dowels.
3 0
3 years ago
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The width of a rectangle is six meters less than three times its length. If the area of the rectangle is 105 square meters. what
Kipish [7]

Answer:

length = 7 meters

Step-by-step explanation:

l = length

w = width

w = 3×l - 6

l×w = 105 m²

l×(3×l - 6) = 105

3×l² - 6×l = 105

l² - 2×l = 35

l² - 2×l - 35 = 0

solution of a squared equation is

(-b ± sqrt(b² - 4ac))/(2a)

a = 1

b = -2

c = -35

(2 ± sqrt(4 - 4×-35))/2 = (2 ± sqrt(4+140))/2 =

(2 ± sqrt(144))/2 = (2 ± 12)/2 = 1 ± 6

l1 = 1+6 = 7 meters

l2 = 1-6 = -5 meters, which did not make any sense for an actual object.

so, l = 7 meters remains.

7 0
3 years ago
I think of a number, add on 7 and then double it. My answer is 8 whats the answer​
dimulka [17.4K]

Answer:

-3

Step-by-step explanation:

8/2

4

4-7

-3

3 0
2 years ago
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