Maria bought 5 birthday cards from a store. The price of each card was the same. After she bought the cards, her account balance showed a change of -$15.95. What would
have been the change to Marta's account balance had she only bought 1 card from the store?
$3.19
B -$3.19
C $4.50
D -$4.50

Answer:

An arithmetic sequence is an infinately long set of numbers that increase by a certain amount(this amount is called the common difference) every number. for example, 1,2,3,4,5... is an arithmetic sequence with a common difference of one.

1: 0.46

2:0.4

3: -0.6

4: -0.85

5: 3.34

6: -1.77

7: 34/99

8: 3.16

9: -9/10

10: -17/20

11: -19/5

12: 2.3

13: 4/13

14: 8 7/11

1.a-6=13

a-6+6=13+6

a=19

2. x+4=-14

x+4-4=-14-4

x= –18

3.-10.1=w+5.3

-10.1-5.3=w+5.5-5.3

w= -15.4

4.-9.3=d- 3.4

-9.3+3.4=d -3.4 +3.4

d=-9.3+3.4

d= -5.9

5.q+5/9=5/6

q+5/9-5/9=5/6-5/9

q=5/18

Answer:

The system has of the equation has no solution

Thus,

NO SOLUTION!

Step-by-step explanation:

Given the system of equations

[tex]\begin{bmatrix}y=-6x+2\\ -12x-2y=4\end{bmatrix}[/tex]

Arrange equation variables for elimination

[tex]\begin{bmatrix}y+6x=2\\ -2y-12x=4\end{bmatrix}[/tex]

[tex]\mathrm{Multiply\:}y+6x=2\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:2y+12x=4[/tex]

so

[tex]\begin{bmatrix}2y+12x=4\\ -2y-12x=4\end{bmatrix}[/tex]

adding both equations

[tex]-2y-12x=4[/tex]

[tex]+[/tex]

[tex]\underline{2y+12x=4}[/tex]

[tex]0=8[/tex]

so

[tex]\begin{bmatrix}2y+12x=4\\ 0=8\end{bmatrix}[/tex]

0 = 8 is false, therefore the system has of the equation has no solution

Thus,

NO SOLUTION!

Please also check the attached figure.

Answer:

x + y = - 2

Step-by-step explanation:

The equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

Given

y - 2 = - (x + 4) ← distribute by - 1

y - 2 = - x - 4 ( add x to both sides )

x + y - 2 = - 4 ( add 2 to both sides )

x + y = - 2 ← in standard form

Answer:

Number Sense 3. ... Activity #2 - Solving Exponential Equations (self-checking) 5. ... #2: Used four of the star station C's problems in the Exponential Math Workshop. ... Please feel free to email me with any questions or join our office hour ... There are a variety of activities, most of which allow you to check your answers. 3.

Step-by-step explanation:

Answer:

150 cm^2

Step-by-step explanation:

Keep in mind that the dimensions of the cube are identical in 6 directions.  This means that the surface area of the bottom is 5 cm by 5 cm, yielding the area 25 cm^2.  The top has the same area, so considering top and bottom we get a total surface area of 50 cm^2.

Likewise, the total surface area of the sides together is 50 cm^2.  The total surface area of the front and back together is 50 cm^2.

Thus, the total surface area of the entirre cube is 3(50 cm^2), or 150 cm^2

Answer:

Weight On Venus: 144.67 lbs

Step-by-step explanation:

Weight on Venus= (Weight on Earth/9.81m/s2) * 8.87m/s2

Step-by-step explanation:

x/(x + 2) + 1/x = 1

x² + (x + 2) = x(x + 2)

x² + x + 2 = x² + 2x

x = 2.

Since x = 2 neither makes (x + 2) or x become 0, there are no extraneous solutions.

The answer is "The equation has 1 valid solution and no extraneous solutions." (C)

The true statement is (c) the equation has one valid solution and no extraneous solutions

The equation is given as:

[tex]\frac{x}{x + 2} + \frac 1x = 1[/tex]

Take LCM

[tex]\frac{x^2 + x + 2}{x(x + 2)} = 1[/tex]

Expand the numerator

[tex]\frac{x^2 + x + 2}{x^2 + 2x} = 1[/tex]

Cross multiply

[tex]x^2 + x + 2 = x^2 + 2x[/tex]

Subtract x^2 from both sides

[tex]x + 2 = 2x[/tex]

Collect like terms

[tex]2x -x = 2[/tex]

[tex]x = 2[/tex]

Hence, the equation has one valid solution and no extraneous solutions

Read more about solutions of equations at:

https://brainly.com/question/1397278

Answer:

Mai travels 2.5 meters in 1 second

Priya travels 2.2 meters in 1 second

Step-by-step explanation:

Try finding how many meters they travel in ONE second) Mai and Priya were on scooters.

For Mai

Mai traveled 15 meters in 6 seconds.

Hence,

6 seconds = 15 meters

1 second = x meters

Cross Multiply

6x = 15 meters

x = 15/6

x = 2.5 meters

Hence, Mai travels 2.5 meters in 1 second

For Priya

Priya travels 22 meters in 10 seconds.

Hence,

10 seconds = 22 meters

1 second = x meters

Cross Multiply

10x = 22 meters

x = 22/10

x = 2.2 meters

Hence, Priya travels 2.2 meters in 1 second

Answer:

u=47

Step-by-step explanation:

...................

The measure of angle U is 74 degrees.

In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle. The two rays are called the sides of an angle, and the common endpoint is called the vertex.

here, we have,

to determine the measure of angle U:

From the question, we have the following parameters that can be used in our computation:

△PQR ≅ △STU

If m ∠P = 62 degrees and m ∠Q = 45 degrees

The above parameters mean that

P  = S Q = T and R = U

So, we have

U = R = 180 - P - Q -- by the angles in a triangle theorem

So, we have

U = 180 - 61 - 45

   = 74

Evaluate

U = 74

Hence, the value of m ∠U is 74 degrees

Read more about angles at

brainly.com/question/7620723

#SPJ5

Step-by-step explanation:

f(x) = x/7

When x = 7, f(7) = 7/7 = 1.

Answer:

f(7) = 1

Step-by-step explanation:

We are given:

[tex]f(x)=\frac{x}{7}[/tex]

and we need to find f(7)

For finding f(7) we will put x = 7 in the given term [tex]f(x)=\frac{x}{7}[/tex]

Putting x = 7

[tex]f(x)=\frac{x}{7}\\Put\:x=7\\f(7)=\frac{7}{7}\\f(7)=1[/tex]

So, f(7) = 1

Answer:

0.2

Step-by-step explanation:

Answer:

-10

Step-by-step explanation:

the equation is in y=mx + b form so the b is the y-intercept so therefore it is -10

Answer:

35+35=70.....180-70=110....x=110

Answer:

k = ±6

Step-by-step explanation:

guess your question is 4k²–144 = 0??

4k² = 144

k² = 36

k²–36 = 0

(k+6)(k–6) = 0

k+6 = 0 | k–6 = 0

k = –6, k = 6.

Alternatively; k = ±6.

Answer:

12.5%

Step-by-step explanation:

Answer:

It would cost $ 408.04 to travel 2727 miles

Divide total miles by miles per gallon:

2,727 / 27 = 101 gallons.

Multiply total gallons by price per gallon:

101 x 4.04 = $408.04  Round as needed.

Answer:

8minutes per mile

Step-by-step explanation:

You ran 3 miles since 9am divide 24 by 3 to get 8 minutes

Answer:

n = 5 ; n = -1

Step-by-step explanation:

n - 3 = 2

When you transfer (-3) to the other side of the equation, it turns into (+3).

n = 2 + 3

Evaluate.

n = 5

n + 3 = 2

When you transfer (+3) to the other side of the equation, it turns into (-3).

n = 2 - 3

Evaluate.

n = -1

Answer:

x=5

x=1

Step-by-step explanation:

|x-3|=2

x-3=2

x-3=-2

x=5

x=1

Answer:

0

Step-by-step explanation:

It may say combine, but it`s subtraction soooo it`s 0.

Answer:

area=22 peremeter=19 14/15

Step-by-step explanation:

Answer:

22 and 19 14/15

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given

Amount of tax paid every month:

Step-by-step explanation:

3y+48=90

3y=90-48

3y=42

y=14 degree

12+2x+3x+90=180

5x+102=180

5x=180-102

5x=78

x=15.6 degree

Answer:yes it is right

Step-by-step explanation that’s right

Answer: pretty sure

Step-by-step explanation:

Please give me a brainliest even if im wrong im strugling please

Answer:

29/14

Step-by-step explanation:

Answer:

Locate the y-intercept on the graph and plot the point.

From this point, use the slope to find a second point and plot it.

Draw the line that connects the two points.

Step-by-step explanation:

Find the y intercept on the graph

Then from the points where the y intercept passes find the second point and graph it

Then draw the line where they connect

Answer:

my question is also this thanks

Answer:

y = -y

Step-by-step explanation

So since we know that the answer of this question turns out to be a positive, and 5 is a negative number, that means y is negative. Heres my reason why:

( write this down on your essay)

Since a negative number and another negative number added becomes a positive, y would be a negative number.

Therefore, It is true that y is a negative number

Answer:

gallons, teaspoon, quart, etc!

Step-by-step explanation: