Answer:
94%
47*2=94
50*2=100
Step-by-step explanation:
Answer: 94% of the swimmers finished the race in less than 35 minutes.
Step-by-step explanation:
There are several ways to go about finding the answer. The best way to solve this, which can be easily applied to other percentage problems is dividing the number of swimmers who finished in this time (47) by the total number of swimmers (50) (Using a calculator).
47/50 = 0.94
To change a decimal to a fraction, move the decimal place over two spaces to the right. Therefore, 0.94 becomes 94%.
Way 2:
This only works because there the number of swimmers are a multiple of 100.
50 is 1/2 of 100. To get the full 100, you can multiply both the numerator and denominator by 2.
Multiply 47 by 2 to get 94 and 50 by 2 to get 100. Thus, 94/100 swimmers would have finished in under 35 minutes. 94/100 = 94%
The ratio of the side lengths of a triangle is 2:3:4. The shortest side is 15 inches. What is the perimeter? Explain. Pleas show your work. I will give brainiest to the best and first answer
Ratio of the sides of the triangles,
2 : 3 : 4
Let's consider each side to be
2x,3x and 4x
Therefore the perimeter of the triangle is,
2x + 3x + 4 x = 9x
The shortest side is 15 inches.
We know that the smallest value in the above ratio is 2
Therefore,
2x = 15 inches
x = 7.5 inches
☞Perimeter of the triangle
= 9x
= 9 * 7.5 inches
= 67.5 inches
Apple launches an ad campaign for iPhone 12. Managers want to know what is the % of social media mentions that have positive reactions to the new ad campaign. How many social media mentions do managers at Apple need to collect, if they want to get a margin of error of 2% (ME=0.02)?
Answer:
social media mentions do managers at Apple need to collect, if they want to get a margin of error of 2%
Sample size 'n' = 625
Step-by-step explanation:
Step(i):-
Given data Apple launches an ad campaign for iPhone 12
Managers want to know what is the % of social media mentions that have positive reactions to the new ad campaign
probability of positive reactions p = 1/2
Probability of negative reactions q = 1-p = 1/2
we know that [tex]\sqrt{p(1-p}\leq \frac{1}{2}[/tex]
Step(ii):-
Given margin of error = 2 % =0.02
The margin of error is determined by
[tex]M.E = \frac{\sqrt{p(1-p} }{\sqrt{n} }[/tex]
[tex]0.02 = \frac{\frac{1}{2} }{\sqrt{n} }[/tex]
[tex]\sqrt{n} =\frac{1}{2 X0.02}[/tex]
√n = 25
squaring on both sides, we get
n = 625
What slope would make the lines
perpendicular?
y. = }x+6
= [?]x+ 3
Answer:
to make it perpendicular the slope as to be -5 (opposite reciprocal of the original)
Identify the index in the radical below.
V34
A 3
B. 4
C. 7
D. The radical above does not have an index.
Answer:
I am going to say the answer is D.The radical above does not have an index.
Evaluate ab + c for a = 2, b = 3, and c = 4. 10 27 9
What is the equation represented by this line?
Answer:
y=4/3x+2
Step-by-step explanation:
slope is rise over run so you go up 4 and over 3 then add the y wich is 2
the scale on a blueprint for a new apartment is 1 in equals 4 feet if the length of the living room on the blueprint is 6 in, what is going to be the actual length of the living room?
Answer:
The actual length of the living room is 24 feet.
Step-by-step explanation:
Scaling
The scaling on a blueprint for an apartment is:
1 inch = 4 feet
This means every 1 inch measured on the blueprint corresponds to 4 feet on the real length of the apartment.
We know the length of the living room in the blueprint is 6 inches, thus the real dimension of the living rooms is:
6 * 4 = 24 feet
The actual length of the living room is 24 feet.
Simplify 13w + 22 + 2w -25
Answer:
15w -3
Step-by-step explanation:
13w + 22 + 2w -25
15w -3
Answer:
15w - 3
General Formulas and Concepts:
Combining like termsStep-by-step explanation:
Step 1: Define expression
13w + 22 + 2w - 25
Step 2: Simplify
Combine like terms (w): 15w + 22 - 25Combine like terms (constants): 15w - 3Researchers are conducting a survey about what brand of ice cream shoppers prefer. They survey the tenth person who walks into the store and then every fifth person after that. This type of sampling is called
Answer:
Researchers are performing a study of what type of ice cream shoppers want. They're looking at the tenth person who goes to the shop, and every fifth person after that. This type of sampling is referred to as a random sampling.
Answer:
A. systematic random sampling.
Step-by-step explanation:
Use a system of linear equations to find the quadratic function
f(x) = ax2 + bx + c
that satisfies the given conditions. Solve the system using matrices.
f(−2) = −5, f(1) = −8, f(2) = −25
Answer:
c
Step-by-step explanation:
A four-year college’s application process takes into account all of the following except. HELP MEEEEE
Answer:
C. middle school grades
Step-by-step explanation:
Colleges want to see if students challenged themselves by taking rigorous courses, and they also want to know what kind of grades students were able to maintain. They also like to take into account the scores you get on standardized tests because these tests can give a relatively accurate idea of a student's mastery of certain subjects. The only thing they don't pay attention to are the grades you earned in middle school. Since these grades aren't very recent, they don't serve as an accurate measure of a student's academic ability, which is why colleges prefer to look at the grades a student earns during their time in high school.
Hope this helps :)
Which of the following is a true statement?
3/5 8/24
4/8 8/24
Answer:
B
Step-by-step explanation:
6/16 = 0.375
8/24 = 0.33333...
4/8 = 0.5
6/16 = 0.375
therefore, B is correct
What is the difference between 43.68 - 40.67
You survey 50 people and 44 say "yes." What fraction of the people say "yes?" What percent of the people say "yes?"
Answer:
percent 88%
fraction 44/50
ratio 44:50
Step-by-step explanation:
Nancy Boone’s new automobile had an MSRP of $27,853.00. The dealer prep charge was $278.50 and the title fee was $25.00. Options totaled $2,375.50. Find the sales tax rate, to nearest hundredth percent, if the total cost was $32,591.22 and the sales tax applied to everything but the title fee.
Answer:
The sales tax included in the sale of the car is 15.76%.
Step-by-step explanation:
Given that the MSRP of the car bought by Nancy Boone is $ 27,853, and the total cost of the car was $ 32,591.22, including sales tax, plus a dealer prep charge of $ 278.50 and a title fee of $ 25, to find out the percentage of sales tax ( which does not include the title fee) it is necessary to perform the following calculation:
32,591.22 - 25 = 32,566.22
27,853 + 278.5 = 100
32,566.22 = X
28,131.5 = 100
32,566.22 = X
(32,566.22 x 100) / 28,131.5 = X
3,256,622 / 28,131.5 = X
115.76 = X
115.76 - 100 = 15.76
Thus, the sales tax included in the sale of the car is 15.76%.
which value of p is the solution of 5p-1=2p+20
Answer:
p=7
Step-by-step explanation:
5p-1=2p+20 first add 1 to both sides to get 5p=2p+21, then subtract 2p from both sides to get 3p=21, then divide by three to get p=7
find the value of 'x' in the given figure
Answer:
x=10
Step-by-step explanation:
The value of x is 10
rate me and thank me!!!
Answer:
x=4
Step-by-step explanation:
.................
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Test Scores in Relation to Homework
100
90
80
70
60
Test Scores
50
40
30
20
10
0
1 2
3
8
9
4 5 6 7
Hours of Homework
Draw a line of the best fit on the graph
A farm lets you pick 3 pints or raspberries for 12.00 how many pints do you get per dollar
If there are 10 roses, 4 daisies, and 12 carnations in a vase, what are the chances of NOT picking a carnation?
Write your answer as a fraction.
A cylindrical garbage can has the dimensions shown.
A cylinder has a diameter labeled twelve inches and height labeled fifteen inches.
What is the area of the horizontal cross section of the cylinder? Use 3.14 for π.
Answer:
113.04 square inchesStep-by-step explanation:
Horizontal cross-section of a cylinder is a circle with same dimension as its base
Given diameter
12 inchesArea formula
A = πr² = πd²/4So the area of cross section is:
A = 3.14*12²/4 = 113.04 square inchesPaul, Colin and Brian are waiters.
One night the restaurant earns tips totalling £78.40.
They share the tips in the ratio 2:1:5.
How much more does Brian get over Colin?
Let 2x = Paul
Let x = Colin
Let 5x = Brian
2x + x + 5x = 78.40
8x = 78.40
x = 78.40 ÷ 8
x = 9.8
Brian gets 5(9.8) which is 49.
Colin gets 9.8.
Brain over Colin means 49/9.8 = 5.
Brain gets £5 more than Colin in terms of a tip.
What is the slope? I will brain list you
Answer: It describes the direction and the steepness of the line.
Step-by-step explanation:
Since the 1800s, fossil fuels have been used to meet the energy needs of many human activities.
Select TWO statements that describe what the scientists will observe in the ecosystem after fossil fuels have been extracted and burned.
Group of answer choices
There is more available space for carbon to become fossil fuels.
There is less carbon in storage.
There will be less carbon in the water.
There is more carbon in the atmosphere.
There will be more carbon respired by organisms.
There will be less carbon released through decomposition.
Answer:
Below.
Step-by-step explanation:
There will be more carbon in the atmosphere.
There is less carbon in storage.
Answer:
1. There is more carbon in the atmosphere.
2. There is more available space for carbon to become fossil fuels.
Step-by-step explanation:
When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years. Each year, five and a half billion tons of carbon is released by burning fossil fuels. Of this massive amount, 3.3 billion tons stays in the atmosphere. When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain.
Which equations are equivalent? Select all that apply.
2n + 4n + 3 = 51
3n + 4 + 5n = 52
3(2n + 6) = 36
8n + 4 = 52
4(2n + 1) = 52
Simplify.
7/8+(−2/3)
---------------
5/6
Enter your answer as fraction in simplest form by filling in the boxes.
Answer:
[tex]\frac{1}{4}[/tex]
Step-by-step explanation:
[tex]\frac{7}{8} + \frac{-2}{3}[/tex]= [tex]\frac{5}{24}[/tex]
[tex]\frac{5}{24}[/tex]÷[tex]\frac{5}{6}[/tex]=[tex]\frac{30}{120}[/tex]
[tex]\frac{30}{120}[/tex]=[tex]\frac{1}{4}[/tex]
Please give me Brainlest!
Raquel Ruined 18 of her 30 assignments by spilling her smoothie. What percent of her assignments were not ruined?
Which histogram represents this data set?
47,48,49,50,50,54,54,55,57,59,61
What is 3/5written as a decimal?
Answer:
0.6
Step-by-step explanation:
Not much math here.
Answer:
Step-by-step explanation:
0.6 hope this helps
PLSSS HELP ILL MARK BRAINLIEST!!!!
What is the value of the expression shown below?
3+ (2 + 8)^2 = 4x(1/2)^4
Answer:
412
Step-by-step explanation:
103=4x(1/16)
103*16=4x
103*4=x
412=x