Answer:
1.78 min
Step-by-step explanation:
so first you have to figure out the fastest runner
pepe 12 miles in 4.5 minutes
and paula ran 34 miles in 7.5 minutes
if you divide miles by minutes you get how many miles they ran in one minute
12/4.5=~2.67
34/7.5=~4.53
So you can see that paula is faster
if she ran ~4.5 miles in a minute then it would take her ~1.78 minutes to run 8 miles
they're both super humans though like woah
2. 2 more than the four times a number r
Translate this to an expression
(11x + 2) + (9x -4) can someone help me plzz
Answer: if you are simplifying its 20x-2
Step-by-step explanation:
The kittens, Annie and Josie, are pushing a ball, Annie with a force magnitude of 80 N in a direction of 133 degrees, and Josie with a magnitude of 95 N in a direction of 290 degrees. If a third cat wants to prevent the ball from moving, with what magnitude and direction of force must she push?
Answer: Then the magnitude of the force is 37.86N, and the direction is 54.35°
Step-by-step explanation:
We can write the forces as vectors.
We know that Annie pushes with a magnitude of 80N in a direction of 133° (Remember that the angles are always measured from the x-axis)
The components of this force, (Ax, Ay), are then:
Ax = 80N*cos(133°)
Ay = 80N*sin(133°)
And we know that Josie pushes with a magnitude of 95N in direction of 290°
The components of this force, (Jx, Jy), are:
Jx = 95N*cos(290°)
Jy = 95N*sin(290°)
When we add these forces, the total force acting on the ball is:
F = (80N*cos(133°) , 80N*sin(133°)) + (95N*cos(290°), 95N*sin(290°))
F = (80N*cos(133°) + 95N*cos(290°), 80N*sin(133°) + 95N*sin(290°))
Now, the third kitten wants to do a force K, in a direction θ, such that the net force acting on the ball is zero.
Then we must have that, each component of the force of the third cat (K*cos(θ) on the x-axis and k*sin(θ) on the y-axis), is such that:
K*cos(θ) + 80N*cos(133°) + 95N*cos(290°) = 0
k*sin(θ) + 80N*sin(133°) + 95N*sin(290°) = 0
Now we need to solve that system for k and θ
if we simplify the equations we get:
k*cos(θ) - 22.07N = 0
k*sin(θ) -30.76N = 0
Now we can rewrite them as:
k*cos(θ) = 22.07N
k*sin(θ) = 30.76N
Now we can take the quotiet between both equations to get:
(k*sin(θ))/(k*cos(θ)) = 30.76N/22.07N
Tan(θ) = 1.394
θ = Atan(1.394) = 54.35°
Now that we know the angle, we can find the value of the magnitude k, by using one of the two equations of the system:
k*cos(54.35°) = 22.07N
k = 22.07N/cos(54.35°) = 37.86N
Then the magnitude of this force is 37.86N, and the direction is 54.35°
Is -351 in the sequence below 27,25,23,21,19
Answer:
Yes
Step-by-step explanation:
To find the next number in the sequence, you have to subtract 2 from the last number.Because it started on 27 (which is an odd number) and we're subtracting 2 each time, every number in the sequence will be odd. And because -351 is an odd number, it will be in the sequence.I hope this helps!
PLEASE HELP! A chemist is estimating the volume of a solution in a test tube. The actual volume of the solution is 33.4 ml. The chemist's estimate is 35 ml.
Find the absolute error and the percent error of the chemist's estimate. If necessary, round your answers to the nearest tenth.
Absolute error is actual- estimate=33.4-35=-1.6 that in percent can be found using a rule of three, we say that 33.4 is the 100% and we find the % for -1.6
33.4ml -------- 100%
-1.8ml-----------x
x=(-1.8)(100)/33.4
x=-5.4
the percentage error is -5.4%
Given the function y=2x and the domain (-1, 0, 1, 2), the corresponding range is (-2,
0.2, 6).
True
False
Which pairs of angles in the figure below are vertical angles?
Check all that apply.
Answer:
A
Step-by-step explanation:
the answer is vertical angles are angles that are opposite from each other
any help
please
thanks
Answer:
n=54
Step-by-step explanation:
Since this is a proportion problem, you have cross mulitply.
7n=9x42
7n=378
n=54
Answer:
cross multiply
9×42=378
7×n=7n
n=378/7
n=54
Please find the length x.
The length of the triangle ABC is given by the equation x = 5
What are similar triangles?If two triangles' corresponding angles are congruent and their corresponding sides are proportional, they are said to be similar triangles. In other words, similar triangles have the same shape but may or may not be the same size. The triangles are congruent if their corresponding sides are also of identical length.
Corresponding sides of similar triangles are in the same ratio. The ratio of area of similar triangles is the same as the ratio of the square of any pair of their corresponding sides
Given data ,
Let the first triangle be represented as ABC
Let the second triangle be represented as CDE
The measure of side AB = 2.5
The measure of side AC = x
The measure of side CE = 7
The measure of side ED = 3.5
Now , the two triangles are similar
So , corresponding sides of similar triangles are in the same ratio
Substituting the values in the equation , we get
AC / AB = CE / ED
On simplifying the equation , we get
x / 2.5 = 7 / 3.5
Multiply by 2.5 on both sides of the equation , we get
x = ( 2.5 x 7 ) / 3.5
x = 2.5 x 2
x = 5
Therefore , the value of x is 5
Hence , the measure of side x = 5
To learn more about similar triangles click :
https://brainly.com/question/29378183
#SPJ2
Do all of them for cookie idek
Step-by-step explanation:
slope.
1.2x
2.-x
3.1/4x
4.6x
5.3/4x
y intercept:
1.4
2.-2
3.1
4.12
5.1/2
simplifly the expression 2(x - 5)
Answer:
2x - 10
Step-by-step explanation:
2(x - 5)
distribute
2*x - 2*5
2x - 2*5
2x - 10
The blue dot is at what value on the number line?
12
8
Answer:
20
Step-by-step explanation:
Find the slope of the line passing through the points (3,9) and 12,-5)
Answer:
9/-24 or ~ -0.38
Step-by-step explanation:
x y
3 9
12 -15
from 9 to -15 it will be subtracting 24
From 3 to 12 it will be adding 9
y/x = 9/-24 or -0.375 ~ -0.38
Somebody please help me :(
6 is _______________ % of 30. fill in the blank
Answer:
6 is 20% of 30
Step-by-step explanation:
6 × 5 = 30
take one of the five parts and you get 20% of the full product
which is the correct answer?
(Note): (If you give a silly or absurd answer I will report you)
Answer:
lolooollollolololo-
jk
The answer is
J) 334.06
Step-by-step explanation:
We know the rate is 1.5 inch an hour
So 1.5*2.54 is 3.81
Now 3.81 cm every hour
24 hours a day
3.81*24=91.44
Now 91.44 cm A day
1 Year or 365 days
91.44*365= 33375.6cm a year
now we also need to add the extra 12 inches in the beginning
12*2.54=30.48cm
Now add those 2
33375.6+30.48= 33406.08
now the answer asked for meters so we divide 33406.09/100
you’ll get 334.06 or J
J) 334.06
This is your answer
write a story to represent the equation 1/2÷3 solve the equation and complete the story
Answer: ↓↓
Step-by-step explanation:
Fred, Ben, and George bought a pizza. George's sister and her friends ate some of the pizza, they left 1/2 of the whole pizza. Fred decided that they should share the remaining pizza equally. How much of the pizza will they each get?
1/2 ÷ 3 = 1/6
The three boys will each get 1/6 of the pizza.
Hope this is good! :3
Can anyone help me with this?
Answer:
D. -6m²n² + 10m²n + 8mn² - 10mn
Step-by-step explanation:
(-7mn + 8mn² - 8m²n²) + (10m²n + 2m²n² - 3mn)
Apply the distributive property to remove the parentheses
-7mn + 8mn² - 8m²n² + 10m²n + 2m²n² - 3mn
Combine like terms together and arrange in standard form
-7mn + 8mn² - 8m²n² + 10m²n + 2m²n² - 3mn
-8m²n² + 2m²n² + 10m²n + 8mn² - 7mn - 3mn
-6m²n² + 10m²n + 8mn² - 10mn
What is the x-intercept of the graph that is shown below?
Answer:
(-2, 0)
Step-by-step explanation:
The x-intercept is where the line meets the x-axis, so that is (-2, 0).
Answer:
(-2,0)
Step-by-step explanation:
i hope it's helpful
8. Simon is saving his money to buy an Xbox. He earn money by mowing lowns for his
neighbors. The situation can be represented using the equation 35x - 2y = -42 where x
represents the number of lawns mowed and y represents the amount of money Simon has in his
bank account.
( explainations are muc appreciated:) )
a. How much money does Simon earn for mowing each lawn?
b. How much money was in Simon's bank account before mowing any lawns?
Answer:
a. $35
b.$21
Step-by-step explanation:
a. It is what your are multiplying the number of lawns mowed by
b. -2y = -42
divide by -2 on each side
y=21
(you don't need the 35x because we are trying to find how much before he started mowing)
Question 7
1 pts
8. Tianna worked 45 hours last week. Her employer pays time and a half for hours over 40. Her gross pay was $451.25. What is her
hourly rate?
Answer:
$9.50
Step-by-step explanation:
40x + (5*1.5*x) = 451.25
40x + 7.5x = 451.25
47.5x = 451.25
x = 9.50
Is -4 a integer and a whole number pleaseeeeeeee
Answer:
-4 is an integer however NOT a whole number.
Step-by-step explanation:
Integer include numbers that can be written as a fraction(whole number) and their negative selfs. So: 1,2,3,4... and -1,-2,-3,-4...
Whole numbers are numbers that can be written as a fraction but do not include negative, so any number like: 1,2,3,4... but it can't be negative.
Ace
Write an equation to represent the number of pages Jesse has read. Using x, the number of days Amir has been reading, write an expression to represent the number of days Jesse has been reading. Remember that Jesse started reading one day before Amir. Use this expression to write an equation for the number of pages Jesse has read. Let y represent the number of pages read.
Question:
Jesse and Amir were assigned the same book to read. Jesse started reading on Saturday, and he is reading 30 pages a day. Amir didn't start until Sunday, but he is reading 35 pages a day.
How many days will it take Amir to catch up to Jesse, and how many pages will they each have read?
Write an equation to represent the number of pages Amir has read. Use x to represent the number of days Amir has been reading and y to represent the number of pages he has read.
Answer:
It will take 6 days
Step-by-step explanation:
For Jesse:
[tex]Rate = 30\ pages/day[/tex]
This implies that Jesse will cover 30y in y days
For Amir:
[tex]Rate = 35\ pages/day[/tex]
This implies that Amir will cover 35x in x days
Because Amir starts a day later,
[tex]y = x + 1[/tex]
So, we have the following equations:
[tex]Jesse = 30y[/tex]
[tex]Amir= 35x[/tex]
[tex]y = x + 1[/tex]
To get the number of days when they read the same number of pages, we have:
[tex]Jesse = Amir[/tex]
Substitute values for Jesse and Amir
[tex]30y = 35x[/tex]
Substitute x + 1 for y
[tex]30(x+1) = 35x[/tex]
Open bracket
[tex]30x+30 = 35x[/tex]
Collect Like Terms
[tex]30 = 35x-30x[/tex]
[tex]30 = 5x[/tex]
Solve for x
[tex]\frac{30}{5} = \frac{5x}{5}[/tex]
[tex]\frac{30}{5} = x[/tex]
[tex]6 = x[/tex]
[tex]x = 6[/tex]
Which expression can be used to find the price of a 400$ telescope after a 32% markup?
A. 400 x 0.32
B. 400 x 3.2
C. 400 x 1.32
D 400 + 400 (0.32)
E. 400 x 400(1.32)
Answer:
A
Step-by-step explanation:
A because a markup means the price times the number given which was 32% and 32% is the same as 0.32.
A TV has an original price of $599. Enter the new price after the given percent of change.
20% increase
The percent decrease is ? %
Answer:
The new price = $718. 8
Step-by-step explanation:
Original Price = $599
Given that the increase is 20%.
i.e.
Thus,
The amount of 20% Percentage increase = 20/100 × 599
= 0.2 × 599
= $119.8
Therefore,
New price = Original price + 20% increase amount
= 599 + 119.8
= $718. 8
Therefore, the new price = $718. 8
find the slope of the line
Answer:
y= 3 + 3/4x sooooooo 3/4 is the slope... I think
Answer:
3/4
Step-by-step explanation:
You can use the x- and y--intercepts since they are easy-to-read points.
x-intercept: (-4, 0)
y-intercept: (0, 3)
To go from (-4, 0) to (0, 3), go up 3 and right 4. That is a rise of 3 and a run of 4.
slope = rise/run = 3/4
Answer: slope = 3/4
find x !!?????!!!????????????
Answer:
x = 15
Step-by-step explanation:
Given
See attachment
Required
Find x
The figure in the attachment is a quadrilateral and the angles in a quadrilateral add up to 360.
So, we have:
90 + 6x + 5+ 10x - 40 + 4x + 5 = 360
Collect like terms
6x + 10x + 4x = 360 - 90 - 5 + 40 - 5
20x = 300
Divide both sides by 20
x = 15
Hence, the value of x is 15
What part of the story does this portion of the graph represent?
Answer:
Step-by-step explanation:
Area of the Velocity-Time graph gives the displacement of the motion .
Haley worked 287 hours during the summer and earned $16 for each hour she worked.
Which is the closest estimate for the total amount she earned?
$4,500
$5,000
$5,500
$6,000
Answer: The closest estimate for the total amount she earned = $4,500
Step-by-step explanation:
Given: Total hours worked = 287 hours
Earning for each hour = $16
Total earning = (Total hours worked ) x (Earning for each hour)
= $ (287 x 16)
= $ 4592 ≈ $4500
The closest estimate for the total amount she earned = $4500
The price of shares of Nadir Explorations Ltd. fell by 76% in the past year, to the current price of $0.45 per share. In dollars and cents, how much did the price of each share drop in the past year?
Answer:
$0.342 ; 34.2 cents
Step-by-step explanation:
Given that:
Share price fell by 76% in past year :
current price per share = $0.45
Drop in price of share in past year :
76% of current price
0.76 * $0.45
= $0.342
Price dropped by $0.342 per share
In cent, 0.342 * 100 = 34.2 cents