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Lady_Fox [76]
2 years ago
5

A teacher gave a 5-question multiple choice quiz. Each question had 4 choices to select from. If the a student completely guesse

d on every problem, what is the probability that they will have less than 3 correct answers?
A. 0.088

B. 0.264

C. 0.896

D. 0.984
Mathematics
1 answer:
Arturiano [62]2 years ago
4 0

I just did this problem, but I got it wrong. Soo I know its not A.

Step-by-step explanation:

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What is 75/8 as a mixed number
stich3 [128]

9 and 3/8 is 75/8 as a mixed #.
5 0
3 years ago
Plzzzz help me with this problem
hichkok12 [17]

Answer:

Option B

Step-by-step explanation:

The Europeans moved to American colonies in order to increase their wealth and broaden their influence over world affairs.

7 0
3 years ago
A recipe calls for 3/4 cup of butter. Angie wants to triple the recipe, but she has only 1 5/8.
Lyrx [107]
Let's start out by tripling the original recipe to see how much butter Angie needs.

\frac{3}{4} * 3 = total
\frac{3* 3}{4} = total
\frac{9}{4} = total
2 \frac{1}{4} = total

So we need 2 \frac{1}{4} cups of butter, but Angie only has 1 \frac{5}{8}. Let's subtract what Angie has from the total to see how much more she needs.

2 \frac{1}{4}  -  1\frac{5}{8} = n
\frac{9}{4} - \frac{13}{8} = n
we will need the least common denominator for both fractions
\frac{2}{2} *(\frac{9}{4}) - \frac{13}{8} = n
\frac{18}{8} - \frac{13}{8} = n
\frac{5}{8} = n

So Angie need \frac{5}{8} cups more of butter for the recipe.

7 0
3 years ago
A mass of 5 kg stretches a spring 10 cm. The mass is acted on by an external force of 10sin( t ) N(newtons) and moves in a mediu
yKpoI14uk [10]

Answer:

A) C1 = 0.00187 m = 0.187 cm,  C2 = 0.0062 m = 0.62 cm

B)  A sample of how the graph looks like is attached below ( periodic sine wave )

C) w = \sqrt[4]{3} is when the amplitude of the forced response is maximum

Step-by-step explanation:

Given data :

mass = 5kg

length of spring = 10 cm = 0.1 m

f(t) = 10sin(t) N

viscous force = 2 N

speed of mass = 4 cm/s = 0.04 m/s

initial velocity = 3 cm/s = 0.03 m/s

Formulating initial value problem

y = viscous force / speed = 2 N / 0.04 m/s = 50 N sec/m

spring constant = mg/ Length of spring = (5 * 9.8) / 0.1 = 490 N/m

f(t) = 10sin(t/2) N

using the initial conditions of u(0) = 0 m and u"(0) = 0.03 m/s to express the equation of motion

the equation of motion = 5u" + 50u' + 490u = 10sin(t/2)

A) finding the solution of the initial value

attached below is the solution and

B) attached is a periodic sine wave replica of how the grapgh of the steady state solution looks like

C attached below

3 0
3 years ago
I trying to simplify ( 14+5) +15÷2 PLEASE HELP this is a 5th grade math question
sertanlavr [38]

Answer:

14+5 = 19

19 + 15/2

15/2 = 7.5

19+7.5 = 26.5


Just remember PEMDAS!

Pls mark brainliest

Step-by-step explanation:


6 0
3 years ago
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