would this be 90? with steps please ​

Given:

Total number of coins (Quarters and dimes) = 60

Total amount = $12.45

To find:

The number of quarters and dimes.

Solution:

Let x be the number of quarters and y be the number of dimes.

We know that,

1 quarter = 0.25 dollar

1 dime = 0.10 dollar

Total coins: [tex]x+y=60[/tex]               ...(i)

Total amount: [tex]0.25x+0.10y=12.45[/tex]             ...(ii)

From (i), we get

[tex]y=60-x[/tex]          ...(iii)

Putting this value in (ii), we get

[tex]0.25x+0.10(60-x)=12.45[/tex]

[tex]0.25x+6-0.10x=12.45[/tex]

[tex]0.25x-0.10x=12.45-6[/tex]

[tex]0.15x=6.45[/tex]

Divide both sides by 0.15.

[tex]x=\dfrac{6.45}{0.15}[/tex]

[tex]x=43[/tex]

Putting x=43 in (iii), we get

[tex]y=60-43[/tex]

[tex]y=17[/tex]

So, the number of quarters is 43 and the number of dimes is 17.

Therefore, the correct option is b.

Answer:

A: 0.75 mill

step-by-step explanation:

15/20 = 75/100

0.75 = 75/100

Answer:

I think its 0.02

Step-by-step explanation:

I might be wrong

Answer:

0.72 mile

Step-by-step explanation:

Each block is 0.12, it asks what 6 blocks would be.

0.12 x 6 = 0.72 therefore the answer is D

Answer:

a d and e

Step-by-step explanation:

Answer:

A, D , E

Step-by-step explanation:

Just to concur with the person above this is the correct answer on edge

Answer:

B

Step-by-step explanation:

sin=opposite/Hypotonouse

80²+60²=hyp²

hyp=100

sinФ=60/100=3/5

Answer:

b. 3/5

Step-by-step explanation:

Using the pythagorean theorem, side AB is 100 m long.

Sine equals opposite over hypotenuse. In this case CB (60) is the opposite and AB (100) is the hypotenuse.

Sine for angle A = 60/100 = 3/5

Answer:

15

Step-by-step explanation:

50 times 30 over 100 you will get 15

Answer:

here are some websites you can use:

mathpapa .com

desmos .com (scientific calculator)

calculatorsoup .com

Answer:

[tex]\frac{31}{12}[/tex] more nuts would be used by Miguel then raisins

Step-by-step explanation:

The computation is shown below:

Nuts used [tex]= 5 \frac{1}{3} = \frac{16}{3}[/tex]

Raisins used [tex]= 2 \frac{3}{4} = \frac{11}{4}[/tex]

Now the difference between them is

[tex]= \frac{16}{3} - \frac{11}{4}\\\\= \frac{64 - 33}{12} \\\\= \frac{31}{12}[/tex]

Hence, [tex]\frac{31}{12}[/tex] more nuts would be used by Miguel then raisins

Answer:

6 greeting cards for 23.40

Answer:

C: 6 greeting cards for $23.40

Step-by-step explanation:

Answer:

slope= -1

Step-by-step explanation:

Answer:

face value = 2

Step-by-step explanation:

Face value = 2

Place value = 200

I hope im right!!

Hey!

So what it's asking for is the slope of the line. You can figure this out by finding two solid points on the line, such as (0,-1) and (4,2).

Knowing that these are two solid points, you can use the Rise/Run method to get the answer. The rise is how many units the slope rises (+) or falls (-) when getting to the next point. The run is how many units to the left or right it goes.

By following this, the slope is 3/4

Answer:

B) 9

Step-by-step explanation:

15 minutes = 3 miles

15x3 = 45

3x3=9

Answer: if the irrational sum of a plus the square root of b is the root of a polynomial with rational coefficients, then a minus the square root of b, which is also an irrational number, is also a root of that polynomial.

Step-by-step explanation: Look it up

Answer:

24 is an acute angle, thanks for the points, i need them :)

Step-by-step explanation:

Answer:

D. 7.99 perpound

Answer:

Step-by-step explanation:

(10^2-6^2) gives the hypotenuse of the smaller triangle therefore we get 8 units for that side.looking for the value of x

(8^2-3^2)=x^2

(64-9)=x^2

55=x^2

X=√55

Answer:

72

Step-by-step explanation:

The answer is 72 because my teacher gave it to me. I promise i'm legit, and I won't lie. This is the real answer, and if you choose 336, you're probably getting it wrong. That's from Math Olympiad.

Answer:

2.6, 2 3/5, 2 6/10

Step-by-step explanation:

2.6 as a fraction is 2 3/5. When you read the decimal 2.6, it is read as ''2 and 6 tenths. '' This can also be written as a mixed number of 2 6/10.

Answer:

A.Tropical savanna

Step-by-step explanation:

Because I just did the practice.

Answer:

A. tropical savanna

Step-by-step explanation:

I took the test and it was alright trust me please

Answer:

b is the answer I choose because it is going in-5

Answer:

B

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

You want me to let you in on a secret? There's a simple equation that you can use to solve any quadratic problem in a minute or two.

It's the quadratic formula

x =  [tex]x = \frac{-b +- \sqrt{b^2 - 4ac} }{2a}[/tex]

The +- means that you will do this two times, the first time you will do -b + sqrt(b^2-4ac), and the second time you will do minus that.

a is the coefficient of the first term in the expression, b is the second and c is the third.

so we get[tex]x = \frac{-(-10) +- \sqrt{(-10)^2 - 4(1)(24)} }{2(1)}[/tex] , which is the same as

[tex]x = \frac{10 + \sqrt{100 - 24(4)} }{2}[/tex]

and

x = [tex]x = \frac{10 - \sqrt{100 - 24(4)} }{2}[/tex]

The top part simplifies to [tex]\frac{10 + \sqrt{100 - 72} }{2} = \frac{10 + 6}{2} = 5[/tex], which is your answer.

The resultant force in the example presented is approximately 774 pounds.

The magnitude or size of a mathematical item defines whether it is larger or smaller than other objects of the same kind in mathematics.

Formally speaking, the size of an object is the visible outcome of an ordering—of the class of objects to which it belongs.

Consider the following scenario: the force is 10 N in the east.

The direction is indicated by "towards the east," while the force is indicated by "10."

Magnitude can be thought of as simply the "value" or "amount" of any physical quantity.

So, an object is under the influence of two forces with respective magnitudes of 300 pounds and 450 pounds and an angle of 60 degrees between them.

F₁=300 pounds, F₂=450 pounds and θ=60°

Fr=√300²+450²+2×300×450×cos60°

= √90000+502500+13500×0.5

= √90000+502500+6750

= √599250

= 774 pounds

Therefore, the resultant force in the example presented is approximately 774 pounds.

Know more about magnitude here:

https://brainly.com/question/24468862

#SPJ1

Answer: C. 653.91 pounds.

Step-by-step explanation: