evaluate each expression. express the result in scientific notation.
(3.9 x 10/3) (2.3 x 10/6
A project will take a total of 720 person-days to complete. If the project must be completed in 30 days, how many people must be employed? PLEASE HURRY
Answer:
192 hours per day / 8 hours per person per day = 24 people
Step-by-step explanation:
Assuming each person works for 8 hours a day, the total number of hours needed to complete the project is:
720 person-days x 8 hours = 5,760 hours
To complete the project in 30 days, the total number of hours needed per day is:
5,760 hours / 30 days = 192 hours per day
Find the number of faces, edges, and vertices of a triangular pyramid. A triangular pyramid has? faces,?edges,? and? vertices.
Answer:
Step-by-step explanation:
Properties of Triangular Pyramid :
It has 4 faces.
The 3 side faces are triangles.
The base is also a triangle.
It has 4 vertices (corner points).
It has 6 edges & also a tetrahedron.
Triangular Pyramid has 4 faces, 6 edges and 4 vertices.
What is triangular pyramid?A triangular pyramid is a 3-d shape that has a triangular base and 3 triangular faces.
Therefore, the number of faces is 4, the number of edges is 6 and the number of vertices is 4 of a triangular pyramid.
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The area of a square is calculated by squaring the length of one side of the square. Which graph represents this situation?
i really need this can someone help solve asap!!!
Answer: to find this answer .we need to do pegothogs property
Step-by-step explanation:
30° + 90° = 90 (because it is right angle )
120° - 90° = 30°
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thank you :-)
Question is in picture down below
PLEASE include explaination
Answer: 3 units (look at the image for the solution)
Step-by-step explanation:
Answer:
109-5h
Step-by-step explanation:
Idek
Subtract . What is the difference in lowest terms?
One-half
Four-eighths
Three-fourths
Six-eighths
5/8 - 1/8
4/8
1/2
Hope this helps! :)
A triangular prism is shown below.
What is the surface area of the triangular prism?
A 580 square ft
B 640 square ft
C 840 square ft
D 960 square ft
Which of the following should you multiply by to find 7% of a total?
1) 7/10
2) 0.7
3) 0.07
4) 7
Answer:
3
Step-by-step explanation:
7% written in decimal is 0.07.
Hope this helps!
please answer quickly
Answer:
37.5
Step-by-step explanation:
cosФ = \(\frac{A}{H}\)
cos(33°35') = \(\frac{m}{45}\)
m = 45 × cos(33°35')
m = 37.5 (1d.p.)
F. If you make $28 dollars and hour and work for 32 hours in a week. How much money do you Gross ?
you multiply $28 by 32. Which is $896
G. Take the answer from Letter F ( weekly earnings) and find what 70% of that amount is ?
Answer:
F. 896 G.627.2
Step-by-step explanation:
Take 896 and multiply it by 70% if u want u can use a calculator.
HELP ANSWER THIS I WILL GIVE TEN POINTS AND THANKS!
REMEMBER TO EXPLAIN STEP-BY STEP! AND GET THE CORRECT ANSWER!
The units and tens digits of one-two digit integer are the tens and units digits of another two- digit integer, respectively. If the product of the two integers is 4930, what is their sum?
Answer:
(10t + u)(10u + t) = 4,930
100tu + 10t^2 + 10u^2 + tu = 4,930
101tu + 10t^2 + 10u^2 = 4,930
10t^2 + (101u)t + (10u^2 - 4,930) = 0
(101u)^2 - 4(10)(10u^2 - 4,930)
= 10,201u^2 - 400u^2 + 197,200
= 9,801u^2 + 197,200
We see that u = 5 gives 442,225.
√442,225 = 665
(10t + 5)(50 + t) = 4,930
500t + 10t^2 + 250 + 5t = 4,930
10t^2 + 505t - 4,680 = 0
2t^2 + 101t - 936 = 0
t = (-101 + √(101^2 - 4(2)(-936)))/(2×2)
= (-101 + √17,689)/4
= (-101 + 133)/4 = 32/4 = 8
So the numbers are 58 and 85.
58 + 85 = 143
I have 60% on my iPad and my brother has 90% on his how much more percentage I need as a fraction.
Answer:
1/3
Step-by-step explanation:
just convert it?
3/10
Step-by-step explanation:
60% is the same as 60/100
90% is the same as 90/100
90-60=30
30/100
30/100 is divided by 10 on each side to simplify it to 3/10
Please help my sister finish this
The chart below shows the hourly wage for the employees at the local newspaper office. How many employees earn between $20 and $40 an hour?
A. 400
B. 1,200
C. 1,600
D. 16,000
If Amber walks from her house to Claire's house, then on to Betsey's house along the path shown, how far will she have walked in blocks? Round your answer to the nearest hundredth. (4 points)
An image is required to solve this problem please provide an image and I’ll come back and edit this answer.
Answer:
3 i think im not sure
Step-by-step explanation:
Please Help ASAP! Rewrite x^4y^2 − 3x^3y^3 using a common factor.
A. 3xy(x^3y − x^2y)
B. 3xy^2(x^2 − x^2y)
C. x^2y(xy − 3xy^2)
D. x^2y^2(x^2 − 3xy)
I think it's B. But I might be wrong.
Answer:
Step-by-step explanation:
you are completely right please follow your heart <3
Last math question :’)
Answer:
324
Step-by-step explanation:
um sorry thats all i understand from this problem :(
Someone help me with this ASAP!
Answer:
48.1 somewhere around 36 and 57
Step-by-step explanation:
Answer:
36-57
Step-by-step explanation:
18.50 x 2.6 = 48.10, which is between those two numbers
which comparison is true?
62.1 >63
8 625
Answer:
well the first one is inncorrect
Step-by-step explanation:
When x = 10, what type of solution do we have?
Answer:
one solution
Step-by-step explanation:
One solution
ex: x=10
No solution
ex: x=x
Many solutions
ex: 3x+2y=5
please help me i will give brainliest to first person to anwser.
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
Michael has a bag of marbles. The frequency of selecting each color is recorded in the table below. Outcome Frequency Green 4 Black 6 Orange 5 Based on the given frequency, determine the experimental probability of selecting a black marble. 0.27 0.33 0.40 0.60
help asap if answer is correct and provided explanation i will give brainiest.
Reason:
6 black out of 4+6+5 = 15 total
6/15 = 0.40 is the experimental probability of selecting black.
Side note: The term "empirical probability" is the same as "experimental probability".
The experimental probability of selecting a black marble will be 0.40. The correct option is C.
What is probability?Probability is a number that indicates the likelihood of an event occurring. Probability is defined as the ratio of favourable outcomes to all outcomes.
Probability = Number of favourable outcomes / Number of samples
Given that Michael has a bag of marbles. The frequency of selecting each colour is recorded in the table below. Outcome Frequency Green 4 Black 6 Orange 5.
Number of favourable outcomes = 6
Number of samples = 4+6+5 = 15
Probability = Number of favourable outcomes / Number of samples
Probability = 6 / 15
Probability = 0.40
Therefore, the probability will be 0.40.
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what is 1.66 x 10,000? i need to show how i got this answer.
PLS HELPPPP! ILL GIVE BRAINLIEST
Answer:
It is A. ..
Hopes this helps and have a fantastic day! :D
-thatLilWeeb
Answer:
Its C
Step-by-step explanation:
yuson must complete a certian number of hours of community service. she does 2 hours of service each day. after 8 days, yuson has completed half of her required community service. write a linear equation to represent the hours that yuson has left to do after x days.
Answer:
y = 32 -2x
Step-by-step explanation:
You want an equation for the remaining community service Yuson must complete after x days if she does 2 hours per day and is half done after 8 days.
RemainingYuson has completed (2 hr/day)·(8 day) = 16 hr of community service after 8 days. This is half the total required, so the initial amount required must be 2·16 = 32 hours.
After x days, 2x hours have been completed, reducing the amount remaining. Thus the amount remaining is ...
y = 32 -2x . . . . . hours left after x days
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If unknown metal object A has a density of 8.95 g/cm3 then it most likely is made of?
If unknown metal object B has a density of 5.71 g/cm3 then it most likely is made of?
Answer:
iron
Step-by-step explanation:
I'm confused, is it A or D?
Answer:
D. x>7
Step-by-step explanation:
Multiply - and -3
x+3>10
Subtract 3 on both sides
x>7
(Remember you can only switch the symbol if you divide or multiply by negative it does not apply on addition or subtraction)
Hope this helps!
Answer:
It is D.
Step-by-step explanation:
Remove parentheses: x + 3 > 10
Subtract 3 from both sides: x > 10 - 3
Simplify 10 - 3 to 7: x > 7
he northern pike can grow a leangth of abt 1 m. write this length in millimeters and in centimeters
Answer:
1000 millimeter and 100 in centimeters
Step-by-step explanation:
Answer:
its 1000 millimeters and 100 in centimeters
Name three fractions between 1/2 and 1
The three fractions in between 1/2 and 1 are 3/4, 7/8, and 15/16.
What are Fractions ?Fractions are the numbers that can be written in the form, p/q, here q≠ 0.
The fractions between 1/2 and 1 have to be determined
The fractions are
((1/2) + 1)/2 = 3/4
(3/4 +1 )/2 = 7/8
((7/8) + 1)/2 = 15/16
Therefore, the three fractions in between 1/2 and 1 are 3/4, 7/8, and 15/16.
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