Answer:
280 ml as a percentage of 140 l is 0.2%
Step-by-step explanation:
Note that 1 liter = 1000 millilitersTo find a percentage of a number divide the number by the total and multiply the quotient by 100%∵ There is an amount of 280 ml
∵ The total amount is 140 l
→ Change the liter to milliliters using the 1st point above
∴ 140 l = 140 × 1000 = 140000 ml
∴ 140 l = 140,000 ml
→ Now divide the amount by the total, then multiply the quotient by 100%
∵ 280 ÷ 140,000 = [tex]\frac{1}{500}[/tex]
∵ [tex]\frac{1}{500}[/tex] × 100% = 0.2%
∴ 280 ml as a percentage of 140 l is 0.2%
Find the final sale price after these two discounts: Original price $65.00. Take 20% off, and then take $5 off that amount.
Answer:
20% 0f $65.00 is $13
$13 - $5= $8
Step-by-step explanation:
Percentage solution with steps:
Step 1: Our output value is 65.00.
Step 2: We represent the unknown value with $x$.
Step 3: From step 1 above,$65.00=100\%$.
Step 4: Similarly, $x=20\%$.
Step 5: This results in a pair of simple equations:
$65.00=100\%(1)$.
$x=20\%(2)$.
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
$\frac{65.00}{x}=\frac{100\%}{20\%}$
Step 7: Again, the reciprocal of both sides gives
$\frac{x}{65.00}=\frac{20}{100}$
$\Rightarrow x=13$
Therefore, $20\%$ of $65.00$ is $13$
I'll give 15 points for this question
Answer:
4. Is 6 eggs
5. Is 7 eggs
Step-by-step explanation:
The table below shows the amounts of lemon juice and sugar used in each container of lemonade. The ratio of lemon juice to sugar is 1:r, where r is the unit rate. Use the table to determine r.
Lemon Juice (cup) Sugar (cup)
1/2 1
2 4
3 6
A. 2
B. 1/2
C.1
D. 2/3
Answer:
i believe the answer would be C! sorry if im wrong! ;-; <333
What is -6x-4+(2x+-8
Answer:
-4x+4
Step-by-step explanation:
write an equation of the line that passes through each pair of points (0,7) and (0,-8)
Explanation:
Both points have the same x coordinate x = 0, so this is the equation of the vertical line. It cannot be written in y = mx+b form because the slope m is undefined.
Consider the division expression 7 1/2 divided by 2. Select all multiplication equations that correspond to this division expression. 2 * ? = 7 1/2 7 1/2 * ? = 2 2 * 7 1/2 = ? ? * 7 1/2 = 2 ? * 2 = 7 1/2 I need help with this question!!! Which one is the answer!!!
Answer:
2 * ? = [tex]7\frac{1}{2}[/tex]
OR
? * 2 = [tex]7\frac{1}{2}[/tex]
Step-by-step explanation:
The given expression is:
[tex]7\frac{1}{2}[/tex] divided by 2.
The given expression a mixed fraction.
Let the result of the expression be equal to [tex]x[/tex].
Therefore, the expression can be written as:
[tex]7\frac{1}{2} \div 2 = x[/tex] ...... (1)
Multiplying equation (1) by 2:
[tex]7\frac{1}{2} = 2 \times x[/tex]
OR
[tex]7\frac{1}{2} = x \times 2[/tex]
Alternatively, this expression can be written as:
2 * ? = [tex]7\frac{1}{2}[/tex]
OR
? * 2 = [tex]7\frac{1}{2}[/tex]
Therefore, the following multiplication equations corresponding to equation (1) are:
2 * ? = [tex]7\frac{1}{2}[/tex]
OR
? * 2 = [tex]7\frac{1}{2}[/tex]
A paper airplane was thrown from the top of a tall building. The height of the paper airplane above the ground can be found using the function y = –3.5x + 42, where x is the time in seconds the airplane has been in the air.
How many seconds did it take the paper airplane to reach the ground?
Answer:
it took the airplane 12 seconds to reach the ground
Step-by-step explanation:
a) Compute the measures of center for both the boys and girls data. Describe their
differences. Use the terms mean and median to justify your answer. (3 points)
Answer: The girls median is 50, and their mean is 46
The boys median is 33, while their mean is 34.
The mean is the average, and the median is the middle when they are sorted by least to greatest.
Step-by-step explanation:
HELP PLEASE!
Find the equation of the line.
Use exact numbers.
y=___x+____
Answer:
slope: 3
y-intercept: 3
Step-by-step explanation:
y=3x+3
Hope this helps :) Have a good day!!!!
pls help fast
simply the complex fraction
Answer:
10/11
Step-by-step explanation:
(8/11)/(4/5)
= (8/11) x (5/4)
= 40/44
= 10/11
Answer: 10/11
Step-by-step explanation: multiply by the reciprocal of the divisor (8/11*5/4). you can reduce the fraction, so we can make it 2/11*5/1. just multiply, and you have your answer.
Please helppppp. Thank you
Answer:
[tex]x \geq -42[/tex]
Step-by-step explanation:
[tex]3 - \frac{x}{2} \leq 18[/tex]
subtract 3
[tex]- \frac{x}{2} \leq 15[/tex]
multiply by two
[tex]-x \leq 30[/tex]
devide by -1 and flip the sign
[tex]x \geq -30[/tex]
25 points plus brainliest
Both the race cars will hit the ground at the same time.
The concept used here is free fall formula which can be defined as . Free fall means that an object is falling freely without a forces acting upon it except gravity, a described constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1\/2 gravity x the square of the time falling. Velocity is described as gravity x time.
Here the two cars are free falling in the vertical direction and the initial velocity in the vertical direction is zero. So the landing time of both the cars is only related to the height and the acceleration of gravity.
Hence, the cars are falling from the same height, h and g are the same so they take same time to touch the ground.
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rationalise the denoninator of 1 ÷ 5 - square root of 2
Answer:
Square root2 /3
Step-by-step explanation:
1. Multiply both numerator and denominator by square root of 2.
2. Square root 2 times itself is just 2 that so denominator is 5-2
3. 1 times Square root 2 is just Square root 2. So numerator is Square root 2
4. 5-2=3 so final answer is Square root 2 over 3
simply 4x²y(x³y⁶-7x⁵)
Answer:
Step-by-step explanation:
Answer:
4x^5y^7 − 28x^7y
Step-by-step explanation:
yes
Steve worked 7 hours Monday, 5 3⁄4 hours on Tuesday and 3.2 hours on Friday. If Steve earns $8.50 per hour, how much money did he earn for these three days?
Please, show your work !! I’ll give you brain if you do !!
Answer:
135.58 i'm pretty sure.
Step-by-step explanation:
First, I calculated the amount of money he got on Monday. I multiplied. 8.50 x 7 which equals 59.50. Then, I calculated the amount of money he got on Tuesday. I multiplied 8.50 (since that is the number of money he gets paid) to 3.2 (since that's the amount of hours he works). I got 27.200. Then lastly, I calculated the amount of money he got on Friday. So I first I changed 5 3/4 into a decimal. This is 5.75. After, I multiplied 8.50 x 5.75, And got 48.8750. Lastly, I added. I added and got 135.575. So if you round it, it will be 135.58.
Simplify 12+(-8)+(-5)
Answer: -1
Step-by-step explanation:
12+(-8)+(-5)
4+(-5)
= -1
30 POINTS! Need steps too !! Really small word problem
Step-by-step explanation:
—Math(zw)² – 2 (z/w)^(-1 )= z²w² – 2 w/z
w²z³ – 2w
= —————
z
w (z³w – 2)
= ——————
z
Follow my account^^
If you flip a fair coin 7 times, what is the probability that you will get exactly 4 tails?
Answer:
u should have another number in here
Step-by-step explanation:
what is this pls help me ____?_____- $1,489= $5,237.
Answer:
6,726
Step-by-step explanation:
Go backwards.
5,237 + 1,489 = 6,726
Just add and you'll get the answer. Brainliest Please!!
- Hermionia
The graphs of y= ‐4x and y= ‐4x+2 are shown. Use the drop-down menus to complete the statements.
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
The cost, Y (in dollars) to provide for guests at a dinner party is proportional to the number x of guests attending the party. It costs 30 dollars to provide food for 4 guests.
Maybe you missed to add the complete question. After a little research I was able to find the complete question which is as follows:
''The cost y(in dollars) to provide food for guests at a dinner party is proportional to the number x of guests attending the party. It costs $30 to provide food for 4 guests. a. Write an equation that represents the situation. b. Interpret the slope. c. How much does it cost to provide food for 10 guests?''
So, I am solving based on this complete question.
Answer:
Please check the explanation.
Step-by-step explanation:
a. Write an equation that represents the situation.
As the cost and the number of guests are proportional.
So the equation of the form
[tex]y = mx[/tex]
Plug in the values y = 30 and x = 4 to find m
[tex]y = mx[/tex]
30 = m (4)
m = 30/4
= 7.5
Now, substituting m = 7.5 in the equation y=mx
[tex]y = mx[/tex]
[tex]y = 7.5x[/tex]
b) Interpreting Slope
Given that the units for y are dollars, and the units for x are guests.
Thus, the slope 7.5 means it costs $7.5 per guest.
c) How much does it cost to provide food for 10 guests?''
We know the equation
[tex]y = 7.5x[/tex]
put x = 10
y = 7.5(10)
y = $75
Thus, it costs 75 dollars for 10 guests.
Pls Help Me Find Rate of change
X Y
9 8
11 10
4 5
7 8
8 9
How many pounds are in 3000 ounces?
Answer:
187.5 pounds are in 3000 ounces
Step-by-step explanation:
The answer will be 187.5 pounds
Here is an isosceles triangle.
Choose the true statements.
A. The triangle has two equal angles.
B. The triangle has an obtuse angle.
C. Two of the sides are the same length.
Jake is making bracelets to give to his sisters. He uses 4 rainbow charms and 8 white star charms for his younger sister's bracelet. He makes his older sister's bracelet a little bigger, so he uses 5 rainbow charms and 10 white star charms. Does Jake use the same ratio of rainbow charms to white star charms in both bracelets?
Answer: Yes.
Step-by-step explanation: 4:8 simplifies to 1:2, since he used half as many rainbow charms as he did white stars. 5:10 also simplifies to 1:2. If they both have half as many rainbow charms as white, then both of his sister’s bracelets keep the same ratio.
Science question help
Answer: the first one.
Step-by-step explanation:
is the height of 6 and the volume of 96 proportional to the height of 4 and the volume of 64
Answer:
yes it is and there has to be 20 characters so gonna type random stuff after
Answer:
16
Step-by-step explanation:
64 divided by 4 = 16 and 96 divided 6 = 16
What is m ZABC?
c=67 d=60
mABC = 60°
mABC = 67 °
mABC = 120°
mABC = 127°
Answer:
m∠ABC = 127°Step-by-step explanation:
From triangle BCD:
m∠BCD + m∠CDB + m∠DBC = 180°
67° + 60° + m∠DBC = 180°
m∠DBC = 180° - 127°
An angle ABD is straight angle, so:
m∠ABC + m∠DBC = 180°
m∠ABC + 180° - 127° = 180°
m∠ABC = 127°
Find the next 3 terms in the arithmetic sequence: -10, -14, -18, -22....
a weight is attached to the end of a spring. its height after ttt seconds is given by the equation \qquad h(t)
The weight, according to the supplied statement, reaches its greatest height at 4.25 seconds.
When is the maximum height?This time is determined by the projectile's starting velocity as well as the angle of projection. When the projectile reaches a vertical velocity equal zero magnitudes, it has reached its maximum height. Furthermore, gravity would take over and accelerate the thing downward.
According to the given data:Given that,
y = -2sin[tex](\frac{2\pi (t+1)}{7})[/tex] + 5
For maximum height,
sin(2π(t + 1))/7) = -1
(2π(t + 1))/7) = sin⁻¹ (- 1)
(2π(t + 1))/7) = sin⁻¹ (- 1)
(2π(t + 1))/7) = 3π/2
t + 1 = 21/4
t = 4.25 seconds
Hence,
we can conclude that at t = 4.25 seconds,
The weight, according to the supplied statement, reaches its greatest height at 4.25 seconds.
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I understand that the question you are looking for is:
A weight is attached to the end of a spring. Its height after t seconds is given by the equation. -2sin(2pi(t+1)/7)+5 When does the weight first reach its maximum height? Answer in t seconds.