Help please this is due soon zzzzzzszzsszzndbdbdjdbdndn
P = 40 + 12 + 28 + 16 + 12 + 28
P = 136 ft.
Attached solved problem.
Consider marking "Brainliest".
Thank you.
There are 2,100 bacteria in a circular petri dish. The dish has a radius of 40 millimeters. What is the approximate population density? (Use 3. 14 for π) Area of a circle = πr2 0. 02 bacteria per square millimeter 0. 42 bacteria per square millimeter 2. 39 bacteria per square millimeter 52. 5 bacteria per square millimeter.
Answer:
B) 0.42
Step-by-step explanation:
population density=number of people/square units
we plug in 2,100 for the first one but we don't know the second one for that we need the area which is A=π[tex]r^{2}[/tex] so the radius is 40 millimeters so [tex]40^{2}[/tex] =1600 1600*π=5024
2,100/5024=0.417 round it up and it is 0.42
so B) 0.42 is the answer
1) A train travels 200km is 5 hours, at this same speed how much time would it take to travel in 600km?
2) If 2 men can weed a compound in 6 days, then how long would it take 4 men working at the same rate to weed the compound?
3) If 3 men can mow a large piece of lawn in 4 days, then how long would it take 2 men working at the same rate mow the same lawn?
4)Lia can string 48 beads in 3 minutes, at this same place, how many beads could she string in 1 minute?
Answer:
it will travel 9 hour in 600miles
it will take 4 men to weed the same compound in 2 days
it will take 2 men to now a large piece of law in 3 days
Step-by-step explanation:
it
Solve 2y + 17 = 6y + 5
Answer:
3
Step-by-step explanation:
2y - 6y = 5 - 17
-4y = -12
y = 3
The product of c and 3 is greater than -26
Answer:
The given phrase "The product of c and 3" can be converted into an algebraic equation as C (times) 3
Step-by-step explanation:
I might be wrong but i rlly hope this helps u in some way :)
Answer:
[tex]3c > -26[/tex]
Step-by-step explanation:
"The product of c and 3" means to multiply c with 3: [tex]c * 3[/tex] or [tex]3c[/tex]
"is greater than": [tex]>[/tex]
"-26": -26
Put the terms together:
"The product of c and 3 is greater than 3": [tex]3c > -26[/tex]
9^6/9^6 simplify please i need a lot of help
Answer:
The answer is 1
Step-by-step explanation:
2.5 as a mixed number but the 5 is repeating
Answer:
[tex]2\frac{5}{9}[/tex]
Step-by-step explanation:
Hi !
2.(5) = 2 5/9
Good luck !
Solve for y when x = 2. y = 4x +2 * I REALLY NEED HELP HHDJDICUHDHHEI HELP ME BRUH
Answer:
y=10
Step-by-step explanation:
y=4x+2
y=4(2)+2
y=8+2
y=10
Answer:
y=10
Step-by-step explanation:
plug-in 2 to x
[tex]y=4(2)+2[/tex]
multiply 4 and 2
[tex]y=8+2[/tex]
add 8 and 2
[tex]y=10[/tex]
WHOEVER ANSER'S THIS WILL GET THE BRAINLESS!!!!!!!!! NEED ANSWER ASAP
Answer:
I think the last one?
Step-by-step explanation:
My teacher wants me to write the angles of a circle what are they?
Answer:
Well the only answer to this question that I can think of is 360 that's because all of the angles in a circle are equal to 360.
Step-by-step explanation:
A factory machine produces kilograms of chocolate every minutes.
At what rate does the machine produce chocolate?
Answer:
1,000g:60sec
or 10 gram every singular second.
Step-by-step explanation:
Find the sum 3x^2/x-8 + 6x/x-8
Answer:
Step-by-step explanation:
STEP
1
:
x
Simplify —
x
Equation at the end of step
1
:
(3•(x2))
————————+((6•1)-8)
(x-8)
STEP
2
:
Equation at the end of step
2
:
3x2
——————— + -2
(x - 8)
STEP
3
:
3x2
Simplify —————
x - 8
Equation at the end of step
3
:
3x2
————— + -2
x - 8
STEP
4
:
Rewriting the whole as an Equivalent Fraction
4.1 Adding a whole to a fraction
Rewrite the whole as a fraction using (x-8) as the denominator :
-2 -2 • (x - 8)
-2 = —— = ————————————
1 (x - 8)
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
4.2 Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
3x2 + -2 • (x-8) 3x2 - 2x + 16
———————————————— = —————————————
1 • (x-8) 1 • (x - 8)
Trying to factor by splitting the middle term
4.3 Factoring 3x2 - 2x + 16
The first term is, 3x2 its coefficient is 3 .
The middle term is, -2x its coefficient is -2 .
The last term, "the constant", is +16
Step-1 : Multiply the coefficient of the first term by the constant 3 • 16 = 48
Step-2 : Find two factors of 48 whose sum equals the coefficient of the middle term, which is -2 .
-48 + -1 = -49
-24 + -2 = -26
-16 + -3 = -19
-12 + -4 = -16
-8 + -6 = -14
-6 + -8 = -14
How to find area and circumference
Answer:
Step-by-step explanation:
Circumference: Pi(D)
Circumference: 3.14x30
Circumference: 94.2
Area: Pi(R)^2
Area: 3.14x15^2
Area: 3.14x225
Area: 706.5
If a basketball player made 72 out of 85 free throws attempts how many could she make in 200 attempts
Answer:
169
Step-by-step explanation:
Use a proportion:
72/85=x/200
Solve for x
(72)(200)=85x
x=(72)(200)/85
x=169.41≈ 169
She can make 169 of 200 free throws.
PLEASEEEEEEE HELPPPP!
Answer:
(3, 6)
Step-by-step explanation:
1. If any factors can be cancelled out, then this indicates that there are holes in the graph.
2. To find the x-coordinate of the hole, set the factor equal to zero and solve for x.
3. Find the y-coordinate by substituting the x-coordinate back into the "reduced" function.
Here are the steps:
[tex]f(x) = \dfrac{ { x }^{ 2 } -9 }{ x-3 }[/tex]
Factor the top part of the function
x² - 9
Since both terms are perfect squares, factor using the difference of squares formula, a² - b² = (a + b) (a - b) where a = x and b = 3
(x + 3) (x - 3)
Now that we have the top part of the function factored, we can solve the rest of the problem:
[tex]f \left( x \right) = \dfrac{ \left( x+3 \right) \left( x-3 \right) }{ x-3 }[/tex]
Set the factor "x - 3" equal to zero and solve for x
x - 3 = 0
Add 3 to both sides
x - 3 + 3 = 0 + 3
Simplify
x = 3
Now we need to solve for "y"
[tex]f \left( x \right) = \dfrac{ \left( x+3 \right) \left( x-3 \right) }{ x-3 }[/tex]
We change "f(x)", to "y"
[tex]y = \dfrac{ \left( x+3 \right) \left( x-3 \right) }{ x-3 }[/tex]
The two "x - 3" cancel out
y = x + 3
Substitute the x-value into the equation
y = 3 + 3
Add 3 and 3
y = 6
Now that we have our coordinates, we can write it as:
(x, y) = (3, 6)
So the answer is (3, 6)
The ratio of the sides of a triangle is 2:4:7. If the perimeter of the triangle is 182 cm what is the longest side?
Answer:
98 cm
Step-by-step explanation:
sum the parts of the ratio , 2 + 4 + 7 = 13 parts
divide perimeter by 13 to find the value of one part of the ratio.
182 ÷ 13 = 14 cm ← value of 1 part of the ratio , then
2 parts = 2 × 14 = 28 cm
4 parts = 4 × 14 = 56 cm
7 parts = 7 × 14 = 98 cm
the longest side is 98 cm
HELPPPPPPPPPPPPPPPPPPPPPPPPP
Can someone please help?!
Answer:
Go to symbolab . com and enter in the problems, it will give you the answers and show you the steps it took to solve them
Step-by-step explanation:
Write two equivalent ratios to 10:14
Answer:
20:28 and 30:42
Step-by-step explanation:
Answer:
[see below]
Step-by-step explanation:
10/2 : 14/2 = 5:7
10 * 2 : 14 * 2 = 20:28
Hope this helps.
The figure below is formed from a trapezoid and a right triangle.
E
9 cm
F
15 cm
G
15 cm
12 cm
20 cm
H
What is the total area of the figure?
O A. 240 cm2
OB. 264 cm?
OC. 288 cm2
OD. 300 cm
Answer: I think 288
Step-by-step explanation:
what is the volume of a right rectangular prism with a base that measures 4 in by 6 in. and a height of 7 in? a) 17 in.3. b) 51 in.3. c) 84 in.3. d) 168 in.3.
Answer:
d) 168 in.³
Step-by-step explanation:
volume = length × width × height
volume = 6 in. × 4 in. × 7 in.
volume = 168 in.³
Answer: d) 168 in³
Step-by-step explanation:
The volume of a right rectangular prism can be found by multiplying the base (the length times the width) by the height. Since we are given all the values needed, we can multiply them all together and find our answer.
V = length * width * height
V = 4 in * 6 in * 7 in
V = 168 in³
This gives us an answer of "d) 168 in³"
A worker is paid Rs. 2600 for 21 days work. If his total income of the month is Rs. 2400, for how many days he didn't work? I need it please
Step-by-step explanation:
please mark me as brainlest chelli
Which linear equation has no solution?
3/2 (9x +6) 3
5x + 12 = 5x -7
4x + 7 = 3x + 7
-3(2x - 5) = 15 - 6x
9514 1404 393
Answer:
5x + 12 = 5x - 7
Step-by-step explanation:
There will be no solution when the coefficients of x are the same on both sides of the equal sign and the constants are different. That is the case for ...
5x + 12 = 5x - 7
This reduces to ...
19 = 0 . . . . . no value of x will make this be true: NO SOLUTION
The rid Daaé’s Grave is 6min long. Dave thinks that the first ¼ of the ride was the most fun. How many minutes were the most fun for Dave. Solve Algebraically.
100 points first correct answer gets Brainlyest.
Answer:
Dave had most fun for 1.5 minutes.
explanation:
Let the "fun time" be f
total time * portion of time fun = fun time
[tex]\sf t * p = f[/tex]
[tex]\sf 6 \ * \frac{1}{4} = f[/tex]
[tex]\sf \frac{6}{4} = f[/tex]
[tex]\sf f = 1.5 \ minutes[/tex]
Question was for how many minutes, Dave had fun, so he had fun for 1.5 minutes
Let that half be x
So
[tex]\\ \rm\Rrightarrow x(4)=6min[/tex]
[tex]\\ \rm\Rrightarrow x=6/4[/tex]
[tex]\\ \rm\Rrightarrow x=1.5min[/tex]
Find the measure of angle BAD 53% 21%
Answer:
Can I see a picture? Or the angle diagram?
Please help fast!!! Part A How many solutions does the pair of equations for lines A and B have?
Explain your answer. (5 points)
Part What is the solution to the equations of lines A and B?
Explain your answer. (5 points)
Answer:
Part A: 1
Explain: The solution for a pair of lines is where they intersect.
Part B: (3,4)
Explain: (3,4) is the place where the lines intersect.
Helena’s family drank 4,600 milliliters of milk for breakfast on Friday. On Saturday they drank 2 times as much milk as they did on Friday. how many liters of milk did they drink in total?
Answer:
9.2 liters of milk
Step-by-step explanation:
4600 * 2 = 9200
9200 milliliters = 9.2 liters
(-3/8) times 1 times (-9/10) times -8/3
Step-by-step explanation:
-3/8 × 1 × -9/10 × -8/3
we know
- × - = +
+ × - = -
therefore, since we have 3 negative factors we get a negative result.
we can ignore the completely neutral multiplication by 1.
-3/8 × -9/10 × -8/3 = -(3×9×8)/(8×10×3) = -9/10
20. The diagram shows a supplementary angle. Determine the value of x. *
Answer:
C
Step-by-step explanation:
supplementary angles sum to 180° , then
3x + 15 + 60 = 180 , that is
3x + 75 = 180 ( subtract 75 from both sides )
3x = 105 ( divide both sides by 3 )
x = 35
A store gets a shipment of 1000 light bulbs. Due to a manufacturing problem, 200 of the bulbs are defective, but the store's manager is not aware of this. As she always does, however, the manager will check a sample of the bulbs to look for potential problems. How can she choose a sample of the bulbs to represent the shipment?
Answer:
Use a simple random sampling technique.
Step-by-step explanation:
Sampling is a procedure applied in statistical analysis where a fixed number of data (observations or individuals) are selected from a superior population. The approach used to select a sample from a population is determined on the basis of the type of analysis being executed.
To test for defective bulbs the store manager has to select a sample. She can select a sample of size n from the 1000 bulbs using the simple random sampling technique.
A simple random sample is a part of a statistical population in which every individual of the population has an equal probability of being selected.
Assigning each individual of the population a unique number and using a computer or random number generator for selection is a procedure to select a simple random sample.