Solve for x: 7x + 15 = 38

twenty-three sevenths
fifty-three sevenths
23
53

Answer:

Train B is traveling faster

Step-by-step explanation:

From the picture, we want to know which train is traveling faster

We can know this by knowing the speed of the trains

Mathematically;

speed = distance/time

Train A

12.5 m in 1 second

speed = 12.5/1 = 12.5 m/s

Train B

100 m in 4 seconds

speed = 100/4 = 25 m/s

So train B is traveling faster

This is because it covered a distance of 100 m in 4 seconds as opposed to train A which covered a distance of 12.5 m

in 1 second

Answer:

1) A = 80

2) A = 30

Step-by-step explanation:

1) x+50 + 80 + x + 70 = 180

2x+120 = 180

2x = 60

x=30

A = (30) + 50

A = 80

2) x+40 + x+90 + (180-110) = 180

x+40 + x+90 + 70 = 180

2x + 200 = 180

2x = -20

x = -10

A = (-10) + 40

A = 30

Answer:

40 %

Step-by-step explanation:

40% off - 31.20/52 = .60 which means a 40% discount

hope this helps! :)

Answer:

41.309 kg, 41.32 kg, 41.236 kg

Step-by-step explanation:

I think these are the correct answers.

Answer:

25.7

Step-by-step explanation:

Answer:

Line 3

Step-by-step explanation:

It bends okkkkkkkkkkkkkkk

Answer:its actually yes, yes, no

Step-by-step explanation:

I have the answer bc it showed the answer on my test right after

Answer:

188

Step-by-step explanation:

3(8^2)-4

3(64)-4

192-4

188

Work Shown:

x = 2 is the input

y = 2x+1

y = 2(2)+1

y = 4+1

y = 5 is the output

 A function is a relationship between inputs where each input is related to exactly one output.

The value of the output of function 2x + 1 when x =2 is 5.

A function is a relationship between inputs where each input is related to exactly one output.

Example:

1.

f(x) = 3x + 2

x = 1,

f(1) = 3x1 + 2 = 3 + 2 = 5

Input = 1

Output = 5

2.

g(x) = 4x + 2

For x = 1, g(1) = 4x1 + 2 = 4 + 2 = 6

Input = 1

Output = 6

We have,

Function:

2x + 1

Input = 2

The value of the output of the function 2x + 1 when x =2:

= 2x + 1

= 2x2 + 1

= 4 + 1

= 5

Thus,

The value of the output of function 2x + 1 when x =2 is 5.

Learn more about functions here:

https://brainly.com/question/28533782

#SPJ2

Answer:

Solution : Number . In standard form we solve power of 10. Therefore, in standard form is 0.3643

Step-by-step explanation:

hope it helps pls mark as brainliest

Answer:

0.3643

Step-by-step explanation:

Answer:

[tex]3\sqrt7[/tex]

Step-by-step explanation:

This is because you can split 63 into two numbers, [tex]\sqrt{9}[/tex] and [tex]\sqrt{7}[/tex]. When you simplify [tex]\sqrt{9}[/tex] turns into 3 but [tex]\sqrt{7}[/tex] will not simplify further so it will be [tex]3\sqrt{7}[/tex].

Answer:

The Arch is 630 ft tall

Step-by-step explanation:

Answer:

i think it 180

Step-by-step explanation:

Answer:

Option B

Step-by-step explanation:

From the figure attached,

Circle D is drawn with the radius = DG or DE

A tangent FG has been drawn at a point G on the circle from an external point F.

By theorem,

Radius of a circle is always perpendicular to the tangent, drawn to the circle from an external point.

Therefore, DG ⊥ FG.

Option B will be the correct option.

Answer: B

Step-by-step explanation: good luck!:)

Answer:

your supposed to flip the sign for the less than or greater than sighs when dividing by a negative.

Step-by-step explanation:

-4x←20

x→-5

Answer: 1

Step-by-step explanation:

The y axis goes up and down. The slanted line meets the Y axis at 1.

Answer:

1

Step-by-step explanation:

the y intercept would be 1 because that’s where the line passes through the y axis. A more mathematical term would be, the y intercept is (0,1)

Answer:

Increasing

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

The intercept is the point where the graph crosses over the y-axis

I would say line graph

because many charts and graphs that use time, like years, use line graphs.

One example of this is the stock market, the stock market uses line graph, and I think the best option here is a line graph.

Answer: Line Graph

A line graph would best represent this data because you recording change over time (results from 1972-2008).

Answer:

121 1/4

Step-by-step explanation:

The stock market went up 30 1/2 points, then down 90 3/4 points. The total change is equal tor 121 1/4.

Answer:

[tex] \frac{13}{35} [/tex]

Step-by-step explanation:

To add or subtract two or more fractions from each other, the denominators have to be the same. To make the denominators the same, we should find the least common multiple of 5 and 7. The least common multiple of 5 and 7 is 35. 5 should be multiplied with 7 to get 35 and 7 should be multiplied with 5 to get 35 (with both numerators).

[tex] \frac{4}{5 } - \frac{3}{7} [/tex]

[tex] \frac{4 \times 7}{5 \times 7} - \frac{3 \times 5}{7 \times 5} [/tex]

[tex] \frac{28}{35} - \frac{15}{35} [/tex]

[tex] \frac{13 }{35} [/tex]

When subtracting, only subtract the numerators (the denominators are kept as is).

Answer:

the answer is 13/35

Step-by-step explanation:

Answer:

y= -2x -5

Step-by-step explanation:

Slope-intercept form:

y= mx +c, where m is the slope and c is the y-intercept.

Parallel lines have the same slope.

Thus, to find the value of the slope of the line, we have to find the slope of the given line.

y= -2x -1

Since the coefficient of x is -2 and the equation is already in slope-intercept form, the slope of the given line is -2.

Substitute m= -2 into the equation:

y= -2x +c

To find the value of c, substitute a pair of coordinates.

When x= -2, y= -1,

-1= -2(-2) +c

-1= 4 +c

c= -1 -4 (-4 on both sides)

c= -5

Thus, the equation of the line is y= -2x -5.

Step 1: Add 3x to both sides to get 4 = 3x - 1

Step 2: Add 1 to both sides to get 5 = 3x

Step 3: Divide by 3 on both sides to get 5/3 = x

Answer:

x = [tex]\frac{5}{3}[/tex]  or [tex]1 \frac{2}{3}[/tex]

Step-by-step explanation:

Isolate the variable x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction.

~

Step 1:

Subtract 4 from both sides of the equation:

4 (-4) - 3x = -1 (-4)

-3x = -1 - 4

-3x = - 5

Step 2:

Divide -3 from both sides of the equation:

(-3x)/-3 = (-5)/-3

x = -5/-3

x = 5/3

x = 1 2/3

Answer:

A. 1.88

Step-by-step explanation:

In less fancy terms, a constant of proportionality is essentially a rate of change - or more specifically, a unit rate.

It's the number we multiply our independent variable by to get the y. You can find this by simply dividing the y value by the x value!

Let's choose the first order pair (2, 3.76).

[tex]3.76 \div 2 = 1.88[/tex]

We can check that this table IS constant by doing the same with the other values... we should always get 1.88!

[tex]7.52 \div 4 = 1.88\\9.40 \div 5 = 1.88\\15.04 \div 8 = 1.88[/tex]

This is true for all values - which means our constant is 1.88

Hope I was of assistance! #SpreadTheLove<3

Answer:

Step-by-step explanation:

Bill = 55% of the entire collection

Bob = 45% of the entire collection (Since we know 100 - 55 = 45)

We are also told that Bob received 360 cards.

This means that 45% = 360 cards.

First step is to find how many cards is 1%. To do this, divide 360 by 45.

1% of entire collection = [tex]\frac{360}{45} = 8[/tex] cards

This means that since Bill gets 55% of the entire collection, you multiply 8 by 55.

Bill = 8 x 55 = 440 cards.

Answer:

440

Step-by-step explanation:

Answer:

both

Step-by-step explanation:

Answer: Its Both looked it up

Step-by-step explanation:

Answer:

slope of perpendicular line is -1/4

Step-by-step explanation:

slope of standard equation of line that is ax+ by = c is

slope m = -a/b

given equation is

12x – 3y = 81

comparing it with ax+ by = c

a = 12

b = -3

thus

slope of given line = -12/-3 = 4

we also know product of slope of two perpendicular line is -1

let the slope of other line be m

thus,

product of given line line and perpendicular line is -1

4*m = -1

m = -1/4

Thus,

slope of perpendicular line is -1/4

Answer:

(-∞,∞)

Step-by-step explanation: