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Marrrta [24]
3 years ago
11

Help me please someone

Mathematics
1 answer:
UNO [17]3 years ago
4 0
I think it might be B sorry
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Which fraction,in simplest form,is equivalent to 0.56,and the equivalent percent of 0.56 ? why
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0.56 14/25

Step-by-step explanation:

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What is the circumference of a circle with a diameter of 72 millimeters?
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72×3.14=226.08 millimeters
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Which of these data sets could best be displayed on a dot plot
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2 years ago
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Standing 140 feet from the base of a tree, Alejandro uses his clinometer to site the top of the tree. The reading on his clinome
Advocard [28]

Answer:

132 feet

Step-by-step explanation:

Given that Alejandro is standing at a distance of 140 feet from the base of the tree and his eyes are 6 feet above the ground.

Let AB is the height of the tree and point E is the location of his eyes which is 6 feet above from C on the ground as shown in the figure.

The distance between points A and C, AC=140 feet.

Drawing a horizontal line from point E which meets AB at point D as shown.

As ACED forms a rectangle, so

AC=DE=140 feet ...(i)

CE=AD= 6 feet ...(ii)

The height of the tree, AB=AD+DB

By using equation (ii),  AB=6+DB ...(iii)

Now, given that the on watching the top of the tree, the reading on the clinometer is 42 degrees.

So,\angle DEB = 42^{\circ}

In triangle DEB,

\tan 42^{\circ} = \frac {DB}{DE} \\\\\Rightarrow DB = DE \times \tan 42^{\circ} \\\\

\Rightarrow DB = 140 \times \tan 42^{\circ} [from (i)]

\Rightarrow DB = 126 feet

From equation (iii) the height of the tree is

AB=6+126=132 feet.

Hence, the height of the tree is 132 feet.

7 0
2 years ago
Lorena is buying school supplie. She buys 4 notebooks for $2.50 each, 10 pencils for $0.75 each, and 5 pens of equal price.
laila [671]

Answer:

The answer is $1.25

Step-by-step explanation:

She buys 4 notebooks for $2.50 dollars each.

Multiply 2.50 times 4 then you get $10.00

She buys pencils 10 for $0.75 each.

Multiply 10 times 0.75 and you will get $7.50

Then you add $10.00 + $7.50 which will give you $17.50.

Subtract $17.50 from $23.75 which will give you $6.25.

You divide $6.25 by 5 which will give you $1.25.

5 0
3 years ago
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