Answer:
n = cdm/ab
Step-by-step explanation:
Solving for n:
ab/cd=m/nabn = cdm ⇒ cross- multiplicationn = cdm/ab ⇒ divide both sides by abTriangle A’ B’ C’ is a dilation of ABC. What is AB?
is Ronald correct because 80,000,000 + 6,200 = 142,000,000,000. yes or no
Answer: Yes
Step-by-step explanation:
???
Answer:
No.
Step-by-step explanation:
If we line up the digits we see that:
80,000,000
+ 6,200
= 80,006,200
A vending machine has 5 colors (white, red, green, blue, and yellow) of gumballs and an equal chance of dispensing each.
A second machine has 4 different animal-shaped rubber bands (lion, elephant, horse, and alligator) and an equal chance
of dispensing each. If you buy one item from each machine, what is the probability of getting a yellow gumball and a lion
band? (ANSWER FASTT PLESEE)!
Answer in fraction form = 1/20
Answer in decimal form = 0.05
Answer in percent form = 5%
These are three ways to express the same thing
=============================================================
Explanation:
Assume the gumball machine only has 5 gumballs, one of each color. The probability of getting yellow is 1/5 since there is one that is yellow out of 5 total.
The probability of getting a lion rubber band is 1/4 for similar reasoning as above.
Because the two events (getting yellow, getting a lion) are independent, this means we can multiply the two probabilities to get (1/5)*(1/4) = 1/20
Use your calculator to see that 1/20 = 0.05 which converts to 5% when you move the decimal point over 2 spots to the right.
regina and sam are multiplying (8^4)^5 (7^3)^9
are either one of them correct? Explain your reasoning
Answer:
Sam is correct since he followed the rule of powers.
Reina is incorrect.
Step-by-step explanation:
Rule of a power raised to a power.
[tex] (a^m)^n = a^{mn} [/tex]
To raise a power to a power, multiply the powers.
Sam is correct since he multiplied the exponents correctly.
The population of Florida was 6.7 x 10^6 in 1970. The population increased to 2 x 10^7 in 2010. to the nearest whole number, how many times greater was the population in 2010 then in 1970?
Answer:
The population was 3 times greater in 2010 than in 1970.
Step-by-step explanation:
To find how many times greater the population was, you divide the population from 2010 by the population in 1970.
[tex]\frac{2*10^{7} }{6.7*10^{6} } = 2.985[/tex] ≈ 3
Hope this helps!
population was 3 times greater in 2010
Which is the line shown in the figure?
A. line ac
b. line CE
c.line ae
d. line AB
Answer:
Line CE
Step-by-step explanation:
Which does not represent an integer?
Answer:
The answer is D
Step-by-step explanation:
Let's see all choices in detailA . 0 it is correct because 0 is an integer
B .It seems like rational number but it is not simplified yet so -18 \ 2= -9
C .
[tex] \sqrt{9} = 3 \: so \: it \: is \: also \: integer[/tex]
D . 4\5 it is decimal so it is rational number not integer
I hope u like it
The sum of twice a number and five is 13. Find the number.
4
let the number be x
so by the question , 2x+5=13
solving this we get ,
2x=13-5
2x=8
so x=4
Answer:
the number is 4
Step-by-step explanation:
let the number be ''x''
than twice the number will be 2x
now,
2x + 5 = 13
2x = 13 - 5
2x = 8
x = 8/2
x= 4
In 2003, a remote controlled model airplane became the first ever to fly nonstop across the Atlantic Ocean. The map shows the airplane’s position at three different points during its flight. Point A represents Cape Spear, Newfoundland, point B represents the approximate position after 1 day, and point C represents Mannin Bay, Ireland. The airplane left from Cape Spear and landed in Mannin Bay. Find the total distance the model airplane flew. It flew miles. The model airplane’s flight lasted nearly 38 hours. Estimate the airplane's average speed to the nearest mile per hour. The average speed was about miles per hour.
Answer:
1883 mi is the total distance the model airplane flew.
the average speed is about 50 mi/h
Step-by-step explanation:
PLEASE HELP WITH PRE CALC
Answer:
-3/2
Step-by-step explanation:
The average rate of change is synonymous to the slope.
So, to find the average rate of change from the interval x=-2 to x=2, first find the y-values at x=-2 and x=2.
At x=-2, we can see that y is 4. Thus, we have (-2,4).
At x=2, we can see that y is -2. Thus, we have (2,-2).
Now, use the slope formula. The formula for slope is:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Let (-2,4) be x₁ and y₁ and let (2,-2) be x₂ and y₂. Therefore:
[tex]m=\frac{-2-4}{2--2}[/tex]
Simplify:
[tex]m=\frac{-6}{4}[/tex]
Reduce:
[tex]m=-3/2[/tex]
So, our average rate of change from the interval x=-2 to x=2 is -3/2.
Holden drove 110 miles in 2 3/4 hours. What was Holden's speed in miles per hour?
Answer:
Holden's seed is 40 miles per hour
Step-by-step explanation:
The given parameters are;
The distance Holden drove = 110 miles
The time duration in which Holden drove = 2 and 3/4 hours = 11/4 hours = 2.75 hours
Therefore, Holden's speed, s, can be found from the relationship;
Speed, s = Distance/time = 110 miles/(11/4 hours) = 40 miles per hour
Holden's seed = 40 miles per hour.
Solve the Following expression d=5 2d+4d-9-7=
Answer:
14
Step-by-step explanation:
d=5 so
2(5)+4(5)-9-7
10+20-9-7
30-9-7
21-7
14
Answer:
2×5+4×5-9-7.
10+20-9-7.
=14.
Answer:
2×5+4×5-9-7.
10+20-9-7.
=14.
A grocer makes a graph of how many bananas are sold at different stores on Tuesday.
How many total bananas did the stores sell on tuesday?
Answer:
Step-by-step explanation:
Total of banana
symbols=4.5+6+3+2.5=16
total bananas=16×6=96
14. The range of the data 6, 8, 16, 22, 8, 20, 7, 25 is __________.
Answer:
The range of the data is 19.
Step-by-step explanation:
To solve this problem, we must remember that to calculate the range, we subtract the smallest data point in the set from the largest data point. In this case, the largest number is 25 and the smallest number is 6.
Therefore the range is:
25 - 6
= 19
Hope this helps!
Answer:
The range is 19
Step-by-step explanation:
6, 8, 16, 22, 8, 20, 7, 25 is
List the numbers from smallest to largest
6, 7,8, 8 ,16,20, 22,25
The range is the largest number minus the smallest number
25 - 6
19
The range is 19
Can you help me with 7&8?
Answer:
Q 7. First=33 Second=35 Third=37
Q 8. First=46 Second=48 Third=50
Step-by-step explanation:
Question 7. Find three consecutive odd integers whose sum if 105.
Let x=the first number (the smallest number）
Then, x+2=the second number, x+4=the third number
x+(x+2)+(x+4)=105
x+x+2+x+4=105
3x+6=105
3x=99
x=33
First=33 Second=35 Third=37
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Question 8. The sum of three consecutive even integers is 144. Find the numbers (I think so since you didn't took the whole picture)
Let x=the first number (the smallest number)
Then, x+2=the second number, x+4=the third number
x+(x+2)+(x+4)=144
x+x+2+x+4=144
3x+6=144
3x=138
x=46
First=46 Second=48 Third=50
Hope this helps!! :)
Please let me know if you have any question
which fraction numbers are more than half
Answer 2/3
Step-by-step explanation:
What is the equation of the line in slope-intercept form?
Answer: Slope - intercept form y = 1/7x - 1
The function f(x) = 16.4x + 2 is used by a construction company to estimate the amount of fuel necessary for a truck to get to a job site depending on the miles from the office, x. The mathematical domain for the function is the set of real numbers. How does the reasonable domain differ from the mathematical domain?
Answer:
The reasonable domain is less extensive that the mathematical domain.
Step-by-step explanation:
The reasonable domain for the function is the set of all possible values of the independent variable (in this case x) that make sense to the situation in which the function is being applied.
For the function [tex]f(x)=16.4x+2[/tex], the mathematical domain is the set of real numbers.
Now, in the function the independent variable ''x'' represents the distance (in miles) between the job site and the office. We know that we can't have a negative distance in real life. Therefore, we need to restrict our mathematical domain into the reasonable domain by eliminating all the negative numbers from the set of all real numbers.
Our new domain (reasonable domain) is
{x ∈ IR : x ≥ 0}
The reasonable domain is less extensive that the mathematical domain.
1. A grocery store just received a shipment of 200 dozen eggs. If 12 eggs = 1 dozen, how many eggs did
the store receive?
Answer:
2400 eggs
Step-by-step explanation:
12*200=2400
The segments shown below could form a triangle,
A
С
9
7
16
С
A
A. True
B. False
Answer: the answer is false
Step-by-step explanation:
i just took the test :)
Answer:
This is false
Step-by-step explanation:
Solve
82 - 21 + 10 = 61
Answer:
False
Step-by-step explanation:
82 - 21 + 10 = 61 is false 82 - 21 + 10 = 71
One morning, the temperature was -5 ferenhight. By noon, the temperature had increased 12 degrees. What was the temperature at noon? Use a model to explain your answer.
Answer:
[tex]Noon\ Temperature = 7F[/tex]
Step-by-step explanation:
Given
Initial Temperature = -5F
Change (by noon) = 12 degrees
Required
Determine the temperature at noon
The temperature by noon is calculated as thus;
[tex]Noon\ Temperature = Initial\ Temperature + Change[/tex]
Substitute values for Initial temperature and change
[tex]Noon\ Temperature = -5F + 12[/tex]
[tex]Noon\ Temperature = 7F[/tex]
Hence, the temperature at noon is 7F
i need help with this math problem??
Answer:
C
Step-by-step explanation:
.7
⅔= .666666
⅝=.625
65%= .65
.625<..65<.666<.7
4. The Ferris Wheel Problem:
You are riding a Ferris wheel that has a radius of 50 feet. The center of the wheel is
65 feet off the ground. The wheel makes a complete turn every 40 seconds and it
turns counterclockwise, Riders board the wheel at the 6 o'clock position
You can see a beautiful view from the Ferris wheel as long as you are more than 90
feet off the ground. When will you be able to see the view
acer
Answer: the answer is when the wheel is at 70.43° after 7.82seconds from when you ride on it
Step-by-step explanation:
Rule of 3
65ft center meaning the top point at 90° will be at 115ft since the diameter of the wheel is 50ft
If the 90° gets you at 115ft, at what degree will you reach 90ft?
90°----115ft
X°------90ft
(90x90) ÷ 115 = 70.43°
Then if 360° takes 40seconds which is the complete turn
360°----40s
70.43°--X
(70.43 x 40) ÷ 360 = 7.82s
y = 8x + 3 when rearranged to solve for x
Answer:
x = Y-3 over 8
Step-by-step explanation:
Y = 8x+3
Take the 3 to the other side by subtracting it
so:
Y-3 = 8x
divide 8 to get only x
x = Y-3 over 8
John was looking at his streaming music stats. the ratio of songs he liked to disliked was 5.2. If he listened to 63 songs total how many did he like
Answer:
liked = 45 ; disliked = 18
Step-by-step explanation:
Let the number of songs he liked be x & disliked be y.
The ratio of x & y :-
[tex] \frac{x}{y} = \frac{5}{2} \\ = > 2x = 5y \: \: \: \: [/tex]
And total number of songs he listened = 63
Then, x + y = 63...................eqn.1
=> x = 63 - y
Substituting the value of x in eqn. 2x = 5y gives :-
2(63 - y) = 5y
=> 126 - 2y = 5y
=> 7y = 126
=> y = 18
Substituting the value of y in eqn.1 gives
x = 63 - 18
= 45
Hence no. of songs he liked = 45 & disliked = 18
Which table of ordered pairs represents a function?
Answer:
Graph on the top right.
Step-by-step explanation:
A function is a relation where one domain value is assigned to exactly one range value.
In a table, there would be no values repeating in the x-column.
The graph on the top right does not repeat any x values. Therefore, it is a function.
Why the other options are not functions:
The top left graph has 4 for all it's domain values.The bottom left graph has '-2' repeating for the domain.The graph on the bottom right repeats '0' as the domain.Hope this helps.
A canoe traveled Downstream with the current and went a distance of 15 miles in three hours. On the return trip, the canoe traveled Upstream against the current. It took 5 hours to make the return trip. Find the rate of the current
Answer:
1 mile/hr
Step-by-step explanation:
Let the Speed of the boat still in water = a
Speed of the current = b
We know from this formula that speed = distance/time
Hence,
A canoe traveled Downstream with the current and went a distance of 15 miles in three hours.
Downstream = a + b = 15/3
a + b = 5 .........Equation 1
On the return trip, the canoe traveled Upstream against the current. It took 5 hours to make the return trip.
Upstream = a - b = 15/5
a - b = 3 ..............Equation 2
Combining both Equation together
a + b = 5 .........Equation 1
a - b = 3 ..............Equation 2
Subtracting Equation 2 from Equation 1
2b = 2
b = 2/2
b = 1miles/hr
Since b = speed of the current which can also be called rate of the current, the rate of the current = 1 miles/hr
Lydia guessed there were 180 jelly beans in a container.
There were actually 220 jelly beans in the container.
What was Lydia's percent error?
Answer:
18.18% error
Step-by-step explanation:
Use the percent error formula,
% error = | (measured - accepted) / accepted | x 100
Plug in the values we know:
% error = | (180 - 220) / 220 | x 100
% error = | - 0.18 | x 100
% error = 18.18% error
Can someone solve these two equations for me ?