Answer:
Average grade now = 7.524
Step-by-step explanation:
Given - If the average score of the 20 students is 7.5. Then a student follows the test and gets a grade of 8.
To find - What is your average grade now?
Proof -
Given that,
Average score of 20 students = 7.5
So,
Total value of students = 20 × 7.5 = 150
Now,
Given that, One person added ang his grade is 8
So,
So Total value of 21 students = 150 + 8 = 158
Now,
Average score of 21 students = [tex]\frac{158}{21}[/tex] = 7.5238
∴ we get
Average grade now = 7.524
ABC is dilated by a factor of 1/2 to produce AA'B'C!
helpppppp
Answer:
abc
Step-by-step explanation:
abc
Answer:
B
Step-by-step explanation:
A P E X
PLEASE HELP IM BEGGING YOU!!! Team Integrity kids were supposed to go on a field trip to an ice rink. The cost was $12 per student for tickets, and $10 per student for food. The team paid $50 for buses. Write an expression to represent the total cost of this field trip for the entire team. Identify what your variable represents. *
30 POINTS!!! Kent won 25% of the games he played on Saturday. If he lost 12 games on Saturday, and no game ended in a tie, how many games did he win?
Answer:
He won 4 games
Step-by-step explanation:
Percentage of games he lost= 75%
Let the total number of games be [tex]x[/tex]
75% of [tex]x[/tex] = 12
[tex]\frac{75x}{100}[/tex] = 12
75[tex]x[/tex]= 12 x 100
[tex]x[/tex]= [tex]\frac{1200}{75}[/tex]
=16
Number of games he won = 16-12
= 4
Answer:
4
Step-by-step explanation:
If Kent won 25% of the games, he lost 75% of them. Thus if g is the total number of games he played,
12 = 0.75(g) ---> g=16
So the number of games he won was 16 - 12 = 4.
What inverse operations do you use to solve for b?
-9 = -11 + b/8
Answer:
I would use multiplication
Step-by-step explanation:
Multiplication is the opposite of dividing.
is it a function? and explain briefly why
Answer:
No
Step-by-step explanation:
Each output can only have one input
The expression 16t² represents the distance, in feet, an object falls after t seconds. The object is dropped from a height of 906 feet.
Complete Question:
The expression 16t² represents the distance in feet an object falls after t seconds. The object is dropped from a height of 906 feet. What is the height in feet of the object 2 seconds after it is dropped?
Answer:
H(2) = 842 feet
Step-by-step explanation:
Let the height be H.
Given the following data;
H(t) = 16t²
Height, H = 906 feet
Time, t = 2 seconds
To find the time, t at 2 seconds, we would use the following formula;
H(t) = H - 16t²
H(2) = 906 - 16(2)²
H(2) = 906 - 16*4
H(2) = 906 - 64
H(2) = 842 feet
Therefore, the height in feet of the object 2 seconds after it is dropped is 842.
And item is regularly priced at $81. Maria brought it at a discount of 85% off the regular price you say a LEKS calculator to find out how much were you paid
Answer:$12.15
Step-by-step explanation:
Given
The regular price of an item [tex]\$81[/tex]
Maria gets a discount of [tex]85\%[/tex]
Amount paid after the discount is
[tex]\Rightarrow 81(1-85\%)\\\Rightarrow 81(1-0.85)=85(0.15)\\\Rightarrow \$12.15[/tex]
What is the cost difference between 6.75 and 8.75
what is the value of 5 in 102,587
Please help! will give brainliest!!
Answer:
For every 1 flip flop, it's $4?
Step-by-step explanation:
I'm not sure what the question is, so I'm just guessing.
Answer:
y = 4x
Step-by-step explanation:
y = profit from flip flops
x = flip flops
4 = constant rate, or slope, of the function
The sum of N terms of an arithmetic sequence with first term as 1 and common difference of 2 is 9801. Calculate the value of N.
Answer:
gngngngngngngngngngng
Answer:
n = 99
Step-by-step explanation:
The sum to n terms of an arithmetic sequence is
[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] [ 2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Here a₁ = 1 , d = 2 and [tex]S_{n}[/tex] = 9801 , then
[tex]\frac{n}{2}[/tex] [ (2 × 1) + 2(n - 1) ] = 9801 ( multiply both sides by 2 to clear the fraction )
n(2 + 2n - 2) = 19602
n(2n) = 19602
2n² = 19602 ( divide both sides by 2 )
n² = 9801 ( take the square root of both sides )
n = [tex]\sqrt{9801}[/tex] = 99
The number of terms summed is 99
What is the value of 80-5(x^2-y)+y when x=4 and y=6
Answer:h
Step-by-step explanation:
(At6) √2
Solve the equation
Answer:
[tex] {at}^{6} \sqrt{2} [/tex]
Step-by-step explanation:
1) Remove the parentheses.
[tex] {at}^{6} \sqrt{2} [/tex]
please help me with this i give brainliest.
Answer:
Step-by-step explanation:
[tex]25+12.5v\ge 130\\ \\ 12.5v\ge 105\\ \\ v\ge 8.4[/tex]
PLZZZZZZZZZZ i said plzzzzzzzzzzzzzzzzz
Answer:
136
Step-by-step explanation:
Answer:
136
Step-by-step explanation:
90+46
Como que c faz conta de raiz quadrada?
Answer:
could u say it in english and is it a multiple chice?
Step-by-step explanation:
sea f(x)=3x3+5x, calcule f(5) + f(3)
Answer:
496
Step-by-step explanation:
can I please get some help
Answer:
Step-by-step explanation:
Area is graph 1
radius is graph 2
Circumference is graph 3
ask if you want to know how I figured those out :)
Evaluate
( 2/10 ) ^3
1. 1/5
2. 6/30
3. 8/1,000
Answer:
3. 8/1,000
( I hope this was helpful) >;D
Jimbo has been putting spare change in a jar for a month. He has collected a total of
117 coins. In one jar he has pennies and in another jar he has quarters. He added them
up and found he had $17.25. How many quarters did he have?
Answer:
34
Step-by-step explanation:
17.25/2 = 8.62500
8.62500/0.25 = 34 quarter coins,
117 - 34.5 = 83 pennies
Lakmini decided to measure the circumference of the Earth
using a very long tape measure. She held the tape measure
Im from the surface of the (perfectly spherical) Earth all the
way round. When she had finished her friend said that her
measurement gave too large an answer and suggested taking
off 6 m. Was her friend correct?
[Take the radius of the Earth to be 6400 km (if you need it).]
Answer:
Step-by-step explanation:
[tex]\Delta C=2\pi(r_2-r_1)\\ \\ \Delta C=2\pi(6400001-6400000)\\ \\ \Delta C=2\pi\\ \\ \Delta C\approx 6.283m\\ \\ \text{So taking off 6 meters is reasonable.}[/tex}
Line AB contains points A (8, −4) and B (1, −5). The slope of line AB is (5 points) Group of answer choices −7 negative 1 over 7 1 over 7 7
Answer:
1/7
Step-by-step explanation:
Given that :
Line AB contains points A (8, −4) and B (1, −5)
Slope = Rise / Run
Rise = y2 - y1 = - 5 - (-4) = - 5 + 4 = - 1
Run = x2 - x1 = 1 - 8 = - 7
Slope = Rise / Run = - 1 / - 7
Slope = 1/7
hayley spent 2 1/2 of an hour playing on her phone. that used up 4/8 of her battery. how long would she have to play on her phone to use the entire battery?
Answer:
5 hours
Step-by-step explanation:
4/8 is simply 1/2 and 1/2 times 2 is 1
so 2 1/2 times 2 is 5 hours
Find an overestimate for 33 x 67 by adjusting each factor up to the next ten
Answer:
210 Is my estimate
Step-by-step explanation:
what is the vertex
x-intercept &
y-intercept
The ff data shows the weights of preschool children in a private school in kilograms: 15, 15.5, 18, 18.3, 19, 19.3, 18, 22, 21, 21, 22, 22.5. Find the 95% confidence interval for the true mean.
HELP ASP!!!
The x value of the solution to the system of equations is_____ and the y-value is_____.
DO NOT ANSWER IF YOU DONT KNOW THE ANSWER.thank you
Answer:
uuruehehejhruebejebehhrrifbfj
Step-by-step explanation:
irj4j4jrbrurbrjrbru=&=&&=&
Answer: i think its anime god
3(2x - 5)(x + 4) = 0 The zero product property tells us that:
Answer:
x=5/2, -4.
Step-by-step explanation:
3(2x-5)(x+4)=0
(2x-5)(x+4)=0/3
(2x-5)(x+4)=0
2x-5=0, x+4=0
2x=0+5,
2x=5,
x=5/2,
x+4=0
x=0-4=-4
Suppose a shoe factory produces both low-grade and high-grade shoes. The factory produces at least twice as many low-grade as high-grade shoes. The maximum possible production is 500 pairs of shoes. A dealer calls for delivery of at least 100 high-grade pairs of shoes per day. Suppose the operation makes a profit of Birr 2.00 per a pair of shoes on high-grade shoes and Birr 1.00 per pairs of shoes on low-grade shoes. How many pairs of shoes of each type should be produced for maximum profit?
Answer:
The factory should produce 166 pairs of high-grade shoes and 364 pairs of low-grade shoes for maximum profit
Step-by-step explanation:
The given parameters for the shoe production are;
The number of low grade shoes the factory produces ≥ 2 × The number of high-grade shoes produced by the factory
The maximum number of shoes the factory can produce = 500 pairs of shoes
The number of high-grade shoes the dealer calls for daily ≥ 100 pairs
The profit made per pair of high-grade shoed = Birr 2.00
The profit made per of low-grade shoes = Birr 1.00
Let 'H', represent the number of high grade shoes the factory produces and let 'L' represent he number of low-grade shoes the factory produces, we have;
L ≥ 2·H...(1)
L + H ≤ 500...(2)
H ≥ 100...(3)
Total profit, P = 2·H + L
From inequalities (1) and (2), we have;
3·H ≤ 500
H ≤ 500/3 ≈ 166
The maximum number of high-grade shoes that can be produced, H ≤ 166
Therefore, for maximum profit, the factory should produce the maximum number of high-grade shoe pairs, H = 166 pairs
The number of pairs of low grade shoes the factory should produce, L = 500 - 166 = 334 pairs
The maximum profit, P = 2 × 166 + 1 × 364 = 696
steve walks 3 kilometers a day how many meters does he walk in 3 days??
Answer:
9,000 m
Step-by-step explanation:
1 km = 1,000 m
3 * 3 = 9 km
9 * 1,000 = 9,000 m
Answer:
9000m in 3 days.
hope it helps.