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Travka [436]
3 years ago
5

Find the missing coefficent. (5d - 7)(5d - 6) = 25d2 + d + 42

Mathematics
2 answers:
Tcecarenko [31]3 years ago
5 0
25d^2-30d-35d+42=25d^2-65d+42.
rosijanka [135]3 years ago
4 0
Its -5 hope this helpssss

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The length of a rectangle is 4cm less than twice it’s width the perimeter of the rectangle is 34cm. What are the Demensions of t
serg [7]

Answer:

w=7 and l=10

Step-by-step explanation:

To find the dimensions, create an equation for its perimeter and solve. Recall, the perimeter formula for a rectangle is P = 2l+2w. P is 34 cm. L is 4cm less than twice the width or 2w-4. And the width is w.

P = 2l+2w

34 = 2(2w-4) + 2w

34 = 4w -8 +2w

34 = 6w -8

34+8 = 6w

42 = 6w

7=w

The width is 7 cm. To find the length substitute w=7 into l=2w-4.

l=2w-4

l=2(7)-4

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3 years ago
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10 fifths

Step-by-step explanation:

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3 years ago
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3 years ago
1. Which of the following linear equations has
Anon25 [30]
General equation: y = mx + c
where m is the slope.
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3 years ago
Sammy Sales had the following receipts for his tree trimming business for the first six months of the year. What is the average
fredd [130]

average =  \frac{sum \:  \: of \:  \:all \:  \:  obeservations}{no. \:  \: of \: observaions}

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=  1526.66

___________________________________________

1526.66 is the average of his sales for this period.

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3 years ago
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