Answer:
23 .7 ruim
57.2 sol
32 .8 mais ou menos
tchau bj
40 people can ride the roller coaster every 15 minutes. How many people can ride the roller coaster every 3 hours?
Answer:
480
Step-by-step explanation:
Answer:
486 people can ride the roller coaster in 3 hours
Step-by-step explanation:
40÷15 = 2.7
2.7 × (60×3)
2.7×180= 486
Part of the population of 6,000 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 9 of them are infected. How many elk are likely to be infected?
Answer:
Based on the sample, the probability of an elk being infected is 2/50. Multiply this by the number of elk: 2/50(6000) = 240
Step-by-step explanation:
A long-distance delivery truck averages 8 miles per gallon when the truck is full. The
miles per gallon improves by 20% when the truck is empty. If the truck travels 160 miles
full to deliver its goods, and then travels back 160 miles empty, approximately how many
gallons will the truck use in all?
The gas used by truck is 36.66 mpg.
What is linear equation?When graphed, a linear equation always produces a straight line because it is an algebraic equation with each term having an exponent of 1. It is referred to as a "linear equation" for this reason.
One-variable linear equations and two-variable linear equations exist.
Given
A long-distance delivery truck averages 8 miles per gallon when the truck is full.
The miles per gallon improve by 20% when the truck is empty.
The distance delivery truck averages 8 miles per gallon when full, and the amount of gasoline used (g) is expressed in terms of the number of miles driven ([tex]m_{f}[/tex]).
When the truck is full, the amount of gasoline is shown as,
[tex]m_{f}[/tex] = d/8
given distance is 160 miles
[tex]m_{f}[/tex] = 160/8 = 20 mpg
Then,
The miles per gallon improve by 20% when the truck is empty.
The number of miles driven when empty is represented as,
[tex]m_{e}[/tex] = d/(8 + 1.6)
[tex]m_{e}[/tex] = d/9.6
[tex]m_{e}[/tex] = 160/9.6
[tex]m_{e}[/tex] = 16.66 mpg
total gasoline required = [tex]m_{e}[/tex] + [tex]m_{f}[/tex] = 20 + 16.66 = 36.66 mpg
Hence the total gas used is 36.66 mpg.
Learn more about linear equation;
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DE is a midsegment of AABC. Find the value of x.
A
х
D
B
E
6
-
X=
please HELP 30 points
1+ 1092 divided by 63 mulitlpyed by 45 =
Answer:
780.714
Step-by-step explanation:
Answer:=781
Step-by-step explanation:
Which expressions are polynomials? Select each correct answer. x2−x√+2 2 + s 4x³ + y
Answer:
Answers are
Y
2+s
4x^3+y
Step-by-step explanation:
you need to answer A and B!!! PLEASE HELP
Answer:
13x+14
Step-by-step explanation:
because the original equation would be 5x(2)+3x+7(2) simplified would be 13x+14
Which set of ordered pairs represents y as a function of x?
Ethen is ‘x’ years old. Raj is 8 years older than Ethen. Find the sum of their ages in 6 years time.
Answer:
The sum of their ages in 6 years time is (2x+20) years.
Step-by-step explanation:
Given that,
Ethen is ‘x’ years old.
Raj is 8 years older than Ethen.
Raj's age = (x+8) years
We need to find the sum of their in 6 years.
After 6 years,
Ethen's age = (x+6) years
Raj's age = (x+8)+6
= (x+14) years
Sum of ages = (x+6) + (x+14)
= 2x+20
Hence, the required answer is (2x+20) years.
A study was conducted to investigate whether the mean price of a dozen eggs was different for two different grocery stores, Store A and Store B, in a large city. A carton of one dozen eggs from each store was randomly selected for each of 35 weeks, for a total sample size of 35 cartons from each store. The mean price of the 35 cartons was recorded for each store. The difference in the mean carton price for the stores will be calculated.
Which of the following is the appropriate test for the study?
A one-sample z -test for a population proportion
A one-sample t -test for a sample mean
A matched-pairs t -test for a mean difference
A two-sample t-test for a difference between population means
A two-sample z-test for a difference between population proportions
Answer:
A two-sample t-test for a difference between population means
Step-by-step explanation:
Answer:
D) A two-sample t -test for a difference between population means
Step-by-step explanation:
Two random samples are selected on a quantitative variable, and the difference in the sample means will be calculated. The appropriate test is the two-sample t-test for a difference in population means.
25 points pls help
which of the following rational functions is graphed below?
Step-by-step explanation:
The answer is C I gotchu .....
Answer:
C.
Step-by-step explanation:
(✿◡‿◡) <-- she wants Brainliest
Tell ur mom she did a good job makin such a cute girl ✪ ω ✪ バイバイ～。!
f (x)= 1-x
___
1+x
show that ff (×)= x
Answer:
mhmhmh
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
the qhfjibv clicks its 2
6. The human brain weighes about 1 pounds for each 100 pounds of body weight. What
is the approximate weight of the brain of a person who weighs 85 pounds. Round to
the nearest ounce.
all
I did a proportion and I think the answer is 13.6 or 14 after being rounded
What are the zeros of the function h(x)=2x2+x−15
?
A
x=−3andx=−52
B
x=−3andx=52
C
x=−52andx=3
D
x=52andx=3
i’m a little bit confused for this one i just need to know what doesn’t belong
Answer:
C
Step-by-step explanation:
there is no other line
Members of the school orchestra are organizing a trip to a concert. If tickets cost $14 each, how many tickets can be purchased with $500? The concert hall offers a special price of $12 per ticket. How many more tickets can be purchased with the $500 if the cost is $12 per ticket?
Answer:35
Step-by-step explanation:
I did this and got it correct
Answer:
Here you are! Hope this helps
14m - 9n + 2n -3(3m - 4)
Answer:
14m-7n-3
Step-by-step explanation:
Answer:
5m-7n+12
Step-by-step explanation:
15 NEED HELP ASAP WILL GIVE BRAINLY
Answer:
The first answer is correct because the angle it gives you in the 3rd picture at the bottom left is congruent with X, therefore makeing the X 100.
Step-by-step explanation:
helppp asap please!!
Answer:
p= 8250
r=7.25
t= 3 years
p×r×t
figure out the rest
hii please help i’ll give brainliest
Answer:
X>3
Step-by-step explanation:
1 picture 2 questions please help
Answer:
7)It is possible for two rectangles to have the same area but not the same perimeter 8) 8cm
Step-by-step explanation:
Sam put a 12-inch ruler into a cup. If 3 inches of the ruler were sticking out of the top of the cup, how deep was the cup?
Answer:
9 inches deep
Step-by-step explanation:
12 inches - 3 inches = 9 inches
Help ASAP! Use the graph to answer the question
Answer:second 1
Step-by-step explanation:
Answer:
The blue line models the data points better than the red line. It is because the data points are all close to the line.
What is the measure of angle D?
A. 75°
B. 80°
C. 95°
D. 110°
Answer:
110%
Explanation:
hat is the slope and y-intercept of the linear function?
y = -8x + 2
Answer:
Slope: -8
y-intercept: (0,2)
Step-by-step explanation: Hope this helped! Use the slope intercept form to find the slope and y.
If angle 2 = 117°, find angle 8
Answer:
180- 117 = 63
Step-by-step explanation:
Simplify. Express your answer as a single fraction in simplest form.
x x
5
Answer:
[tex]\frac{x}{20}[/tex]
Step-by-step explanation:
Given
[tex]\frac{x}{4}[/tex] - [tex]\frac{x}{5}[/tex]
The LCM of 4 and 5 is 20
= [tex]\frac{5x-4x}{20}[/tex]
= [tex]\frac{x}{20}[/tex]
Can you please solve this
Answer: [tex]\frac{2(x-7)}{5(x-3)(x-2)}[/tex]
Step-by-step explanation:
I'll do the fraction on the left, then the one on the right. Follow the screenshots below to help you out.
1. Use distributive property. The first of the images is me distributing all the values on the fraction on the left. Now I will do the ones on the left.
2. I used the same method. Now I will multiply the two.
3. [tex]\frac{2(x-7)}{5(x-3)(x-2)}[/tex]
n is less than or equal to 13
Answer:
n ≤ 13
Step-by-step explanation:
≤ is a symbol used to show less than or equal to. Since n is less than or equal to 13, you will put it like n ≤ 13.
. A dice is thrown once. Find the probability of getting (i) An even number (ii) a number greater than 6