Percentages
Gunpowder contains 75% nitre and 10% sulfur. Find the amount of gunpowder which carries 9 kg nitre. What amount of gunpowder would contain 2.3 kg sulfur?
Answer:
Let the amount of gunpowder that contains 9 kg nitre be x kg. ∴ The amount of gunpowder containing 9 kg nitre is 12 kg.
So, about 200 kg gunpowder
Which property was used to simplify the expression?
3c+9+4c= 3c+4c+9
distributive property
commutative property
associative property
inverse property
You have a pizza with diameter 12
2
3 in., and a square box that is 12.65 in. across. Write 12
2
3 as a decimal. Can you fit the pizza inside the box?
What is the decimal expansion for 12
2
3?
A.12.6
B.12.65
C.12.6
D.12.66
pls help me
Answer:
D is the right choice and no you cannot fit the pizza inside the box.
Step-by-step explanation:
D is the answer because to turn 2/3 into a decimal you would divide 2 by 3 and the answer you would get would be 0.66666666666...You would then add 12 to the answer and get 12.6666... Once you get this answer you would round it to the hundredths to get 12.67 but since that is not an option you could use D, 12.66 inches.
Answer:
I believe the answer is D.
Step-by-step explanation:
Geraldo is going to buy a new fishing pole and bait before he meets up with his friends this afternoon. The fishing pole cost $15. The bait cost $2.75 per pound and is only sold in full pounds (you can't get half a pound.) If Geraldo has $30, how much bait can he buy?
Answer:
5 pounds
Step-by-step explanation:
Answer:
5 pounds
Step-by-step explanation:
We can use a inequality to answer this question: it will be
--- 2.75b + 15 < 30 (let b equal the bait)
subtract 15 on both sides
---- 2.75b < 15
divide 2.75 on both sides
---- b = 5.4.... (rounded)
Since you can't buy some of a pound, he can Geraldo can only buy 5 pounds of bait. Hope this helps.
help with the ones that are circled
can u post it but not as blurry i can answer if i can see it
Mackey invested some money in an account paying 6% interest for one year. She invested $1000 more than this amount in an account paying 8.5%. How much did she invest in total if the total interest earned in the year was $737.50?
Step-by-step explanation:
Let's assume the amount Mackey initially invested in the 6% account is x dollars.
According to the given information, Mackey invested $1000 more than x in the 8.5% account, which means she invested (x + $1000) dollars in that account.
The total interest earned from the 6% account would be 0.06x dollars, and the total interest earned from the 8.5% account would be 0.085(x + $1000) dollars.
The total interest earned in the year is given as $737.50, so we can set up the equation:
0.06x + 0.085(x + $1000) = $737.50
Simplifying the equation:
0.06x + 0.085x + 0.085($1000) = $737.50
Combining like terms:
0.145x + $85 = $737.50
Subtracting $85 from both sides:
0.145x = $737.50 - $85
0.145x = $652.50
Dividing both sides by 0.145:
x = $652.50 / 0.145
x ≈ $4500
Therefore, Mackey initially invested approximately $4500 in the 6% account, and she invested $1000 more, which means she invested a total of $5500.
$4500
$4500
$4500
$4500
pl z help ILL give BRIANLIEST I DOUBLED POINTS BECAUSE THEIR WAS TWO OF THEM
Answer: For the 1st one I think it's 12 but I don't know the other 1.
Hope this helps! ^^
Answer:
The Answer to the first question is 27 cubic millimeters.
Step-by-step explanation:
The original formula for volume is V= l×w×h
When you find the volume of a cube, use this formula; V=s^3.
V is for Volume.
s is for the measurement of the side.
3 is for the length, width, and height.
First, just plug the number in; V=3^3. Or 3×3×3.
Second, Multiply; V=27
Write -7 2/3 as an improper fraction.
A. -23/3
B. -21/3
C. -14/3
D. -19/3
Answer:
\(\textsf{A.} \quad -\dfrac{23}{3}\)
Step-by-step explanation:
Given mixed number:
\(-7 \frac{2}{3}\)
To convert a mixed number into an improper fraction, multiply the whole number by the denominator of the fraction and add it to the numerator of the fraction, then place the answer over the denominator:
\(\implies -\dfrac{7 \times 3+2}{3}=-\dfrac{21+2}{3}=-\dfrac{23}{3}\)
15 POINTS IF SOMEONE ANSWERS QUICK
Answer:
The 16 cases will fit the box as shown.
Step-by-step explanation:
One disk case has the dimensions 14.2 cm by 19.3 cm, with thickness 1.6 cm.
Temporarily ignoring the 14.2 cm and 19.3 cm measurements, we multiply this 1.6 cm thickness by 16, obtaining a total thickness for the stack of cases of 25.6 cm.
1) The 16 cases, arranged as shown, and measuring 25.6 cm from left to right in this diagram, will fit within the 26 cm horizontal distance shown.
2) The horizontal length of each case is 14.2 cm. Stacked as shown, the 16 cases will fit within the 15 cm depth of the box.
3) The vertical measurement of each case is 19.3 cm. The 20 cm vertical measurement of the box can accommodate this 19.3 height within 20 cm.
All indications are that the 16 cases will fit comfortably inside the box.
Answer:
16 discs capacity of the cuboid.
Step-by-step explanation:.
for simplicity...
i would just divide 26cm to 1.6cm = 16 .25
therefore, 16 discs capacity of the cuboid.
First-person to get this right with an Explanation gets Brainliest
What is the rate of change of the linear function that has a graph that passes through the points (1,15) and (-2,3)?
Answer:
4
Step-by-step explanation:
Please need help ASAP.
Answer: in this order angle d, e, f line de, ef, fd
Step-by-step explanation:
PLZ ANWSER ALL
Question 1(Multiple Choice Worth 4 points)
Monica purchased adult and youth tickets for the fair. She bought x adult tickets for $28 each and y youth tickets for $15. Write an expression that can be used to show the total cost, C, of all tickets.
C = (28 + 15)x
C = (28 + 15)(x + y)
C = 28x + 15y
C = 28y + 15x
Question 2(Multiple Choice Worth 4 points)
Jamie purchased a DVD that was on sale for 15% off. The sales tax in her county is 5%. Let y represent the original price of the DVD. Write an expression that can be used to determine the final cost of the DVD.
y − 0.15y
0.05(0.85y)
y − 0.85y + 0.05y
1.05(0.85y)
Question 3(Multiple Choice Worth 4 points)
Write an expression for the perimeter of the triangle shown below:
A triangle is shown with side lengths labeled 0.5x plus 9, 3x, and negative 3.4x minus 25.
6.9x − 16
6.9x + 16
0.1x − 16
0.1x + 16
Question 4(Multiple Choice Worth 4 points)
Which expression is equivalent to one over threep + 15?
one over three(p + 45)
one over three(p + 5)
3(p + 45)
3(p + 5)
Question 5(Multiple Choice Worth 4 points)
Write an expression that is equivalent to three over five (3y + 15).
3/5 y + 9
3/5 y + 15
9/5y + 9
9/5y + 15
Answer:
1. c=28x+15y
2. y-0.85y+0.05y
3. 6.9x-16 i think
4. 3(p+5)
5. 3/5 y + 15
Step-by-step explanation:
anyone got the answers for them?
Step-by-step explanation:
i'm a beginer too so i don't i have an answer for that buh what are u solving is it word problems
Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111
Here are the pairs matched with their products:
- (-5)(4.2) matches with -21
- (-7)(-3) matches with 21
- (2.5)(-9) matches with -22.5
Pairs (4) and (5) do not have corresponding products in the given options.
Is this right? I’m just checking my work but I need to submit this soon.
Yes i believe they are correct
(hope you get a 100% :))
For each given slope and y- intercept, complete the equation of the line. Then complete the ordered pairs that you would find on the graph of the line. (use decimal notation if necessary).
Answer: y= 1/5x+2 and 3/5x+3 and spmeyjonddhoiwejs
Step-by-step explanation:
The band wants to order T-shirts. The T-shirts cost $15 each plus a shipping fee of $10. Write an expression to find the total cost of c T-shirts.
Answer:
t(15)+10=c
Step-by-step explanation:
Which of the following describe an angle with a vertex at E?
Check all that apply.
The vertex of angle is the middle letter.
E is the vertex so the answers are:
A and C
Answer:
FED and DEF
Step-by-step explanation:
vertex is the middle letter
I have a hat that contains six nickels and five pennies. I draw coins from the hat at random, without replacement. Find the probability that after drawing four coins, I have removed at most two pennies from the hat.
PLEASE HELP
simplify each polynomial.
2x2 + 8 – 4x + 3x – 6x2 + 7
A. –8x2 – 7x + 15
B. –4x2 – x + 15
C. 4x2 + x + 15
D. 8x2 + 7x + 15
This is hard for me ;(
Answer: The Blue one lol
Step-by-step explanation:
blue because of soc method, which is shape outliers center ( median mode and middle)
A rectangular prism is 2 inches by 4 inches by 6 inches.
Kimaya says, “It takes more 2/5-inch cubes to fill the prism than 1/5-inch cubes.”
Do you agree with Kimaya? Explain or show your reasoning.
No, I do not agree with Kimaya. The volume of the rectangular prism is 2 inches x 4 inches x 6 inches = 48 cubic inches. To fill the rectangular prism with 2/5-inch cubes, you would need 48 cubic inches / (2/5) cubic inches per cube = 120 cubes. To fill the rectangular prism with 1/5-inch cubes, you would need 48 cubic inches / (1/5) cubic inches per cube = 240 cubes.
So, it takes less 2/5-inch cubes to fill the prism than 1/5-inch cubes.
Another way to think of it is that the larger the cubes, the less number of cubes you need to fill the same volume, as the cubes are larger in size.
What is the solution to this inequality?
−4x − 8 > −20
Question 7 options:
x > −3
x < −3
x > 3
x <3
Answer:
\(\boxed{\sf{D. \quad x < 3}}\)Step-by-step explanation:
It is necessary to isolate the term of x from one side of an inequality to find its solution.
-4x-8>-20First, add by 8 from both sides.
\(\sf{-4x-8+8 > -20+8}\)
Solve.
-20+8=-12
Rewrite the problem down.
\(\sf{-4x > -12}\)
Multiply by -1 from both sides.
(-4x)(-1)<(-12)(-1)
Solve.
Multiply the numbers from left to right.
(-12)(-1)=12
4x<12
Divide by 4 from both sides.
4x/4<12/4
Solve.
Divide the numbers from left to right.
12/4=3
x<3
Therefore, the correct answer is D. x<3 (last option).I hope this helps you! Let me know if my answer is wrong or not.
Answer:
Option D.
Why is this the case, though?These equations prove it true.
\(-4 * 2 - 8 = -16 > -20\)
\(-4 * 1 - 8 = -12 > -20\)
The only reason these two equations are correct, is because on the number line it shows: Any negative number further to the right than the last negative number is greater than that number.
Black dot is the main point, Blue dot is solution 1, and Red dot is solution 2
Graph the following in cartesian plane. With solution.
1.) 5x - 4y = 20
2.) 3x + 3y = 15
3.) y = 3/4x - 2
4.) y = -3/2x + 3
pls help me I need this pls, I only need the solution, thx
Step-by-step explanation:
1.) 5x-4y=20
y=5/4x-5
5x/4-5=0
x=4
2.) 3x+3y=15
y=-x+5
x+5=0
-x=-5
=x=5
3.) y=3/4x-2
3/4x-2=0
x=0
3x4x/4 -2 x4x-0x4x
3-2x4x=0x4x
3-8x=0
8x=-3
=x=3/8
4.) y=3/2x+3
3/2x+3=0
x=0x
3x2x/2+3x2x=0x2x
3+3x2x=0x2x
3+6x=0
6x=-3
x=_3/6
=x=-1/2
How many solutions does the following equation has?
5 ( i - 3) + 6 = 5i - 10
Answer:
3 is the answer!
Find d, the depth of the water
Answer:
d=27 ft
Step-by-step explanation:
U need use Thales's theorem:
height of smaller triangle (15)divide by side (40) is eaqul to height of bigger triangle (d) divide by side (72).
\(\frac{15}{40} =\frac{d}{72} \\40*d=15*72\\d=\frac{15*72}{40} \\d=27\)
Which expression is equivalent to -1/3 ( 6x + 15 ) - 3?
a) -2x + 12
b) -2x + 2
c) -2x - 2
d) -2x - 8
The correct answer is (D) -2x - 8.
To simplify the expression -1/3 ( 6x + 15 ) - 3, we can first apply the distributive property to the term in parentheses:
-1/3 ( 6x + 15 ) - 3 = -1/3 * 6x - 1/3 * 15 - 3
Then we can simplify using the properties of multiplication and division:
-1/3 * 6x - 1/3 * 15 - 3 = -2x - 5 - 3
Finally, we can combine like terms:
-2x - 5 - 3 = -2x - 8
The correct answer is therefore (D) -2x - 8.✅
Please help! I have been stuck for DAYS!!
PLEASE HELP ASAP!!!!! a simulation by tossing a coin to model whether these puppies will be male or female. • Let heads (H) = female puppy • Let tails (T) = male puppy The results of the simulation are: 1. TTTT 6. HHHH 2. TTTT 7.HTHT 3. THTH 8. HHHH 4. HTTT 9. THTH 5. TTTT 10. HHHH What is the estimated probability that at least two of the puppies will be male?
Answer:
7/10 or 70%
Step-by-step explanation:
There has to be at least two T in each result of the simulation. This means you can also have 3 T's and 4 T's in the result.
These are the results that qualify as having at least two T's.
1. TTTT, 2. TTTT, 3. THTH, 4. HTTT, 5. TTTT, 7. HTHT, 9. THTH
That is 7 out of the 10 results which is 7/10 or 70%
Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.
What is the mean number of minutes spent on the phone?
Explanation:
The data from the stem-and-leaf plot is:
10,
24,25,26,
30,30,32,33,
40,45,46
Add up those values
10+24+25+26+30+30+32+33+40+45+46 = 341
Then divide over n = 11 which is the sample size.
341/11 = 31 is the arithmetic mean.
Answer:
341/11 = 31 is the arithmetic mean.
Step-by-step explanation: