Answer: 3mph
Step-by-step explanation:
Speed is calculated as Distance/Time.
Igor's distance = Speed × Time
= 6 × 2
= 12m
Since they ran same distance, Sally also ran 12m
Sally's speed = Distance/Time
where,
Distance = 12m
Time = 4 hours
Average speed = 12/4 = 3mph
Solve: 5x=-6x+9
A: x= -9
B: x= -9/11
C: x= 9
D: x= 9/11
Answer:
x = 9/11
Step-by-step explanation:
5x = -6x + 9
Add 6x to both sides
11x = 9
Divide both sides by 11
x = 9/11
Answer:
X Equals 9/11
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable. So X will equal 9/11, which in decimal form is 0.81.
Cameron and Cadena go out to eat for lunch. Part A If their food and beverages cost $22.50 and there is a 9% meals tax, how much is the bill? Write your answer to the nearest cent
Answer:
24.53
Step-by-step explanation:
9% of 22.50 = 2.03
22.50 + 2.03 = 24.53
Answer:
24.53
Step-by-step explanation:
Three different, positive integers have a
mean of 8 and a median of 11. Find the
three numbers.
Answer: mean is 8, median is 11
Step-by-step explanation:
Someo ne pllllzzzz help me asap i will give brain thingy and 20 points!
Part 1) Finding the inverse
Let x = r and y = H(r)
We have the equation y = 6240(1 + x/100)^t which is the same as saying y = 6240(1 + 0.01x)^t since 1/100 = 0.01
From here, swap x and y to get the equation x = 6240(1+0.01y)^t
Let's solve for y
x = 6240(1+0.01y)^t
6240(1+0.01y)^t = x
(1+0.01y)^t = x/6240
1+0.01y = (x/6240)^(1/t)
0.01y = (x/6240)^(1/t)-1
100*0.01y = 100*((x/6240)^(1/t)-1)
y = 100*((x/6240)^(1/t)-1)
y = 100*(x/6240)^(1/t) - 100
This becomes r = 100*(H/6240)^(1/t) - 100 after we replace y with r and x with H. Note the r and H swapped places, just like x and y did. Earlier we had H isolated on the left, but now r is isolated on the left.
We could write r(H) = 100*(H/6240)^(1/t) - 100 to mean the same thing.
So what exactly does this inverse function do? Well the original function tells us the number of households for any given growth rate, which is r.
The inverse function swaps things around to allow us to find the growth rate if we know how many households there are. We're working backwards. In both cases, t is held to some constant fixed value.
===========================================================
Part 2) Finding the growth rate if the number of households is 7800 after 3 years.
We're going to plug in H = 7800 and t = 3 into the inverse function we found to determine the value of r, or r(H)
r(H) = 100*(H/6240)^(1/t) - 100
r(7800) = 100*(7800/6240)^(1/3) - 100
r(7800) = 7.72173450159419
You'll need your calculator to get this approximate value. After rounding to two decimal places, we get r(7800) = 7.72
Since r = 7.72, this means the growth rate is 7.72%
=
Solve for x.
18+x=y
x = 0
?
Answer:
The answer is 18
Step-by-step explanation:
18 + x really means 18 + 0, because x is equal to 0
and if 18 + x = y, it means 18 + 0 = y,
so y is equal to 18
hope this helped!
if 3x=2z, then 2z=3x whats the explanation
Answer:
3x+2z =8. 2x=4
Step-by-step explanation:
Answer: Symmetric property
Step-by-step explanation:
This is the Symmetric property.
The Symmetric property states: If x=y, then y=x. This fits the question, since 3x=2z, then 2z=3x.
Hope this helps!! :)
Please let me know if you have any questions
write the equation of a line in slope-intercept form that has a slope of 5/3 and passes through the point (6,7)
Answer:
y=5/3x+-3
Step-by-step explanation:
h+50 1/6=−200 2/5 Please answer due on 2/10
A family went to a basketball game. They parked the car in a parking lot which charged $5. The cost per ticket was $24. Write an equation for the total cost of going to the basketball game, where y is the total cost an x is the total number of people. If the family spent $173, how many people went to the game?
Answer:
7 people went to the basketball game.
Step-by-step explanation:
Giving the following information:
They parked the car in a parking lot which charged $5. The cost per ticket was $24.
To calculate the number of people, we need to use the following formula:
Total cost (y)= x*24 + 5
173 = 24x + 5
168/24 = x
7 = x
7 people went to the basketball game.
William can pack 60 toys in 4 hours. Find the unit rate with which he packs
toys.
A.16 toys/hour
B.15 toys/hour
C.14 toys/hour
D.13 toys/hour
please help!!!!!! i need this done asap!!! brainliest to whoever answers!!
Answer:
volume = Pi(2x^2+3x-5) x (2x+5)^2 or P1(8x^4+52x^3+100x^2-125)
Step-by-step explanation:
radius = (4x+10)/2 = 2x+5
volume = Pi(2x^2+3x-5) x (2x+5)^2
volume = Pi(2x^2+3x-5) x (4x^2+20x+25)
volume = P1(8x^4+52x^3+100x^2-125)
There is a bag with 50 popsicles inside. 5
are red, 15 are orange, 12 are blue, 8 are
yellow and 10 are purple. If you were to
grab one popsicle from the bag, what is
the probability that it is purple?
Answer:
25%
Step-by-step explanation:
We know that there are ten purple popsicles. Together without the purple popsicles, there are 40 popsicles in total. Therefore there is a 10/40 chance to get purple. We need to turn this into a percentage so we do (10 / 40) x 100. This would equal to 25%, therefore, there is a 25% probability to get a purple popsicle.
the expression 2L+2w is used to find the perimeter of a rectangle with length L and width w. What is the perimeter of a rectangle with length 15cm and width 4cm?
Answer:
38cm
Step-by-step explanation:
p=2l+2w=2×15cm+2×4cm=30cm+8cm=38cm
Suppose f(x) = 5x - 2x... Find f(2)
Question : Find the length of the missing side. round your answer to the nearest tenth.
Answer:
8.5
Step-by-step explanation:
What is the value of the 3 in 16.35 ?
Answer:
3 tenths
Step-by-step explanation:
The face and place value of 3 in the decimal number 16.35 is, 3 and 3×10⁻¹.
What is the standard decimal form of numbers?The standard decimal form of numbers is written in base 10 as there are 10 different numbers from 0 to 9.
Each digit has a face value and a place value.
We know, A number has two values face value and place value,
Given, A decimal number 16.35.
Now, The digit 3 is one digit after the decimal,
So, It has a face value of 3 and a place value of 3×10⁻¹.
learn more about face value and place value here :
https://brainly.com/question/23719802
#SPJ2
Expand and simplify 7a + 4(a-2b)
Help please :)
Answer:
11a - 8b.
Step-by-step explanation:
7a + 4(a-2b)
= 7a + 4a - 8b
= 11a - 8b.
Write down two different prime numbers that have a sum of 34.
Answer:
23+11
Hope that helps :)
Answer:
31+3
Step-by-step explanation:
2,3,5,7,11,13,17,19,23,27,29,31
31+3=34
What is the standard form equation for a 1/2 line that passes though (-3,-3) and (4,2)
Answer:
y= 5/7x -2.7
Step-by-step explanation:
Y= mx + c (-3,-3) (4,2)
x1 , y1 x2, y2
to find m (gradient)
y^2 - y^1 / x^2 - x^1
2-(-3) / 4 - (-3)
5/7 m = 5/7
take (4,2) and gradient and substitute
2=5/7(4) + c
2=4.7+ c
2-4.7 = c
-2.7 = c
now we have c and m so just put it in the equation
y= 5/7x -2.7
Help me please!!!!
Write a simplified equation to solve for X.
Using the equation, solve for x
Answer:
X+X+100° = 180°
Step-by-step explanation:
X+X+100° = 180°
2X= 180°-100°
2X=80°
X=80/2
X=40°
ABCD is a trapezium
AD and BC are parallel
Work out the length of BD to 1 decimal place
Work out the length of CD to 1 decimal place
Answer:
a) 12.1
b) 15.1
Step-by-step explanation:
enter a letter.
Line ____ is a transversal.
Student tickets cost $5.75 each, and adult tickets cost $8.50 each.
Which equation can be used to find the total cost c of any number
of adult tickets t?
Answer:
c=8.5t
Hope this helps!
Rearrange to make subject x 4(x-3)/a=y
Answer:
answer is x = ay + 12/4
Step-by-step explanation:
first we cross multiply on both sides which will give us this
4( x -3)=ay
we then open the brackets by multiplying 4 with x and -3 which gives
4x - 12= ay
then take 12 to the other side
4x - 12+12= ay + 12
4x = ay + 12
divide 4 on both sides
4x /4= ay + 12/ 4
therefore x = ay + 12/ 4
clear steps in picture
hope that can help
What is the measure of
Answer:
<Ber=<kem(vertically opposite angle)
9x-17=3x+31
9x-3x=31+17
6x=48
x=48/6=8
<kem=3×8+31=55°is answer
Four months of the year have thirty days only. What fraction of the set
of months is this?
Answer:
4/30 or 4/120
Step-by-step explanation:
What is -9r+10r simplified?
-4(9r+10)+5(10r+7)
Multiply the first bracket by -4
Multiply the second bracket by 5
(-4)(9r)(-4)(10)
=-36r-40
(5)(10r)+(5)(7)
=-50r+35
-36r-40+50r+35
-36r+50r-40+35 ( rearranging)
14r-5
Answer: 14r-5
Answer:
This is really simple, the answer is 1r, or just r
Step-by-step explanation:
this can also be seen as 10r-9r
can anyone please answer this if you can i’m confused
Answer:
Ge I Joe 02 04 Soccer balls height
4x + 5 + 3x – 12 =
A.9x-9
B.7x+7
C.7x-7
Answer:
7x - 7
Step-by-step explanation:
In this equation you are going to add like terms.
The like terms you have are the terms with x and then the terms without the x.
So 4x + 3x = 7x
5 - 12 = -7
So your answer is 7x-7
(HELP FAST PLEASE)
Robert runs 2 1/3 laps in 4 1/3 minutes. At this rate how long will it take to run 3 laps?
Answer:
7
Step-by-step explanation:
This is easy. You simply see what 2 1/3 is of 3. The answer is 7.
Please make brainliest!
Answer:
[tex]5 \frac{7}{50}[/tex]
Step-by-step explanation:
we can write the following ratios
laps:time
2.333:4.3333
3:x
To solve this just multiply 4.333 by 1.28571428571 (this is what we mulitplied 2.333 by to get 3)
do this and round to get 5.14 minutes
let's convert this into a fraction just in case
5.14= 514/100 = 257/50 = 5 7/50