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exis [7]
3 years ago
11

PLEASE HELP WILL GIVE BRAINLEST

Mathematics
2 answers:
garik1379 [7]3 years ago
7 0
The experiment probability is 2% lower than the theoretical probability
Neporo4naja [7]3 years ago
7 0
<span>The experimental probability is 2% lower than the theoretical probability.</span><span>

52/(52+48)*100 = 52%

</span>
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Evaluate the expression without using a calculator.<br> In1/e^7
Sati [7]

Answer:

-7

Step-by-step explanation:

ln(\frac{1}{e^7})\\=ln(e^{-7})\\  =-7ln(e)\\=-7

8 0
3 years ago
A party mix is made by adding nuts that sell for $2.50 per kg to a cereal mixture that sells for $1 per kg. How much of each sho
Nana76 [90]

Answer:

n=16 kg

c=44 kg

Step-by-step explanation:

Let

n=nuts at $2.50 per kg

c=cereal at $1 per kg

n+c=60 (1)

2.5n + c=1.40(60) (2)

From (1)

n=60-c

Substitute n=60-c into (2)

2.5n + c=1.40(60)

2.5(60-c) +c=84

150-2.5c+c=84

-1.5c=84-150

-1.5c= -66

Divide both sides by -1.5

c=44 kg

Substitute c=44 into (1)

n+c=60

n+44=60

n=60-44

=16

n=16 kg

The amount of nuts is 16 kg and cereal mixture is 44 kg to obtain 60 kg of a mix that will sell for $1.40 per kg.

8 0
3 years ago
Jada measured the height of a plant in a science experiment and finds that, to the nearest
bulgar [2K]

Answer:

bvglcvjgc.gv.jgv.hv.jg.v

Step-by-step explanation:

h;fyi;f;f;iyf

4 0
3 years ago
An image of a parabolic lens is projected onto a graph.The y-intercept of the graph is (0, 90), and the zeros are 5 and 9. Which
Gnesinka [82]

Step-by-step explanation:

If the zeros are 5 and 9, then the equation will have the form:

y = a (x–5) (x–9)

We know the point (0, 90) is on the curve, so we can use this to find the coefficient a:

90 = a (0–5) (0–9)

90 = 45a

a = 2

y = 2 (x – 5) (x – 9)

6 0
4 years ago
Read 2 more answers
2. Two rectangular fields with identical shapes and areas are to be fenced side by side. The total area enclosed is 8mi^2 and th
CaHeK987 [17]

Step-by-step explanation:

Let length is x and breadth is y.

The formula for the area and the perimeter of a rectangle is given by :

A = xy

P = 2(x+y)

Here, A = 8 mi² and P = 16 miles

Putting all the values,

xy = 8

y=8/x ......(1)

2(x+y) = 16

x+y = 8 .....(2)

Put equation (2) in equation (1) as follows :

x+\dfrac{8}{x}=8\\\\x^2+8=8x\\\\x^2-8x+8=0

When we solve, we get :

x = 6.82 miles, 1.17 miles

Put the value of x in equation (1)

When x = 6.82 miles,

y = 8/6.82

y = 1.17 miles

When x = 1.17 miles,

y = 8/1.17

y = 6.82 miles

Hence, the dimension of the field is 6.82 miles and 1.17 miles.

8 0
3 years ago
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