Answer:
d. -3.5Step-by-step explanation:
[tex]m(t)=\dfrac{t^2-8t-20}{t+5}\\\\m(5)-\text{substitute}\ m=5:\\\\m(5)=\dfrac{5^2-8\cdot5-20}{5+5}=\dfrac{25-40-20}{10}=\dfrac{-35}{10}=-3.5[/tex]
HELP PLEASE!!! STATISTICS
Answer:
its b
Step-by-step explanation:
its b i for some reason got it right
Brianna bought a bicycle for $275.It is now on sale for $150. Find the percent of change of change in the price. Round to the nearest percent.
Answer:
45%
Step-by-step explanation:
First we find the difference between the prices,
[tex]275-150[/tex]
is 125
and
[tex]125/275=0.454545454545.....[/tex]
which in percentage is
[tex]45.4545454...[/tex]
and that rounds to 45%
What is the value of the expression 2x2 + 5x – 6 when x = 2?
Answer:
2×2^2 +5×2 -6
= 2×4 +10 -6
= 8+10-6
= 18-6
= 12
A man walks around a circular park 4 times in 12 minutes. The radius of the park is 49m. Find the speed of the man in km/ h.
Chelsea is budgeting for her trip to the mall. She
does not want to spend any more than $140. If
she wants to buy a dress that costs $28.50 and
I some shirts that cost $20.75 each, how many
shirts can she buy? Use the inequality to help
solve the problem.
140 > 28.50 + 20.75x
Answer:
Chelsea can buy 5 shirts.
Step-by-step explanation:
Subtract 28.50 from 140. This is because subtraction is the inverse of addition, so it will cancel out. 111.50 > 20.75xDivide both sides by 20.75. Division is the inverse of multiplication. 5.3734939759 > xYou can't split shirts when buying them, so Chelsea can buy 5 shirts.
A bathtub filled with 40 gallons of water drains at an average rate of 3 p minute what is the rate of change and initial value of the linear function that models the amount of water in the bathtub after starts draining
Answer:
The rate of change = 3 gallons of water per minute
initial value = 40 gallons of water
Step-by-step explanation:
Initial volume of the bathtub = 40 gallons of water
Average rate of drain = 3 gallons of water per minute
what is the rate of change and initial value of the linear function that models the amount of water in the bathtub after starts draining?
The rate of change is 3 gallons of water per minute and initial value is 40 gallons of water
Solve for t: t - 2 = 10
Question 3 options:
t = 2
t = 8
t = 10
t = 12
Answer: t=12
Step-by-step explanation:
t-2=10
add 2 to both sides of the equation
t=12
Solve: negative 1 over 2 x + 1 = −x + 8 (5 points)
a
7
b
1 over 2
c
14
d
18
Answer:
14
Step-by-step explanation:
An airplane takes off from point A in a straight line, as shown in the diagram. The distance from A to E is?
Answer:
11700
Step-by-step explanation:
plato
Answer:
11700
Step-by-step explanation:
I NEED ANSWER ASAP. BRAINLIEST
Answer:
Wait I just realized, none of them are cubic? for a polynomial to be cubic it needs to be [tex]x^{3}[/tex]
What is the value of the x variable in the solution to the following system of equations?
4x + 2y = 6
x - y = 3
Answer:
The solution is x=2 and y=-1
Step-by-step explanation:
(step 1)
4x + 2y = 6
x - y = 3 - then multiply by 2
4x +2y = 6
2x -2y = 6 then add
6x x = 12 x = 12/6 = 2
Substitue back in (step 1)
4 x 2 + 2y = 6
8 + 2y = 6
Answer is = 2y = -2 y= -1
Solution: x= 2
y= -1
can someone please help me?? i’ll make you a brainliest.
Answer:
-4/1
Step-by-step explanation:
Answer:
i;m pretty sure your answer is -4/1
Step-by-step explanation:
i hope this helped you
You have piano lessons every fourth day and guitar lessons
every sixth day. Today you have both lessons. In how many days will
you have both lessons on the same day again? Show your work.
Solve 3.8 = 2x - 11.2.
X=__
Answer:
x= 15/2 im pretty sure
Step-by-step explanation:
We want to solve the given linear equation, we will find that the solution is x = -3.7
Solving linear equations:
Here we have the equation:
3.8 = 2*x - 11.2
We want to solve this for x, so we can start by subtracting 11.2 in both sides to get:
3.8 - 11.2 = 2*x
-7.4 = 2*x
Now we can divide both sides by 2:
-7.4/2 = x = -3.7
So the solution is x = -3.7
If you want to learn more about linear equations, you can read:
https://brainly.com/question/4074386
Pls help! What is mSN ?
Answer:
ur ugly face
Step-by-step explanation:
ooooooooooooooooooooooooooooooo
Questlon 2 of 10
The amount of time between interest payments is known as:
A. simple interest.
B. interest.
C. principal.
D. period
SUBMIT
Answer: D) Period
You could refer to this as the time period. Usually the time period is in months. So you make monthly interest payments, often with the principal mixed in somewhat.
what the number 820.681 in expanded form using powers of 10
Answer:
[tex]820.681 = 8 \times 10^2 + 2 \times 10^1 + 6 \times 10^{-1} + 8 \times 10^{-2} + 1 \times 10^{-3}[/tex]
Step-by-step explanation:
[tex]820.681 = 8 \times 100 + 2 \times 10 + 6 \times 0.1 + 8 \times 0.01 + 1 \times 0.001[/tex]
[tex]820.681 = 8 \times 10^2 + 2 \times 10^1 + 6 \times 10^{-1} + 8 \times 10^{-2} + 1 \times 10^{-3}[/tex]
Write a summary can Smartphones improve student lives? why or why not ( in your own words )
Answer:
Smartphones can imrove student lives by giving students the ability to contact their teachers to ask questions or comment on a specific work. they can also allow the student to look up answers and learn from what others think. Smartphones can also add distractions in class and allow an easy way to cheat on a test or a quiz. Overall Smartphones can be beneficial and harmful to a students life.
Step-by-step explanation:
jack is paid £1800 a month. he spends half his money on rent. he spends the rest on food, bills and savings in the ratio 4:3:2 how much does he spend on bills?
Answer:
£300.
Step-by-step explanation:
He has £900 left after paying rent.
The fraction he spends on bills = 3(4+3+2)
= 3/9
= 1/3.
So he spends 900 * 1/3 = £300 on bills.
What is the value of 6(2b-4) when b =5
Answer:
Step-by-step explanation:
6(2b-4) sub 5 for b
6(2(5)-4)
6(10-4)
60-24
36
Which of the following is the graph of f (x + 3)?
Answer:
I'd say it's C... that's shift on x-axis and the plus symbolizes the shift in the minus "region" because that's swapped you count how many steps you have to go to get to the zero.
Express each ratio as a fraction in the simplest form
12 blue cars out of 48 cars
Reupload please help this is due in 2 hours DONT ANSWER IF U DONT KNOW:)
help! i'm not sure how do this so if someone can explain that would be nice :)
Answer:
In slope intercept form it would be y=-1/2x+3
Step-by-step explanation:
THIS IS AN EXAMPLE ON HOW TO GET SLOPE INTERCEPT FORM. start with the point slope form y-y1=m(x-x1) and solve for y. y-8=2(x-6) so y-8=2x-12, add 8 to end up with y=2x-4. 2) start with slope intercept form and solve for b, then substitute that back in: y=mx + b, so 8=2(6)+b, 8=12+b, subtract 12 to get b=-4, therefore equation is y=2x-4.
what is the nearest integer of 3^ square root 74
Answer:
74
Step-by-step explanation:
A bag contains 6 blue marbles, 8 green marbles, 9 red marbles, and 17 yellow marbles. What is the ratio of blue marbles to total marbles?
Answer: 3:20
Step-by-step explanation: There are 6 blue marbles. Altogether, there are 40 marbles. So it would be 6:40, which simplifies to 3:20.
Gabriella ran several laps around a 1/4-mile track. Then she ran 2 1/2 miles on a trail. In all, she ran 4 miles. Write and solve an equation to find l, the number of laps Gabriella ran.
9514 1404 393
Answer:
1/4×l +(2 1/2) = 4l = 6Step-by-step explanation:
For l laps around a 1/4 mile track, the total distance is ...
l×(1/4)
After adding 2 1/2 miles to that, Gabriella's total distance was 4 miles:
l×(1/4) +(2 1/2) = 4 . . . . an equation to find l
__
We can solve this equation by subtracting 2 1/2, then multiplying by 4.
l×(1/4) = 1 1/2
l = 4(1 1/2)
l = 6
Gabriella ran 6 laps on the track.
HELP PLEASE WILL GIVE BRAINLY
Answer:
The constant of proportionality is 3
Step-by-step explanation:
Use equation y=kx where k is constant of proportionality.
y/x is it. so 12/4=3
3
Hurrrryy i neeed hellp The Egyptians needed to know the _________ of everyone’s land so they could determine the amount of taxes one would pay for that land.
A.
inhabitants
c.
shape
b.
size
d.
Egyptians did not pay tax
Answer:
d. Egyptians did not pay tax
Step-by-step explanation:
If the Egyptians were to pay tax from land they would use the area of the land.
Answer:
size I think, sry if wrong(
Suppose babies born in a large hospital have a mean weight of 3831 grams, and a variance of 108,900. If 65 babies are sampled at random from the hospital, what is the probability that the mean weight of the sample babies would be less than 3882 grams? Round your answer to four decimal places
Answer:
0.8944
Step-by-step explanation:
We start by calculating the z-score
To calculate the z-score, we shall need the standard deviation
Mathematically, standard deviation is square root of variance
that will be; SD = √108,900 = 330
Formula for z-score is;
x-mean/SD/√n
where n is 65 in this case
z-score = (3882-3831)/330/√65 = 1.25
The probability we want to calculate is;
P( X < 1.25)
we can use the standard normal distribution table for this
Using the table;
P( X < 1.25) = 0.89435 which is 0.8944 to 4. decimal places
Answer:
0.8944
Step-by-step explanation: