Answer:
The probability is 0.28157
Step-by-step explanation:
The number of answers are 40 answers ( 10 questions and 4 answer each)
The number of correct answers is only 10
So the probability that he answers 2 exactly out of 10 means he correctly selected 2 answers
The probability will be;
10 C 2/ 40 C 10
This mean out of the total 10 correct, he selects 2 and out of the total 40 , he selects 10
The probability of selecting a correct answer is;
1/4 while the probability of selecting a wrong one is 3/4
So probability of selecting 2 correct out of a total 10 will be
10 C 2 (1/4)^2 (3/4)^8
= 0.28157
1. Here is a number line. Write the two missing numbers in the boxes.
0
2
Answer:
The box on the left is 0.4 and the box on the right is 1.8
A light bulb consumes 2700 watts an hour in 4 days and 12 hours. How many watts does it consume in a day
Answer:
The light bulb will consume 600 watts in one day.
Step-by-step explanation:
Let us suppose the light bulb is continuously ON.
As a light bulb consumes 2700 watts an hour in 4 days and 12 hours.
4 days and 12 hours = 96 hours + 12 hours = 108 hours
So, a light bulb consumes 2700 watts in 108 hours.
Hence,
A light bulb consuming the watts per hour will be: 2700/108 = 25 watts
As a light bulb consumes 25 watts in one hour, there are 24 hours in a day.
Light bulb consuming total no of watts in a day = 25 × 24 = 600 watts
Therefore, the light bulb will consume 600 watts in one day.
2ND METHOD
4 days and 12 hours = 4.5 days
Total no of watts cosumed by a light bulb in 4.5 days = 2700 watts
so
Total number watts consumed in a day = 2700 / 4.5 = 600 watts.
Therefore, the light bulb will consume 600 watts in one day
the equation a=640 s gives the relationship between s square miles and a acres. Pam owns 4.5 square miles of farmland. how many acres does she own
Answer:
23
Step-by-step explanation:
im sorry i just want some points but look it up im sure youll figure it out !
Marilyn managed to sell 3/5 of her cakes.
a. What percentage of cakes was sold?
b. What percentage of cakes was left?
Answer:
Step-by-step explanation:
A: She sold 60% of her cakes
B: 40% was left
I’m pretty sure these are the answers
Hello I hope you have a wonderful day can you pls help me out it I will fail
Could anybody help me please?
Without solving, identify if the equation will have a solution that is positive, negative, or zero.
A. Zero
B. Positive
C. Negative
Identify if the equation has
*one solution only
*infinite number of solutions
*one solution only
7(x-5)=x+13
A. Infinite number of solutions
B. No solutions
C. One solution only
Answer:
it is positive and it has 1 solution
Step-by-step explanation:
Find the quotient of 1 1/4and 3 1/2 . Express your answer in simplest form.
Answer:
5/14
Step-by-step explanation:
convert mixed number to improper fraction:
1 1/4 = 5/4
3 1/2 = 7/2
5/4÷7/2
multiply first number by reciprocal of second number. To get the reciprocal, switch the numerator and denominator.
5/4*2/7
=10/28
simplify
= 5/14
Answer:
5/14
Step-by-step explanation:
Remember: Keep, change, flip
Keep: 1 1/4 = 5/4
Change: ÷ -> ×
Flip: 3 1/2 = 7/2 = 2/7 flipped
Original: 5/4 ÷ 7/2 = x
Keep change flip method: 5/4 × 2/7 = x
x = 10/28 which simplifies to 5/14
x = 5/14
What is x and y, and how do you do this problem
Answer:
you got it correct no needed corrections
Step-by-step explanation:
A. Last night, 8.2 x 105 fans
attended a concert, and each
fan recorded an average of
600 seconds of the concert on
their phones. What is the total
number of seconds recorded
from all of the fans at the
concert?
Step-by-step explanation:
8.2 x 105 = 861
861 x 600 = 516,600
Answer: 516,600
PLSSS ANSWER I DONT HAVE LOTS OF TIMEEE!!?!?!?!?!?!??!??!??! Three families took a vacation to Phoenix. The Abbott Family spent $840 on four nights at their hotel and three airline tickets. The Baker Family spent $1,130 on nine nights at their hotel and two airline tickets. The Carson Family spent $2,080 on six nights at their hotel and five airline tickets. Two of the families paid the same price per night at their hotel and per airline ticket.
Which two families would have had to pay the same price per night at their hotel and per airline ticket to have the largest possible nightly hotel cost?
A.
the Abbott and Baker Families
B.
the Abbott and Carson Families
C.
the Carson and Baker Families
D.
all three families would have to pay the same price
Answer:
c
Step-by-step explanation:
both of the familys have higher cost and have to stay longer
Pls help it’s algebra 1
Answer:
Y+1=-1/2(x-4) the very bottom choice trust me its in point slope form and since the 1 is negative it turns into a positive for the equation and adds to the Y
Step-by-step explanation:
Gavyn & Raj share a lottery win of £950 in the ratio 1 : 4.
Gavyn then shares his part between himself, his wife & their son in the ratio 5 : 3 : 2.
How much more does his wife get over their son?
Answer:
£19
Step-by-step explanation:
Gavyn:Raj=1:4£950 to be split in 1:4, so Gavyn=£190 and Raj=£760Gavyn:Wife:Son=5:3:2£190 to be split in 5:3:2, so Gavyn=£95, Wife=£57, and Son=£38Wife gets £57-£38=£19 more than her sonShould be easy points!
The sum of 2 times a number and twice its reciprocal is 20/3. Find the numbers.
Please show work because I am so lost.
Answer:
Let x represent the number from the sentence.
Step-by-step explanation:
2(x) + 2(1/x) = 20/3
2x + 2/x = 20/3
multiply both sides of the equation by 3x
6x + 6 = 20x
6x - 20x + 6 = 0
6x - 18x - 2x + 6 = 0
6x(x-3 -2(x-3) = 0
(6x-2 = 0 or x-3 = 0
6x = 2 or x = 3
x = 2/6
x = 1/3
Since x represented the number
Therefore x = 1/3 or 3
8th GRADE MATH #7 On its first visit to the vet, Emma’s Kitten weighed 30 ounces. On its second visit, the kitten had gained 8 ounces. On its third visit, the kitten had gained another 6 ounces. What is the percent increase, rounded to the nearest percent, of the kitten’s weight since its first visit? *
Answer:
32%
Step-by-step explanation:
Want to help me thanks if not ok to
will give brainliest
Answer:
The answer is 18.2
Step-by-step explanation:
17+24+19+17+14=91
91/5=18.2
y = 4x + 7 at x = -2 ?
Answer:
-1=y
Step-by-step explanation:
Four times a number added to six equal 26
Answer:
x=5
Explanation:
4x + 6 =26
4x = 20
x = 5
Answer:
x = 5
Step-by-step explanation:
Equation: 4x + 6 = 26
Subtract 6 from both sides: 4x = 20
Divide each side by 4: x = 5
I hope this helped, please mark Brainliest, thank you !!
Bill drove 406 miles in 7 hours. What was the average speed per hour? WILL GET BRAINLIEST!!!!!
Answer:
58 miles per hour
Step-by-step explanation:
Divide 406 by 7
2+24/654-7986x76483=
Answer:
-610793236
Step-by-step explanation:
2+24/654-7986x76483 (punch it in the calculator)
= -610793236
or if you need to "show your answer"
2+24/654-7986x76483
= 2+24/654-610793238
= 2+ 0.36- 610793238
= 2+ (-610793238)
= - 610793236
2x +8= 3x-4 what is x equal two
Answer:
x= 12
Step-by-step explanation:
An athlete in training rides his bike 50 mi and then immediately follows with a 2.5 mi run. The total workout takes him 2.5 hr. He also knows that he bikes about twice as fast as he runs. Determine his bike speed and his running speed.
Part 1
His running spend is ___mph
Part 2
His biking speed is ___mph
Answer:
12345
Step-by-step explanation:
so you add and then you got it
Which type of cell is most responsible for relaying information to the brain about external stimuli such as heat?
A.
nerve cells
B.
red blood cells
C.
muscle cells
D.
white blood cells
Answer:
A. Nerve cells
Step-by-step explanation:
Answer:
nerve cells
Step-by-step explanation:
I need help, the options are: Corresponding Angles, Vertical Angles, Alternate interior angles, linear pair, alternate exterior angles, and consecutive interior angles.
Answer:
✔️ <1 and <3 => Vertical angles
✔️<2 and <6 => alternate exterior angles
✔️<2 and <4 => corresponding angles
✔️<3 and <7 => alternate interior angles.
✔️<4 and <3 => consecutive interior angles.
✔️<7 and <6 => linear pair angles.
Step-by-step explanation:
✔️ <1 and <3 are opposite angles formed when two straight lines intersect. They both share the same vertex. Thus, they are vertical angles, which are congruent to each other.
<1 and <3 are vertical angles.
✔️<2 and <6 are alternate exterior angles.
<2 and <6 both lie outside the straight lines cut across by the transversal, and they also lie in the side of the transversal alternating each other
✔️<2 and <4 are corresponding angles.
They both take the same position on the same side of the transversal.
✔️<3 and <7 are alternate interior angles.
They are alternating angles along the transversal that are located just within the two lines intersected by the transversal.
✔️<4 and <3 are consecutive interior angles.
They are angles on the same side of the transversal but lie within the two straight lines intercepted by the transversal.
✔️<7 and <6 are linear pair angles.
They are angles on a straight line, and sum up to 180°.
Ann can accomplish his school project in x hours. What part of his school project can be completed
by Ann after 2 hours?
Answer:
T = [tex]\frac{2}{x}[/tex]
Step-by-step explanation:
Since we are only given the total number of hours that the project will take and nothing else, we can simply divide the 2 hours by the total number of hours in order to create an expression for the percent that will be completed in that time which in this expression would be represented by the variable T.
T = [tex]\frac{2}{x}[/tex]
We can then use this equation by plugging in a value for x in order to calculate the percent of the project that will be completed in 2 hours.
Find the equation of the circle with radius 3 and center (6,-2)
Answer:
(x - 6)² + (y + 2)² = 9
General Formulas and Concepts:
Pre-Calculus
Equation of a Circle: (x - h)² + (y - k)² = r²
(h, k) is the centerr is the radiusStep-by-step explanation:
Step 1: Define
Center (6, -2)
Radius r = 3
Step 2: Write equation
Substitute: (x - 6)² + (y + 2)² = 3²Evaluate: (x - 6)² + (y + 2)² = 9Shown here is a mathematical step taken when solving an equation. Identify the mathematical reason or property used to simplify from the first step to the second step. 8D=56. D=7
Answer:
D. Division Property of Equality
Step-by-step explanation:
Given that [tex] 8D = 56 [/tex], to find the value of D, the property of equality that needs to be applied here would be the one that would make both sides equal by performing the same operation on both sides of the equation.
Thus:
Applying the the Division Property of Equality, we would divide both sides by 8.
[tex] \frac{8D}{8} = \frac{56}{8} [/tex]
[tex] D = 7 [/tex]
This will leave you with D standing alone. Of which value is 7.
HEYYYYYYYYYYY I NEED HELPPPPPP WILL GIVE BRAINLIST
Answer:
1/3
Step-by-step explanation:
There are six triangles
2/6 of them are green
We can simplify this to 1/3
Answer:
1/6
Step-by-step explanation:
Rewrite the expression x^(-7/8) in radical form.
Answer:
1 / 8√ x^(7)
Tell me if you need the step by step process.
How many decimeters are in 3.5 dekameters
Answer:
350 decimeters
Step-by-step explanation:
I did it on my calculator
3. Estimate the quotient. Round the divisor first. 482 ÷61=
Answer:
8.033
Step-by-step explanation: