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3 years ago

I. Rachel was planning on cooking chicken

Mathematics

1 answer:

Burka [1]3 years ago

7 0

Answer:

2 times 10 plus 4 times 10!

Step-by-step explanation:

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A quiz consists of 10 multiple choice questions, each with five possible answers, one of which is correct. to pass the quiz a

blsea [12.9K]

The probability is 0.006, or 0.6%.

This is binomial; there are a fixed number of trials (10), the events are independent (the chances of one occurring do not affect the chances of the other occurring), and there are two outcomes (either right or wrong).

He must get 6 of the 10 questions correct, so k is 6 and n is 10. The probability of getting a question correct is 1/5=0.2; the probability of getting a question incorrect is 4/5=0.8.

$_{10}C_6\times(0.2)^6\times(1-0.2)^{10-6}
\\
\\\frac{10!}{6!4!}\times(0.2)^6\times(0.8)^4
\\
\\210(0.2)^6\times(0.8)^4=0.0055\approx0.006$

6 0

4 years ago

For a project, Gabrielle made a model of an Egyptian pyramid. The square base has a side length measuring 10 inches.

wlad13 [49]

The surface area of the model is 360

6 0

3 years ago

Read 2 more answers

A spring stretches out by 8cm when a 0.2 kg weight is placed on it. How much does the spring stretch by when a 0.5 kg weight is

Ierofanga [76]

m₁ = mass hanged initially = 0.2 kg

x₁ = initial stretch in the spring = 8 cm = 0.08 m

k = spring constant of the spring

the weight of the mass hanged is balanced by the spring force by the spring hence

Spring force = weight of mass hanged

k x₁ = m₁ g

k (0.08) = (0.2) (9.8)

k = 24.5 N/m

m₂ = mass hanged later = 0.5 kg

x₂ = final stretch in the spring = ?

k = spring constant of the spring = 24.5 N/m

the weight of the mass hanged is balanced by the spring force by the spring hence

Spring force = weight of mass hanged

k x₂ = m₂ g

(24.5) x₂ = (0.5) (9.8)

x₂ = 0.2 m = 20 cm

5 0

3 years ago

PLEASE HELP STEP BY STEP

11Alexandr11 [23.1K]

Answer:

C(-3,1)=X1,Y1

D(5,6)=X2,Y2

Step-by-step explanation:

(distance)^2=(X2-X1)^2+(Y2-Y1)^2

=64+25

=89

4 0

3 years ago

What does Y=???? Plz help me been stuck on this

garri49 [273]

9514 1404 393

Answer:

y = 8

Step-by-step explanation:

It can be useful to write down the values of corresponding parts of the figures. This can help you see the ratio between corresponding measures. Here, we're concerned with sides.

AB = ?, FE= 6

BC = 10, EC = 5 . . . . . a ratio of 2:1

CD = ?, CG = ?

DA = y, GF = 4

So, the proportionality of the sides in these similar figures means ...

y/4 = 10/5

y = 4×10/5

y = 8 . . . . multiply by 4

3 0

3 years ago