Answer:
11 miles
Step-by-step explanation:
10-1.75=8.25
8.25÷.75=11
Help I will mark brainliestttt
Answer:
20
Step-by-step explanation:
5+0.65t=10+0.45t
0.25t=5
t=20
Element X is a radioactive isotope such that every 51 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 7500 grams, how long would it be until the mass of the sample reached 6900 grams, to the nearest tenth of a year?
Answer: It will take 6 years for 7500 grams of X to reach 6900 grams.
Step-by-step explanation:
Expression for rate law for first order kinetics is given by:
[tex]t=\frac{2.303}{k}\log\frac{a}{a-x}[/tex]
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
a) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
[tex]51=\frac{0.69}{k}[/tex]
[tex]k=\frac{0.69}{51}=0.0135years^{-1}[/tex]
b) for 7500 g to reach to 6900 g
[tex]t=\frac{2.303}{0.0135}\log\frac{7500}{6900}[/tex]
[tex]t=6years[/tex]
It will take 6 years for 7500 grams of X to reach 6900 grams.
-b-3b+8b+4 in simplest form
Answer:
4b+4
Step-by-step explanation:
−b+−3b+8b+4
Combine Like Terms:
=−b+−3b+8b+4
=(−b+−3b+8b)+(4)
=4b+4
please choose the correct answer due at 11:59
Answer:
B
Step-by-step explanation:
if you line up the months (x) with the money (y) evrything lines up correctly whe you look at the points on the graph
hope this helps <3
Can someone please help me out with this I’ll mark u brainliest
Answer:
Angles on a straight line
180-156= 24
a=24 degrees
Answer: 24
180-156=24
a= 24
hope this helps:
a line should equal to 180°
A medication cost $4.40 per pound. As the assistant to the accountant, find the cost per kilogram. (1 kg ≈ 2.2 lb)
Answer:
i believe its 2$ per pound but not completely sure
Step-by-step explanation:
I WILL GIVE YOU BRAINLY PLSS
The equation c = 3h + 50 is used to determine a gym membership fee. Use the
equation to find out how much it would cost if h = 10. c = total cost h =hours
A. c = $63
B. c = $160
C. c = $80
D. c = $60
PLSS SHOW YOUR WORK PLSS
Answer:
C
Step-by-step explanation:
h=10 so plug that into the given equation
c=3(10) +50
c=30+50
c=80
Answer: C, c = $80
Step-by-step explanation:
c = 3h + 50
c = 3 (10) + 50
c = 30 + 50
c = 80
The total cost is $80
Hope that helped!
Help out pls ill mark u brainliest
Answer:
B = 119
C = 119
Step-by-step explanation: 180 - 61
B and C are vertical angles
Due to the distribution of the new iPhone, smartphone sales at Cinq's Electronic store has increased by
27% from the last year. This trend is expected to continue. If 8,500 phones were sold in 2018, how
many smartphones will be sold in 2025 using the same growth rate? Be sure to include the exponential
formula that can be used to model the sale growth.
Answer:
24565 phones sold in 2025
Step-by-step explanation:
dont know the formula. srry
Hope this helps!
Which is a graph of y=3x-1
Please help me I’m very stuck?
Answer:
The 1st one
Step-by-step explanation:
-81 = 5x + 3x + 3x - 1
solve the multi step equation
Answer:
x= -7.27
Step-by-step explanation:
-81 = 5x + 3x + 3x - 1
combine all like terms
-81=11x-1
add 1 on both sides
-81=11x-1
+1 +1
-80=11x
divide by 11 on both sides to get x by itself
-80/11=11x/11
x=-7.27
Find the distance between -6.3 and -5.5 on a number line. Write your answer as a decimal.
Answer:
0.8
Step-by-step explanation:
There are three consecutive integers, such that six times the first, minus two times the second, equals the third integer plus five. What is the first integer described? Will give Brainliest!!!!!!!!!!!!
Answer:
3
Step-by-step explanation:
Given that:
Integers : x, x + 1, x + 2
6x - 2(x + 1) = (x+2) + 5
6x - 2x - 2 = x + 2 + 5
4x - 2 = x + 7
4x - x = 7 + 2
3x = 9
x = 9/3
x = 3
First integer = x = 3
2nd integer = x + 1 = 3+1 = 4
3rd Integer = x + 1 + 1 = 3 + 2 = 5
Write a unit rate for the situation.
$100 donated for every 5 volunteers
PLZZZ I NEED HELP
Answer:
50 dollors
Step-by-step explanation:
simplify the expression using the distributive property y(2+x)
Answer:
bshem
the
h
he
n
where
he
START Startkaro
à
Answer:
2y +xy
Step-by-step explanation:
i think this is what you are looking for
Solve for ddd. 6d-\dfrac{11}2=2d-\dfrac{13}26d− 2 11 =2d− 2 13 6, d, minus, start fraction, 11, divided by, 2, end fraction, equals, 2, d, minus, start fraction, 13, divided by, 2, end fraction d=d=
Answer:
[tex]d = -\dfrac{1}{4}[/tex]
Step-by-step explanation:
Given
[tex]6d-\dfrac{11}2=2d-\dfrac{13}{2}[/tex]
Required
Solve for d
[tex]6d-\dfrac{11}2=2d-\dfrac{13}{2}[/tex]
Collect Like Terms
[tex]-2d + 6d=-\dfrac{13}{2}+\dfrac{11}{2}[/tex]
[tex]4d=-\dfrac{13}{2}+\dfrac{11}{2}[/tex]
Take LCM
[tex]4d=\dfrac{-13+11}{2}[/tex]
[tex]4d=\dfrac{-2}{2}[/tex]
[tex]4d = -1[/tex]
Make d the subject
[tex]d = -\dfrac{1}{4}[/tex]
Mr. Snow keeps a list of vocabulary terms that he wants his students to memorize from the textbook.
He began the year with 15 terms on the list. Of the 35 new terms in each chapter, Mr. Snow puts the definition of 10 terms on the wall and adds the remaining terms to the vocabulary list to be memorized.
question:
the number of terms on the vocabulary list can be represented by a linear function. Identify the rate of change and initial value of this function. Explain what these value represent in term of the situation.
Answer:
Step-by-step explanation:
35(6)x12=224
Number 33 WILL GIVE BRAINLIEST ANSWER QUICKLY
Answer:
A
Step-by-step explanation:
67/20 improper fraction when changed to a mixed number is
3 7/20
that is equal to
3 14/40
Here is a base-ten diagram that represents 1.13.
Use the diagram to find 1.13\:-0.461.13−0.461.13 − 0.46.
Answer: 0.67
Step-by-step explanation:
Consider the enlargement of the pentagon. A small pentagon has a bottom side length of x centimeters and left side length of 7 centimeters. A larger pentagon has a bottom side length of 7 centimeters and left side length of 15 centimeters. Not drawn to scale What is the value of x, rounded to the nearest tenth? 2.1 centimeters 3.3 centimeters 7.0 centimeters 15.0 centimeters
Answer:
[tex]x = 3.3cm[/tex]
Step-by-step explanation:
Given
Shape: Pentagon
Small
[tex]Bottom = x[/tex]
[tex]Left = 7cm[/tex]
Big
[tex]Bottom = 7cm[/tex]
[tex]Left = 15cm[/tex]
Required
Find x
From the question, we understand that the big pentagon is a dilation of the small pentagon.
What this means is that; both pentagons will have the same equivalent ratio.
The equivalent ratio, in this case is calculated using
[tex]Ratio = \frac{Bottom}{Left}[/tex]
For the small pentagon:
[tex]Ratio = \frac{x}{7cm}[/tex]
For the big pentagon:
[tex]Ratio = \frac{7cm}{15cm}[/tex]
Equate both ratios:
[tex]\frac{x}{7cm} = \frac{7cm}{15cm}[/tex]
[tex]\frac{x}{7cm} = \frac{7}{15}[/tex]
Cross multiply
[tex]15 * x = 7cm * 7[/tex]
[tex]15 * x = 49cm[/tex]
Make x the subject
[tex]x = \frac{49cm}{15}[/tex]
[tex]x = 3.267cm[/tex]
[tex]x = 3.3cm[/tex] --- approximated
Answer:
The answer should be 3.3
Step-by-step explanation:
I'm taking the test right now.
Which expression represents the calculation the sum of x and 8 is divided by 6
The required expression model is given as x + 8 / 6. Option B is correct.
Given that,
To determine the expression represents the calculation the sum of x and 8 is divided by 6
What are equation models?
The equation model has defined as the model of the given situation in the form of an equation using variables and constants.
here,
According to the question,
The sum of x and 8 = x + 8
divided by 6
= x + 8 / 6
Thus, the required expression model is given as x + 8 / 6. Option B is correct.
Learn more about models here:
https://brainly.com/question/22591166
#SPJ2
(2y^3-5y^2-4)-(4y^3+11y^2-3y+5)
On a coordinate plane, point A is 1 unit to the left and 1.25 units up. Point B is 1.25 units to the left and 0.25 units up. Point C is 0.25 units to the left and 1 unit down. Point D is 0.25 unit to the left and 0.25 unit up.
Which point is located at (Negative 1, 1, and one-fourth)?
A
B
C
D
Answer:
It is Number A
Step-by-step explanation:
Got it off edge 2021 6th grade assighnment
Answer:
a lol
Step-by-step explanation:
What is the equation of the line
with the points (1, 4) and (5, 12)?
12
Answer:
y = 2x + 2
Hope you have a great day!
A tortoise walks 3 inches in 1 second. How many feet per second can the tortoise walk?
Answer:
0.25
Step-by-step explanation:
Zahra completed a 5-kilometer race in 40 minutes. If she were able to keep the same pace, how many kilometers could she run in 72 minutes? 6 7 8 9
Answer:
9
Step-by-step explanation:
you can set up a proportion for it (i included a picture of it)
Answer:
I am just doing this to confirm the other person is right. It is 9.
Step-by-step explanation:
Your receipt for your visit at a restaurant is
shown below. If you leave a 15% tip, what is the
new total amount? Explain your method.
pls hurry
Answer:
36.66
Step-by-step explanation:
Basically you just find the tip 4.782 and add it to 31.88 the total. 36.662 and then round to to get 36.66.
Answer:
36.66
Step-by-step explanation:
Basically you just find the tip 4.782 and add it to 31.88 the total. 36.662 and then round to to get 36.66.
P + N = 8, where P = pennies and N = nickels. If the value of the coins is 28 cents, what other equation is necessary to find the number of each coin?
Select one:
a.
P + 5N = 28
b.
5P + N = 28
c.
P + 28 = 5N
d.
(1 + 5)N = P
e.
8 + N = 28
Answer:
a.
P + 5N 28
Step-by-step explanation:
The value of the coins is 28 cents. This means that if one were to account for the total money, it would amount to 28. So one would multiply the number of nickles by 5, (because one nickel is 5 cents), and the number of pennies by 1, (because a penny is one cent). The one would add the resulting values up to attain 28. The equation given in option A represents that, hence it is the correct answer.
A subset of values of the function g(x) is shown in the following table.
Answer:
Option (4)
Step-by-step explanation:
x g(x) Ist difference IInd difference Ratio
1 13 - - -
2 3 3 - 13 = -10 - [tex]\frac{3}{13}[/tex]
3 -3 -3 - 3 = -6 -6 - (-10) = 4 [tex]\frac{-3}{3}=-1[/tex]
4 -5 -5 - (-3) = -2 -2 - (-6) = 4 [tex]\frac{-5}{-3}=\frac{5}{3}[/tex]
5 -3 -3 - (-5) = 2 2 - (-2) = 4 [tex]\frac{-3}{-5}=\frac{3}{5}[/tex]
This table depicts,
1). Ist difference is not common
2). IInd difference is common
3). Ratio is not common
Therefore, this table represents a quadratic function because the second difference are all the same value.
Option (4) will be the answer.
What is the slope of the line that passes through the points (-9,8) and
(-21, 10)? Write your answer in simplest form.
Answer:
The slope is -1/6
Step-by-step explanation:
We simply use the slope formula here
Mathematically, we have this as;
m = (y2-y1)/(x2-x1)
thus;
m = (10-8)/(-21 + 9) = 2/-12 = -1/6
