A true/false test has 20 questions on it. What is the probability that you get at least 18 right by purely guessing?

Answers

Answer 1

Answer:

I would say if your lucky 6/20 but if not 4/10


Related Questions

Part A 4.59 is 3.4% of what number ?
Part B 98% of 66 is what number ?
Part c what number is 36% of 142 ?

Answers

A= (4.59 x 100)/ 3.4= 135
B= (66 x 98)/100= 64.68
C= (142 x 36)/100= 51.12

androy12 answer na dito​

Answers

Answer:

hindi ko po kilala yan

Step-by-step explanation:

pero salamat sa points ☺️☺️

Divide x4+2x2−24
by x+2

Answers

[tex]\begin{array}{c|c}_{-}\ x^4+2x^2-24 &\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\! \underline{ x+2 } \\ \!\!\!\!\!\!\!\!\!\!\! \underline{x^4+2x^3}& x^3-2x^2+4x-8 \\{ \big{_{-}}}-2x^3-24& \\\underline{-2x^3-4x^2}& \\ _{-} \ 4x^2-24 & \\ \underline{4x^2+8x}& \\ _{-}-8x-24& \\ \underline{-8x-16} & \\ -8 &\end {array }[/tex]

[tex]\displaystyle \frac{x^4+2x^2-24}{x+2} =x^3-2x^2+4x-8 -\frac{8}{x+2}[/tex]

I WILL MARK BRAINLIST

Answers

It’s the third choice

Eight more than the difference of −5s and −6s is equal to the sum of 3 and 7

Answers

3 + 7 = 10

10 - 8 = 2

-5s - -6s = 2

s = 2

Answer:

s=2

Step-by-step explanation:

-5s + 6s + 8 = 3 + 7

s + 8 = 10

s + 8 - 8 = 10 -8

s = 2

Please need it fast will give brainliest At 5:00 A.M. the temperature in Phoenix, Arizona, was already 80°F. By 3:00 P.M. the
temperature had risen to 97°F. What is the difference in the temperatures?

Answers

Answer:

The difference is 17 degrees.

Step-by-step explanation:

You want to take your final temperature which in this case is 97°F, and then subtract it from the starting temperature which is 80°F. Doing this will help you find your difference.

97-80 = 17°F

I hope this helps! :)

Please help me... it would be great!

Answers

3) 1 1/2 gallons for 3/4 of the room

Answer; 2 gallons for 4/4 of the room

4) 12 1/2 gallons drives 325 miles

Answer; 1 gallon drives 26 miles

Can someone help me please ?

Answers

Answer:

I don't know the answer sorry luv but ur pfp is cute

-xoxo

solve pls brainliest

Answers

Solve what

I think ym forgot to add the question or sth

3-3-2-2-2 written as a whole number​

Answers

Answer:

I think this would be 33,222 I don't know I feel positive about this.

Step-by-step explanation:

The answer is 33,222

The diagram shows a triangle.

What is the value of c?
C=

Answers

Step-by-step explanation:

a triangle is equal to 180 degrees

180 minus 36 gives us 144

144 divided by 8c equals 18

c equals 18

If sinx, 1,Cos2x are in GP then X=​

Answers

Answer:

I am doinnnnngggghgh ggggggh

Answer:

god knowsnnsjjejjejek

ℎ(?=4?Ȓ12 ?ћ???=?Ď(?−18

Answers

Answer:

4

Step-by-step explanation:

just trust me

(7x+19){}(x+1){}(x+5)

Answers

We move all terms to the left:

7x-19-(x+5)=0

We get rid of parentheses

7x-x-5-19=0

We add all the numbers together, and all the variables

6x-24=0

We move all terms containing x to the left, all other terms to the right

6x=24

x=24/6

x=4

Neil change the oil in his vehicle the car requires 6 quarts of oil if Neil wants to change his or every month for a year how many quarts of oil will Neil need?

Answers

Answer:

72 quarts

Step-by-step explanation:

1 year = 12 months, and Neil changes the oil each month, and each month he uses 6 quarts of oil.  So, the number of quarts he will need for a year is

6 + 6 + ... + 6, twelve times, which equals 12(6) = 72 quarts.

George is baking a cake using 1/3 cups of milk for every 3/4 cups of flour. How much flour should he use if he has 2 cups of milk?

Answers

Answer:

4 and 1/2 cups of flour

Step-by-step explanation:

First, you need to divide 2 by 1/3, which will give you 6. Then multiply 6 by 3/4, which gives you 4 1/2. Hope this helped!

simplify 4h^j^-5k^7 ​

Answers

Answer:

Answer in picture below

please help need this done by tomorrow thank you [PHOTO]​

Answers

4x + 4° + 4x - 32° = 180°
8x - 28° = 180°
8x = 180° + 28°
8x = 208°
x = 26°

solve pls brainliest

Answers

Step-by-step explanation:

a))) -31-71=-102

b)-9+14=+5

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

A. - 31 - 71 = - 102

B. - 9 + 14 = 5

»»————- ★ ————-««  

Here’s why:  

⸻⸻⸻⸻

A. The minuend, subtrahend, and difference are parts of a subtraction problem. In the subtraction problem, - 31 - 71 = - 102, the number - 31 is the minuend, the number 71 is the subtrahend and the number - 102 is the difference.

B. When you are adding a negative number to a positive number you are effectively subtracting the second number from the first. ... And then you add the negative number, which means you are moving to the left – in the negative direction.

⸻⸻⸻⸻

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  

F(x)= 2x^3 + 5x^2 -x -6 is divided by x+1

What is the remainder and is it a fraction?

Remainder: 0 or -2
Is it a factor: yes or no

Answers

Step-by-step explanation:

substitute x= -1 into the equation to get the remainder

remainder= -2

the remainder is not a fraction

no, it is not a factor since its remainder is not zero

Among 690 adults selected randomly from among the residents of one town, 23.5% said that they favor stronger gun-control laws. Group of answer choices 162 161 163 160

Answers

Answer:

It would be 162

Step-by-step explanation:

690 x 0.235 = 162.15 which rounds to 162

the calories in a breakfast sandwich come from three sources: 144 calories are from carbohydrates 108 calories are from fat and 56 calories are from protein use properties of addition to find the total number of calories in the sandwich

Answers

Answer:

308

Step-by-step explanation:

144+108+56=308

A student would like to estimate the height of a statue. The length of the​ statue's right arm is 51 feet. The​ student's right arm is 2 feet long and her height is 5
1
3 feet. Use this information to estimate the height of the statue. How close is the approximate height to the​ statue's actual height of 135 ​feet, 3 inches from heel to top of​ head?


I got a.
13 feet

b. What is the difference between the appoximate height of the statue and its actual​ height?

Answers

Answer:

FEET

Step-by-step explanation:

1240 at 8% compounded annually for 3 years

Answers

Answer:

1562.05

Step-by-step explanation:

A = P(1 + r/n)^(n*t)

A = 1240(1 + 0.08/1)^(3*1)

A = 1562.04288

A = 1562.05

HELP!!!! PLEASE URGENT!!! IM BEING TIMED!!! thank you

Answers

The answer for that question is B
The answer to the question is B

Use the number line to find the difference of 3 - (-1.5)

Answers

your answer is 4.5 you're welcome :-)

Answer:4.5

Step-by-step explanation:

the rule is

positive - negative  changes to positive + positive so

3- (-1.5) changes to 3 + 1.5 which equals 4.5

please please help me​

Answers

It’s 60°, because a triangle has 180° and it’s an equilateral triangle therefore 60

will mark brainliest!!
A traveler can choose from 4 airlines, 10 hotels and 5 rental car companies. How many arrangements of these services are possible?

Answers

200 arrangements of services

According to the new remuneration scheme, the starting pay of a lecturer a is RM3,087 per month and the annual increment is RM195. Ahmad, who is 25 years old, becomes a lecturer in a university. (a) What will his monthly salary be when he is 45 years old? (b) What will his age be when he gets a monthly payment of RM8,937?​

Answers

Step-by-step explanation:

arithmetic sequence : every new item of the sequence is created by adding a constant term to the previous item - in this case 195.

a1 = 3087 (that's our starting value)

a2 = a1 + 195

a3 = a2 + 195 = a1 + 2×195

an = a1 + (n-1)×195

a)

when he is 45 years old, that is 20 years (and 20 annual increments) plus to our starting value.

so, n = 1+20 = 21

a21 = a1 + 20×195 = 3087 + 20×195 = 6987

so, when he is 45 years old, his monthly salary will be RM6,987

b)

how many years (= how big is n) until he gets 8937 ?

8937 = a1 + (n-1)×195 = 3087 + (n-1)×195 =

= 3087 + n×195 - 195 = 2892 + n×195

6045 = n×195

n = 6045/195 = 31

so, a31 = 8937

and that means, he has to work 30 additional years (31 minus the starting level 1) to earn monthly RM8,937.

that means he will be 25+30 = 55 years old.

The mean of a soccer team goals is 6 goals after 4 games. If the team scored 5 goals in the first game, 6 goals in the second game and 6 goals in the third game, how many goals did they score at the 4th game?

Answers

Answer:  7 goals

=====================================================

Work Shown:

We have this set of data

[tex]\begin{tabular}{|l|l|}\textbf{game} & \textbf{goals}\\ 1 & 5 \\ 2 & 6 \\ 3 & 6\\ 4 & x \end{tabular}[/tex]

where x is some positive whole number. Add up everything in the second column:

5+6+6+x = x+17

This represents the total number of goals made over the four games.

Divide this over the number of games played (4) and set that equal to the mean of 6. Solve for x.

(x+17)/4 = 6

x+17 = 4*6

x+17 = 24

x = 24-17

x = 7

7 goals were scored in the fourth game.

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