Mathematics High School

Rob has 40 coins, all dimes and quarters, worth $7.60. How many dimes
and how many quarters does he have?
... please solve this using if systems of equations

Answers

Answer 1

seen you with ur ex

Related Questions

A gym charges an annual membership fee of $120 plus $45 per month to use the pool facilities. What is the cost of one year of membership at the gym that included use of the pool?

Answers

I think it’s $660 because the $120(membership fee) plus $45x 12 (for each month or the year) makes for a total of $660.

WILL MARK BRAINLIEST

Answers

Answer:the repeating digit is 6

Step-by-step explanation:

can i have brainliest

Which expression is equivalent to 8 x 2 − 2 x − 3 ?

Answers

you have to follow PEMDAS. you multiply first and then subtract. I hope this helps and let me know if I got it wrong. Sorry it’s upside down. Click on the picture and then flip it using the icon at the top

Enter an algebraic inequality for the sentence. Use x as your variable.


The quotient of three times a number and 4 is no more than 13.

Answers

Answer:

3x + 4 ≤ 13

Step-by-step explanation:

Fully simplify 16x^4(2x^2y)

Answers

STEP 1:
Equation at the end of step 1

(16 • (x^4)) • (2x^2 • y)

STEP 2:

Equation at the end of step 2:

2^4x^4 • 2x^2y

STEP 3:

Multiplying exponential expressions :

3.1 x^4multiplied by x^2 = x(4 + 2) = x^6

Multiplying exponents:

3.2 2^4multiplied by 2^1 = 2^(4 + 1) = 2^5

Final result :
2^5x^6y

Is z = 5 a solution to the inequality below?
z > 12
yes
no

Answers

Answer:no

Step-by-step explanation:z should be more than 12 like 13, 16.67,...

Answer:

No

Step-by-step explanation:

Z=5

5 >12 5 is not greater than 12.


You estimate that there are 32 candies in a bag.
and find there are actually 29 candies. Find the percent error. Round to the
nearest tenth of a percent if necessary.
a. 0.09%
C. 9.4%
b. 0.10%
d. 10.3%

Answers

Answer:

D. 10.3%

Step-by-step explanation:

Find the percent error using the formula:

percent error = | (observed - expected) / expected | x 100

32 is the observed value, and 29 is the expected value

Plug in these values to solve for the percent error:

percent error = | (observed - expected) / expected | x 100

percent error = | (32 - 29) / 29 | x 100

percent error = 10.3%

So, the correct answer is D. 10.3%


Find the solution of the system of equations.
4x – 5y = 46
-4x – 4y = 8​

Answers

Answer:

(4,-6) or x=4 and y= -6

Step-by-step explanation:

Answer:

x = 4 ; y= -6

Step-by-step explanation:

-9y = 54

y = -6

4x +30 = 46

4x = 16

x = 4

what is the rate of change and initial value for this graph?

Answers

Answer:

4/7

Step-by-step explanation:

the rate of change (aka slope) is the change in y over change in x and as y goes up 4 x goes up 7 so the rate of change is 4/7

have a great day :D

Please I need help I’m sorry for bothering

Answers

Answer:

A

Step-by-step explanation:

Answer:

A

Explanation:

Since you are adding the numbers in the parenthesis, it doesn’t matter which order they go in, the answer won’t change.

Please please help help please please help me please ASAP and NO LINKS

Answers

Answer:

Q1: (-4,0)

Q2: 3

Step-by-step explanation:

I really need help. I've checked everywhere and it says cannot be factored. I will give brainliest to whoever can help me and give the correct answer. PLEASE HURRY!

Answers

Answer:

B) -5, 5, -7, 7           

Step-by-step explanation:

3x² - bx + 2

factor:

(3x - 2 )(x - 1) = 3x² - (5)x + 2      so 5 does work

(3x - 1 )(x - 2) = 3x² - (7)x + 2      so 7 does work

(3x + 2 )(x + 1) = 3x² + 5x +2    =    3x² - (-5)x + 2      so -5 does work

(3x + 1 )(x + 2) = 3x² + 7x + 2   =    3x² - (-7)x + 2      so -7 does work

3/10 x 120 pls help me do this question

Answers

Answer: 36

Step-by-step explanation: First you will convert 3/10 into 0.3. Then you will multiply it by 120 by setting it up like this:

120

0.3

For now ignore the decimal and add it later when you are done. I hope this helps!

pls help i will give brainliest

Answers

It is B because yiu solve

Plz help I will give brainliest

Answers

Answer:

Should be the second and third ones. If you multiply the values together, 3/4s will equal 3/16 and 3/32 with the other value.

HELP ME PLEASE NO LINKS!!!!! IM TIMED :(((((

Answers

Answer: -first one is equal to 96 cm^2

-second one is equal to 25.5 cm^2

-third one is equal to 82.8 cm^2

-last one is 34.04 cm^2

I used the calculator on GO0GLE to find it out....

Awnswer this Pls! 70 points

Answers

Answer:

the answer is  true

Step-by-step explanation:

Answer:

false i hope this helps and please mark as brainly

What % of $30 is $21?

Answers

Answer:

70

Step-by-step explanation:

Answer:

x/100 x 30 = 21 (solve for x) x =70

I wish I could explain more but if your just lazy to do this i wont explain but if you honestly dont know I will explain, so solve for x you must multiply by a 100 on both sides and on the right side you multiply it to the fraction so x/100 x 100 = x (variable by itself means 1) then 21 x 100 = 21,000 therefore you are left with 30x since you are multiplying x and 30 together then you will divide by 30 on both sides to get x = 70

can you answer my question please?

Answers

Answer:

hi

Step-by-step explanation:

Can you please help me!!

Answers

Answer:

the slope is 2x

Step-by-step explanation:

It goes up 12 units and right 6 units, so divide 12 by 6

next in the table put 6 and 12, then 12 and 24

finally, the equation is y = 2x

Please help me!!!!!!!!!

Answers

Answer:

396

Step-by-step explanation:

You multiply 3 times 3 times 4 times 11 to find your answer 396.

You could split them in two different shapes either a rectangle and square or two rectangles and add up all sides of one then do the same to the other and add them both

The volume of this cylinder is 1,077.02 cubic inches. What is the radius? Use ​ ≈ 3.14 and round your answer to the nearest hundredth.

Answers

Answer:

This Answer :)

Step-by-step explanation:

sorry if wrong :)

Hmm sebelumnya mangap yah geng

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mangap...yah

Mangap juga tulisan kurang rapi dan cuantek

Thx :)

Find the equation of the line.Use exact numbers.

y= ___ x+ ___

Answers

answer: y=3x+3

explanation:

I NEED THIS ASAP I will give 40 POINTS AND WILL MARK BRAINLIEST!!!

Answers

Answer:

1st attachment x=25,

2nd attachment x=107, x=-26

Step-by-step explanation:

Step-by-step explanation:

1. It's x = 25

Hope It Helps U

Help me please thanks so much

Answers

sub in the numbers
6/3
=2/1
which is basically 2, the first option

Answer:

2

Step-by-step explanation:

x/y equals to 6/3. Simplify it- 6(numerator) can go into 3(denominator) twice, so therefore it is 2.

Or you can divided 6(numerator) by 3(denominator), and get 2.

Hope this helped, guys!

Can someone please help with this? I am so confused
substitute a
-13 ; b = -9 ; C = 2 and evaluate each expression.
17. 2c + b - a + 14
18. -(-2a) + 16 - b2
19. -3b + C - a + 4

Answers

Answer:

Basically adding in and subing the letters with the numbers given too you below

Step-by-step explanation:

2(2)+(-9-13)+14= -4

-(-2(-13)+16-(-9)2= -60

-3(-9)+(2-13)+4= 48

At a sale, coats were sold for $17 each. If the coats originally cost $20 each, what percentage of its original price was a coat sold for?

Answers

15% off
$20 is 100%
$10 is 50%
$1 is 5%

Use that to work them out and voila

Please help!! I'll give brainliest and the rest!!

Answers

Answer:

C. 4c < 60

Step-by-step explanation:

Isabell + 3 sisters

good luck, i hope it helps :)


Plz help ASAP look at the pictures it’s the question and stuff plz and thank you

Answers

Answer:

oh this is not easy hold on

Step-by-step explanation:

The total cost of a sweater and a pair of pants was $89.47. If the price of the sweater was $8.53 less than the pair of pants, what was the price of the sweater? Express your answer as a simplified fraction or a decimal rounded to two places.

Answers

Answer:

Let S = price of sweater

Let P = price of pants

S + P = 89.47 because that was the total spent

S = P - 8.53   because the sweater is 8.53 less than pants

Substitute P-8.53 in place of S in the

1st equation and solve for P

P - 8.53 + P = 89.47

2P - 8.53 = 89.47     add 8.53 to both sides

2P = 89.47 + 8.53

2P = 98.00  divide both sides by 2

P = 98.00/2

P = $49.00

S = P - 8.53

S = 49.00-8.53

S = $40.47

A sweater costs $40.47 and the pants cost $49.00

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