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myrzilka [38]
3 years ago
8

Work backwards to solve

Mathematics
1 answer:
leva [86]3 years ago
8 0

Answer: $14.93

Step-by-step explanation:

First, lets remove the shipping price: 51.65 - 3.50 = 48.15

Next, lets find the sales tax of the shirts: 48.15 x 0.07 = 3.37

Then, subtract that from the shirt price: 48.15 - 3.37 = 44.78

Finally, divide 44.78 by 3: 44.78 / 3 = 14.93!

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If 6x - 3y = -12 and 2x + 2y = -10, then y =
ahrayia [7]

Answer:

y=5

Step-by-step explanation:

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2 years ago
K=am+3mx solve for m
Otrada [13]
Assuming the variables are constants, you isolate m. So move am to the left. K-am=emx. Now divide ex. This gives you, m=(K-am/ex)
7 0
3 years ago
The number of users on a website has grown exponentially since its launch. After 2 months, there were 90 users. After 4 months,
grigory [225]

Answer:

10(3)^x

Step-by-step explanation:

The function contains the points (2,90) and (4,810). Use the general form y=abx to write two equations:

90=ab^2 and 810=ab^4

Solve each equation for a:

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Since a=a, set the other sides of the equations equal and solve for b.

90/b2=810/b4

Cross multiply, then divide and simplify as follows:

90b^4=810b^2

b^4/b^2=810/90

b^2=90

b^3

Now, use the value of b and the point (2,90) to find the value of a.

90=a(3^2)

a=10

So, substitute answers in original equation for a final answer of f(x)=10(3)^x.

8 0
3 years ago
Sin x = - 1/2<br> where (-360 &lt; x &lt; 360)
dimulka [17.4K]

Answer:

-30, 210 and 330 degrees

Step-by-step explanation:

Given the expression Sin x = - 1/2

x = arcsin(-1/2)

x = -30 degrees

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x = 180 + 30

x = 210 degrees

In the fourth quadrant

x = 360 - 30

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Hence the value of x within the interval -360 < x < 360 are -30, 210 and 330 degrees

3 0
3 years ago
Prime factorazation of 13​
Neporo4naja [7]

Answer:

  13 = 13

Step-by-step explanation:

13 is a prime, so 13 is its only prime factor.

4 0
3 years ago
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