Answer:
3 : 1
Step-by-step explanation:
The ratio of coins is ...
1 2/5 : 2 1/3 = 7/5 : 7/3 = 3 : 5
The quarters have 5 times the dollar value of nickels, so the ratio of dollar values is ...
5(3) : 5 = 3 : 1
The quarters have 3 times the dollar value of the nickels.
__
Additional comment
The number of nickels is 5/3 times the number of quarters, so is 5/3(24) = 40.
The dollar value of the quarters is 24($0.25) = $6.
The dollar value of the nickels is 40($0.05) = $2.
As above, the ratio of dollar values is 6:2 = 3 : 1.
__
There are a few different ways to compute the ratio of fractions. The one we used here may be a little unusual. All are equivalent.
[tex]\bullet\quad\dfrac{a}{b}\div\dfrac{c}{d}=\dfrac{a}{b}\times\dfrac{d}{c}\qquad\text{"invert and multiply"}\\\\\bullet\quad\dfrac{a}{b}\div\dfrac{c}{b}=\dfrac{a}{c}\qquad\text{ratio of numerators with the same denominator}\\\\\bullet\quad\dfrac{a}{b}\div\dfrac{a}{c}=\dfrac{c}{b}\qquad\text{inverse ratio of denominators with the same numerator}[/tex]
Compare.
A. <
B. >
C. =
D. cannot be solved
well, change 15/4 into a decimal, 3.75. And now, we can see which is greater. Considering the wholes, 2 and 3, 3 is greater than 2, so it would be 2.2 < 15/4.
So, basically A I think.
PLZ HELP AS SOON AS POSSIBLE!!!!!!!!! WILL GIVE LIKE, 5 STARS, & BRAINLIEST; THE WHOLE SHEBANG;
Part 1
Meg is a veterinarian. She found that 5 or, 50% of the dogs she saw this week were boxers. Steve is also a veterinarian. He found that 50% out of the 2 dogs he saw this week were boxers. Does each person need to find the part, the whole, or the percent?
Question content area bottom
Part 1
Meg needs to find the
▼
percent.
part.
whole.
Part 2
Steve needs to find the
▼
percent.
part.
whole.
Answer:
a. Meg needs to find the part
b. Steve needs to find the percent.
Step-by-step explanation:
A. Does Meg need to find the part, the whole, or the percent.
Meg already knows the whole and the percent.
The whole is the entire number of dogs seen: 16 dogs.
The percent is 50%.
Hence, she needs to find the part: this is how many (what part) of the 16 dogs she saw were boxers.
And she can do with a simple operation:
Part = whole × percent = 16 × 50% = 8. This is 8 dogs of 16 were boxers.
B. Does Steve need to find the part, the whole, or the percent.
He already knows the part (7 of the 35 dogs were boxers) and the whole (35 dogs).
Then he needs to find the percent, which he can do using the next operation:
Percent = (part / whole) × 100 = (7/35)×100 = 20%
Step-by-step explanation:
Part 1:
Meg needs to find the whole as 50% of the dogs = 5 therefore 100% equals 10 dogs.
Part 2:
Steve saw 50% out of two dogs meaning that he only saw 1 dog that is a boxer.
(PLEASE HELPP) The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11, while the number of 5th graders to that of the 6th graders was 13 to 9. By what percent did the number of 7th graders exceed that of the number of 5th and 6th graders taken together ?
Answer:
The number of 7th graders exceed that of the number of 5th and 6th graders taken together by 5.88%.
Step-by-step explanation:
I am going to say that:
x is the proportion of 5th graders.
y is the proportion of 6th graders.
z is the proportion of 7th graders.
The number of 6th graders in RSM summer camp to that of 7th graders was 4 to 11
This means that:
\frac{y}{z} = \frac{4}{11}
z
y
=
11
4
So
11y = 4z11y=4z
y = \frac{4z}{11}y=
11
4z
The number of 5th graders to that of the 6th graders was 13 to 9.
This means that:
\frac{x}{y} = \frac{13}{9}
y
x
=
9
13
9x = 13y9x=13y
x = \frac{13y}{9}x=
9
13y
All of them is 100%
This means that:
x + y + z = 1x+y+z=1
We need to find z.
y = \frac{4z}{11}y=
11
4z
x = \frac{13y}{9} = \frac{13*4z}{9*11} = \frac{52z}{99}x=
9
13y
=
9∗11
13∗4z
=
99
52z
Then
x + y + z = 1x+y+z=1
\frac{52z}{99} + \frac{4z}{11} + z = 1
99
52z
+
11
4z
+z=1
The lcm(least common multiple) between 11 and 99 is 99. Then
\frac{52z + 9*4z + 99z}{99} = 1
99
52z+9∗4z+99z
=1
187z = 99187z=99
z = \frac{99}{187}z=
187
99
z = 0.5294z=0.5294
By what percent did the number of 7th graders exceed that of the number of 5th and 6th graders taken together ?
z(7th graders) is 52.94%.
x + y(5th and 6th graders) is 100 - 52.94 = 47.06%
52.94 - 47.06 = 5.88
The number of 7th graders exceed that of the number of 5th and 6th graders taken together by 5.88%.
A chemist is using 389 milliliters of a solution of acid and water. If 14.6 of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.
Answer:
389 - 14.6 = 374.4
Step-by-step explanation:
374.4 milliliters of acid are in there.
Mrs. Parker has a small garden in her backyard. The total area of her garden is 3.5 square meters. The length is 5 meters.
What is the width of Mrs. Parker’s garden?
A.
0.7 meters
B.
70 meters
C.
0.07 meters
D.
7 meters
Answer:
B. 0.7
Step-by-step explanation:
3.5/5=0.7
One mom has 3 children, and each child attends a different level of school. If the mom plans to pick her children up, what would be her total distance traveled if she starts at the high school, then goes to the elementary school, and finally the middle school? (Write your answer as a decimal rounded to the nearest tenths place). *
Bob's pluming charges $25 per hour plus a service fee of 40$ for coming out to your house. Which equation is right?
1. y=25x
2. y=25x+40
3. y= 40x+25
4. y=25x-40
You make 12 equal payments for a go-kart. You pay a total of $1380. How much is each payment? The quotient is ______. So, each payment is ___________.
answer plz
Answer:
115; 115
Step-by-step explanation:
In this case, 1380 is the dividend, 12 is the divider, and the answer is the quotient. Thus we get the quotient, or each payment, is 1380/12=115
The total length of fabric needed is 375 m.
65% of 375 meters can be written as 0.65× 375 m = 243.75 m
The length of fabric still needed is 375 m − 243.75 m =
___m
Answer:
375 - 243.75 = 131.25
Step-by-step explanation:
The length of fabric still needed is 131.25 m.
Hope this helped!
HELP ME PLZZZZ. I don’t know!!
Answer:
w=-6
Step-by-step explanation:
-2(-6)>-4
12>-4
This is true.
Calvin digs a hole at a steady rate of 1(1)/(3) feet every hour.
Consider ground level to be 0 .
What value represents the elevation of the hole relative to ground level after digging for 2(1)/(2) hours?
Enter your answer as a simplified mixed number in the box.
Answer:
3 1/3 feet
Step-by-step explanation:
Ok so, he digs 1 1/3 feet every hour. And we're trying to find out how much he digs in 2.5 hours. We can simply multiply 1 1/3*2.5 giving us 3 1/3 feet.
Hope this helps :)
Please help me find all choices that apply to the question
Answer:
which question
Step-by-step explanation:
What is the value of m?
13.78 – m = 9.13
Answer:
4.65
Step-by-step explanation:
13.78 - m = 9.13
13.78 - 9.13 - m = 0 (subtracting 9.13 from both sides)
m = 13.78 - 9.13 (adding m to both sides)
m = 4.65
Answer:
m=22.91
Step-by-step explanation:
13.78+9.13=22.91
What is 35x 1 ? OMG this is such a hard question!! first one to answer will get a brainliest!!!
Answer:
its 35
Step-by-step explanation:
What does -3 ⅕ < 1 ⅗ indicate about the positions of -3 ⅕ and 1 ⅗ on a number line? Rewrite the statement using absolute value. Use the number line below to help.
the answer is a
i did the quiz
Simplify the expression. Drag and drop a number into each box to complete the simplification.
8 × (30 ÷ 15)2 + 3 = 8 × (___)2 + 3
= 8 × ___ + 3
=____ + 3
=____
numbers to drag and drop: 51, 32, 38, 4, 35, 2
Answer:
8 × (30 ÷ 15)2 + 3 = 8 × (2)2 + 3
= 8 × 4 + 3
=32 + 3
=35
Step-by-step explanation:
Answer: 35
Step-by-step explanation: Mark brainiiest please
A right triangle has sides of length 3, 4, and x. Find x if it is the hypotenuse.
HELP ME PLEASE
Answer:
5
Step-by-step explanation:
The rules for the hypotenuse is side a^2+side b^2=hypotenuse^2
a=3
b=4
3^2=9
4^2=16
9+16=25
5^2=25, so 5 is the hypotenuse.
:)
−2.4(m−2/3)=−9
Please help! I can't figure it out!
Answer:
−2.4(m−2/3)=−9 First you do the problem inside the parenthesis. Then figure out the answer for that and then -2.4 with whatever the answer was. then you will have the answer
Step-by-step explanation:
hope this hels
Answer: 4.416 (the 6 should have a line on top to show it goes on)
Step-by-step explanation:
I need halp plz, no incorrect
A. 6 m
B. 9 m
C. 12 m
D. 15 m
help is very much needed thxs
Answer:
Step-by-step explanation:
Need help will give brainleist
Answer:
B 5*2*8
Step-by-step explanation:
To calculate the volume multiply the 3 dimensions together. you don't use the diagonal.
what is 1+1-1 plssssssssssssssssssssssssssssssss its a test and its impossible to solve
Answer:
1
Step-by-step explanation:
1+1 =2
and 2-1=1
since the 2 is a bigger no. 1 got the sigh of +
Pls help me with this math.
Which fraction and decimals forms match the long division problem?
Answer:
A
Step-by-step explanation:
the numerator always goes into the dividend, and in this case the dividend is 7, so 7/9 is correct rather than 9/7. and the decimal form is 0.7777777+ it is not 0.7 because the question keeps adding zeros when the whole number is supposed to be 7, not 7.000. hope that helps.
how much water should be added to 5 gallons of 50% acid solution to get a 20% solution?
Answer:
7.5 gallons
Step-by-step explanation:
2.5/5+x=0.2
This question is based on the concept of solving an equation. Therefore, 7.5 gallons of water would be added to 5 gallons of 50% acid solution to get a 20% solution.
Given:
5 gallons of 50% acid solution to get a 20% solution.
According to question,
Let it be x gallons of water should be added to 5 gallons of 50% acid solution to get a 20% solution.
Now, forming the equation, we get,
0.50 ( 5 ) = 0.20 ( x + 5 )
Simplifying the equation.
We get,
2.5 = 0.2x + 1
1.5 = 0.2 x
x = 7.5
Therefore, 7.5 gallons of water would be added to 5 gallons of 50% acid solution to get a 20% solution.
For more details, please prefer this link:
https://brainly.com/question/21105092
What is the greatest common factor of 70 and 33?
Answer: 1
Step-by-step explanation: 1 is the greatest common factor of 70 and 33.
720x + 10 = 2170
What is x?
Answer:
x = 3
Step-by-step explanation:
720x + 10 = 2170
=> 720x = 2160
=> x = 3
Hoped this helped.
Answer:
x = 3
Step-by-step explanation:
First subtract 10 from 2,170 to get 2,160.
Next isolate the x variable by dividing 720 on both sides to get x = 3.
Hope this helps you :)
A holiday meal cost $12.50 a person plus a delivery fee of 30$. Which equation is right?
1. y=30+12.50x
2. y= 12.50+30
3. 12.50x=30
4. y=12.50+30x
Answer:
1. y = 12.50x + 30
Step-by-step explanation:
A holiday meal cost $12.50 a person plus a delivery fee of 30$
Let x = number of people ordering a meal and y = total cost
It cost 12.50 per person so the cost regarding the number of people that orders food can be represented by 12.50x.
There is also a $30 delivery fee.
So the total cost would (y) = 12.50x + 30
The answer would be 1. 12.50 and 30 just swapped places.
PLZ ANSWER AS SOON AS YOU CAN!!!!!!!!!!!
The tables show the numbers of white and yellow flowers Cara and Hector used in 5 different arrangements.
Cara's Flower Arrangements
White 3 6 9 12 15
Yellow 5 10 15 20 25
Hector's Flower Arrangements
White 4 8 12 16 20
Yellow 6 10 14 18 22
Part A
Are the numbers of white and yellow flowers in Cara's arrangements proportional?
Which equation relates the number of white flowers, w, to the number of yellow flowers, y?
A. Yes; y=35w
B. Yes; y=53w
C. No; y=3w+5w
D. No; y=5+3w
Part B
Are the numbers of white and yellow flowers in Hector's arrangements proportional?
Write an equation to relate the number of white flowers, h, to the number of yellow flowers, e.
A. Yes; e=32h
B. Yes; e=23h
C. No; e=h+2
D. No; e=h−2
Answer:
Part A - Yes; y=5/3w Part B - No; e=h+2
Step-by-step explanation:
The tables show the numbers of white and yellow flowers Cara and Hector used in 5 different arrangements.
Cara’s Flower Arrangements Proportional
White 3 6 9 12 15
Yellow 5 10 15 20 25
Hector’s Flower Arrangements Not Proportional
White 4 8 12 16 20
Yellow 6 10 14 18 22
Part A
Are the numbers of white and yellow flowers in Cara’s arrangements proportional?
Which equation relates the number of white flowers, w, to the number of yellow flowers, y?
Yes; y=3/5w
Yes; y=5/3w CORRECT ANSWER
No; y=3w+5w
No; y=5+3w
Part B
Are the numbers of white and yellow flowers in Hector’s arrangements proportional?
Which equation relates the number of white flowers, h, to the number of yellow flowers, e?
Yes; e=3/2h
Yes; e=2/3h
No; e=h+2 CORRECT ANSWER
No; e=h−2
They are correct because Part A is 1.666667 thats more than 1 so it cant be the first, and Part B, its the White flowers plus 2 to be Yellow flowers, not -.