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Gnom [1K]
2 years ago
13

During science class, Jack, Jeff, and Jill measure the length of their bean sprouts. Jeff’s sprout is 0.9 times the length of Ja

ck’s, and Jill’s is 1.08 times the length of Jack’s. Whose bean sprout is the longest?Why?
Mathematics
1 answer:
yKpoI14uk [10]2 years ago
8 0

Answer:

Jill's is the longest.

if jeffs is 0.9 times the length of jacks, his is lesser than jacks. e.g. 2×0.9=1.8. Jeff's will always be shorter. since we know Jacks is over 1, Jill's will always be taller because 2×1.08=2.16 or Jill's length.

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What’s number 1? Please help
Viktor [21]

Answer:

  1. Line XY is a line
  2. Distance XY is the length between the two letters.

Step-by-step explanation:

  1. When there's a line over two letters, that is a line.
  2. When there's nothing above the two letters. it is the length between the two points on the line.

Be very careful with these two meanings.

6 0
3 years ago
A plane flying at a certain altitude is observed from two points that are 2.2 meters apart. The angles of elevation made by the
lana [24]
tan(72)= \frac{y}{x}  ; tan(55)= \frac{y}{2.2 + x}
y=xtan(72);y=(2.2+x)tan(55)
So we are to merge the two equations into one, since both of the equations are equal to y. a = b, b = c therefore, a = c.
xtan(72)=2.2tan(55)+xtan(55)
We are to isolate x.
x[tan(72)-tan(55)]=2.2tan(55)
x=\frac{2.2tan(55)}{tan(72)-tan(55)}
The value of x is approximately, 1.9047m
Then, substitute the value of x from y=xtan(72)
y=1.9047tan(72)
y = 5.862m
Round up, then the answer would be D.

7 0
3 years ago
A store is having 10% off all pairs of shoes do you want a pair of shoes that normally cost $75 what is the sale price of the pa
monitta

Answer:

You pay 67.5 for the shoes.

Step-by-step explanation:

10% of 75 is 7.5.

75 - 7.5 = 67.5

Please Mark Brainliest!

5 0
2 years ago
Read 2 more answers
The net of a square pyramid and its dimensions are shown in the diagram.
nikitadnepr [17]

Answer:

The total surface area is 336ft2

Step-by-step explanation:

solution:

total suface area of the pyramid

=area of base square +(12)2 = 4 (1/2 x 12 x 8)

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4 0
3 years ago
Find the product. (a2)(2a3)(a2 – 8a + 9) 2a7 – 16a6 + 18a5 2a7 – 16a6 – 18a5 2a8 – 16a7 + 18a6 2a12 – 16a7 + 18a6
Alexandra [31]

Answer:

2a^{7} - 16a^{6} + 18a^{5}

Step-by-step explanation:

Given

(a²)(2a³)(a² - 8a + 9) ← multiply the first 2 factors

= 2a^{5} (a² - 8a + 9) ← distribute the parenthesis by 2a^{5}

= 2a^{7} - 16a^{6} + 18a^{5}

3 0
3 years ago
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