Lucas has a jar of coins that contains only nickels and dimes. He has 30 coins itſ the jar worth a
total of $2.10. Which system of equations could be used to find the number of nickels, n, and
the number of dimes, d, that Lucas has in the jar?
А
n+d = 2.10
5n+100 = 30
B
n+d = 30
5n-10d =2.10
с
n-d = 30
0.05n+0.10d = 2.10
D
n-d=2.10
0.050+ 0.100 = 30

Answers

Answer 1

Answer:

Step-by-step explanation:

Lucas Has A Jar Of Coins That Contains Only Nickels And Dimes. He Has 30 Coins It The Jar Worth Atotal
Answer 2

The correct system of equations which is the number of nickels and dimes that Lucas has in the jar is:

n + d = 30

0.05n + 0.10d = 2.10

What is the equation?

The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.

Lucas has a jar of coins that only contains nickels and dimes. He has 30 pennies in the jar, which is worth $2.10.

Let represents the number of nickels, n,

And the number of dimes, d, that Lucas has in the jar

The system of equations to find the number of nickels and dimes that Lucas has in the jar is:

n + d = 30

0.05n + 0.10d = 2.10

This system can be used to solve for the values of n and d. The first equation represents the total number of coins, and the second equation represents the total value of the coins in the jar.

Learn more about the equation here:

brainly.com/question/13947055

#SPJ2


Related Questions

(-5,-1); 2y=2x-4 help me ASAP please

Answers

(-5, -1) is not a solution to the equation 2y = 2x - 4.

What is a solution?

Solutions are the values of an equation where the values are substituted in the variables of the equation and make the equality in the equation true.

We have,

2y = 2x - 4 _____(1)

Ordered pair: (-5, -1)

Now,

(-5, -1) = (x, y)

Substitute in (1)

2y = 2x - 4

2 x (-1) = 2 x (-5) - 4

-2 = -10 - 4

-2 = -14

This is not true.

Thus,

(-5, -1) is not a solution.

Learn more about solutions of equations here:

https://brainly.com/question/545403

#SPJ1

A cylinder has a radius of 3 in and a volume of approximately 136.78 in? What is the height of the cylinder?
Round to the nearest tenth.

Answers

Answer:

4.835(I don't know unit.(m/in/cm)

Step-by-step explanation:

volume=πr^2h

136.78=22÷7×3^2×h

h=136.78×7÷(22×9)=4.835

Write an expression for "h less than 13"

Answers

Answer:

13-h is h less than 13. this is how you answer this.

Hey there!

Sometimes “less than” means “>” ( a number smaller than the number that’s being compared to) or “subtraction”

So, therefore your answer should be

[h < 13] or [h - 13]

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

PLEASE HELP!!
Which inequality describes all the solutions to -5x + 6 -9
B. x 4

Answers

Answer:

-5x-3

Step-by-step explanation:

-5x+6-9=-5x-3

The inequality that describes all the solutions to the given inequality expression is x > 4

Given the inequality expression -5x + 6 < 2(-3 − x)

Expand the right-hand side of the ineqality

-5x + 6 < -6 - 2x

Collect the like terms

-5x + 2x < -6 - 6

-3x < -12

Divide both sides by -3

-3x/-3 > -12/-3

x > 4

Hence the inequality that describes all the solutions to the given inequality expression is x > 4

Learn more here: https://brainly.com/question/15816805

The cell phone price was originally $457. It is now being sold for $318. State the change to the nearest percent


I really need help

Answers

Answer:

30.4%

Step-by-step explanation:

Given data

originally price $457

new price= $318

Required

The percent mark down

Percent markdown= original- new/original*100

substitute

Percent markdown= 457- 318/457*100

Percent markdown= 139/457*100

Percent markdown=0.304*100

Percent markdown=30.4%

Hence the price was reduced by 30.4%

can you pleas help me fine answer for
y-9=7(x-10)

Answers

Answer:

down below

Step-by-step explanation:

x = y/7 + 61/7

y= 7x - 61

factorize -pq -pr +mq +mr​

Answers

Answer:

(q + r) (m - p)

Explanation:

-pq - pr + mq + mr​Factor out common term 'p'

= -p(q + r) + mq + mr

Factor out common term 'm'

= -p(q + r) + m(q + r)

Factor out common term '(q + r)'

= (q + r) (-p + m)

(q + r) (m - p)

- PNW

pls help 60 POINTS ASAP

Answers

Answer:

4 by 5 inch rectangle

Step-by-step explanation:

Answer:

4 by 5 inch rectangle

Step-by-step explanation:

Loading . . .

Help plz I don’t know how do this I’m am so confused I’m this

Answers

Answer: Example for ratio: For every 1 bike there are two wheels

Example for rate: A jet is traveling 460 mph

Step-by-step explanation:

What is the value of g?

___°​

Answers

Answer:

31 degrees

Step-by-step explanation:

Answer:

31 Degrees

Step-by-step explanation:

Since this is a right angle, it will equal 90 degrees.

Take 90 and subtract 59 to get g.

g = 31 degrees

Pls Help!! will give 15 points
solve for x

7(8-x) = 210

Answers

Answer:

x=266

Step-by-step explanation:

I'm sure if this is correct but this is how I did it seven times eight is 56 and you have to subtract that number by x so x would have to be bigger so it would be 56 minus 266

will give you 210

Answer:

x=-22

Step-by-step explanation:

7(8-x)=210

you would use the distributive property

56-7x=210

then subtract both sides by 56

-7x=154

then divide both sides by -7

x=-22

Find the value of x. Your answer must be exact.
х
45° 18

Answers

Answer:

x = 63

Step-by-step explanation:

Simplifying

x + -18 = 45

Reorder the terms:

-18 + x = 45

Solving

-18 + x = 45

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '18' to each side of the equation.

-18 + 18 + x = 45 + 18

Combine like terms: -18 + 18 = 0

0 + x = 45 + 18

x = 45 + 18

Combine like terms: 45 + 18 = 63

x = 63

Simplifying

x = 63

A surfer is riding a 7 foot wave. The angle of depression from the surfer to the shoreline is 10 degrees. What is the distance from the surfer to the shoreline

Answers

Step-by-step explanation:

The distance from the surfer to the shoreline will be found as follows:

tan θ= opposite/adjacent

θ=10°

opposite=7ft

adjacent= x ft

substituting the values in our formula and solving for x we get

tan 10=7/x

hence

x=7/tan10

x=39.69897~ 39.7 ft

The surfer is 39.7 ft from the shoreline.

Answer:

The surfer is 39.7 ft from the shoreline.

Step-by-step explanation:

Billy wrote a total of 32 pages over 16 hours. After spending 21 hours writing this week, how many pages will Billy have written in total? Assume the relationship is directly proportional.

Answers

Answer:

42

Step-by-step explanation:

Answer:

I'm not 100% sure about this but i think its 42

Step-by-step explanation:

this is what i did

32/16=2

2*21=42


Jack is 1.78 m tall.
Amy is 5 cm taller than Jack.
How tall is Amy?

Answers

Answer:

1.83

Step-by-step explanation:

1.78 + 5 cm

because it says she is taller so you add both

Height of Amy who is 5 cm taller than Jack is 1.83 meters.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, Jack is 1.78 m tall and Amy is 5 cm taller than Jack.

Therefore, The sum of the height of Jack and 5 cm more is the height of

Amy.

Therefore,

178 cm + 5 cm = 183 cm is the height of Amy. (1m = 100 cm)

So, 183 cm is equal to 1,83 meters.

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ2

Which of the following graphs represents the equation y=-2x+3?
D
5
5
(0,3)
(0, 3)
(2, 2)
(1, 1)
(1, 1)
X
(-1,-1)
50.-2)
15
(0.3)
- 5

A. Graph A
B. Graph B
C. Graph C
D. Graph D
need help asap

Answers

graph b
y=-2x+3

start and plot at y intercept, 3. -2, can be rewritten as -2/1 is your slope. slope is rise over run, so y/x so 2 down, 1 right
B - you can use desmos . com to graph

April, May and June have 90 sweets between them. May has three-quarters of the number of sweets that June has.

April has two-thirds of the number of sweets that May has. How many sweets does June have?

Answers

Answer:

40

Step-by-step explanation:

Can someone please help me solve this (7th grade math)

Answers

Answer: 8x = 72

Step-by-step explanation:

and in case you need to go any further at any point, x = 9

8x = 72

It’s this because you are subtracting 14 from both sides so that it’s eliminated and then you can solve for x

A theater is selling tickets for a performance. Mr. Smith purchased 8 senior tickets and 5 child tickets for $136 for his friends and family. Mr. Jackson purchased 4 senior tickets and 6 child tickets for $96. What is the price of each ticket?

Answers

Answer:

for the seniors, the answer is $12, and for the children, the answer is 8.

Step-by-step explanation:

16q3-48q2+32q what would be the steps on how to do this? please?​

Answers

Answer:

Its nothing complicated, you just have to combine all the like terms, just make sure the lvariables are the same before combining of course.

so assuming the gaps missng are exponents

the solution is the same exact thing

it can’t be simplified anymore since 16q^3 or -48q^2 can’t due to different exponents which thefore can’t combine

same with 32 q, nothing combines

The answer is the original expression

Margo participated in a surfing competition. During the competition, the height of the ocean waves increased from two feet to six feet. a. Identify how many times greater the amount of energy carried by the six-foot wave was than the amount of energy caried by the two-foot wave. Explain your reasoning.

Answers

Answer:

three times the two foot wave wuold be the six foot wave

Step-by-step explanation:

because its right

In a high school football stadium, there are 3,892 seats. The stadium has 14 sections. Each section has the same number of seats.

How many seats are in each section?

PLZ help!!!!!! :(

Answers

Answer:

278, pls brainliest

Step-by-step explanation:

Answer:

278 seats per section

Step-by-step explanation:

Division

The division allows us to divide or 'share' numbers to find the answer to a problem.

For example, to evenly share 10 sweets between 5 kids, we use division to find 10/5 = 2 sweets per kid.

It's given a high school football stadium has 3,892 seats distributed in 14 sections and each section has the same number of seats.

To find the number of seats in each section we use division:

3,892 seats / 14 sections = 278 seats per section

Calculate or Simplify the value of each expression
a {-8} . 2/3
b {-8} .-2/3
c -18/3
d 18/-3
e -18/-3

Answers

Answer:

Step-by-step explanation:

[tex]b) (-8)*\frac{-2}{3}=\frac{(-8)*(-2)}{3}=\frac{16}{3}=5\frac{1}{3}\\\\c) \frac{-18}{3}= -6\\\\d) \frac{18}{-3}=\frac{6}{-1}= -6\\\\e) \frac{-18}{-3}=\frac{18}{3}= 6[/tex]

3.2÷(0.16+0.24)2( the 2 right next to this is a exponent)

Answers

Answer should be “20”

By the way next time just do (0.16+0.24)^2


a) Write 600 as the product of prime factors.
Give your answer in index form.

Answers

Answer:

2^3*5^2*3

Step-by-step explanation:

600=2*2*2*5*5*3=2^3*5^2*3

Zoe went shopping for a new pair of pants. The listed price of the pair of pants was
$45, but the price with tax came to $46.35. Find the percent sales tax.
ASAP!

Answers

Answer:

3%

Step-by-step explanation:

46.35 - 45 = 1.35 (change)

change/original price X 100

1.35/45 = 0.03

0.03 X 100 = 3

sales tax 3%

Which of the following fraction pairs is equivalent?
6/12 and 8/20. 16/20 and 20/35. 2/6 and 7/21. 8/24 and 8/20

Answers

Answer:

2/6 and 7/21

Step-by-step explanation:

5x−4=16
what do i do

Answers

Answer:

x=4

Step-by-step explanation:

5x-4=16

5x-4+4=16+4   add 4 to each side

5x=20              simplify

5x/5=20/5       divide each side by 5

x=4                   simplify

Fill in the missing numbers to complete the pattern:

5.81, ,5.91,5.96, ,6.06

Answers

you’re going to be adding by .05

so the first one would be 5.86 and the second one would be 6.01

hopefully this helps!

dave uses the associative property of multiplication to write an expression that is equivalent to 8 times 5 times b which expression did he write

Answers

Answer:

The associative property of multiplication

 8 . ( 5. b ) = ( 8. 5) . b

Step-by-step explanation:

Explanation

The associative property of multiplication

 a . ( b. c ) = ( a. b) . c

Given numbers are  8, 5 and b

The associative property of multiplication

 8 . ( 5. b ) = ( 8. 5) . b

 8 . ( 5. b ) = ( 8. 5) . b = 40 b

Other Questions
PLEASE HELP! ITS DUE TODAY!!! What is the greatest common factor (GCF) of 24 and 36?41226 Receive cash from customers, $15,000. Pay cash for employee salaries, $9,000. Pay cash for rent, $3,000. Receive cash from sale of equipment, $8,000. Pay cash for utilities, $1,000. Receive cash from a bank loan, $4,000. Pay cash for advertising, $7,000. Purchase supplies on account, $3,000. Required: Post transactions to the Cash T-account and calculate the ending balance. What experience didMeriwether Lewishave that might help him be successful during the expedition? 14 points please HELP ME Read the passage, then answer the question that follows.It has had a hard life of it, this feeling of Imperial patriotism. It was checked for a generation by the apathy and the indifference which were the characteristics of our former relations with our Colonies, but it was never extinguished. The embers were still alight, and when in the late war this old country of ours showed that it was still possessed by the spirit of our ancestors, and that it was still prepared to count no sacrifice that was necessary in order to maintain the honor and the interests of the Empire, then you found a response from your children across the seas that astonished the whole world by a proof, an undeniable proof, of affection and regard. I Believe in a British Empire,Joseph ChamberlainWhy is Chamberlains argument effective? Check all that apply.He makes a concession about imperialism, showing both sides of the argument.He uses an appeal to emotion with words like honor and sacrifice to stir nationalism.He uses an appeal to logic by comparing imperialism to a glowing fire.He cites statistics to support his claim.He cites evidence of winning the recent war to show that people still sacrifice for the empire What is the molar concentration of a solution of 9.88 g MgSO, dissolved in 75 mL water ? Write the equation of a line going through the points (4,2) and (7,-3). This committee is designed to research or work on a specific event or issue, such as the assassination of JFK or the climate crisis. Grey ran 2.4 times as many miles as Emory. If Emory ran 2.08 miles, how many miles did grey run? Which information in a bibliographic citation can you use to determine ifinformation is valid or not? Your test in math class has problems worth 2 points and problems worth 4 points. Altogether the test has 100 points. Write an equation that represents the total points on the test formed by the number of 2-point problems and the number of 4-point problems. Use the quadratic formula to find the solutions fory = 3x^3 + 8x - 1 A company has derivatives transactions with Banks A, B, and C which are worth +$20 million, $15 million, and $25 million, respectively to the company. How much margin or collateral does the company have to provide? The transactions are cleared bilaterally and are subject to one-way collateral agreements where the company posts variation margin, but no initial margin. The transactions are cleared centrally through the same CCP and the CCP requires a total initial margin of $10 million. Select the word that offers the best antonym for wan.A. cheerful B. flushed C. grimD. unrecognizable these are used to find information on the internet they include key words side bars hyper link and serch enjins Identify the English cognate for each French, German, and Spanish word used in the sentences below.I got caught telling a lie, and my French grandmother advised me, "You must always be honnte so that people knowthey can trust you!"it is time to dekorieren the room for our party" our German language club adviser announced"Stop! You are not permitted acceso to that part of the museum," the guard called out to us at the Spanish HeritageMuseum Please help me 35 points but please do not abuse this and answer incorrectly. Will name brainliest Thank you :) Calculate the mass of butane needed to produce 99.0 g of carbon dioxide.Express your answer to three significant figures and include the appropriate units. look at screenshot and answer question