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Dmitry [639]
4 years ago
12

7. Write a two-column proof Given: 2x+6 96Prove: x = 45

Mathematics
1 answer:
Sunny_sXe [5.5K]4 years ago
3 0

Answer:

2x + 6 = 96 - Given

2x = 90 - Subtraction Prop of equalities

x = 45 - Division prop of equalities

Step-by-step explanation:

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The combined height of one for tree and one pine tree is 21 meters. The height of 4 for trees stacked on top of each other is 24
slamgirl [31]

Answer:

The height of the fir tree is <u>9 meters</u> tall and the pine tree is <u>12 meters</u>.

Step-by-step explanation:

Given:

Note :→ there is a mistake it is <u>fir tree</u> not for tree.

The combined height of one fir tree and one pine tree is 21 meters.

The height of 4 fir trees stacked on top of each other is 24 meters taller than one pine tree.

Now, to find how tall are the types of trees.

Let the height of one fir tree bex.

And the height of one pine tree be y.

So, the combined height of one fir tree and one pine tree:

x+y=21.

y=21-x..........( 1 )

Now, as given the height of 4 for trees stacked on top of each other is 24 meters taller than one pine tree:

4x=y+24.

Putting the value of equation (1) in the place of y :

4x=21-x+24

<em>Adding both the sides x we get:</em>

5x=21+24.

5x=45.

<em>Dividing both the sides by 5 we get:</em>

x=9\ meters.

<em>So, the height of one fir tree = 9 meters.</em>

Now, putting the value of x in equation (1) we get:

y=21-9

y=12\ meters.

<em>Thus, the height of one pine tree = 12 meters.</em>

Therefore, the fir tree is 9 meters tall and the pine tree is 12 meters tall.

6 0
3 years ago
The student council at Eleanor Roosevelt High School is taking a survey of student opinions on this year's homecoming theme. To
xeze [42]

Answer:

i  dont think so because it wont work effictianly

Step-by-step explanation:

5 0
3 years ago
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If O is an angle in standard position and its terminal side passes through the point
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Answer:

-1/3

Step-by-step explanation:

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3 years ago
What is a equivalent ratio of 45 and 90
lakkis [162]

Answer:

90:180, 135:270, 180:360

   

Step-by-step explanation:

7 0
4 years ago
PLEASE HELP ASAP!
fomenos

Answer:

The answer could be A

Step-by-step explanation:

Got this from another Brainly user

3 0
3 years ago
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