2
3
6 7 8 9 10
Question
Set up and solve a system of equations to solve the problem.
A jar contains n nickels and d dimes. There are 20 coins in the jar, and the total value of
the coins is $1.30. How many nickels and how many dimes are in the jar?
The jar contains
nickels and
dimes.

Answer:

D

Step-by-step explanation:

Answer:

9x and 4x

Step-by-step explanation:

Answer:

Step-by-step explanation:(a)

1.65p+1.36j=118.17 and p+j=79

We can say p=79-j and sub this value in first equation

1.65(79-j)+1.36j=118.17

130.35-1.65j+1.36j=118.17

-0.29=-12.18

j=42, p=79-j, p=79-42=37

(b)

1.65(37)=61.05 and 1.36(42)=57.12

Sanchez class earned more selling pies.

(c)

61.05-57.12=3.93

So Sanchez class made $3.93 more than Kelley class.

Some one already answered this, heres the link to the answer:

brainly.com/question/19662350?referrer=searchResults&exp=25-1

Answer:

Eastside=2.25+3g

Westside=1.75+2.5g

Cost difference=.5+.5g

Answer:

2338.27 is the answer 2338 if you round it

Step-by-step explanation:

Answer:x(3x

2

−1)

2

×3x

3

Step-by-step explanation:

Answer:

1, 2, 4

Step-by-step explanation:

Answer:

the unknown number is -5

Step-by-step explanation:

since 15 x 5 is 75 then 15 x -5 would be -75

Answer: x = -5

Step-by-step explanation: 15x = -75

Divide -75 by 15

Answer: 18

Step-by-step explanation:

First we need to solve for x to find the measure of the adjacent angle.

-6x+64 = 8x + 162

subtract 162 to leave x by itself

-6x- 98 = 8x

add 6x to both sides

-98 = 14x

now divide by 14

x = -7

Now solve one of the given equations to find the measure of the adjacent angle.

8(-7)+162

-56 + 162 = 106

Meaning the measure of angle 8 is 18

because they'll add up to 180(The measure of the line)

Answer:

measure of angle 8 is 16 6/7

Step-by-step explanation:

-6x+64=8x+62 because there is a transversal.

2=14x

x=2/14

so, now you have to find 8x+162. 163 1/7 degrees. (Plug in variables)

measure of the angle we just found + measure of angle 8 is 180 degrees.

(straight line definition) so 180-163 1/7= 16 6/7

measure of angle 8 is 16 6/7

Answer:

14/35

Step-by-step explanation:

ratios can be expressed in fractions, so if you put 14:35 into a fraction, it would be 14/35.

this fraction can be further simplified to 2/5 by dividing both 14 and 35 by 7.

i hope this helps! have a great day <3

Answer:

Yes, that is true.

Step-by-step explanation:

The bounded regions of the two inequalities do not overlap, so there is no solution set. However, the existence of parallel lines does not necessarily indicate that there is no solution, it just means that there is the possibility of no solutions.

Answer:

Step-by-step explanation:

145+15x>490. subtract 145 from both sides

15x>345, divide both sides by 15

x>23

So she will need to run for more than 23 weeks to reach her goal.

Answer:

11=DE

Step-by-step explanation:

3x-28+3x-30+x=33

7x-58=33

7x=91

x=13

3(13)-28

39-28=11

Answer:

it would be the same as 370-240 which equals 130

Step-by-step explanation:

Answer:

130

Step-by-step explanation:

give me brainliest  (aka the crown) :)

Answer:

25

Step-by-step explanation:

because you have to divide by 15's

Answer:

9 inches.

Step-by-step explanation:

To find out what d (distance) is, make a proportion of the values you know and d. This would be 15/67.5 = 2/d.

¹⁵/₆₇.₅ = 2/d

Variable d cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by d.

d * (¹⁵/₆₇.₅) = 2

Expand 15/67.5   by multiplying both numerator and the denominator by 10.

d * (¹⁵⁰/₆₇₅) = 2

Reduce the fraction ¹⁵⁰/₆₇₅  to lowest terms by extracting and canceling out 75.

d * (²/₉) = 2

Multiply both sides by ⁹/₂, the reciprocal of ²/₉.

d = (2 * 9)/2

Cancel out 2 and 2.

d = 9

The distance between the SLMS from the tide pools on the map is 9 inches.

Answer: 5/6.

Step-by-step explanation: . :)

Answer:

First Problem. 17x , 17 + x, and 7x + 10x

Second Problem. 2 + 12y, 2x1 + 2x6y

Step-by-step explanation:

Answer:

i think the answer would be C

Step-by-step explanation:

hope this helped

Answer:

first you need to see the total amount of big doge then take that amount and add 36 + 49 which equals 85 so that means their were 85 small dogs that sighned up to compete

Step-by-step explanation:

i might be wrong just sayin that it might be multiplication or adding but now you know how to do it i hope i helped you

Answer: 42.5

Step-by-step explanation:

Answer:

Step-by-step explanation:

a x times (-4)=20

x=-5

b m/6+8=2

m=-36

c 7y+11=-3

y=-2

Answer:

x = -4

y = -25

Step-by-step explanation:

Since one of the equations is already set with one variable as the subject ( y = 7x + 3) substitute that into the one below it:

9x - 2y = 14

9x - 2(7x + 3) = 14

9x - 14x - 6 = 14

-5x = 20

x = -4

Substitute this into one of the equations and solve for the other variable:

y = 7x + 3

y = 7(-4) + 3)

y = -28 + 3

y = -25

hope this helps!

Answer:

(- 4, - 25 )

Step-by-step explanation:

Given the 2 equations

y = 7x + 3 → (1)

9x - 2y = 14 → (2)

Substitute y = 7x + 3 into (2)

9x - 2(7x + 3) = 14 ← distribute and simplify left side

9x - 14x - 6 = 14

- 5x - 6 = 14 ( add 6 to both sides )

- 5x = 20 ( divide both sides by - 5 )

x = - 4

Substitute x = - 4 into (1) for corresponding value of y

y = 7(- 4) + 3 = - 28 + 3 = - 25

solution is (- 4, - 25 )

think of this as finding the area of a box. if each side of the box is one foot long, or 12 inches long, you need to multiply length times width to find the square inches. in this case it would look like:

A= 12in x 12in

12in x 12in = 144in^2

A = 144 in^2

therefore there are 144 square inches in one square foot.

Answer:

it is 144

Step-by-step explanation:

a did the test and i picked 12 and it was wrong and 24 is wrong n i cant belive i got it wrong :(

Answer:

The hike is 4.5 miles

Step-by-step explanation:

We divided 3 by 2 since 3 is 2/3 done

3 ÷ 2 = 1.5

So now we know what 1/3 is; 1.5

So now we multiply 1.5 by 3

1.5 × 3 = 4.5

Thus, the hike is 4.5 miles long