BRAINIEST ANSWER PLEASE HELP OFFERING 30 POINTS!!!!

Lulu tells her little brother, Jack, that she is holding 20 coins all of which are dimes and quarters. They have a value of $4.10. She says she will give him the coins if he can tell her how many of each she is holding. Algebraically solve this problem for Jack when x is # of dimes and y is the # of quarters

Answers

Answer 1

Answer:

The answer is 14 quarters and six dimes

Step-by-step explanation:

-.1(D+Q=20)

.10D+.25Q=4.10    -.1D-.1Q=-2

                             .1D+.25Q=4.10

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

                            .15Q=2.10/.15(both sides)

Q=14 which leaves you needing 60 more cents so 6 dimes

Answer 2

Answer:

6 dimes and 14 quarters

Step-by-step explanation:

x+y=20

0.1x+0.25y=4.1

We can multiply all the numbers in the second equation by 20 to get 2x+5y=82.

Then isolate y to get y=20-x.

Substitute y for 20-x in equation 2 to get 2x+5(20-x)=82

2x+100-5x=82

-3x+100=82

-3x=-18

x=6, and y=20-6, which is 14.

So, Lulu has six dimes and 14 quarters.


Related Questions

The graph of quadratic function k is shown on the grid.
у
Which statements are best supported by the graph of k?
11
10
I. The x-intercept is located at(-3,0).
II. The coordinates of the y-intercept are(0,9).
III. The axis of symmetry 15 X=-3.
F I and II only
G I and III only
HII and III only
J
I, II, and III

Answers

Answer:

The answer is I, II, and III.

Step-by-step explanation:

Answer: I , II , III

Step-by-step explanation:

Does choosing a blue marble represent the complement event of choosing a red marble? Explain.

Answers

Answer:

No, the probability of choosing a red marble is not the complement of choosing a blue marble.

P(red) + P(blue) = 3/5, not 1.

The number of blue and red marbles does not add to the total number of outcomes.

There are other marbles besides red ones and blue ones.

Step-by-step explanation:

i got it right.

Answer:

The complementary event for choosing a red marble is choosing a blue or purple. The total number of marbles is 5. The probability of choosing a red marble is 1/5, and the complement would be 4/5. That is not the same as choosing a blue marble.


Can someone help me please is this correct?

Answers

Answer:

Subtraction.

Step-by-step explanation:

You Subtract 6 on both sides first and then you multiply the denominator which is 11 to the other side of the equal sign.

Evaluate (if possible) the six trigonometri
trigonometric functions of the real number t. (If an answer is undefined, enter UNDEFINED.)

t= 4π/3

Answers

Answer:

undefined

Step-by-step explanation:

Solve the system of linear equations below. 2x + 3y = 2 x + 6y = 4 A. x = 0, y = B. x = 2, y = - C. x = , y = D. x = 4, y = -2

Answers

Step-by-step explanation:

2x + 3y = 2

x + 6y = 4

2(4-6y) + 3y = 2

x= 4- 6y

8-12y + 3y = 2

x= 4- 6y

-9y =-6 =) y = 2/3

x= 4- 6*2/3 = 0

A.  x = 0, y = 2/3

11. Your company earns extra money by advertising other local businesses in their monthly newsletter . You charge $145 for a half -page ad , and $ 260 for a full - page ad in the newsletter . the company earned a total of 1650 from ad sales last month , how many full page , and how many half page ads did you sell ?

Answers

Answer:

six half page ads and three full page ads

Step-by-step explanation:

6*145= 870

3*260= 780

870+780= 1650

What is the measure of C

Answers

Answer:

60 degrees

Step-by-step explanation:

Since all sides are equal length, then all three angles are the same. In a triangle, the three angles should add up to 180. So 180 divided by 3 equals 60.

Answer:

C. 60

Step-by-step explanation:

60 x 3 = 180

How many 4-digit numbers are multiples of at least one of these two numbers: 2, 5

Answers

Answer:

There is a total of 5,400 4 digit numbers that are multiples of 2 and/or 5.

Step-by-step explanation:

Hope this helps! :)

(09.01 LC))
For f(x) = x2 and g(x)=(x-3)2, in which direction and by how many units should f(x) be
shifted to obtain g(x)? (5 points)

Answers

Answer:

3 units to the right

Step-by-step explanation:

Given f(x) then f(x + a) represents a horizontal translation of f(x)

• If a > 0 then a shift of a units to the left

• If a < 0 then a shift of a units to the right

Thus

g(x) = (x - 3)² is f(x) shifted to the right by 3 units

If you have a cubic polynomial of the form y = ax^3 + bx^2 + cx + d and lets say it passes through the points (2,28), (-1, -5), (4, 220), and (-2, -20) what would the coefficients a, b, c, and d equal? So confused, I'd greatly appreciate help! Thank you!

Answers

Step-by-step explanation:

Step 1:  Solve using the first point

(2, 28)

[tex]28 = a(2)^3 + b(2)^2 + c(2) + d[/tex]

[tex]28 = 8a + 4b + 2c + d[/tex]

Step 2:  Solve using the second point

(-1, -5)

[tex]-5 = a(-1)^3 + b(-1)^2 + c(-1) + d[/tex]

[tex]-5 = -a + b - c + d[/tex]

Step 3:  Solve using the third point

(4, 220)

[tex]220 = a(4)^3 + b(4)^2 + c(4) + d[/tex]

[tex]220 = 64a + 16b + 4c + d[/tex]

Step 4:  Solve using the fourth point

(-2, -20)

[tex]-20 = a(-2)^3 + b(-2)^2 + c(-2) + d[/tex]

[tex]-20 = -8a + 4b - 2c + d[/tex]

Step 5:  Combine the first and fourth equations

[tex]28 - 20 = 8a - 8a + 4b + 4b + 2c - 2c + d + d[/tex]

[tex]8 = 8b + 2d[/tex]

[tex]8 - 8b = 8b - 8b + 2d[/tex]

[tex](8 -8b)/2 = 2d/2[/tex]

[tex]4 - 4b = d[/tex]

Step 6:  Solve for c in the second equation

[tex]-5 + 5 = -a + b - c + d + 5[/tex]

[tex]0 + c = -a + b - c + c + d + 5[/tex]

[tex]c = -a + b + d + 5[/tex]

Step 7:  Substitute d with the stuff we got in step 5

[tex]c = -a + b + (4 - 4b) + 5[/tex]

[tex]c = -a + b + 4 - 4b + 5[/tex]

[tex]c = -a - 3b + 9[/tex]

Step 8:  Substitute d and c into the first equation

[tex]28 = 8a + 4b + 2(-a - 3b + 9) + (4 - 4b)[/tex]

[tex]28 = 8a + 4b - 2a - 6b + 18 + 4 - 4b[/tex]

[tex]28 - 22 = 6a - 6b + 22 - 22[/tex]

[tex]6 / 6 = (6a - 6b) / 6[/tex]

[tex]1 + b = a - b + b[/tex]

[tex]1 + b = a[/tex]

Step 9:  Substitute a, b, and c into the third equation

[tex]220 = 64(1 + b) + 16b + 4(-(1 + b) - 3b + 9) + (4 - 4b)[/tex]

[tex]220 = 64 + 64b + 16b + 4(-1 - b - 3b + 9) + 4 - 4b[/tex]

[tex]220 - 100 = 60b + 100 - 100[/tex]

[tex]120 / 60 = 60b / 60[/tex]

[tex]2 = b[/tex]

Step 10:  Find a using b = 2

[tex]a = b + 1[/tex]

[tex]a = (2) + 1[/tex]

[tex]a = 3[/tex]

Step 11:  Find c using a = 3 and b = 2

[tex]c = -a - 3b + 9[/tex]

[tex]c = -(3) - 3(2) + 9[/tex]

[tex]c = -3 - 6 + 9[/tex]

[tex]c = 0[/tex]

Step 12:  Find d using b = 2

[tex]d = 4 - 4b[/tex]

[tex]d = 4 - 4(2)[/tex]

[tex]d = 4 - 8[/tex]

[tex]d = -4[/tex]

Answer:  [tex]a = 3, b = 2, c = 0,d = -4[/tex]

Answer:

a = 3

b = 2

c = 0

d = -4

Step-by-step explanation:

Form 4 equations and solve simultaneously

28 = a(2)³ + b(2)² + c(2) + d

28 = 8a + 4b + 2c + d (1)

-5 = -a + b - c + d (2)

220 = 64a + 16b + 4c + d (3)

-20 = -8a + 4b - 2c + d (4)

(1) + (4)

28 = 8a + 4b + 2c + d

-20 = -8a + 4b - 2c + d

8 = 8b + 2d

d = 4 - 4b

Equation (2)

c = -a + b + d + 5

c = -a + b + 4 - 4b+ 5

c = -a - 3b + 9

28 = 8a + 4b + 2c + d (1)

28 = 8a + 4b + 2(-a - 3b + 9) + 4 - 4b

28 = 6a - 6b + 22

6a - 6b = 6

a - b = 1

a = b + 1

220 = 64a + 16b + 4c + d (3)

220 = 64(b + 1) + 16b + 4(-b - 1 - 3b + 9) + 4 - 4b

220 = 60b + 100

60b = 120

b = 2

a = 2 + 1

a = 3

c = -3 - 3(2) + 9

c = 0

d = 4 - 4(2)

d = -4

Please Answer ASAP!

Subtracting a number is the same as adding its opposite. Use this understanding to complete each of the equations below.

Enter numbers to evaluate ‐13−23.

‐13−23= ‐13 + ___

= ___

Enter numbers to evaluate ‐13−(‐23).

‐13−(‐23)= ‐13 + ____

= _____

Answers

Step-by-step explanation:

-13 - 23 = -13 + (-23)

= -36

-13 - (-23) = -13 + 23

= 10

Answer:

Step-by-step explanation:

-13 - 23 = -13 + (-23)

= -36

-13 - (-23) = -13 + 23

=10

What is the measure of ∠4?

Answers

I am pretty sure that four would equal 59 degrees because 60+61 equals 121 degrees and that line should in total equal 180. So you would do 180-121 which gives you 59.

Consider the cartesian equation of a circle, y=-2+- sqrt 36-(x-1)^2 , verses the parametric equations of the same circle: x=1+6 cos t y=-2+6sin t

Answers

What are the advantages of the parametric equations

Answer:

Step-by-step explanation:

Parametric equations shows the relation between a group of quantities by expressing the coordinates of points of a curve and function as one or more independent variables.

From  the question given; the advantages of parametric equations  given

x = 1 + 6 cos t

y= -2 + 6 sin t

are :

1) For a given value of the independent variable the parametric equation is used exactly one point on the graph

2) the parametric equations  have a finite domain

3) the parametric equation is easier to enter into a calculator for graphic

Answer:

That dude was wrong on one of them!

A, C, E

Create two different cylinders with the same volume.

Answers

Answer:

You didn't show us a photo or anything

Step-by-step explanation: Sorry i couldn't help

two consecutive integers whose product is 17

Answers

Answer:

8 and 9

Step-by-step explanation:

8 comes after 9 and 8 + 9 = 17

8 and 9 would be the answer

Writing What is the diameter of a circle with a circumference of 11.277 ft? Use pencil and paper.
The diameter is
ft.

Answers

I hope this helps you

Answer Choices:
x = 27
x = 25
x = 28
x = 26

Answers

Answer:

I think its 26,I think I'm not right,but still,I wanna help...

Help plz!!!!! I need help

Answers

Answer: J and K

Step-by-step explanation:

[tex]\sqrt{20}[/tex] is about [tex]4.472135[/tex]

Answer:

J and K

Step-by-step explanation:

√20=4.47

4.47 is almost in between J and K in the number line.

Hence, it's J and K.

please help me out brainliest for best

Answers

Answer:

A. 5^4 / 11^16

Explanation:

multiply the exponents

if you multiply the exponents, you will get a as an answer. so A is the answer.

What is the difference in the number of ads played on the country station and the number played on the talk station?


5


4


9


8

Answers

the answer is 4

hope this helps :)

The difference in the number of ads played by these stations is 4

The attached image is the image of a bar chart.

A bar chart is a graph that represents information using rectangular bars. The rectangular bars represent proportion of value

The bar chart has a x-axis and a y-axis. The x-axis shows the various categories while the y-axis shows the scale

The bar that represents country station has a value of 5

The bar that represents talk station has a value of 9

The difference in value : 9 - 5 = 4

To learn more about bar charts, please check: https://brainly.com/question/18092827?referrer=searchResults

Look at the picture:)

Answers

The height is 82, the centimeters are taken, and although most of the dots are on 84, it asks for the shortest height, so it will be 82.

Fine the slope of a line parallel to y=-2/5x+4/5

5/2

2/5

-5/2

-2/5

Answers

Answer:

-2/5

Step-by-step explanation:

Parallel lines have the same slope to each other. So if one line has a slope of -2/5, the line parallel to it will also have a slope of -2/5.

Hope this helps!

Answer:

-2/5

Step-by-step explanation:

The slope of the parallel line is going to be the same as the original line.

What did the use of atomic bombs during World War II lead to?

A ban on all nuclear weapons for all developed countries for years in the future
The need for a global regulatory body to monitor the use of nuclear weapons
A sharing of all nuclear weapons technology to make all countries equal
An arms race between the United States and Soviet Union
Question 2(Multiple Choice Worth 5 points)


Which of the following is a common argument against the U.S. decision to drop the atomic bomb?

The study of the effect of atomic weapons allowed nuclear power to be used as energy.
The use of the atomic bomb avoided additional loss of life for the Allies.
The Japanese were more willing to surrender than the U.S. military thought.
The dropping of the atomic bomb would act as a deterrent to future wars.
Question 3(Multiple Choice Worth 5 points)


What is the best explanation for why the United States decided to target Hiroshima?

It was a center of communications, military command, and supply point for the Japanese army.
It would have few casualties because it was nearly destroyed by previous bombings.
It was a religiously and culturally significant city for the Japanese monarchy.
It was a city with many family connections to Emperor Hirohito and military leaders.
Question 4(Multiple Choice Worth 5 points)


Many Americans approved of the use of atomic weapons on Japan despite their destructive power because

they believed it would shorten the war and ultimately save American lives
they were eager to see if this new technology was effective in preventing wars
they believed that the atom bomb would cause no more damage than regular bombs
they were told that it was the only certain way to defeat the militant Japanese empire

Answers

1. An arms race between the United States and Soviet Union

2. The use of the atomic bomb avoided additional loss of life for the Allies.

3. It was a center of communications, military command, and supply point for the Japanese army.

4. they believed it would shorten the war and ultimately save American lives

5. if i could get brainliest that would be great

Which graph represents the function f(x) =1/3 |x|?

Answers

Step-by-step explanation:

f(x) = 1/3|x|

then

f(x) = 1/3x  , if x ≥ 0

and

f(x) = -1/3x  , if x ≤ 0

the slope of f(x) = 1/3x is 1/3

the slope of f(x) = -1/3x is -1/3

this two above conditions apply on to the fourth graph to the right.

Help me asap I’m turning this in late please hep

Answers

Answer:

The answer is 27 If not please correct me!

Answer:

27

Step-by-step explanation:

You need to plug 100 in for m and multiply that. Then you need to add 7 to 20 to get your answer.

Hope this help.

Lines a and b are parallel. Line c is transversal. Which statement is true?
Help

Answers

Answer:

D, because they are vertical.

Step-by-step explanation:

Without doing it mathematically, if you look at the graph and match all pairs of angles with their statements, you can check and see if they look equal. Of course, if you were to do it mathematically, you would need to know the vocabulary.

NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

C. l only

Step-by-step explanation:

The McPhearson family went fishing. They caught 7 fish. The weights of the fish were 15, 16, 15, 13, 19, 20, and 21 pounds. What is the mean weight of these fish? Answer options with 4 options A. 15 B. 16 C. 17 D. 18

Answers

Answer:

C. 17

Step-by-step explanation:

The mean weight can be calculated by adding the numbers 15 + 16 + 15 + 13 + 19 + 20 + 21 divided by the number 7, which is the amount of numbers you just added.

(15 + 16 + 15 + 13 + 19 + 20 + 21)/7

the outcome = 17 which corresponds to answer C.

Answer: The answer is C.17

Step-by-step explanation:

WILL MARK BRAINLIEST!!! OWO

Answers

Answer:

G equilateral

Step-by-step explanation:

scalene = all the sides of the triangle are not equal

isosceles = two sides of the triangle is equal

Answer should be equilateral = All the sides of the triangle is equal.

F H J are not describing any triangle.

Answer:G equilateral

Step-by-step explanation:

^///^

Which is an equation for the parabola that has a vertex (6,-3) and passes through the point (2,-2)

Answers

Answer:

c

Step-by-step explanation:

Answer:

The Correct Answer is in fact C : x= -4y^2 -24y -30

Step-by-step explanation:

If you look at the image I attached you can see that C is the only one touching those point

Don't forget to like :)

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