Twice the sum of a number and 7 is equal to three times the difference of the number and 8. Find the number.
Answer:
the number is 10.
Step-by-step explanation:
2(x + 7) = 3(x - 8)
2x + 14 = 3x - 24
2x = 3x -10
x = 10
How many days will it take a culture of bacteria
to increase from 400 to 40,000 if the growth rate
is 83.4% per day?
A. 7.1 days
B. 7.4 days
C. 7.6 days
D. 7.9 days
Answer:
BTris-HCl (0.5M Tris Base, pH7.6):
Trizma Base ---------------------------------- 61 g
Distilled water ------------------------------- 1000 ml
Adjust pH 7.6 using concentrated HCl
Store this solution at room temperature. Dilute 1:10 with distilled water before use
and adjust pH if necessary.
20X Tris-HCl (1M Tris Base, pH7.6):
Trizma Base ---------------------------------- 122 g
Distilled water ------------------------------- 1000 ml
Adjust pH 7.6 using concentrated HCl
Store this solution at room temperature. Dilute 1:20 with distilled water before use
and adjust pH if necessary.
10X Tris-HCl-Tween 20 (0.5M Tris Base, 0.5% Tween 20, pH7.6):
Trizma Base ---------------------------------- 61 g
Distilled water ------------------------------- 1000 ml
Adjust pH 7.6 using concentrated HCl and then add 5 ml of Tween 20.
Store this solution at room temperature. Dilute 1:10 with distilled water before use
and adjust pH if necessary.
Note: Tris-HCl Buffer is used for specific cases of immunohistochemical staining.
*** OR you can use Tris Base to make Tr
Answer:
Step-by-step explanation:
7.6 days
Which equation is equivalent to 16^2p = 32^p+3?
Answer:
C. 2^8p=2^5p+15
Step-by-step explanation:
What is the area of this triangle?
Enter your answer in the box.
Answer:
10 square units
Step-by-step explanation:
Base of triangle (b) = 4 units
Height of triangle (h) = 5 units
Therefore,
Area of triangle
[tex] = \frac{1}{2} bh \\ \\ = \frac{1}{2} \times 4 \times 5 \\ \\ = 2 \times 5 \\ \\ = 10 \: {units}^{2} [/tex]
One of the angles in an isosceles triangle is 74°.
What could the other two angles be?
Answer:
we know that isoceles has pair of angle with same measurement and sum of interior angle of triangle is 180°
Step-by-step explanation:
Let other angle be x
x+x+74°= 180°
=> 2x = 180°-74°
=>x = 106°/2
=> x= 53°
If one of the angles in an isosceles triangle is 74°. Then the other two angles will be 53°.
What is the triangle?A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.
In an isosceles triangle, two angles and their opposite sides are equal.
One of the angles in an isosceles triangle is 74°.
Let the other angle be x.
Then the value of x will be
x + x + 74° = 180°
2x = 180° – 74°
2x = 106°
x = 53°
More about the triangle link is given below.
https://brainly.com/question/25813512
#SPJ2
ILL MARK AS BRAINLEST
Twice Carrie’s age increased by three is equal to twenty-five. Which equation can be used to find Carrie’s age, x?
A.
2(x + 3) = 25
B.
2(3) + 25 = x
C.
2x + 3 = 25
D.
x + 2(3) = 25
Answer:
im pretty sure the answer is c
HELP RQQQQQQQQQQ plzzzzzz
Answer:
5 x - 2x + 7 - x = 2x + 7
Step-by-step explanation:
simplify
(5x - 2x - x) = 2x
2x + 7 = 2x + 7
9/4 ÷ 3/4 = ??????????
3/1 so 3
9 \3 = 3
4/4= 1
the denominator is 1 because they are both the same whole number.
REMEMBER: (you are beautiful and deserve the world. you deserve to be treated like it. U deserve love, and i know without a shadow of doubt you will find it. you are that amazing. Your story is not to be silenced its your story so own it!
I hope this helped you and i hope you have a wonderful rest of your day :)
~hailey lee~
what is 7/8 days in hours
Will give brainliest! What is the solution to the following system of equations?
3x + y = 14
2x - 2y = 12
A) ( 5, -1 )
B) ( 1, 5 )
C) ( 4, 2 )
D) ( 7, 1 )
E) ( -5, 7 )
No explanation required
Answer:
5, -1
Step-by-step explanation:
I didnt get the correct answer doing it by hand, but with another app I was able to get the answer. I apologize.
Estimate the following product using a power of ten
Find an explicit rule for each geometric sequence using subscript notation. Use a calculator and round your answers to the nearest tenth if necessary.
The fifth term of a geometric sequence is 7. The sixth term is 3.5.
Answer:
aₙ = 224(1/2)ⁿStep-by-step explanation:
Given GP with:
a₅ = 7a₆ = 3.5We can find the common ratio:
r = 3.5/7 = 1/2Using the nth term formula we can work out the first term:
aₙ = a₁rⁿ⁻¹a₅ = a₁(1/2)⁴7 = a₁ (1/16)a₁ = 7*16a₁ = 112So the explicit rule is:
aₙ = 112(1/2)ⁿ⁻¹ = 224(1/2)ⁿJoe asked the children in his class which flavours of ice-cream they like.
He recorded the results in a Venn diagram.
How many children like chocolate ice-cream?
Answer:
a. 19
b. 14
Step-by-step explanation:
From the venn diagram, we see that:
9 children like only Vanilla
7 like vanilla and chocolate
12 like only chocolate, and
2 like neither chocolate nor vanilla
Thus:
a. Number of children that liked Chocolate ice-cream = those that like chocolate only + those that like both chocolate and vanilla = 12 + 7 = 19
19 children like chocolate ice-cream.
b. Number of children who do not like Vanilla ice-cream = those that like chocolate only + those that do not like neither chocolate nor vanilla = 12 + 2 = 14
14 children do not like vanilla ice-cream.
help with this please and thank you
*will mark brainliest*
Answer:25
13
Step-by-step explanation:
Answer:
Group A IQR = $700
Group B IQR = $400
Group A's IQR is Greater Than Group B's IQR, so the salaries in the middle 50% for Group A are More spread out than those for Group B.
Step-by-step explanation:
Subtract the minimum value from the maximum value of each group's big box on the graph to get their IQR's
I NEED HELP ASAP I WILL MARK YOU BRAINLIEST
What is the definition of Linear Angle?
A pair of angles that lie on the same plane, have a common vertex, and share a common side
or
A pair of angles that have a common side and same vertex, and the sides points in opposite directions.
or
A pair of angles that are opposite of each other and formed by two intersecting lines.
Answer:
The angles are said to be linear if they are adjacent to each other after the intersection of the two lines. The sum of angles of a linear pair is always equal to 180°. Such angles are also known as supplementary angles. The adjacent angles are the angles which have a common vertex.
9. Cameron uses a $10 bill to purchase an item
that costs d dollars. Which equation represents
the amount of change c that he should receive?
Independent
Variable
Dependent Variable
Equation:
E
U
Solution: If Cameron s purchase costs $5.50, how
much change will he receive?
n
Answer:
hi
Step-by-step explanation:
hi
Convert the measurement.
142.0 grams ≈ ? ounces
Plz help what’s the length of the side
Answer:
12
Step-by-step explanation:
Pythagoras Theorem is clearly used in this question.
To Calculate the Hypotenuse:
C = [tex]\sqrt{a^2+b^2}[/tex]
The Adjacent angle has already given as 9, so you can factor that into the question.
In Order to calculate the Opposite angle you need to use the following formula.
[tex]b = \sqrt{c^2-a^2}[/tex]
With the integers we already have for both Hypotenuse and Adjacent factored in this will be your equation:
[tex]b = \sqrt{15^2-9^2} = 12[/tex]
Therefore you answer is 12, Hope this helps, feel free to make as brainilest.
1a) solve the equation
Garett uses 5 apples to bake an apple pie. On sunday, he bakes 2 pies. How many apples does Garett need on Sunday. Write an equation that could be use to find the answer to this problem.
pls help will give brain list
Answer:
9
Step-by-step explanation:
round your answer to the nearest tenth
Answer:hi
Step-by-step explanation:
A circles diameter is 10 yards what is the circles area using 3.14
Answer:
[tex]78.5yd^{2}[/tex]
Step-by-step explanation:
The formula to find the area of a circle of is: A = [tex]\pi r^{2}[/tex]
However, the question wants to use 3.14 instead of pi.
We need to find the radius. The radius of the circle is half the diameter. So, the radius to 5 yards.
Now we just plug in the formula.
[tex]A=3.14*(5yd)^{2} \\A=3.14*25yd^{2} \\A=78.5yd^{2}[/tex]
Suppose a normal distribution has a mean of 222 and a standard deviation of
16. What is the probability that a data value is between 206 and 230? Round
your answer to the nearest tenth of a percent.
A. 91.0%
B. 66.9%
C. 53.3%
D. 84.0%
Answer:
C) 53.3%
The probability that a data value is between 206 and 230
P( 206 ≤X≤230) = 0.5328 = 53.3%
Step-by-step explanation:
Explanation
Given that Mean of the Normal distribution(μ) = 222
Given that the standard deviation of the Normal distribution (σ) = 16
Let 'X' be the random variable in the Normal distribution
we have to find that the probability that a data value is between 206 and 230
solution:-
Step(i):-
Let 'X' = 206
[tex]Z = \frac{x^{-}-mean }{S.D} = \frac{206-222}{16} = -1[/tex]
Let X = 230
[tex]Z = \frac{x-mean }{S.D} = \frac{230-222}{16} = 0.5[/tex]
Step(ii):-
The probability that a data value is between 206 and 230
P( 206 ≤X≤230) = P( -1≤Z≤0.5)
= |A(0.5)+A(-1)|
= 0.1915+0.3413
= 0.5328
final answer:-
The probability that a data value is between 206 and 230
P( 206 ≤X≤230) = 0.5328 = 53.3%
anna, ben, and cindy are standing in a line. anna and ben are 10 feet apart, cindy and ben are 12 feet apart, and cindy and anna are 2 feet apart. who is standing in the middle?
Answer:
Cindy
Step-by-step explanation:
Mila has 9 buttons. Mia has 225 buttons. Mia has how many times as Mila?
Answer:
25
Step-by-step explanation:
225 divided by 9 is 25
HELP PLEASEEEEEEEEEEEEEE
Arionna needed to graph triangle PQR reflected across the y-axis. Her work is shown below.
Arionna’s Work:
Blue right-arrow red. P (3,7) right arrow P prime (3, negative 7). Q (0, 4) right-arrow Q prime (0, 4). R (5, 8) right-arrow R prime (negative 5, 8).
Answer:
A and E
Step-by-step explanation:
Took the test. If it’s wrong please tell me. I would like to know :)
Answer:
A,E
Step-by-step explanation:
I need help with this. Mostly just 2a and 2b.
2a. A(t) = π(70 + 6t)^2 (Let t = 2 hours)
A(2) = π(70 + 6(2))^2 = 6724π
Now let t = 0 hours (result from part 1)
A(t) = π(70 + 6(0))^2 = 4900π
Average rate = 6724π - 4900π/2-0 = 912π
912π area covered per hour
2b. Let t = 1/2 hours, A(t) = π(70 + 6(1/2))^2 = 5329π,
Let t = 0 hours - result from last time was 4900π,
Average rate = 5329π - 4900π/1/2 - 0 = 858π
858π area covered per hour
What color is the height?
Area= 1/2 base . height
I gave Brainlist
Answer:
The red one?
Step-by-step explanation:
Sorry if my answer is wrong