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Alekssandra [29.7K]
3 years ago
11

May I have some help please.

Mathematics
1 answer:
anzhelika [568]3 years ago
7 0

Answer:

Step-by-step explanation:

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Jason places a mirror on the ground 40 feet from the base of a tree. He walks backwards until he can see the top of the tree in
Bas_tet [7]
Let
x---------------> <span>the height of the tree

we know that
by using proportion
</span>\frac{40}{8} = \frac{x}{6}  \\  \\ 40*6=8*x \\  \\ x=40*6/8 \\  \\ x=30 feet
<span>
therefore

the answer is
</span><span>the height of the tree is </span>30feet
7 0
3 years ago
Read 2 more answers
In 1982 John Hinckley was on trial, accused of having attempted to kill the then US President Ronald Reagan. Hinckley was found
Nadya [2.5K]

Answer:

O.186 or 18.6%

Step-by-step explanation:

Let s = event of schizophrenia

B = brain atrophy

From our question we have:

P(s) = probability of those suffering from schizophrenia = 1.5% = 0.015

P(B|S) = probability of brain atrophy = 30% = 0.30

P(S') = 1 - 0.015 = 0.985

P(B|S') = 2% = 0.02

Probability Hinckley suffered from schizophrenia

= P(S|B) = P(B|S)P(S)/P(B|S)P(S)+P(B|S')P(S')

= (0.30x0.015)/(0.30)*(0.015)+(0.02)(0.985)

= 0.0045/0.0045+0.0197

= 0.0045/0.0242

= 0.185950

This is approximately 0.186 or 18.6%

4 0
3 years ago
alex spent 3/7 of his money he gave 1 /4 of the remainder to his sistet he haf $120 left how much money did he in the beginning
Sonbull [250]
Let his total money be x.
He spent (3/7)*x of his money.
He gave 1/4(x-3/7x) to his sister. 
which is : (1/4)*(4/7)*x = (1/7)*x 
Now,
How much money he have in the beginning = 
(3/7)*x+(1/7)*x+120=x
(4/7)*x+120=x
120=x-(4/7)*x
120=(3/7)*x
x=120*7/3 [cross multiplication]
x=280.

So, Alex had $280 in the beginning.

6 0
3 years ago
Use slope and y intercept to graph a line. y=2x-5
Solnce55 [7]
On your graph:

-- Mark a dot on the y-axis, at y = -5 .

-- From there, move 1 unit to the right and 2 units up and make a mark.  If this
is too tiny for you, then you can move 7 units to the right and 14 units up, or
11 units to the right and 22 units up ... any way you want to do it, as long as
the distance 'up' is double the distance to the right, because the slope is 2 to 1.
Wherever you wind up, mark a dot.

-- Using your pencil and your ruler, draw a straight line between the two dots you have
marked.  You may extend it as far as you wish in either or both directions.
8 0
3 years ago
Read 2 more answers
How many 3/8s are in 6
dlinn [17]

Answer:

16

Step-by-step explanation:

6 divided by 3/8=6*8/3=48/3=16

5 0
3 years ago
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