The point (8,1) is on the line. (Remember the line continues in both directions forever.)

Which of the following equations has an infinite number of solutions?

trasher [3.6K]

Answer:

7x + 5 = 4x + 5 + 3x

5 0

3 years ago

HELP 30 POINTS!!!!!

Tamiku [17]

by pythagorean formula, the last side is √(61)

by cos rule

cos A

$= \frac{ {6}^{2} + 61 - {5}^{2} }{2 \times 6 \times \sqrt{61} } \\ = \frac{72}{12 \sqrt{61} } \\ = \frac{6}{ \sqrt{61} }$

A = 39.81

5 0

3 years ago

Tammy has 35 coins nickels and quarters. In all she has $4.15. How many of each kind of coin does she have

sergey [27]

The currency called the U.S dollar can be split into smaller forms or currency value of itself. Examples of these smaller forms are: dimes, nickels, pennies, and quarters.

Tammy has 23 nickels and 12 quarters.

Let's represent the number of:

Nickels = n

Quarters = q

It is important to note that the value of:

1 nickel = $0.05

1 quarter = $0.25

Tammy has 35 coins nickels and quarters. This statement can be represented using an algebraic equation below:

n + q = 35

This can be rewritten as :

n = 35 - q

In all, she has $4.15. This statement can be represented using an algebraic equation below:

0.05n + 0.25q = 4.15

We substitute 35 - q for n in the above equation.

0.05(35 - q) + 0.25q = 4.15

1.75 - 0.05q + 0.25q = 4.15

Collect like terms

- 0.05q + 0.25q = 4.15 - 1.75

0.2q = 2.4

Divide both sides by 0.2

0.2q/0.2 = 2.4/0.2

q = 12

Therefore, the number of quarters Tammy has is 12.

Solving for the number of nickels, we have the equation:

n = 35 - q

n = 35 - 12

n = 23

Therefore, the number of nickels Tammy has is 23.

To learn more, visit the link below:

brainly.com/question/13312288

8 0

3 years ago

Solve the linear equation. 2x+3(x-4)=(2x+3)

I am Lyosha [343]

Answer:

X=5

Step-by-step explanation:

Cancel equal terms remove parentheses.

Move the constant to the right.

Add the numbers.

Divide by 3 on both side. and X=5

Hope this helps

3 0

3 years ago

A taxicab service charges a flat fee of $7 plus an additional $1.25 per mile driven. Show the relationship between the total cos

Zarrin [17]

Answer with Step-by-step explanation:

We are given that

Flat fee of taxicab=$7

Cost of one mile=$1.25

1.We have to show that relationship between total cost and the number of miles driven.

2.We have to find independent variable and dependent variable

3.We have to write an equation to model the relationship and make a table to show the cost of 4 to 10 miles.

1.Let x be the number of miles driven by taxicab and total cost y of taxicab.

According to question

$y=1.25x+7$

This is a relation between number of miles drive and total cost.

2. Independent variable : It is that variable which does not depend on value of another variable .

Dependent variable : it is that variable which depend on value of another variable.

We can see that y depend on x and value of x does not depend on any value.

Therefore, y is dependent variable and x is independent variable.

Substitute x=4 then we get

$y=1.25(4)+7=$ $12

Substitute x=5 then get

$y=1.25(5)+7=$ $13.25

$y=1.25(6)+7=$ \$14.5

$y=1.25(7)+7=$ $15.75

$y=1.25(8)+7=$ $17

$y=1.25(9)+7=$ $18.25

$y=1.25(10)+7=$ $19.5

5 0

3 years ago