In a lab experiment, 80 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 17 hours. How many bacteria would there be after 20 hours, to the nearest whole number?
Answer:
y = 181
Step-by-step explanation:
Doubling Formula:
[tex]y = a(2)^\frac{t}{d}[/tex]
y=80
d=17
t=20
plug in
y=80(2)[tex]^\frac{20}{17}[/tex]
y=180.818525349
y≈181
i hope this helps some!
Answer: 149
Step-by-step explanation:
$420 is divided between A, B and C. B receives $20 less than A, and C receives half as much as A and B together. how much does each receive?
Also could you explain the answer?
Answer:
A = $150
B = $130
C = $140
Step-by-step explanation:
Let the amount received by a be $x
b receives $20 less than a;
we have that;
b = x - 20
c receives half of Sum A and B
c = (x + x-20)/2
c = (2x-20)/2
c = x - 10
Add all and it gives 420
x - 10 + x -20 + x = 420
3x -30 = 420
3x = 420 + 30
3x = 450
x = 450/3
x =$150
a = 150
b = x - 20; 150 - 20 = 130
c = x-10
c = 150-10
c = $140
What is 4(1 + 9x) ?
Answer:
36x+4
Step-by-step explanation:
4*1+4*9x
help pls!!
A box contains 5 orange pencils, 7 green pencils, and 4 blue pencils what is the probability of randomly selecting a blue pencil from the box??
Answer:
1/4
Step-by-step explanation:
5 + 7 + 4 = 16
4/16 = 1/4
pls give me brainliest :)
what is 2 times 5 minus 1
what is 2 times 5 minus 1?
9
Ana ran 12.5 miles on week one of her training. On week two she ran 5 6/8 miles. How many more miles did she run on week 1 than week 2?
A. 7 5/6
B. 7 1/4
C. 17 7/10
D. 17 6/16
Answer: C
Step-by-step explanation: My first time sorry if I am wrong
[tex]\sqrt{\frac{2}{2}[/tex]
Which type of triangle has side measures of 5 cm, 9 cm, and 12.7 cm and one angle measure of 128°?
A.
acute isosceles
B.
obtuse scalene
C.
obtuse isosceles
D.
acute scalene
This question is dealing with classification of triangles based on angles or on number of equal sides.
the triangle is called an Obtuse Scalene Triangle
Now, the classification in terms of angles are;
- Acute angle is when the angle measures between 0 and 90 degrees.
- Obtuse angle is when the angle is greater than 90 but less than 180 degrees.
- right angle is when the angle is exactly 90 degrees.
- Reflex angle is when the angle is greater than 180 but less than 360 degrees.
Now the classification in terms of equal sides;
- Isosceles triangle is one that has 2 equal sides.
- Equilateral triangle is one that has 3 equal sides.
- Scalene triangle is one that has no equal sides.
The lengths of the three sides of the triangle given are;
5 cm, 9 cm, and 12.7 cm
The three sides are not equal and from definition above it is called scalene triangle.
The angle given is 128° and from definition earlier, it is an obtuse angle.
In conclusion, the triangle is called an Obtuse Scalene Triangle
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2. Which statement is not true in the equation
y = 0.5x?
A. The value of y is one-half times the value of x.
B. The equation represents an additive relationship.
C. The value of y is 4 when the value of x is 8.
D. The equation represents a multiplicative
relationship.
Answer:
B
Step-by-step explanation:
Point D has coordinates (4, 1). What are the coordinates of Rx = 2(D)?
Answer:
The coordinates of Rₓ = [tex]2^{(D)}[/tex] = D'(0, 1)
Step-by-step explanation:
As given, D = (4, 1)
Now,
The coordinates of Rₓ = [tex]2^{(D)}[/tex] = D'(0, 1)
how do you slove this equation
12 n3
-------
3(n4)2
Answer:
36n
----------------
24n
Answer:n to the fourteenth power
Step-by-step explanation:
You can use a table with 3 rows and 6 columns to show the sample space of combinations of a number followed by a letter using 3 numbers and 6 letters. What other table could you use? pleas help me
Group of answer choices
A) A table with 6 rows and 6 columns
B) A table with 6 rows and 3 columns
C) A table with 3 rows and 3 columns
D) A table with 9 rows and 2 columns
Answer:
I would probably pick letter B.
Step-by-step explanation:
If you had a table with 3 rows and 6 columns, wouldn't it be the exact same thing if you switched them up?
That would be my best guess!
Answer:
I would say B
Step-by-step explanation:
that just look like the right answer. because you would just switch them up. that is what I would choose
can someone please help me out with this problem ? i been trying to do this for like 2 days now and i still don’t get it .. also i need some tips on how i can remember this when im doing a different problem
Answer:
Step-by-step explanation:
the Pythagorean theorem is
c is the hypotenuse which is the side opposite of the right angle
plug the numbers into the Pythagorean theorem
[tex]x^2+(\sqrt{26})^2=13^2[/tex]
when squaring a square root, just take the number in the radical and get rid of the radical
[tex]x^2+26=169[/tex]
subtract 26 from both sides
[tex]x^2=[/tex][tex]143[/tex]
find the square root of 143
143 is prime so it can just be written as
[tex]x=\sqrt{143}[/tex]
Please help me! I will mark Brainliest.
What is Y and how did you do it?
Answer:
y very likely equals 3
Step-by-step explanation:
X goes up by 1 and for every 1, the y gets divided by 3. Assuming the y for 0 is 243, then divide by 3 = (1,81) and so on, becoming (4,3).
Use factoring to write an expression that is equivalent to 28w - 40.
Answer:
4(7w+10)
Step-by-step explanation:
Answer:
4(7w+10)
Step-by-step explanation:
what is the sum?
[tex] \binom{3}{5} + \binom{1}{5} [/tex]
Answer:
4/5
Step-by-step explanation:
Please help me with this homework
Answer:
Step-by-step explanation:
No Taxi - 95
No Bus total - 275
Yes Taxi total - 120
Total Total - 400
357 miles in 5 hours
Answer:
71.4 mph
Step-by-step explanation:
357/5 = 71.4
I'm not sure what your question is, but hope this helps
Answer:
71.4
Step-by-step explanation:
Lynn is making a snack. The recipes call for 38 cup of water for oats and 14 cup of water for dried fruit. She only has 1 cup of water. Does she have enough to make her snack? Explain. No. Both recipes call for more than 1 cup, so the recipes will use more than 2 cups altogether. No. Both recipes call for more than half a cup, so the recipes will use more than 1 cup altogether. Yes. Both recipes call for exactly 1 cup, so the recipes will use exactly 1 cup altogether. Yes. Both recipes call for less than half a cup, so the recipes will use less than 1 cup together
Answer:
3.4/6
Step-by-step explanation:
No, Lynn do not have enough water to make her snack.
What is the fraction?In Mathematics, fractions are represented as a numerical value, which defines a part of a whole. A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.
Given that, the recipes call for 3/8 cup of water for oats and 1/4 cup of water for dried fruit.
You need to add up the quantities of water needed first. That will then tell if she has enough water.
Convert the fractions to decimals then add them up:
3/8 = 0.375
1/4 = 0.25
= 0.25 + 0.375
= 0.625 cups of water is required.
This is less than the 1 cup she has so she has enough water to make the snack.
No, Lynn do not have enough water to make her snack.
To learn more about the fraction visit:
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"Your question is incomplete, probably the complete question/missing part is:"
Lynn is making a snack. The recipes call for 3/8 cup of water for oats and 1/4 cup of water for dried fruit. She only has 1 cup of water. Does she have enough to make her snack? Explain
i need help i will get a zero if i dont
Answer:
You would multiply 7cm twice. and then multiuply 9 twice and then you add the two sums.
so 49 plus 81 is 130
so you have 130 cm.
Step-by-step explanation:
Hope this helps Im bad at math.
Find the length of a
Help plz ASAP
Answer:
Hey there!
Your answer is c)
Answer:
2√5
Step-by-step explanation:
The triangle that's shown on the page is a special isosceles right triangle with angle measures of 45° - 45° - 90°
Since one of the side length that sees 45° angle measure is 2√5 the other also has to be equal to this value so the answer is 2√5
Ricardo wants to install a dog run in his backyard. If he wants it to be 15 feet wide by 18 feet long, how much fencing will he need to install? Use the formula P= 2L + 2W to solve. PLEASEEE HELPPP
Answer:
56 feets
Step-by-step explanation:
Length, L = 15
Width, W = 18
Using the relation ; Perimeter, P :
P= 2L + 2W
P = 2(15) + 2(18)
P = 20 + 36
P = 56 feets
What is the product ([tex](7\sqrt{8} +3\sqrt{12} )(7\sqrt{8} -3\sqrt{12})[/tex]?
Solve the equation
x/-2-17=-7
Answer: x= -20
Step-by-step explanation: hope it helps thx for the points
Answer:
Step-by-step explanation:
William has a sticker album. Some pages have 1 sticker on them, and other pages have 2 stickers on them. If William has 18 stickers, how many different ways can he put the stickers in the album?
Answer:
6 ways
Step-by-step explanation:
William has a sticker album.
We are told in the question that:
Some pages have 1 sticker on them, and other pages have 2 stickers on them. If William has 18 stickers
The many different ways that can he put the stickers in the album is calculated as:
18 stickers ÷ ( 1 stickers + 2 stickers)
= 18 ÷ 3
= 6 ways
Therefore, the different ways that he can put the stickers in the album is 6 ways
6^2 – 7(8 + 6. – 3^2)
The value of the expression is
?
Find the value of x in the kite below.
x = [?]
Enter the number that goes in the green box.
Please helppp
What is the area of the composite shape?
Answer:
292 sq yd
Step-by-step explanation:
I believe you can multiply 26 x 29 and then subtract 21 x 22 from that
26 x 29 = 754
21 x 22 = 462
754 - 462 = 292
Given m||n, Find the value of x. Need help.
9514 1404 393
Answer:
x = 12
Step-by-step explanation:
The two marked angles are a linear pair, so are supplementary.
(8x -20)° +(8x +8)° = 180°
16x -12 = 180 . . . . . . . . . . . divide by °, collect terms
16x = 192 . . . . . . . . . . . add 12
x = 12 . . . . . . . . . . . divide by 16
Brad has $75 in his savings account and adds $25 every month he doesn't make any withdrawals from the account which inequality shows the number of months it would take Brad to save at least $200
The inequality representing the problem will be x+3 ≥ 8
What is inequality?A relationship between two expressions or values that are not equal to each other is called inequality.
Given that, Brad has $75 in his savings account and adds $25 every month he doesn't make any withdrawals from the account, and saves at least $200.
Let the number of months be x,
75 + 25x ≥ 200
25(3+x) ≥ 200
x+3 ≥ 8
Hence, The inequality is x+3 ≥ 8
For more references on inequality, click;
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