Guest #5493747

2 months ago

Uhhhh 2.60 per gallon in the US

Question

Roberto borrowed $438 from his friend Aaron. Aaron told him that he could pay him back at any time, but he was going to charge him a 3.5% interest rate monthly. It took Roberto 5 months to pay back Aaron. How much did he owe Aaron altogether?

Solution 1

**Answer:**

514.65

**Step-by-step explanation: no its right**

Question

Is y= -3x proportional or non proportional

Solution 1

**Hey there!**

**Yes, it is proportional, because it is in slope-intercept form. **

**Hope it helps and have a good day!**

Question

What is the equation of a line with a slope that is undefined and goes through the point (-1, 3)?

Solution 1

Y=3, could you make me the brainiest?

Solution 2

**Answer:**

if the slope of a line is undefined then the line is a vertical line so it cannot be written in slope- intercept form but it can be written in the form : x=a whereby "a" is a constant. now if the the line has a undefined slope and it passes through the point (-1, 3) then the equation of the line would be x= -1

**Step-by-step explanation:**

Question

Round to the hundredth 8.2548

Solution 1

**Answer:**

8.25

**Step-by-step explanation:**

Question

a circular railroad-crossing sigh has a radius of 15 inches. which measurement is closest to the area of the sigh in square inches?

Solution 1

**Answer:**

30

**Step-by-step explanation:**

Question

Find the 21st term in the arithmetic sequence,
3,7 11, 15, 19,

Solution 1

**Answer:**

83

**Step-by-step explanation:**

keep adding 4 til the 21st number.

Question

X+3y-2z=1 2x-y+2z=1 -x-4y+6z=2

Solution 1

X + 3y - 2z = 1

-x - 4y + 6z = 2

-------------------add

-y + 4z = 3

x + 3y - 2z = 1....multiply by -2

2x - y + 2z = 1

------------------

-2x - 6y + 4z = -2 (result of multiplying by -2)

2x - y + 2z = 1

-----------------add

-7y + 6z = -1

-y + 4z = 3 .....multiply by -7

-7y + 6z = -1

-----------------

7y - 28z = -21 (result of multiplying by -7)

-7y + 6z = -1

-----------------add

- 22z = -22

z = -22/-22

z = 1 <===

-y + 4z = 3

-y + 4(1) = 3

-y + 4 = 3

-y = 3 - 4

-y = -1

y = 1 <===

x + 3y - 2z = 1

x + 3(1) - 2(1) = 1

x + 3 - 2 = 1

x + 1 = 1

x = 1 - 1

x = 0 <==

so x = 0, y = 1, and z = 1

-x - 4y + 6z = 2

-------------------add

-y + 4z = 3

x + 3y - 2z = 1....multiply by -2

2x - y + 2z = 1

------------------

-2x - 6y + 4z = -2 (result of multiplying by -2)

2x - y + 2z = 1

-----------------add

-7y + 6z = -1

-y + 4z = 3 .....multiply by -7

-7y + 6z = -1

-----------------

7y - 28z = -21 (result of multiplying by -7)

-7y + 6z = -1

-----------------add

- 22z = -22

z = -22/-22

z = 1 <===

-y + 4z = 3

-y + 4(1) = 3

-y + 4 = 3

-y = 3 - 4

-y = -1

y = 1 <===

x + 3y - 2z = 1

x + 3(1) - 2(1) = 1

x + 3 - 2 = 1

x + 1 = 1

x = 1 - 1

x = 0 <==

so x = 0, y = 1, and z = 1

Question

6(x-4y) does anyone know this answer

Solution 1

**Answer:**

4

**Step-by-step explanation:**

Question

Solve the system of linear equations by using the substitution method. Descibe the process you used and the final answer. {5x+y=152x+y=12

Solution 1

**Answer:**

x=1 y=10

**Step-by-step explanation:**

5x+y=15

2x+y=12

y=12-2x

5x+12-2x=15

3x=3

x=1 Â

5+y=15

y=10

Question

The tip for excellent service in a restaurant is $25 for every $100 of the meal. What is the total bill (cost of meal plus tip) for a $75 meal? A. $25
B. $93.75
C. $125
D. $100

Solution 1

The answer is B. 93.75

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