Answer:
68+72+85=225
plus 79 =304 divided by 4 = 76
plus 89 =314 divided by 4 = 78.5
plus 91=316 divided by 4 = 79
so the answer is C
plz brainlest
Answer:
91%
Step-by-step explanation:
(0.68 + 0.72 + 0.85 + x)/4 = 0.79
(2.25 + x)/4 = 0.79
0.5625 + 1/4x = 0.79
1/4x = 0.2275
x = 0.91 = 91%
Part of the population of 4,750 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 5 of them are infected. How many elk are likely to be infected? Based on the sample, there will likely be infected elk in the wildlife preserve
Answer:
ANSWER IS 475
Step-by-step explanation:
because using the rule of three aka 4750 x 5 = 23750 divided by 50 = 475
The display at an aquarium has sea stars and eels in a ratio of 4:5. It also has 5/8 as many rockfish as sea stars. There are 40 more wolf eels than rockfish. How many Sea stars are there?
64 sea stars in the aquarium.
What is Ratio?Ratio is defined as a relationship between two quantities, it is expressed one divided by the other.
Ratio of see stars to eels = S : E = 4:5
E = 5/4(S)
Ratio of rockfish to sea strars = R : S = 5:8
R = 5/8(S)
E = R + 40
5/4(S) = 5/8(S) + 40
Multiply by 8 both the sides
10S = 5S + 320
5S = 320
S = 320/5
S = 64
Hence, 64 sea stars in the aquarium
Learn more about Ratio here:
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A bullet of mass m1 = 0.020 kg is fired with initial speed v1 into a block of mass m2 = 0.500 kg that is initially at rest. The bullet becomes embedded in the block and the pair slide along to the right a distance d= 0.35 m over a rough surface with uk = 0.25. the spring (with k = 450 N/m) is compressed by a distance of x = 0.075 m. work backwards and determine the initial velocity of the bullet.
Select all the expressions that are equal to 3/4
Answer:
A and B
Step-by-step explanation:
7/20 + 2/5 = 3/4
19/20 - 1/5 = 3/4
3 4/7 - 9/10 = 2 47/70
Using inverse operations is a direct way to solving equations
What is the Golden Rule for solving equations?
Answer:
Do unto one side of the equation, what you do to the other!
Step-by-step explanation:
An equation is like a balance scale. If we put something on, or take something off of one side, the scale (or equation) is unbalanced. When solving math equations, we must always keep the 'scale' (or equation) balanced so that both sides are ALWAYS equal.
Answer:
Keeping the equation balanced.
Step-by-step explanation:
You need to keep the equation balanced on both sides of the equal sign, like when you need to get rid of the number 4 on one side you have to do the same thing on the other side.
A coffee grinder uses a current of 1.20 A and has a resistance of 100 ohms. Calculate the voltage explain
Answer:
Step-by-step explanation:
I = V / R
Current = (voltage) / (resistance)
Current = (500 V) / (250 ohms)
Current = (500/250) Amperes
Current = 2 Amperes
i neeed helppppp plssssssssssssssss
Sara decides to bottle 1/3 of her milk. She pours the milk evenly among 5 bottles. What fraction of her milk will she put in each bottle? *
5 1/3
15
1/15
2/3
Thanks!!!!
Answer:
Is 1/15
Explicación:
Ya que dividiendo 1/3 para 5 das 1/15.
Since dividing 1/3 for 5 gives 1/15.
Brainliest, 10 Points, + 5 Stars if correct! Drag each tile to the correct box. Not all tiles will be used.
Arrange the systems of equations that have a single solution in increasing order of the x-values in their solutions.
Thanks everyone!
6. −7(x−6)=−70
7. Solve for n *(4 Points) 9+n=−2
Answer:
6. x = 16
7. n = -11
Step-by-step explanation:
6. -7(x-6)=-70
= -7x + 42 = - 70
= - 7x = - 70 - 42
= -7x = -112
= -7x/-7 = -112-/7
= x = 16.
7. 9 + n= - 2
= n= -2 - 9
= n = -11
50 points! Answer AS much as you can, I give Brainliest!
Answer:
9. y = 8
10. n = 21
11. 44 = v
12. c = 35
Step-by-step explanation:
9. 9y = 72
Divide each side by 9
9y/9 = 72/9
y = 8
10. 3n = 63
Divide each side by 3
3n/3 = 63/3
n = 21
11. 4 = v/11
Multiply each side by 11
4*11 = v/11*11
44 = v
12. c/7 = 5
Multiply each side by 7
c/7*7 = 5*7
c = 35
PLZ ANSWER ASAP for brainliest!
Answer:
I think it is C because it keeps on going and it doesnt stop at 0
hope this :)
Step-by-step explanation:
Mark as brainllest if it helps
I believe the answer is option c.
Explain and answer pls :)
Answer:
first write boys/girls=2/3 then we know there are 24 boys so; 2/3=24/girls .so we have 24×3/2=36= girls number.
Which rule about the sign of the quotient of positive and negative decimals is correct?
Answer:
negative decimal
Step-by-step explanation:
A positive decimal divided by a negative decimal is always a negative decimal
Answer:
Even though you didn't show the answer choices heres something that might help: A negative sign multiplied by another negative sign would give you a positive sign.
Step-by-step explanation:
Evaluate : 1/2 ( 4x - 12) when x = 9
Answer:
12
Step-by-step explanation:
plug in 9 for x in the equation
1/2 (4(9)-12)
HELPPPPP!!!!!!!!!!!!!!!!!!!
Answer:
I think $10 is the answer
This box plot shows the weights in ounces, of some kittens.
Weights of Kittens
4 5 6 7 8 9 10 11 12 13
Ounces
Which of the following is the interquartile range of the weights, in ounces of the kittens?
O A. 0.5
O B. 2.5
O C. 3.5
O D. 7.5
What is the product of the 6th square number and the 3rd square number
Answer:
6th square no is 36sq is 9
Answer:
It is 9+36 = 45
Step-by-step explanation:
Consider the following 8 numbers, where one labelled x is unknown.
50, 22, 42, x, 30, 42, 9, 23
Given that the range of the numbers is 66
work out 2 values of x
Answer:
x=75 or x=-16
Step-by-step explanation:
these are the two answers
Anybody know this I don't want to go to summer school I'm being serious pls help
Answer:
the bus is travelling faster
It is travelling faster by 22-18= 4 meters per second
Step-by-step explanation:
if you divid the meters per second you get 22 for the car and 18 for the bus
it's going faster by 4 meters per second\
The ratio of dye to pounds of clothing is constant. A worker develops the chart below to show the amount of dye needed for different amounts of clothing.
For which weight of clothing is the ratio of weight to dye different from the other ratios?
21 pounds
42 pounds
84 pounds
105 pounds
Answer:
Step-by-step explanation:
The answer is B, 42
A storage box has a height of 8 inches, length of 4 inches, and a width of 4 inches. I use cubes with an edge length of 12 inch. If the box is completely full, how many cubes will fit in the storage box?
Answer:
3
Step-by-step explanation:
8×4=32×4=128
12×3=36
128÷36= 3.5
but u need to put full cubes which would be 3
I need to get aleks done on june 3oth
Answer:
3.2
Step-by-step explanation:
Since it is similar, we know that the sides are gonna be directly proportional so
QR (6.4) / BC (4) = scale factor of 1.6
1.6 x 2 = 3.2
PLS help me :)))) thx
Answer:
7) 96in²
8)292yd²
Step-by-step explanation:
7)
6×2=12
14×6=84
84+12=96
8)
26×7=182
22×5=110
182+110=292
Answer for the first one (7):
A = 96 square inches
Step-by-step explanation:
to find the unknown sides: 6+6=12
and: 14-12=2
then split into rectangles and find the area for each of them by multiplying the two sides and then add the two rectangles' areas together
Answer for the second image (6):
A= 229 square yards
Step-by-step explanation:
to find the unknown sides: 29-22=7
and: 26-21=5
split into rectangles find area for each of them then add the areas to get the answer
How many pints are in6 1/2quarts?
A: 3 1/4pt
B: 13 pt
C:19 1/2pt
D: 26 pt
Answer:
B. 13 pt
Step-by-step explanation:
There are 2 pints in 1 quart
2×6 1/2=13
Hope this helps! :)
What is the distance between the following points?
Answer:
c
Step-by-step explanation:
Ahmad’s goal is to exercise for a mean of 45 minutes per day for one week. For the first six days of the week, he exercised 35, 40, 37, 42, 45, and 50 minutes. What is the number of minutes Ahmad must exercise on the 7th day to meet his goal for the week?
Answer:
41.5
Step-by-step explanation:
To find the mean, your supposed to add all the numbers you have and divide by how many numbers there are. In this question your numbers are 35, 40,37,42,45, and 50.
If you add them all up you get 249. Your next step is to divide by how many numbers there are. Since there are 6, your equation will now be 249 divided by 6. Your answer is now 41.5
So on the 7th day Ahmad exercised for 41.5 minutes. If you need to round then maybe 41 minutes.
Answer:
41.5
Step-by-step explanation:
On the 7th day Ahmad exercised for 41.5 minutes and if you want to put it simply its 41 minutes.
Question:
A running club keeps track of the number of hours each person has trained for a race and the length of time it takes the person to run the race. A scatter plot is graphed with the x-axis indicating the number of hours a runner has trained and the y-axis indicating the time, in minutes, it took to run the race. The equation y = 60 - 0.5x is used as the line of best fit of the data. What does the slope of the equation represent?
options:
a
Runners will decrease their race time by 2 minutes for every 1 hour they have trained.
b
Runners will increase their race time by 2 minutes for every 1 hour they have trained.
c
Runners will increase their race time by 1 minute for every 2 hours they have trained.
d
Runners will decrease their race time by 1 minute for every 2 hours they have traine
The solution is, 60 minutes is a good prediction of how long it will take Tom to run the 6 mile race.
What is scatter plot?A scatter plot is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. If the points are coded, one additional variable can be displayed.
Here, we have,
We are given the scatter plot which shows the distance he has run and the time it took for each run.
We are asked to determine a good prediction of how long it will take Tom to run the 6 mile race?
One way to predict the time is by drawing a line that best fits the given data.
As you can see, from the line of best fit, the time corresponding to the 6 miles is around 60 minutes.
Therefore, 60 minutes is a good prediction of how long it will take Tom to run the 6 mile race.
Read more on scatter plot here:
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complete question:
Tom is training for a 6 mile race. The following scatter plot shows the distance he has run and the time it took for each run. What is a good prediction of how long it will take Tom to run the 6 mile race?A) 55 minutes B) 50 minutesC) 60 minutes D) 70 minutes
HEY CAN SOMEONE HELP ME FAST I GIBE BRAINLIST
Answer:
4
Step-by-step explanation:
Add all the "x" 's up.
1(2)=2
2(1)=2
3(1)=3
4(1)=4
5(4)=20
6(1)=6
7(1)=7
you add those up to get 44.
Now add all the individual "x" 's which equal 11.
44/11=4
What is the area of the figure below?
Answer:
68 in
Step-by-step explanation:
Because the area of the squares is 3 x 3 = 9 and because there are two squares it is 18. The area of the central figure is 50 because i divided it into 4 triangles and 2 rectangles, each rectangle is 15 in and each triangle is 5 in so 15 x 2 = 30, 5 x 4 = 20 and 30 + 20 + 18 = 68
