Answer:
It will be 5 seconds before the ball hits the ground
Step-by-step explanation:
∵ A ball is thrown from the top row of seats in a stadium
∵ The function
∵ h(t) = −16t² + 64t + 80 , gives the height, in feet, of the ball t seconds
after it is thrown
∵ The ball hits the ground
→ That means h(t) = 0
∵ h(t) = 0
∴ 0 = -16t² + 64t + 80
→ Reverse the two sides
∴ -16t² + 64t + 80 = 0
→ Divide both sides by -16 to simplify it
∵ [tex]\frac{-16t^{2}}{-16}+\frac{64t}{-16}+\frac{80}{-16}=\frac{0}{-16}[/tex]
∴ t² - 4t - 5 = 0
→ Factorize it into two factors
∵ t² = t × t
∵ -5 = -5 × 1
∵ -5t + 1t = -4t ⇒ the middle term
→ The factors are (t - 5) and (t + 1)
∴ (t - 5)(t + 1) = 0
→ Equate each factor by 0 to find t
∵ t - 5 = 0
→ Add 5 to both sides
∴ t = 5
∵ t + 1 = 0
→ Subtract 1 from both sides
∴ t = -1 ⇒ rejected because no negative value for the time
∵ t = 5
∴ It will be 5 seconds before the ball hits the ground
Simplify the following expression:
69 + 12 - 49 + 5
Answer:
86-49. 86-49= 37
Step-by-step explanation:
you add 69+5+12=86
then you subtract 49
and get 37
-1/2 + 3/4 - 3/8 what is it?
Answer:
-1/8
Step-by-step explanation:
-1/2 + 3/4 - 3/8 = -1/8
Can I have Brainliest please?
Answer:
[tex]\frac{-1}{8}[/tex]
Step-by-step explanation:
So first find the greatest common factor of the denominators
GCF of 2 , 4 and 8 is 8
Then :
[tex]\frac{-4 + 6 - 3}{8}[/tex]
So you do this to get the above answer:
8 divided by the denominator times the numerator.
You still need to work it out
-4 + 6 = 2
[tex]\frac{2- 3}{8}[/tex]
2 - 3 is -1
Thus the answer is [tex]\frac{-1}{8}[/tex]
HOPE THIS HELPED
PLEASE HELP
Write a word problem with the numbers -3 and 6 that result in -9
Answer:
6+-3 =-9
Step-by-step explanation:
so if u add a positive number to a negative number the whole answer is a negative number i
hey i need some help with this
Answer:
82 degrees
Step-by-step explanation:
if lines m and n are parallel then the two angles are equivalent. The angles on the opposite side are 98 degrees.
Help!!!!!!!!!!!!!!!!Will mark BRAINLIEST
Answer:
Step-by-step explanation:
1. true
2. true
3. false ( pie chart )
4. true
5. false ( y axis )
6. true
7. true
Hope this helps
plz mark as brainliest!!!!!!
The money earned varies directly to how many hours you work. Working 12 hours you earn $102. If Josue worked 8 hours, how much would he earn?
Answer:
about 94
Step-by-step explanation:
All I did was subtract then added I multiplied rounded then dot my answer
Please show all work
Answer:
w = 19/15 or 1 4/15
Step-by-step explanation:
11/15 = w-(8/15) // - w-(8/15)
11/15-w+8/15 = 0
19/15-w = 0 // - 19/15
-w = -19/15 // * -1
w = 19/15
w = 19/15
[tex]\bold{Hello!}\\\bold{Your~Answer~Is~Below!}[/tex]
______________________________
[tex]\bold{Solution~Steps:}[/tex]
[tex]1.)~Swap~sides~so~that~all~variable~terms~are~on~the~left~hand~side:[/tex]
[tex]\bold{\frac{11}{15} =w-\frac{8}{15}}~=~\bold{w-\frac{8}{15}=\frac{11}{15} }[/tex][tex]2.)~Since~\frac{11}{15} ~and~\frac{8}{15}~have~the~same~denominator,~add~them~by~adding~their~numerators:[/tex]
[tex]\bold{w=\frac{11+8}{15}~=~\frac{19}{15}}[/tex]______________________________
[tex]\bold{Answers:}[/tex]
[tex]Improper~Fraction~Form:\bold{w=\frac{19}{15}}[/tex][tex]Mixed~Number~Form:\bold{w=1\frac{4}{15}}[/tex][tex]Decimal~Form:\bold{w=1.266666667}[/tex]______________________________
[tex]\bold{Hope~this~helps,}\\\bold{And~best~of~luck!}\\\\\bold{~~~-TotallyNotTrillex}[/tex]
To prepare for a bake-off, Dan used 0.68 kilogram of flour each day for 4 weeks. How many grams did Dan use in those 4 weeks? (1 kg = 1,000 g) this question is from Zearn and I've been doing the same one for a week now :3 and no im not in highschool it put that for some reason
Answer:
19040 grams
Step-by-step explanation:
Dan used the amount of flour each day = 0.68 kg
He used the flour for 4 weeks.
So the number of days taken by Dan = 4 × 7 = 28 days
Now amount of flour used in 28 days = Flour used in a day × Number of days
= 0.68 × 28
= 19.04 kg
Since 1 kg = 1000 grams
Therefore, 19.04 kg = 1000 × 19.04 = 19040 grams
Dan used 19040 grams of flour in 4 weeks.
The number of grams of flour that was used is 19040 grams.
Since Dan used 0.68 kilogram of flour each day for 4 weeks, this means that the flours used will be:
= 0.68 × 4
= 2.72kg
Therefore, 2.72kg will be converted to grams and this will be:
= 2.72 × 1000 = 2720 grams
Now, we'll multiply the value by 7 since there are 7 days in a week. This will be:
= 2720 × 7 = 19040
Read related link on:
https://brainly.com/question/17025675
idk how to do this please help 1/5 + 2/15 =
Answer:
2/3
Step-by-step explanation:
you can turn 1/5 into 3/15
3/15 + 2/15 = 5/15
5/15 = 2/3
Select each inequality that 0 is a solution to. Q No. 2
-3(y - 1) > 3
2y - 4 0
y + 8 < 2y + 8
Answer:
Can you reformat?
So far, 0 is a solution to none of these.
Answer:
1. nope
2. not sure
3. nope
Step-by-step explanation:
1.
-3(y - 1) > 3
-3y + 3 > 3
-3y > 0
y > 0
0 is not a solution since 0 is not greater than 0
2.
I'm not sure what this question means, is there a [tex]\geq or \leq[/tex] between the 4 and the 0?
3.
y + 8 < 2y + 8
8 < 2y - y + 8
8 - 8 < y
0 < y
0 is not a solution because 0 is not greater than 0
im confused- I prolly got something wrong.
Tonya’s dog-walking service charges a flat rate of $20 per month, plus $3 per mile that each dog is walked. Beth does not charge a monthly fee for her dog-walking service, but she charges $5 per mile that each dog is walked.
You need to include the question not just the explanation.
hayley jogs 3/4 miles in 1/6 of an hour
maxwell jogs 2/3 miles in 2/15 who is faster and how much faster
Maxwell is faster and faster by 0.5 miles/hour.
Given that, Hayley jogs 3/4 miles in 1/6 of an hour and Maxwell jogs 2/3 miles in 2/15.
We need to find who is faster and how much faster.
What is an average speed?An average speed is the total distance travelled divided by the total time travelled. The formula to find the average speed is Average speed = Total distance / Total time.
Now speed of Hayley= 3/4 ÷ 1/6
=3/4 × 6=9/2
=4.5 miles/hour
Speed of Maxwell= 2/3 ÷ 2/15
= 2/3 × 15/2 = 5 miles/hour
The difference in the speed =5-4.5=0.5 miles/hour
Therefore, Maxwell is faster and faster by 0.5 miles/hour.
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https://brainly.com/question/17277454.
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I NEED HELP ASAP.
A factory manufactures 7.1x10⁵ bottles of ketchup per month. How many bottles are manufactured in a year?
Answer:
8,520,000
Step-by-step explanation:
hope it help
Step-by-step explanation:
factory manufactures 71*10^5 bottles of ketchup per month.
In a year:
71*10^5*12=71*12*10^5=852*10^5=852*100000=
85200000 bottles of ketchup in a year.
If f(x) = 3x - 1 and g(x) = x + 2, find (f + g)(x).
Answer:
4x + 1
Step-by-step explanation:
Multiply f + g by x because f + g is in parenthesis:
f(x) + g(x)
Then implement equation #1 for f(x) into our equation:
3x - 1 + g(x)
Then implement the other equation for g(x) into our equation:
3x - 1 + x + 2
Then switch the positions of -1 and +x:
3x + x - 1 + 2
Simmplify:
4x + 1
Pls consider giving my answer the Brainliest! Because it would help and mean a lot! ; )
4. If your bill at a restaurant is $30 and you want to tip 20%, how much
should you tip. Enter the number only. Round to the nearest cent.
Answer: 6
Step-by-step explanation:
30 divided by 10 = 3 (aka 10%)
3 x 2 = 6 (20%)
Answer: Tip Total:$ 6.00 Total (Bill + Tip):$ 36.00
Step-by-step explanation: Yes you should tip
PLZ HELP!! 50POINTS BRAINLYEST IF CORRECT ANSWER IF U GIVE BAD ANSWER OR JUST SOMTHING RANDOM OR SAY HOLD UP ONE SEC I WILL REPORT I REALLY NEED THIS TO BRONG UP MY GRADE WILL GIVE U 50 more if u want I have 900 points
Answer:
see below
Step-by-step explanation:
-6 4/9 - 3 2/9 - 8 2/9= -6 4/9 - 3 2/9 = -9 2/3
= -9 2/3 - 8 2/9
= -17 8/9
-12.48 - (-2.99) - 5.62= -12.48 + 2.99 + 5.62
= -15.11
-19 2/9 - 4 1/9 - ( -3 4/9)= -173/9 - 37/9 + 31/9
= -179/9
= -19 8/9
-353.92 - (-283.56) - 131.29= -353.92 + 283.56 - 131.29
= - 201.65
83 1/5 - 108 2/5 - ( - 99 1/5)= 416 - 542 + 496
5
= 74
Let event A = The student plays basketball.
Let event B = The student plays soccer.
What is P(AB)?
P(A|B) = 1/3
What is Venn diagram?
"A Venn diagram in mathematics is a diagram that uses overlapping circles or other shapes to represent the logical relationships between two or more sets of items. "
What is probability?"For any experiment, a probability denotes the possibility of outcome for any event."
The formula to calculate the probability of an event:For event A, the probability of event A is,
P(A) = number of favorable outcomes/ total umber of outcomes
What is conditional probability?"Conditional probability is the probability of an event occurring given that another event has already occurred."
The formula to calculate the conditional probability:P(A|B) = P(A∩B)÷P(B)
For given diagram:
Let A represents a set of students playing Basketball and B represents a set of students playing Soccer
So, A = {Fran, Ian, Juan, Ella}
⇒ n(A) = 4
B = {Mickey, Marcus, Ella}
⇒ n(B) = 3
(A ∩ B) = {Ella}
⇒ n(A ∩ B) = 1
sample space: S = {Fran, Ian, Juan, Ella, Mickey, Marcus, Mai, Karl, Jada, Gabby}
⇒ n(S) = 10
Now, we calculate probability of B and A∩B.
P(B) = n(B)/n(S)
⇒ P(B) = 3/10
Also, P(A∩B) = n(A∩B) / n(S)
⇒ P(A∩B) = 1/10
So, the required probability would be,
⇒ P(A|B) = P(A∩B) ÷ P(B)
⇒ P(A|B) = (1/10) ÷ (3/10)
⇒ P(A|B) = 1/3
Therefore, P(A|B) = 1/3
Learn more about probability here:
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Hi, i would really appreciate if someone helped me out!
A corner store sells two kinds of baked goods: cakes and pies. A cake costs $11 and a pie costs $10. In one day, the store sold 11 baked goods for a total of $117. How many cakes did they sell?
Answer:
7cakes and 4 pies
Step-by-step explanation:
HELP ASAP! PLEASE!
What relationship between the population of Ohio and the number of years displayed in the scatter plot
Answer:
The number line has to be shown in a picture if you want more specific instructions from others.
Step-by-step explanation:
Show a picture
Ashley practiced the piano for 41
minutes. She practiced 13 minutes
I less than her brother did. Write and
solve an equation to determine how
long her brother practiced the piano.
Answer:
41+13=54 so Ashleys brother practiced the piano for 51 minutes
Step-by-step explanation:
can someone help me with this?
Answer:
the answer is 200
Step-by-step explanation:
PLEASE HELP! A store receives a shipment of boxes. Each box measures 18 in. wide, 28} in. long, and 14 in. high. What is the volume of each box?
Answer:
7056
Step-by-step explanation:
the volume of the box is 7056.
Jeremiah dad Ordered five large pepperoni pizzas in each large cheese pizzas for the birthday party he spent a total of 144 on pizza if a pepperoni pizza cost 12 right and solve a linear equation to find the cost of a cheese pizza
This question is incomplete because part of the information is missing; here is the complete question:
Jeremiah's dad ordered 5 large pepperoni pizzas and 8 large cheese pizzas for the birthday party. He spent a total of $144 on pizza. If a pepperoni pizza costs $12, write and solve a linear equation to find the cost of a cheese pizza.
The answer to this question is $10.50
Explanation:
The first step to solve this problem is to write a linear equation. In this, the unknown should be represented by an x, and other variables should be included using correct mathematical symbols. Here is the process:
1. In an equation there is always an equality symbol = and mathematical expressions on both sides.
2. In this situation, the value after the = symbol should be 144 or the total spend on pizzas.
3. The values missing should be expressed as 5 (12) + 8x because there are 5 pepperoni pizzas and each of these costs $12; also, this should be added to the 8 cheese pizza and x represents the missing value (the price of a cheese pizza.)
4. Solve the equation
5 (12) + 8x = 144 -Simplify using multiplication
60 + 8x = 144 - Solve by moving the number to the right side and changing the symbol
8x = 144 - 60
8x = 84
x = 84 ÷ 8
x = 10.5
x3 = 0.008 what does the x equal
A student organization sells shirts to raise money for events and activities. The shirts are printed with the organization's logo and the total costs are $100 plus $7 for each shirt, x. The students sell the shirts for $15 each.
Write an expression for the cost AND an expression for the revenue (money earned). Then evaluate for the specified number of shirts.
Solution
Write the expression in the order of the problem.
Cost Expression: Answer
(View hint)
Revenue (Money Earned) Expression: Answer
(View hint)
How much would it cost to make 25 shirts?
$ Answer
How much would students earn if they sold 25 shirts?
$ Answer
Will students make more money than they spent if they make and sell exactly 25 shirts?
Answer:
The answer is below
Step-by-step explanation:
The total cost for producing x number of shirts = 100 + 7x
The price of each shirt is $15, therefore:
Revenue = price per shirt × number of shirts = 15 × x = 15x
Revenue = 15x
The cost of making 25 shirts is given as:
Cost = 100 + 7x = 100 + 7(25) = $275
The money earned from producing 25 shirts is given as:
Revenue = 15x = 15(25) = $375
Since the revenue is greater than cost, the students would make more money than they spent if they make and sell exactly 25 shirts
you earn $25 for washing 5 cars how much do you earn for washing 4 cars
whats the slope of this graph
Mrs. mott called two companies about getting new uniforms for the soccer team. The first company she called charges $70 per uniform. The second company she called charges $280 plus $30 per uniform. For how many uniforms will the cost from the first company be less expensive than the cost from the second company?
Which expression is equivalent?
- 5(2x -3y +4)
Answer:
A
Step-by-step explanation:
what is 6= -4+z what is the answer to that question
Answer:
z=10
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
6=z−4
Step 2: Flip the equation.
z−4=6
Step 3: Add 4 to both sides.
z−4+4=6+4
z=10
Answer:
z is 10
Step-by-step explanation:
Move the terms, Calculate, Change the signs
