Mathematics Middle School

Lucy has 27 coins that are either dimes or quarters. She has a total of $4.95. What set of equations could be used to find the number of dimes and quarters that Lucy has?

0.10D+0.25Q = 4.95D+Q=27

0.25D+0.10Q = 4.95D+Q=27

0.10D+0.25Q = 27D+Q=4.95

10D+25Q =27D+Q=495

Answers

Answer 1

Answer:

0.10D+0.25Q = 27D+Q=4.95

Step-by-step explanation:

Related Questions

-3 2/7 -(2 2/3) can someone please help me

Answers

Answer:-125/21 or -5 20/21


Steps:

First, change the mixed numbers to improper fractions.

So -3 2/7 = -23/7
2 2/3= 8/3

Second, make the denominators the same number

So multiply -23/7 by 3 and 8/3 by 7

-69/21-56/21

Subtract the numerators

-69-56= -125

So the answer is -125/21 or -5 20/21
125/21 that’s the answer to your problem

1. Diane's has $200 to spend on the basic phone service costs $17.89 per month. If Diane pays for 11 months how much money will she have left over?
2.To lay a drainage system it costs $120 for every 50 feet. Write an equation to determine the cost of laying 300 feet of drainage.
3.Solve: 12 = -4h + 7 +11h

Which of the following would be an appropriate first step to take in solving for "h"?

Group of answer choices

adding 7 to both sides

adding 12 to both sides

combining (-4h) and (11h)

multiplying both side by 4

Answers

Answer:

$3.21

Step-by-step explanation:

Answer:

1: $3.21.

2: 50x+120=300

3: h=5/7/ first step would be to adding 7 to both sides.

Step-by-step explanation:

for the 3rd:

you're combining like terms so you have to subtract 7 from both sides you gotta subtract 12-7 so that gives you 5=7h+7-7 and the subtract the 7-7, and that will give you 0 so you have 5=7h left.divide both sides by the same terms (7), so you'll have 5/7 and 7h/7 so 7/7=0 so you drop that and just have the h. now switch sides with the virable and the fraction you still have (5/7)you now have h=5/7.

Find 2 1/4 divided 3/8. Show your work (Simplify)

Answers

Answer: 6
First, we convert 2 1/4 into an improper fraction. So 9/4
Next, we multiply 9/4 to the reciprocal of 3/8 : 9/4•8/3= 72/12= 6/1
Conversion a mixed number 2 1/
4
to a improper fraction: 2 1/4 = 2 1/
4
= 2 · 4 + 1/
4
= 8 + 1/
4
= 9/
4


To find a new numerator:
a) Multiply the whole number 2 by the denominator 4. Whole number 2 equally 2 * 4/
4
= 8/
4

b) Add the answer from previous step 8 to the numerator 1. New numerator is 8 + 1 = 9
c) Write a previous answer (new numerator 9) over the denominator 4.

Two and one quarter is nine quarters
Conversion a mixed number 1 3/
8
to a improper fraction: 1 3/8 = 1 3/
8
= 1 · 8 + 3/
8
= 8 + 3/
8
= 11/
8


To find a new numerator:
a) Multiply the whole number 1 by the denominator 8. Whole number 1 equally 1 * 8/
8
= 8/
8

b) Add the answer from previous step 8 to the numerator 3. New numerator is 8 + 3 = 11
c) Write a previous answer (new numerator 11) over the denominator 8.

One and three eighths is eleven eighths
Subtract: 9/
4
- 11/
8
= 9 · 2/
4 · 2
- 11/
8
= 18/
8
- 11/
8
= 18 - 11/
8
= 7/
8

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(4, 8) = 8. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 4 × 8 = 32. In the following intermediate step, it cannot further simplify the fraction result by canceling.
In other words - nine quarters minus eleven eighths is seven eighths.

Which correctly shows the inequality x < 6?

Answers

Answer:

A

Step-by-step explanation:

x<6, so x can't be 6. Also, the arrow has to point to the left of 6 since x<6.

The correct answer is A since “<“ means less than

Evaluate: 75 − 21 × 2 − (3 + 7)

Answers

Answer:

23

Step-by-step explanation:

23.

Have a good day love!

I will give brainliest! Make sure to tell me each question label! In a triple batch of a spice mix, there are 6 teaspoons of garlic powder and 15 teaspoons of salt. Answer the following questions about the mix.7a, 7b, 7c, 7d
(7a) How much garlic powder is used with 5 teaspoons of salt? *
(7b) How much salt is used with 8 teaspoons of garlic powder? *
(7c) If there are 14 teaspoons of spice mix, how much salt is in it? *
(7d) How much more salt is there than garlic powder if 6 teaspoons of garlic powder are used? *

Answers

Answer:

(7a) 2 teaspoons of Garlic Powder

(7b) 20 teaspoons of Salt

(7c) 10 teaspoons of Salt

(7d)  9 more teaspoons of Salt

7a is 2 teaspoons garlic powder ; 7b is 20 teaspoons of salt ; 7c is 75 tsps of salt ; 9 teaspoons

i need help on this i was never able to figure it out

Answers

Answer:

the answer is 0

Step-by-step explanation:

Answer:

the answer is 2.5 hope this helps

Step-by-step explanation:

if not am deeply sorry

This expression involves two numbers written in scientific notation.

Which is the simplified form of the expression?

Answers

Answer: the answer for it would be 20000 or should be

Step-by-step explanation:

4.2e7/2.1e3 should come out to 20000 at least my graphing calc says it should but it should come out to 20k

The answer is 20,000 explain the answer
4.2/2.1 x 10 little 7/10 little 3 = 4.2/2.1 x 10 little 4 = 2 x 10 little 4 = 2x 10000= 20,000
I hope it helps:)

Choose one card value and its additive inverse. Choose from the list below to write a real-world story problem that would model their sum.
a. Elevation: above and below sea level
b. Money: credits and debits, deposits and withdrawals
c. Temperature: above and below 0 degrees
d. Football: loss and gain of yard

Answers

Answer:

D

Step-by-step explanation:

A truck and a SUV are 315 miles apart when they start moving towards each other on a straight road. The speed of the SUV is 55 while the truck's speed is 5 mph slower.

How far apart are the vehicles?

Please help me.

Answers

The answers 50, you would subtract the truck from the SUV.
How long have they been driving?

I NEED ANSWERS QUICKLY PLEASE HELP!!! (I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST WITH THE CORRECT ANSWER!!!)

f(n)=-3n-1
Given this explicit equation, what is the common difference?

Answers

The answer is +=3+_ on-1

Simplify the expression 15 − 3(3a + b) + 5a − 6b.

Answers

Answer:

Step-by-step explanation:

the answer is -4, 9, and 15

i need help ASAP!!!!!!!!!!!!!!!!!!​

Answers

A=81
Hope I’m right did the math real quick while doing a test good luck

You work two jobs in the winter. You babysit for your neighbor, making $6 per hour, and you clear snow from driveways, making $10 per hour. You want to buy the latest X-Box ™ that costs $500. Write an equation that represents how you can earn enough money to buy the latest X-Box ™.
SECOND PART
Describe two ways that you can earn enough money to buy the latest X-Box ™. Show calculations that prove your two ways are viable answers
I HAVE NO CLUE HOW TO DO THIS PART

Answers

Answer:

( 6 x 12 + 10 x 8 ) = 200 + 10 x 30 = 300

Step-by-step explanation: babysit for 12 hours

clear snow for 38 hours not all in the same day but still

Yah that’s rightttttttttttttttttttttttt

The 5 cheerleaders at Creekwood Middle School want to earn money to buy new uniforms. They need a total of $2500. A local business donated $1281.25 towards the cost of the uniforms. If each cheerleader earns the same amount, how much more money must each cheerleader earn?

Answers

Answer:

243.75 each

Step-by-step explanation:

2500-1281.25=1218.75

1218.75/5=243.75

hope this helps :)

2500-1281.25=1218.75/5=243.75

The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 inches, what is the length?
А. 12 inches
B. 15 inches
C. 21 inches
D.40 inches​

Answers

the answer would be B. 15 inches
Given :-

The perimeter of a rectangle is 42 inches. The width of the rectangle is 6 inches.

To Find :-

The length

Solution :-

We know that,

☆ Perimeter of a Rectangle = 2 (length + width)

Hence,

42 = 2 (length + 6)

or, 42/2 = length + 6

or, 21 = length + 6

or, length = 21 - 6

or, length = 15

The length is 15 inches.

Therefore, the correct answer is option (B) 15 inches.

Evaluate the expression. Write your answer as a fraction in simplest form.
-3 3/4 x 5/6 - 2 1/3=

Answers

Hi there! I couldn’t quite make out the fraction form, but I was able to get the decimal form which you might be able to convert. I got -5.458333(endless 3’s pretty much). Hope this helped you somewhat, good luck!

The expression in simplest form is 7 7/24.

What is a Fraction?

A fraction is a number that can be written in the form of p/q, where q≠0.

The expression given is -3(3/4) * (5/6) - 2(1/3)

-15/4 * 5/6 * (-7/3)

= (25*7) / (4*6)

= 175 /24

= 7 7/24

Therefore, the expression in simplest form is 7 7/24.

To know more about Fraction

https://brainly.com/question/10354322

#SPJ2

can someone help me with this

Answers

the answer would be -14 pemdas yk
it would be -14! glad I could help you!

You use a stain remover on two separate stains on a shirt. Design and use a simulation to find the experimental probability that the stain remover removes both the mud stain and the food stain. Probability of Stain Removal Mud 90% Food 80%

Answers

Answer:

you would have to get 2 shirts with stains with stain remover and test it

Step-by-step explanation:

Answer:ابالواغودقذزرقق#دريد زسسدييبذثثهعغف

Step-by-step explanation:قفالبيللالفل

Is this a function----------------

Answers

Answer:

yes

Step-by-step explanation:

hope this helps, pls mark brainliest :D

Answer:

Yes it is a function ------

The figure below shows a rectangular prism and a cube:

A rectangular prism and a cube are drawn side by side. The length of the rectangle prism is 5 inches, the width is 4 over 5 inch, and its height is 1 and 3 over 5 inches. The cube has a side length of 1 over 5 inch.

How many such cubes are required to completely pack the prism without any gap or overlap?

Answers

Answer:

Calculate the volume of each shape.

Volume of rectangle = 6 x 5/6 x 1 2/6 = 6 2/3 cubic inches.

Volume of cube = 1/6 x 1/6 x 1/6 = 1/216 cubic inch.

Now divide the volume of the rectangle by the volume of the cube:

6 2/3 / 1/216 = 1440

It will take 1.440 cubes to fill the rectangle.

Step-by-step explanation:

help please due now....

Answers

Answer:

x = 2

Step-by-step explanation:

1. Divide both sides by 2

2 (x + 3) ÷ 2 = 10 ÷ 2

2. Simplify

x + 3 = 5

3. Subtract 3 from both sides

x + 3 - 3 = 5 - 3

4. Simplify

x = 2

X=2 is the answer for sure

A recipe calls for 3 cups of milk for every 2 cups of flour. If you have 15 cups of milk, how many cups of flour will you need?

Answers

10 cups of milk for 15 cups of flour

A hospital ordered 4 boxes of cotton swabs. There were 71 cotton swabs in each box. How many cotton swabs did the hospital order in all

Answers

Answer:

284 you multiply the numbera

Step-by-step explanation:

71×4=284

284 is your answer I’m pretty sure.

Write the expression with fewer terms.

12x-4y+5x

Answers

17x-4y

Have a nice day!!!

( Don’t forget to mark branliest if it helps :) )

Answer:

17x - 4y

Step-by-step explanation:

plz help with this problem

Answers

For the first one I think it is 113.1 (solved using equation A = pie x r^2) For the second one I think its 616 having done 1/4 x 22/7 x 28^2

ILL GIVE BRAINLIEST I NEED HELP ASAP
Question 1
What is the probability of rolling an odd number on a fair number cube and tossing tails on a fair coin?

A. 1/4
B. 1/2
C. 5/8
D. 5/6

Question 2
A coin is tossed and a fair number cube is rolled.
What is the probability of getting heads and a 3 or 4?

Question 3
You toss a coin and a dice. The probability of getting tails and a 1 or 2 is 1/6. If you conduct 180 trials, predict the number of times the outcome will be heads and a 1 or 2.

A. 1080
B. 30
C. 20
D. 60

Answers

Answer:

1 is A    2 IS  1/8   3 IS B= 30

Step-by-step explanation:

More help please! Giving 10 points for this :)

Answers

I can’t see it, what does it say?
So for the first one, you want to look at the ratio;
1 cm : 2 m and 1 cm : 4 m
This means that for every 2 meters you would draw one centimeter, or every 4.
Drawing B is the larger drawing because it uses a larger number of meters.

The second one is almost like the first, except for every 10 meters you draw 1 centimeter. 50 divided by 10 is 5 and 25 divided by 10 is 2.5 These are the centimeters.
Draw 5 cm for the length and 2.5 cm for the width.

Unit 3 Lessons 1-4 Practice Problems
24 of 2524 of 25 Items























































































Item 24
POSSIBLE POINTS: 21.33
Based on the given measurement in each situation below, estimate the other two measurements for the circle. Use 3.14 as an approximation for pi and round your answer to the nearest whole number.

Remember: Circumference= diameter × π OR Circumference= 2×radius× π

Type your answers in the boxes below.

1. The length of the minute hand on the clock is 5 inches.

Diameter:
inches Circumference:
inches

2. The distance across a sink drain is 3.8 cm.

Radius:
cm Circumference:
cm

3. The tires on a mining truck are 14 feet tall.

Radius:
feet Circumference:
feet

4. The fence around a circular pool is 75 feet long.

Diameter:
feet Radius:
feet

5. The distance from the tip of a slice of pizza to the crust is 7 inches.

Diameter:
inches Circumference:
inches

6. Breaking a cookie in half creates a straight side 10 cm long.

Radius:
cm Circumference:
cm

7. The length of the metal rim around a glass lens is 190 mm.

Diameter:
mm Radius:
mm

8. From the center to the edge of a DVD measures 60 mm.

Diameter:
mm Circumference:
mm

Answers

there’s nothing there

3x+5=29-9x

Solve x. Pls show your working

Answers

Answer:

x=2

Step-by-step explanation:

[tex]\mathrm{Subtract\:}5\mathrm{\:from\:both\:sides}[/tex]

3x+5-5=29-9x-5

[tex]\mathrm{Simplify}[/tex]

3x=-9x+24

[tex]\mathrm{Add\:}9x\mathrm{\:to\:both\:sides}[/tex]

3x+9x=-9x+24+9x

[tex]\mathrm{Simplify}[/tex]

12x=24

[tex]\mathrm{Divide\:both\:sides\:by\:}12[/tex]

[tex]\frac{12x}{12}=\frac{24}{12}[/tex]

[tex]\mathrm{Simplify}[/tex]

x =2

Answer:

x = 2

Step-by-step explanation:

1) Reorder the terms

3x + 5 = 29 - 9x
3x + 5 = -9x + 29

2) Subtract 5 from both sides


3x + 5 - 5 = -9x + 29 - 5

3x = -9x + 24


3)  Add 9x to both sides

3x + 9x = -9x + 9x + 24

12x = 24


4) Divide both sides by the same factor

12x/12 = 24/12

x = 2

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