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snow_lady [41]
3 years ago
9

Suppose you are taking a multiple choice exam with 61 questions, each with 4 possible answers. If you were to guess at random fo

r each question, how many questions would you expect to get right
Mathematics
1 answer:
Brut [27]3 years ago
7 0

Answer:

15.25

Step-by-step explanation:

The probability of getting a question right is 1/4 because there are 4 possible answers, and you're just guessing randomly.

You can expect to get 1/4 of the questions right.

\frac{1}{4}\times 61 =15.25

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What is The expression 12+9g-30h factored using the GCF is and btw I already tryed 3
Jlenok [28]

Hello!

Answer:

3(4+3g-10h)

Step-by-step explanation:

Hope this helps!

3 0
3 years ago
A tree 63 ft high casts a 38 ft shadow. How tall is a tree that casts a 52 ft shadow at the same time of the day? (to the neares
Mrac [35]
52/38 = 1.368

1.368 x 63 = 86.21

tree is 86.2 feet high
3 0
3 years ago
What's the inverse of f(x)=3x^2+6?
djyliett [7]
Switch where the x and y are, then solve for y. f(x) = y.

x = 3y^2 + 6

x-6 = 3y^2

(x-6)/3 = y^2

f^-1(x) = y = sqrt((x-6)/3)
5 0
3 years ago
Solve the simultaneous equations:<br> 3x + 2y = 35 <br> 2x + 3y = 30
lesya [120]

Answer:

nuber 1

Simplifying

3x + 2y = 35

Solving

3x + 2y = 35

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.

3x + 2y + -2y = 35 + -2y

Combine like terms: 2y + -2y = 0

3x + 0 = 35 + -2y

3x = 35 + -2y

Divide each side by '3'.

x = 11.66666667 + -0.6666666667y

Simplifying

x = 11.66666667 + -0.6666666667y

5 0
2 years ago
When a sum of rupees hundred is divided in the ratio of 2 is to 3 find the share of each part​
yKpoI14uk [10]

2x + 3x = 100

5x=100

x=100/5

x= 20

Therefore, 2x=2×20=40

3x=3×20=60

Please mark me as brinliest.......

Glad to help you......

4 0
3 years ago
Read 2 more answers
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