A coin contains 9 99 grams of nickel and 16 1616 grams of copper, for a total weight of 25 2525 grams
Answer:
64%
Step-by-step explanation:
A coin contains 9 grams of nickel and 16 grams of copper for a total weight of 25 grams.
What percentage of the metal in the coin is copper
Solution:
The total weight of the coin = weight of copper in coin + weight of nickel in coin
The total weight of the coin = 9 g + 16 g = 25 g
The percentage of copper in the coin is the ratio of the weight of copper in the coin to the total weight of the coin expressed in percentage. It is given by the formula:
The percentage of copper in the coin = (weight of copper in the coin / total weight of the coin) * 100%
The percentage of copper in the coin = (16 g / 25 g) * 100% = 64%
If an airplane boards 16 people every 3 minutes how long would it take to board all 150 passengers
Answer:
28 or 29 minutes
Step-by-step explanation:
multiply 150 and 3 then divide by 16 which gives you 28.12 but I guess you can round it to 28 or 29
Answer:
28 or 29 minutes u choose
Step-by-step explanation:
16 x 9 = 144 for 27 minutes
16 x 10= 160 for 30 minutes
I'd go with 28
Ms. Johnson owns a cabinet business that installs cabinets in kitchens. Her employees can install 2/3 of a
kitchen cabinet set in 1/5 of an hour.
How many kitchen cabinet sets can be installed by her workers in 1 hour?
Express your answer as an improper fraction
Answer:
10/3 of a kitchen cabinet
Step-by-step explanation:
To make a full hour, 1/5 would be multiplied by 5- and so would their progress.
2/3 * 5 = 10/3, which is also an improper fraction.
Write the recursive formula for the arithmetic sequence below.
5, 3, 1, −1, …
The ratio of men to women working for a company is 5 to 4. If there are 261 employees total, how many men work for the company?
Answer:
There would be 145 men employees.
Step-by-step explanation:
5/9=x/261
9x=1305
x=145
1.
Write down the equation of a line which has a slope of 5 and crosses the y-axis at 8.
Give your answer in slope-intercept form.
PLSS HELP ME IN MATH!!!!
Answer:
2.7 x [tex]10^{-11}[/tex]
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10 . The sign of the exponent will depend on the direction you are moving the decimal.
What is the total surface area of the triangular prism? Select one:
O 60m²
O 30m²
O75m²
O 63m²
765 divided by 11 is???
Answer:
mixed number 69/6/11
decimal form:69.54
exact form 765/11
research:69.5454545455
Step-by-step explanation:
Hope this helped!
Answer:
the answer is 69.5454545455
Step-by-step explanation:
Which statement is true about the regular octagon?
O A is the point of symmetry.
| 0 The regular octagon does not have Aoint symmetry.
The regular octagon will map point A onto point E
when rotated about point P 180°
O The regular octagon will map point C onto point E
when rotated about point P 180°.
Answer:
The answer is C
Also add me on snap Bubbafrederick
Step-by-step explanation:
Trevon and Riggs are brothers.
Trevon is 7 years older than Riggs.
Their combined age is 49.
How old is Trevon
Answer:
Trevon is 28 years old
Step-by-step explanation:
Riggs =x
Trevon =7+x
7+x+x=49
7+2x=49
2x=49-7
2x=42
x=21
Trevon is 21+7= 28 years old
Negative angles are measured in which direction from standard position?
The negative angles are measured in a clockwise direction.
What are angles?When two straight lines or rays intersect at a single endpoint, an angle is created. The vertex of an angle is the point at which two points come into contact.
An angle can be measured in either direction clockwise or anticlockwise.
The angle measured in the anticlockwise direction is considered a positive angle while the angles measured in the clockwise direction are considered to be negative angles.
Hence, the negative angles are measured in the clockwise direction.
Learn more about angles:
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Find each difference.
(-6s2 + 12s – 8) – (352 + 85 – 6) =
-952 + 45 – 14
_952 + 45 - 2
_952 + 20s – 14
O_952 + 20s - 2
DONE
Fracesca is growing 1/2 inch each year. How many years will it take her to grow 6 inches?
Divide. -24 divided by 7 Enter your question as a mixed number, in simplified form, in the box. Please hurry! Thank you :D
Answer:
-3 1/7
Step-by-step explanation:
The required simplified mixed number of -24 divided by 7 is -3 3/7.
To divide -24 by 7, the result is a mixed number in simplified form.
Divide -24 by 7:
-24 ÷ 7 = -3.428571...
Simplify the result as a mixed number:
To write the mixed number, we take the whole number part, which is -3, and the fractional part, which is the remainder after dividing.
The remainder is approximately 0.428571... (it goes on infinitely), but we'll round it to the nearest fraction for simplicity.
Approximately, 0.428571... is closest to 3/7.
So, the simplified mixed number is -3 3/7.
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will give brainly if correct (hs gemotry)
Scarlett has a 12 foot ladder that she is using so she can clean the gutters on her house. If she leans it against the house, making an 80 degree angle with the ground, how high up the house does it reach?
Scarlet is leaning a 12 foot ladder. When you lean a 12 foot ladder, it is s slanted so we will make 12 our slanted side or hypotenuse. It makes a 80 degree angle after contact with the ground so it will be on the lowest angle on the right. We are asked to find the vertical side or how high up the ground is. We are asked to a angle that is opposite of the given angle which is x .. And we are also given the hypotenuse. We are going to use sin using our SOHCAHTOA
[tex] \sin(theta) = \frac{opposite}{hypotunese} [/tex]
Where there is our given angle.
Let plug it in
[tex] \sin(80) = \frac{x}{12} [/tex]
Multiply 12 by both sides and we get
[tex] \sin(80) \times 12 = x[/tex]
Which about 11.8 if rounded to nearest tenth or 11.82 if rounded to nearest hundredth.
IF ROUNDED TO NEAREST TENTH, 11.8
IF ROUNDED TO NEAREST HUNDRETH, 11.82
True or False
4x + 2y - x = 3x + 2y
Answer:
False
Step-by-step explanation:
If y = - 3x + 5, what is y when
X=2/3?
Select one:
7
-1
3
11
Answer:
y = 3 may I please get brainliest?
Step-by-step explanation:
y= -3x+5
y= -3(2/3)+5
-3(2/3) = -2
y= -2+5
-2+5 = 3
y=3
similar polygons are ________________ the same shape
always
sometimes
never
Answer:
Always
Step-by-step explanation:
Similar figures are always the same shape, but not always the same size. If they have they same size, then they are also congruent.
y=x²+2x–5
vertex form
Answer:
y=(x+1)^2-6
Step-by-step explanation:
Four cans of beans cost $2.84.
Which process can be used to
determine the cost of 10 cans of
beans?
Answer:
Step-by-step explanation:
First box
Answer:
it's the first answer choice
Step-by-step explanation:
Two garden hoses are filling a kiddie pool together. Together they can fill the pool in 12 minutes. If used separately, one hose can fill the pool 10 minutes faster (not 10 times) than the other. How long does each hose take by itself to fill the pool?
Hint: 10 minutes more is x+10.
PLEASE ANSWER NEED URGENT
Answer:
Step-by-step explanation:
if the faster hose is ten minutes faster and both together only takes 12 minutes then the secound one by it self should take 22 mins. i think im not sure tho
Identify the base and exponent of b3
Answer:
The base is b3 I am pretty sure and the exponent is 1. Since there is no exponent I would say 1 as my exponent please wait for more answers if needed.
For which equation is x = 1 a solution?
A 4 - x = 1
B 4x = 1
C X divided by 3 = 4
D X/4 = 1
The length of the tunnel is 460 miles. If 1 inch represents 60 miles, what is the length of the scale drawing of the tunnel? Round to the nearest hundredths. Be sure to include units.
Answer:
7.66 inches
Step-by-step explanation:
In order to find the answer, you need to first find the ratio of miles to inches. You would do this by doing 460/60. In result you would have 7.66.
ik this isnt mathematics but heres my question.
6. A girl is riding her skateboard down a hill. She speeds up as she goes down the hill, and the wheels get a little warmer. Saved to this PC What energy transformations happen while she is going down the hill?
A. Motion energy (kinetic energy) is transformed into gravitational potential energy an thermal energy
B. Gravitational potential energy is transformed into motion energy (kinetic energy) and thermal energy. C. Gravitational potential energy is transformed only into motion energy (klnetic energy).
D. No energy transformations are involved while she is going down the hi D
Answer:
B
Explanation:
the wheels are getting warmer so it would have to be thermal energy, hope this helps :)
Gravitational potential energy is transformed into motion energy ,kinetic energy and thermal energy.
We know that Gravitational potential energy is the potential energy with respect to the gravitational force. To possess gravitational potential energy, the object to be placed in a position in the gravitational field.
What is potential energy?Potential energy of body is the energy generated by virtue of the position of the body. Whereas kinetic energy is generated by virtue of its movement.
Potential energy and kinetic energy together called as mechanical energy. The potential energy is mathematically expressed as;
p = mgh.
Here, g s gravity, h is height and m is the mass.
The gravitational potential energy can be arised in an object due the position in gravitational field. That changes with the change in position and change in height from the ground.
Hence Gravitational potential energy is transformed into motion energy (kinetic energy) and thermal energy.
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NEED HELP NOW PLEASE
Answer:
C: Termal energy is added
Step-by-step explanation:
thermal energy is what makes ice turn into water and water turn into gas
4E. There is an ample supply of identical blocks (as shown). Each block is constructed from four 1 × 1 × 1 unit-cubes glued whole-face to whole-face. What is the greatest number of such blocks that can be packed into a box that is 6 units tall, 7 units wide, and 8 units deep without exceeding the height of the box?
Answer:
72
Step-by-step explanation:
sdsa
Answer:
72
Step-by-step explanation:
The answer can also be 80 and 84.
Make sure to check the final answer!
Answer:
k = 33
Step-by-step explanation:
33 ÷ -11 = -3
SIMPLE DIVISION lol
Answer:
K=33
Step-by-step explanation:
The objective in this equation is to isolate the unknown variable, or k.
So our first step is to get rid of -11.
To do this, we need to multiply both sides by -11.
K/-11*-11=-3*-11
K=33
Hope this helps!
Write an equation of the perpendicular bisector of the segment with endpoints M(1,5) and N(7,−1).
Answer:
Step-by-step explanation:
find the perpendicular bisector of a line segment with endpoints
(ii) Find a point on the perpendicular bisector (the midpoint of the given line segment) using the midpoint formula:
( x 3 , y 3 ) = ( x 1 + x 2 2 , y 1 + y 2 2 )