In a child’s bank are 11 coins that have a value of $1.85. The coins are either quarters or dimes. How many coins are quarters?

Answers

Answer 1

Answer:

The child has 6 dimes and 5 quarters.

Step-by-step explanation:

Let q and d represent the number of quarters and of dimes respectively.

Then q + d = 11 (Equation A), and ($0.25/quarter)q + ($0.10/dime)d = $1.85 (Equation B).

Multiply the 2nd equation by 100 to remove the decimal fractions:

25q + 10d = 185 (Equation C)

Now multiply the 1st equation by -10 to obtain -10q - 10d = -110 (Equation D), and combine this result with Equation C:

-10q - 10d = -110

25q + 10d = 185  

--------------------------

15q = 75, and so q = 75/15 = 5.

According to Equation A, q + d = 11.  Replacing q with 5, we get:

5 + d = 11, and so d = 6.  

The child has 6 dimes and 5 quarters.

Answer 2

Answer: The amount of money in quarters is $1.75

Step-by-step explanation: There are 7 quarters. 25c+25c+25c+25c+25c+25c+25c=1.75


Related Questions

GIVING BRAINIEST IF CORRECT!!
Find the area of the shaded region.

Answers

Area of Shaded triangle as a whole: 136cm^2
Area of Rectangle 1 : 20cm^2
Area of Rectangle 2 : 6cm ^ 2

Area of the shaded region :
136 - (20+6)
136 - (26)
110 cm^2

Answer:

110 cm²

Step-by-step explanation:

17 · 8

136 cm²

4 · 1.5

6 cm²

5 · 4

20 cm²

20 cm² + 6 cm²

26 cm²

136 cm² - 26 cm²

110 cm²

what is the equation of the line that is parallel to 2x = 1 - 3y and passes through (9,4),

A y= -2/3x+10
B y= 2/3x-2
C y=-3/2x+17/2
D y=3/2x-1/2

Answers

Answer:

A y= -2/3x+10

Step-by-step explanation:

___________

Answer:

A. y=-2/3x+10

Step-by-step explanation:

...........

help me please !!!!!

Answers

Answer:

Answers are located below <3

Step-by-step explanation:

1. 2 days

2. 11 days

3. May 16th

4. June 12th

5. 5 days ago

6. May 29th

Number 1: 2 days left

Number 2: 11 days

Number 3: May 17

Number 4: May 19

Number 5: 5 days ago

Number 6: May 29

a data set has a mean 25 and standard deviation 5 find the z score of 39

Answers

The answer to your question is 14/5

Answer:

[tex]\boxed {\boxed {\sf z=2.8}}[/tex]

Step-by-step explanation:

The z-score helps describe a value's relationship to the mean. It tells us how many standard deviations a value is from the mean. The formula is:

[tex]z= \frac{x- \bar x}{s}[/tex]

where x is the value, x-bar is the mean, and s is the standard deviation.

We know the data set has a mean of 25 and a standard deviation of 5. The value we are finding the z score for is 39.

x= 39 x-bar= 25 s=5

Substitute the values into the formula.

[tex]z= \frac{ 39-25}{5}[/tex]

Solve the numerator.

[tex]z= \frac{ 14}{5}[/tex]

[tex]z=2.8[/tex]

The z-score for 39 is 2.8. This means a value of 39 is 2.8 standard deviations greater than the mean.

4) Chelsea has homework in six subjects.
She is deciding what order to complete
them in

Answers

Answer:

This isn't really a math problem since there aren't many numbers or variables provided to create an equation. So Chelsea can complete her homework in any order of her choice, but I would say that she should complete the homework that's due first before moving onto the more recent homework that was given.

A cone has a radius of 2 centimeters and a height that is 24 cm. Using 3.14 for pi, which of the following can
be used to calculate the volume of the cone?

Answers

Answer:

option 3

Step-by-step explanation:

[tex]volume = \frac{1}{3} \pi r^2 h = \frac{1}{3} \times 3.14 \times 2^2 \times 24[/tex]

Which table shows exponential decay?


Sorry can’t get all the graphs but if it’s not one of these then I know it’s the other one

Answers

Answer:

The 1st you show is an expositional decay.

Step-by-step explanation:

If you notice it is a declining power of 2

y = 2**(5-x) which is nonlinear

The 2nd is an arithmetic decline (constant decline) and the 3rd is a geometiric decline (constant ratio).

what is the measure of DC?
A. 39
B. 117
C. 78
D. 24

Answers

I believe the answer to the question is 78

Ty has a $30 gift card. He already bought a $9 book, and wants to buy $3
journals. How many journals can she buy without going over the card's
limit?

Answers

Answer:

ty can buy 7 journals

Step-by-step explanation:

Answer:

7 Journals

Step-by-step explanation:

$30-$9=$21

$21/$3=7

PLEASE HELP!! NO LINKS!!

Answers

Area = 1/2 × NMP angle in radian × radius^2

Area = 1/2 × ( 40pi /180 ) × 12^2

Area = 1/2 × ( 2pi / 9 ) × 144

Area = 1/2 × 144 × ( 2 × 3.14 / 9 )

Area = 72 × 0.697

Area = 50.184

Area = 50.18 cm^2

Give the coordinates of point E.





REALLY HELP

Answers

Answer:

x coordinate =0

y coordinate =3

E(0,3)

Answer: (0,3)

Explanation: Sense it's not left or right  and "E" is up you don't put (1,3) you put (0,3).

A college entrance exam has a mean of 500. A small liberal arts college has two years of applications, each with 100 prospective students. The college conducts hypothesis tests to determine whether its applicants are significantly better than the general population of applicants. The first year of applicants has a mean of 510, whereas the second year of applicants has a mean of 505. Which sample will produce the largest probability value

Answers

Answer:

cjxbdjd xkdnkdkdns xkdnskzkns xkdnd d d d d d d d. d d dd d d d d. d d d d d d d d d d dd. d d

45 cm
60 om
What is the length of the hypotenuse?
centimeters?

Answers

Answer:

Answer:

Length of leg of triangle =  

Step-by-step explanation:

We are given a 45°-45°-90° triangle with hypotenuse measuring 18 cm.

Let us assume the following labeling of the diagram, as attached in the answer area.

The two angles here are equal to 45° so two sides of the triangle opposite to the equal angles will also be equal to each other i.e. it is an isosceles triangle.

i.e. The sides XY and YZ will be equal.

Let XY = YZ = x cm

It is known that in a right angled triangle, pythagorean theorem holds well.

As per pythagoream theorem:

Putting the values:

So, the length of leg of triangle =

Step-by-step explanation:

75cm
45squared times 60squared then take the square root of that answer

I need help on this question

Answers

Answer:

well first figure out the area of the parallelograms and divide the full area by the area of the pieces.

Step-by-step explanation:

'I'll mark you brainliest IF you get it correct"
PLEASE ANSWER

Answers

Answer:

0.6 feet/hr

Step-by-step explanation:

for each increase of 1 hour in x

there is an increase of 0.6 feet in y

The rate of change is ∆y/∆x

∆y/∆x = 0.6 feet/hr

there are 5 smiles Linda mad one a fawn haw many smiles are there now

Answers

Answer:

4

Step-by-step explanation:

5 smiles - 1 = 4 smiles

Answer:

I think there are still 5 smiles. I dont know

Guys I need help, this question is soo hard for me, I can't figure out what's 1+1 I LIKE HAVE NO IDEA

Answers

Answer:

i think its 3

Step-by-step explanation:

Answer:

2  : )

Step-by-step explanation:

1 + 1

step by step -

7 + 03 93 fj OIF - 93 85

9352095 jfdos - 039 = 0395

3209  39329 -- -  93590 u -f = 0ig

0uwgw0330 = - 0 935239 5-f p  '/ 0320 * 930 9 (09)(0 ))

0 ef= 0  -f- -r3- 32 3t

9t88 2- == 9 -3=t=-2t 99t3t 02itejgqht 9h = -0ei r]3ti

egwieg hwg h0f- e0 -g0 e-f9e0392t ehsf - - d hf kj 9999- )-(-0

jegj h- = 0-0 0 )(() -0102

uq93t -t0 u

wej9gt u-=== == --- - == - -- -= = = = -w= g-=g-w-e =

after years of solving

i have come to the conclusion

that the answer

is

2

your welcome.

50.26 to nearest hundredth

Answers

Answer:

it's already in the hundredths place

Step-by-step explanation:

.1 <- tens place

.01<- hundredths place

.001<-thousands place

Find the Value of X. Thanks.

Answers

Answer:

x = 90

Step-by-step explanation:

This will add up to 360 degrees in total

90 + 90 + 90 + 90 = 360 therefore x = 90 Hope that helps!

help me with this math question it is 4-36=x-180​

Answers

Answer:

4-36 = -32

-32 + 180 = 148

Therefore | x = 148

I hope I helped! :)

Answer:

148

Step-by-step explanation:

=> -32=x-180

=> -32+180=x

=> 148=x

Mark me brainliest :))

Choose the inequality that represents the following graph.


(Choice A)
A
x < -4x<−4x, is less than, minus, 4

(Choice B)
B
x \leq -4x≤−4x, is less than or equal to, minus, 4

(Choice C)
C
x > -4x>−4x, is greater than, minus, 4

(Choice D)
D
x \geq -4x≥−4

Answers

Answer:

c

my-step explanation:

Khan acadimy

The inequality that represents the following graph is C. x > -4

What is inequality?

Inequality is defined as the relation which makes a non-equal comparison between two given functions.

An inequality is a mathematical statement which compares two values or expressions using a relational operator, such as less than (<), greater than (>), less than or equal to (≤), greater than or equal to (≥), or not equal to (≠). Inequalities are used to show relationships between quantities or to express constraints or conditions.

The inequality that represents the graph;

x > -4x>−4x, is greater than, minus, 4

x > -4

Learn more about inequality ;

brainly.com/question/14164153

#SPJ2

find the value of x pls help me

Answers

Answer: 46°

Please ignore this, I do not have enough characters to share this answer unless I put a bunch of random stuff.

How do you Solve the equation 0.4(2x+12) = 3(0.2x -2) -4 *

Answers

Answer:

x=16

Step-by-step explanation:

   0.4(2x+12) = 3(0.2x -2) -4

[tex]Or,0.8x+4.8=0.6x+12-4\\Or, 0.8x0.6x=8-4.8\\Or,0.2x=3.2\\Or,x=\frac{3.2}{0.2} \\Ot,x=\frac{32}{2} \\Or,x=16[/tex]

What's a GOOD and EASY Genius hour project? Doesn't matter what it is

Answers

Answer:

Step-by-step explanation:

I think once I did something like is their life on other planets in our solar system. I started by defining life talking about what life needs, and you get the idea

Below is the normal distribution curve for height (inches) of NBA basketball players.

What is the standard deviation?

Answers

Answer:  standard deviation = 8

This is because mu = 75 is the mean, which is at the very exact center of this distribution. One space to the right is 83, which is 83-75 = 8 units away from the center. This distance is exactly one standard deviation. We can say "83 is one standard deviation larger than 75".

Or you could note the distance from 67 to 75 is also 8, because 75-67 = 8. Each tickmark represents stepping one standard deviation in distance.

4/7=x/12 round to the nearest tenth

Answers

Answer:

6.9

Step-by-step explanation:

I will use cross-multiplication for this problem:

[tex]\frac{4}{7} =\frac{x}{12} \\\\7x=48\\\\x=\frac{48}{7} \\\\x=6.857[/tex]

Rounded to tenths:

6.9

10
25°
Х
find value of
triangles

Answers

Answer:

x = 21.4

Step-by-step explanation:

Reference angle (θ) = 25°

Opposite = 10

Adjacent = x

Apply trigonometric function, TOA:

Tan θ = Opp/Adj

Tan 25 = 10/x

x*Tan 25 = 10

x = 10/Tan 25

x = 21.4450692 ≈ 21.4 (nearest tenth)

Select the correct answer.
Which inequality can this number line represent?
PLEASE HELP!!!!

Answers

Answer:

A, because x>3 or x<-4

Answer: D is the answer.

-4 < x < 3

Step-by-step explanation:

5x-2>-22 and 6x - 7 < 11

5x > -20 and 6x < 18

x > -4 and x < 3

Rearrange: -4 < x < 3 answer choice D

Find the measure of angle 1, 3, and 4.

Answers

Answer:

1) 60

3) 120

4) 60

Step-by-step explanation:

Angle 1 is supplementary to your known angle. Therefor, Angle 1 is 180 - 120

Angle 3 is supplementary to Angle 1 and equal to 120

Angle 4 is supplementary to Angle 3 and equal to angle 1.

I NEED HELP WITH GEOMETRY PLEASE HELPPPPPPPPPPPPPPPP

Answers

Answer:

need help too

Step-by-step explanation:

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