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ExtremeBDS [4]
3 years ago
15

I need help with these

Mathematics
1 answer:
NISA [10]3 years ago
4 0
It can be written as (15+2)x
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the length of a rectangular garden is 3 m greater than the width. The area of the garden is 70m squared. find the dimensions of
Lerok [7]
A = l x w

so you know that the length is 3m longer than the width, so you could use a formula to represent that

w = l + 3

you then substitute the second equation into the first to solve for l

70 = l x (l +3)
70 = l^2 + 3l

you could then rearrange the formula and solve for l using the quadratic formula 

0 = l^2 + 3l - 70

l = -3 +- (square root (3)^2 - 4(1)(70)) / 2(1)
l = -3 +- (square root 9 + 280) / 2
l = -3 +- (square root 289) / 2
l = -3 +- 17 / 2

then you solve for the two seperate roots

l = -3 + 17 /2
l = 14 / 2
l = 7

or 

l = -3 - 17 / 2
l = -20 / 2
l = -10

since a length cannot be negative, this root is not viable. therefore l = 7

to solve for w you would use

w = l + 3
w = 7 + 3
w = 10 

hope this helps! if you did not understand a step or concept please let me know!
4 0
3 years ago
K'Drien has a recipe that needs 3/4 tablespoon of butter for every 2
Orlov [11]

Answer:

6/4. Simplified, is 1 2/4

Step-by-step explanation:

4 0
2 years ago
Please could someone help me?
ad-work [718]

Answer:

C

Step-by-step explanation:  6  23  17  16

15 is the highest value

5 0
2 years ago
Read 2 more answers
Which number is a factor of 100?<br> 8<br> 12<br> 15<br> 20
vova2212 [387]

Answer:

20

Step-by-step explanation:

Divisors of 100

1, 2, 4, 5, 10, 20, 25, 50, 100

7 0
3 years ago
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The point (8,-4) is shown,which is the location of (8,-4 <br> A. Q<br> B. R <br> C. S<br> D. T
Setler [38]

Answer:

S

Step-by-step explanation:

Can't really explain

7 0
3 years ago
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