1. A collection of nickels and dimes has a value of $1.85. The value of
the dimes is $0.10 less than twice the value of the nickels. Which
system of equations can be used to find the number of nickels and
the number of dimes?

A. n+d = 185; n-d = 1
B. n+d = 185; 2n-d = 1
C. 5n+10d = 185; d = 2n - 1
D. 5n + 10d = 185; n - d = 1

Answer:

Parallel lines never intersect, but they must be in the same plane. The definition does not require the undefined term point, but it does require plane. Because they intersect, perpendicular lines must be coplanar; consequently, plane is not required in the definition.

Answer:

  24 - c

Step-by-step explanation:

The number of cupcakes Katie has left is the number she made minus the number she gave to McKinley.

__

  starting number - number given =

  24 - c . . . . . . . the number of cupcakes Katie has left

Answer:

The answers include

x + 2 =10

x - 4 = 4

3x = 24

Start Fraction x Over 8 End Fraction = 1

Step-by-step explanation:

x + 2 = 10; 8 + 2 = 10

x - 4 = 4; 8 - 4 = 4

3x = 24; 3(8) = 24

Start Fraction x Over 8 End Fraction = 1; 8/8 = 1

Equations with solution x = 8 are

x + 2 = 10,

x minus 4 = 4,

3x = 24,

Start Fraction x Over 8 End Fraction = 1

An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Given equations

x + 6 = 2

⇒ x = 2-6

⇒ x = -4

x + 2 = 10

⇒ x = 10 - 2

⇒ x = 8

x minus 4 = 4

x - 4 = 4

⇒ x = 4 + 4

⇒ x = 8

x minus 2 = 10

x -2 = 10

⇒ x = 10+2

⇒ x = 12

2x = 4

⇒ x = 4/2

⇒ x = 2

3x = 24

⇒ x = 24/3

⇒ x = 8

Start Fraction x Over 2 End Fraction = 16

x/2 = 16

⇒ x = 2(16)

⇒ x = 32

Start Fraction x Over 8 End Fraction = 1

x/8 = 1

⇒ x = 8(1)

⇒ x = 8

Hence, equations

x + 2 = 10,

x minus 4 = 4,

3x = 24,

Start Fraction x Over 8 End Fraction = 1

have 8 as solution.

Learn more about equation here:

https://brainly.com/question/1529522

#SPJ6

Answer:

$5.1 tip

Step-by-step explanation:

Answer:

Step-by-step explanation:

Yes correct.

Commutative property upon integer addition/subtraction

-3 + 2 = 2 - 3

Answer:

57.05

Step-by-step explanation:

Answer:

$57.05

Step-by-step explanation:

$8.15 x 7 = $57.05

Answer:  =  3 /2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

Babies of 33 week weighs relatively less than the babies of 41 week.

Explanation:

Z score is determined by

x-u/sd

A) For 33 Week baby

Given

Mean 2500

SD 800

Z score is

2600-2500/800 =0.125

B) For 41 Week baby

Given

Mean 2800

SD 425

x=2900

Z score is

2900-2800/425 =0.235

The z score depicts that the baby of 33 week or 41 week weighs more than the normal babies of same age group.

Thus, babies of 33 week weighs relatively less than the babies of 41 week.

Answer:

why do you need do give almost ALL your points when people and your one only question???????????

Answer:

The answer is D. 24

Step-by-step explanation:

there are 6 atoms of Carbon, 12 atoms of Hydrogen, and 6 atoms of Oxygen.

If you add them together: 6 + 12 + 6 +24

Answer:

I am pretty sure it is D if im not right correct me and if i am right plz mark brainliest

Step-by-step explanation:

Answer:

c. $634,000

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

His initial cost is $28,000. Every decade the value of the house doubles. We are in year 1975. Let's add 10 years (a decade) 1975+10= 1985. Since we added ten years, we will double $28,000 which is $56,000. Let's add 10 more years 1985+10 is 1995. Since we added 10 years more, we double $56,000 which is $112,000. Now we can still add 10 more years. Do the same thing you did for the first and second decades. You should get the year 2005 and $224,000. We can still add 10 more years to get to 2020. Our year will be 2015 and our total amount in dollar is $224,000² = $448,000. Since the value doubles every decade you ignore the 5.

Answer:

Algebra 1 is the second math course in high school and will guide you through among other things expressions, systems of equations, functions, real numbers, inequalities, exponents, polynomials, radical and rational expressions. ... Mathplanet hopes that you will enjoy studying Algebra 1 online with us!

Step-by-step explanation:

Step-by-step explanation:

= 6 / 8 × 2

= 0.75 × 2

= 1.5

plz follow me

Answer:

9.56? sorry if it is wrong <3

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

add up all the number's, the divide by how many number's that were used in the equation. in this case, four numbers.

Answer:

20.00% increase, lmk if you need an explaination

Answer: y= 7/6x-5

Step-by-step explanation:

The equations of parallel lines have the same slope or rates.

The equation of the line parallel to [tex]\mathbf{6x + 7y = -49}[/tex] is [tex]\mathbf{y = -\frac 67(x - x_1) + y_1}[/tex]

The equation is given as:

[tex]\mathbf{6x + 7y = -49}[/tex]

Make 7y the subject

[tex]\mathbf{7y = -6x-49}[/tex]

Make y the subject

[tex]\mathbf{y = -\frac{6}{7}x -7}[/tex]

A linear equation is represented as:

[tex]\mathbf{y =mx + b}[/tex]

Where m represents the slope.

So, we have:

[tex]\mathbf{m = -\frac 67}[/tex]

Parallel lines have the same slope.

So, the slope of the line is [tex]\mathbf{m = -\frac 67}[/tex]

The equation is then calculated as:

[tex]\mathbf{y = m(x - x_1) + y_1}[/tex]

Substitute [tex]\mathbf{m = -\frac 67}[/tex]

[tex]\mathbf{y = -\frac 67(x - x_1) + y_1}[/tex]

Hence, the equation of the line parallel to [tex]\mathbf{6x + 7y = -49}[/tex] is [tex]\mathbf{y = -\frac 67(x - x_1) + y_1}[/tex]

Read more about parallel lines at:

https://brainly.com/question/402319

Answer:

k-5

Step-by-step explanation:

Tanya need to learn how to cook \ (•◡•) /

Answer:

the twelve pack

Step-by-step explanation:

12 pack = $10.08 if u get the 6 pack for $5.34 and want to buy two pack it equals $10.68 if you want to save change buy the 12 pack

Answer:

a. 5ab                  b. 11x+15y

Answer:

a. 5ab

b. 11x+5y

Step-by-step explanation:

12ab-7ab they have the same variables, so you can just subtract

19x+5y-8x just rearrange it to 19x-8x+5y and subtract 19x and 8x

Answer:

2.5

Step-by-step explanation:

(I'm assuming you're doing this the same way I learned it, if not I'm sorry if it doesn't make sense)

[tex]\frac{2}{x}[/tex]=[tex]\frac{12}{15}[/tex]

Cross multiply

12x=30

Divide

x=2.5

This is just one way to do the problem. An easier way is to simplify the fractions.

[tex]\frac{2}{x}[/tex]=[tex]\frac{4}{5}[/tex]

You can either cross multiply or figure out that 2 is half of four and simply divide 5 by 2 which will also result in 2.5

Answer:

x=-5

Step-by-step explanation:

Answer:

I am not here in math yet, but I am going to try and solve this,

I think it is ... x= -5??

Step-by-step explanation:

Answer:

The amount is $338.2 and the interest is $13.20

Step-by-step explanation:

Answer:

x is less than or equal to 3

Step-by-step explanation:

The dot is a closed dot, which means that it is something or equal to, and the arrow is pointing down, which means less than. So the sign would be less than or equal to (sorry I don't have that sign on my computer). The dot is on three, so the inequality is x is less than or equal to 3.

Answer: Bridget was thinking of the number 2.95

Step-by-step explanation:

21.9 / 2 = 10.95

10.95 - 8 = 2.95