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3 years ago

5

A test consists of 20 true/false questions. If a student guesses on each question, what Is the probability of getting exactly 15

correct

1 answer:

k0ka [10]3 years ago

5 0

Answer:

50%

Step-by-step explanation:

due to the fact that its true/false questions, so that means when you answer you have 2 choices. a 50/50 chance of getting them right or wrong

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Susan's fish tank has 16 liters of water in it. She plans to add 4 liters per minute until the tank has at least 64 liters. What

Stolb23 [73]

Answer:

64

Step-by-step explanation:

cause I did it in classs

3 0

3 years ago

If m∠UNR = 180° find m∠RNS<br> A. 27°<br> B. 34°<br> C. 59°<br> D. 94°

LenaWriter [7]

Answer:

Option A) m∠RNS=27°

Step-by-step explanation:

We know that $m$ ∠UNR = 180°. This tells us that the Sum of the enclosed angles should equal 180°, by trigonometry. So the enclosed angles are:

$m$ ∠RNS = $(3x+6)^{o}$

$m$ ∠SNT= $(13x+3)^{o}$

$m$ ∠TNU= $(10x-11)^{o}$

Now let us add all the angles and solve for the value of $x$ as follow:

$m_{RSN}+m_{SNT}+m_{TNU}=m_{UNR}\\\\(3x+6)+(13x+3)+(10x-11)=180\\\\3x+13x+10x+6+3-11=180\\\\26x-2=180\\\\26x=180+2\\\\26x=182\\\\$

$x=\frac{182}{26} \\\\x=7$

Now lets plug in the value into the expression for angle $m$ ∠RNS to find the angle as:

$RNS = (3x+6)^{o}\\\\RNS=(3(7)+6)^{o}\\\\RNS=(21+6)^{o}\\\\RNS=27^{o}$

Thus Option A. is the correct answer.

7 0

3 years ago

Express 0.52 as a fraction

ioda

52/100
26/50
13/25
These will all do.

7 0

3 years ago

Read 2 more answers

Translate each sentence into an equation. Then find each number.

PIT_PIT [208]

Answer:

10 - 3n = 31

n = -7

Step-by-step explanation:

10 - 3n = 31

-3n = 31 - 10

-3n = 21

n = 21/-3

5 0

3 years ago

Y+2=-5/4(x-4) what is the slope

lord [1]

Because Point Slope Form contains m, or slope, in itself, look at the number that is multiplying the parentheses.

-5/4 is m, or slope.

4 0

3 years ago