Answer:
B) 3.5cm
Step-by-step explanation:
1/80 = n/280
1 * 280 = n * 80
280 = 80n
3.5 = n or n = 3.5
What is the value of x2 -9,when x = 10?
Answer:
12
Step-by-step explanation:
hope this helps!
Answer:
11
Step-by-step explanation:
First you would switch out the x with 10. Then you would do 10*2-9, 10*2= 20, 20-9= 11, and that will give you 11 as your answer.
pls help find the amount at the end of 6 hours
Answer:
A. 7,348
Step-by-step explanation:
P = le^kt
intitial population = 500
time = 4 hrs
end population = 3,000
So we have all these variables and we need to solve for what the end population will be if we change the time to 6 hours. First, we need to find the rate of the growth(k) so we can plug it back in. The given formula shows a exponencial growth formula. (A = Pe^rt) A is end amount, P is start amount, e is a constant that you can probably find on your graphing calculator, r is the rate, and t is time.
A = Pe^rt
3,000 = 500e^r4
now we can solve for r
divide both sides by 500
6 = e^r4
now because the variable is in the exponent, we have to use a log
[tex]log_{e}(6) = 4r[/tex]
ln(6) = 4r
we can plug the log into a calculator to get
1.79 = 4r
divide both sides by 4
r = .448
now lets plug it back in
A = 500e^(.448)(6 hrs)
A = 7351.12
This is closest to answer A. 7,348
(Select all the true statements. )
A.) after one week he collected 8.7 pounds of food
B.) after 8.7 weeks, he collected 1 pound of food.
C.) in 30 weeks , he should collect 261 pounds of food
D.) in 20 weeks , he collected 180 pounds of food
E.) the point (10, 100) is on the graph of the proportional relationship.
(Please I need help !!! )
Answer:
the answer is a
Step-by-step explanation:
David is a 3rd grade student who scores 78 on the test. Nancy is a sixth-grade student who scores 81.
Answer:
where is the thing that we have to do written on here?
What type of angle is angle R?
S.
R
A. acute
B. right
C. straight
D. obtuse
Answer:
D. Obtuse
Step-by-step explanation:
Answer:
Obtuse
Step-by-step explanation:
An obtuse angle is anything that is greater than 90 degrees but less than 180. If it was 180 the angle would be flat but if it was 90 it would be right. Because this is in the middle it is obtuse.
can someone plz answer asap
Answer:b
Step-by-step explanation:b
Answer:b
Step-by-step explanation:b
PLEASE HELP ME WITH THIS ALGEBRA QUESTION!! THANK YOU!!
Answer:
4a (n-1) + 5
Step-by-step explanation:
1th=6
2nd=29
3rd=121
4th=489
.
.
nth
if n=2
a2 = 4a(2-1) + 5 = 4 a(1) + 5 = 4 (6) + 5= 29
a3 =4a(3-1) + 5 = 4 a(2) + 5 = 4 (29) + 5= 121
try finding a4, check wether the answer is 489
Find the probability that when four numbers from 1 to 100, inclusive, are picked at random with no repetitions allowed, either all are odd, all are divisible by 3, or all are divisible by 5.
Answer:
The probability is;
0.076
Step-by-step explanation:
The count of numbers from 1 to 100 is 100
Let’s find the number of odd numbers
We can use;
a + (n-1)d = T
a is 1, d is 2 and T is 99
Thus;
1 + 2(n-1) = 99
n-1 = (99-1)/2
n-1 = 59
n = 50
So there are 50 odd numbers
Probability of selecting an odd number is 50/100 = 1/2
If all 4 are odd, we have 1/2^4 = 1/16
Let’s get the multiples of 3
we can use
a + (n-1)d = T
a = 3, n = ? , d = 3 and T = 99
So;
3 + 3(n-1) = 99
n-1 = 34
n = 33
So the probability is 33/100
All 4 are divisible will give 33/100^4
Multiples of 5
a + (n-1)d = T
a = 5, n = ? , d = 5 T = 100
5 + (n-1)5 = 100
5(n-1) = 95
n-1 = 19
n = 20
Probability is 20/100 = 1/5
All
four are multiples of 5
1/5^4 = 1/625
So the probability is;
1/16 + 1/625 + 0.01185921
= 0.0625 + 0.0016 + 0.01185921 = 0.07595921
Use the slope formula to find the slope between the given two points.
7. (4,9) and (1,6)
8. (-4,-1) and (-2,-5)
9. (5, 3) and (5,-9)
10. (2, 1) and (8,9)
11. (14, -8) and (7,-6)
12. (4, -3) and (8, -3)
13. (-7,-5) and (2,-8)
14. (-11, 1) and (-2, 6)
15. (-5, -1) and (-7, 2)
Answer:
7. 1
8. -2
9. undefined (meaning the line goes straight up and down)
10. 4/3
11. -2/7
12. 0 (meaning it is completely flat)
13. -1/3
14. 5/9
15. -3/2 or -1.5
Step-by-step explanation:
Answer:
7. 1
8. -2
9. Undefined (meaning the line goes straight up and down)
10. 4/3
11. -2/7
12. 0 (meaning it is completely flat)
13. -1/3
14. 5/9
15. -3/2 or -1.5
Step-by-step explanation:
What is the answer for the quotient
Answer:
0.91666666666
Step-by-step explanation:
if its wrong tell me
Answer:
10
Step-by-step explanation:
Strategy Keep change flip
Only use this strategy when dividing fraction not adding subtracting or multiplication
5/6 ÷1/12 would change to 5/ times 12/1
5/6 times 12/1 =60/6.
That an improper fraction so you see how many times 6 goes into 60 which is 10 times so the answer is 10
Hope I helped
Sixty-four is 66 2/3 percent of what number?
please answer quickly if you can
Answer:
n = 96
Step-by-step explanation:
[tex]66\frac{2}{3}[/tex] % = [tex]\frac{200}{3}[/tex] %
[tex]\frac{64}{n}[/tex] = [tex]\frac{\frac{200}{3} }{100}[/tex]
[tex]\frac{\frac{200}{3} }{100}[/tex] = [tex]\frac{2}{3}[/tex]
[tex]\frac{64}{n}[/tex] = [tex]\frac{2}{3}[/tex]
2n = 192 ⇒ n = 96
What is the slope of a line perpendicular to the line passing through (-23, 8) and (12, -17)
Answer:
[tex]m=\frac{7}{5}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Slope of a perpendicular line is the negative reciprocal of the originalStep-by-step explanation:
Step 1: Define
Point (-23, 8)
Point (12, -17)
Step 2: Find slope m
Substitute: [tex]m=\frac{-17-8}{12+23}[/tex]Subtract/Add: [tex]m=\frac{-25}{35}[/tex]Simplify: [tex]m=\frac{-5}{7}[/tex]Step 3: Find perpendicular slope m
Take negative: [tex]m=\frac{5}{7}[/tex]Take reciprocal: [tex]m=\frac{7}{5}[/tex]And we have our final answer!
The piecewise function f(x) has opposite expressions.
2x - 1,
x < 0
f(x) = 0,
x = 0
-2x + 1 x > 0
Which is the graph of f(x)?
Ty
t
5
3
2
20
2
1
-5 -4 -3 -2 -1
1
2
34
5
-5-4-3-2
2
3
4
5
-3-2
-2
Answer:
the first answer should be the one
Graph 2 has opposite expressions
Start by calculating the equations of the functions.
From the graphs, we have the following equations
Graph 1: y = -|2x| + 2Graph 2: y= 2x -2 and y= -2x - 2Graph 3: y = 2x - 1 and y = -2x + 1Graph 4: y = -2x + 1 and y = 2x - 1An opposite function is defined by y = f(x) and y = f(-x)
Graph 1 is an absolute value graph.
Check if y = f(x) and y = f(-x) is true for function 2.
We have:
[tex]f(x) = 2x - 2[/tex]
[tex]f(-x) = 2(-x) - 2[/tex]
[tex]f(-x) = -2(x) - 2[/tex]
For graph 2, f(x) and f(-x) are true.
Hence, graph 2 has opposite expressions
Read more about opposite functions at:
https://brainly.com/question/4292846
Just tell me like first one goes to... or like seconds one goes to..
90.10 rounded to the nearest whole number?
Answer:
it would be 90 because it has o be a 5 to 9 to round up but is a 1so you can round up
Step-by-step explanation:
Select the three fractions that are equal to 8/14
A) 4/7
B) 48/84
C)16/28
D) 2/3
E) 24/48
Answer:
A) 4/7 and C) 16/28 and B) 48/84
9 x -5=
help!!! I am stuck
Answer:
-45 is the answer good luck
Answer:
-45 is your answer hope this helps
What is the w
4w+3w=63
Answer:
7w=63
63÷7=9
so, (w=9)
Answer:
9
Step-by-step explanation:
3*9 = 27 4*9=36
36 + 27 = 63
is negative 9 an integer
-1/7÷-5/9
7/8÷8/9
Show the steps please
Write a simplified expression for the perimeter of the triangle.
Answer:
28p+23
Step-by-step explanation:
i think this is it I was only in 6th grade 2 years ago
A container holds 500 ml of liquid. How many liters will the container hold
Answer:
It would hold .5 liters because 1000ml is equal to 1 liter
Step-by-step explanation:
Which statement describes the image?
Answer:
d.) none are correct
Step-by-step explanation:
it should be reflection over the y-axis then reflection over the x-axis
-9 + 1/4x - 6 - 1/8x
Answer:
Assuming you want me to simplify your answer, the answer to your question is x/8-15.
Step-by-step explanation:
Simplify each term by combining 1/4 and x, and then combine x and 1/8 to get -9+x/4-6-x/8. Subtract 6 from -9 for x/4-15-x/8. Write x/4 as a fraction with a CD (Common Denominator) by multiplying by 2/2. Write each expression with a CD of 8. Combine the numerators, subract x from x*2 by reordering x and 2 to get 2*x-x/8-15. Then subract x from x to get x/8-15.
I will give you a pdf where it will be done and how I do it, I hope that it served you
use place value solve 947-586
Answer:
361
Step-by-step explanation:
Write it out like.. (900-40-7)-(500-80-6)=361
There are 400 students at Washington Middle School, and 100 of them are in sixth grade. What percent of the students are in sixth grade?
Pick the model that represents the problem.
Answer:
25%
Step-by-step explanation:
Why is “3 meals a day” a unit rate?
Answer:
Because it says A DAY which means 1 day
Step-by-step explanation:
Which means 3:1 that is a unit rate
HOPE THIS HELPS
PLZZ MARK BRAINLIEST
Answer:
C
Step-by-step explanation:
It is C because three meals are happening in a day. And c says three meals in one day. SO ya its c very hard to explain.
What is the answer this is due in 10 MINUTES
Answer:
The answer is D 5
Step-by-step explanation:
because you could multiply by 5 and divide by 5
its proportional
Evaluate 3x^2 – 2xy - 4y^2
when x = 2 and y = - 3.
A. 12
B. -36
C. -12
D. 36
Evaluate for x=2,y=−3
3(22)−(2)(2)(−3)−4(−3)2
3(22)−(2)(2)(−3)−4(−3)2
= C. −12
Paul joins a gym that has an initial membership fee and a monthly cost. He pays a total of $295 after three months, and $495 after eight months.
a) Identify the monthly cost.
b) What is the initial membership fee?
c) Write an equation for the total cost C as a function of the number of months, m. (so C is your y and m is your x)
d) Find how much Paul will have paid after one year.
Please give me answer.
Answer:
a
Step-by-step explanation: