when the equation has a value of 0 of course the coin lands, so we need to find what x leads to that value.
-16x^2-16x+60=0
We can first divide by 4 on both sides.
-4x^2-4x+15=0
Now multiply -1
4x^2+4x-15=0
(2x-3)(2x+5)=0
x=3/2 or -5/2
But because how many seconds have to be positive, x=-5/2 is an extraneous solution.
The time it have to stay in the air is 3/2 seconds.
HELP MEE i really need help on this
Answer:
7/45
Step-by-step explanation:
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Avery has a loyalty card good for a discount at her local pharmacy. The item she wants to buy is priced at $6, before discount and tax. After the discount, and before tax, the price is $5.04. Find the percent discount.
Answer:
16%
Step-by-step explanation:
$6 divided by $5.04 = 0.84
0.84 x 100 = 84%
100 - 84 = 16
6 - 5.04 = 0.96
0.96 divided by 6 = 0.16
0.16 x 100 = 16
What did Samuel do wrong??? Samuel said 2.25 + 1.75 + 0.5 = 3.50 what did he do wrong? Choose....what he did wrong
Answer: 4.50
Step-by-step explanation:
.5 is = to .50 so that means that your going to add 2.25+.50= 2.75 and then add another 1.75 and get 4.50 as your answer:)
What is the outlier for the data set?
A. There is none
B. 5
C. 10
D. 9
Answer:
it is 5 5 5 5 5 5 5
Step-by-step explanation:
help me with the question
Answer:
What is the question?
Step-by-step explanation:
Answer:
Where is the da mn question you stupendous
Step-by-step explanation:
what Is the smallest number to be added to 322 to make it divisible by 3?
Whitney has £12 pocket money.
She spends 50% of her pocket money on
magazines.
She spends 33% of her pocket money on apps.
How much pocket money does she have left?
Show the steps in your working.
Answer:
74389
Step-by-step explanation:
5784073
30695
76
572
WILL GIVE BRAINLST
HAVE AN AMAZING DAY :)
Answer:
D, 12 units, j and L, 25.3 units
Step-by-step explanation:
Hop3 it helps :)
on monday delilahs family drives 45 1/3 miles each hour
Answer:
15 total miles each hour
Step-by-step explanation:
for this situation and the information given in the question, all we have to do is divide the total amount by 3 (since its 1/3) to get the amount of total miles they drove at, wich is the speed they drove in this case
(sidenote: kinda slow if ya ask me but ok XD)
hope this helps you :D
at Mountain Park Middle School there are 250 7th grade students currently 32% of those students are in advanced math
Answer:
95
students in the seventh grade have taken swimming lessons.
Explanation:
We calculate
38
%
of
250
using the following formula:
x
=
250
×
38
100
x
=
25
0
×
38
10
0
(cancel by 10)
x
=
5
25
×
38
2
10
(cancel by 5)
x
=
5
×
19
38
1
2
(cancel by 2)
x
=
5
×
19
x
=
95
Step-by-step explanation:
1. Express the following expression in the form y = a(x - h)? + k
y = - x² + 4x +1
Answer:
Step-by-step explanation:
y = -x² + 4x + 1
factor out the leading coefficient
y = -(x² - 4x) + 1
complete the square
y = -(x² - 4x + 2²) + 2² + 1
y = -(x-2)² + 5
Can someone Identify the coefficient in the expression 5 + 19b?
Answer:
19
Step-by-step explanation:
whenever a number is behind a variable (letter) its always a co efficient.
in OPQ the measure of Q is 90 the measure of O is 46 and QO 34 feet what is the length of OP to the nearest tenth of a foot
Answer: 48.9
Step-by-step explanation:
i just did it on delta math
Select the three ratios that represent the number of red cars to blue cars.
Answer:
4 red cars 6 blue cars
Step-by-step explanation:
Find the area of this parallelogram.
6 cm
8 cm
15 cm
Answer:
90 cm
Step-by-step explanation:
15 x 6 = 90
Paolo is using his grandmother's breakfast bar recipe. He always doubles
the amount of yogurt and oats. The recipe calls for 2 1/2 cups of
yogurt.
The total amount of yogurt and oats after doubling is 6 1/3 cups. Write an
equation to find the original amount of oats in the recipe.
I just need the equation i don't need the answer!!!! pls help me!!!!
Answer:
[tex]6\frac{1}{3}[/tex] = [tex]2\frac{1}{2}[/tex] * 2 + [tex]\frac{x}{2}[/tex]
Step-by-step explanation:
lets start with what we know.
the recipe calls for 2 [tex]\frac{1}{2}[/tex] cups of yogurt. and Paolo doubles the recipe. so multiply the recipe for yogurt by 2
2 [tex]\frac{1}{2}[/tex] * 2 = 5 cups of yogurt.
the total of yogurt and oats is [tex]6\frac{1}{3}[/tex] and we know how much yogurt we have so we subtract that from the total of both.
[tex]6\frac{1}{3}[/tex] - 5 = [tex]1\frac{1}{3}[/tex]
the oats after doubling were [tex]1\frac{1}{3}[/tex] cups so u divide it by 2
[tex]1\frac{1}{3}[/tex] / 2 = [tex]\frac{2}{3}[/tex] before doubling
How to write 9/10% as a fraction?
Answer: 90%
Good Luck!
Answer:
90 / 1 your welcome
what is the amount of change for this 25 is decreased to 17
Answer:
20.75 Absolute change
Step-by-step explanation:
1.Assume that 20 squirrels are put in an enclosed wildlife ranch and the squirrel population grows for the next 5 years, as shown in the table.
Year
Rabbit Population
0
20
1
80
2
320
3
1280
4
5120
5
20,480
Write a function that represents this.
2.A second group of 20 squirrels of a different breed is placed on a different ranch. The population of squirrels triples each year. Write an equation to model this situation.
3.Had the second group started with 40 squirrels instead of 20, which population will be bigger by year 3 and by how much?
Answer:
For the first group we have the pairs:
year population
0 20
1 80
2 320
3 1,280
4 5,120
5 20,480
Here we can see that the population quadruples each year
(4*20 = 80, 80*4 = 320, 320*4 = 1,280, etc...)
then the population equation is:
P(0) = 20
P(1) = 20*4
P(2) = (20*4)*4 = 20*4^2
We already can see the pattern, then we can write this relationship as:
P(t) = A*(4)^(t)
Where:
t represents time in years, and A is the initial population, that we know it is 20, then:
P(t) = 20*(4)^t
This is the function that represents the table.
B) Now we have a group of 20 squirrels and the population triples each year, with the same reasoning than before we can write the equation that models this situation as:
Q(t) = 20*(3)^t
C) Now, if the initial population of the second group is 40, the equation becomes:
Q(t) = 40*(3)^t
The population by year 3 is given by replacing t by 3, then:
Q(3) = 40*(3)^3 = 1080
And the population of the other group in year 3 is seen in the table, it is 1,280, then the population of the first group is bigger by year 3, and it is greater by:
1,280 - 1,080 = 200
So the first group is larger by 200 squirrels.
This question is 4 marks but it’s only giving me 2 and I don’t know what else to put
Answer:
I don't remember how but you need to work out the frequency, because what you're using is the cumulative frequency.
Choose the solution to this inequality.
72≥b+95
b≥25
b≤1710
b≤−23
b<227
Step-by-step explanation:
I hope this helped:) answer # c.
Use the distributive property to write an equivalent expression. 4(x+2)
Answer: 4x+8!
Step-by-step explanation:
Multiply the 4 by x and then multiply the 4 and 2 and bam!
A pizza slice is cut into 8 equal slices.
a. What fraction of the pizza is each slice?
b.Mandy eats 2 slices. What fraction of the pizza did Mandy eat?
c. Use multiplication to explain how you found the answer to b.
Answer:
a. 1/8
b. 1/4
c. She ate 2 out of the 8 pieces if you divide both by 2 you get 1 and 4 to make it the fraction 1/4
Step-by-step explanation:
WILL GIVE BRAINLIEST
Solve for x. Leave your answer in simplest radical form
Answer:
The answer is [tex]\sqrt{25}[/tex]
Step-by-step explanation:
Please mark brainliest
WILL GIVE BRAINLIEST FOR CORRECT ANSWER!
Please help, I need an answer.
Answer:
y=-1/3x-11/3
(Not sure what point slope form is, but this is the equation for the points)
I need help eeeeeeeeeeeeeeeeee
Answer:
i havent did this in years BUt i will try the top would be the same as the bottom
Step-by-step explanation:
Answer:
Length × breadth × height
20×22×2= 880m cube
what is the quotient of 267.72 and 4.6?
3x + y=11
-2x + y=1
Solve using substitution method
Answer:
3x+yl=11
-2x+y=11
y=11-3x
-2x+11-3x=11
-5x=11-11
so x=0
y=11-0
y=11
Please help me.
The answers are
A (3, -2
B (1,14)
C (4,3)
D (2,9)
Answer:
c. (4,3)
Step-by-step explanation:
If you look at all the rest of the coordinates, compared to (4,3). None of them are in the red area. They are either in the blue, or the orange. To be a solution it has to be in both areas, (the red). Hope this helps!