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Marrrta [24]
2 years ago
5

I think of a number; take away 3 and then multiply by 7 to get the number 42. What was the number I started with?

Mathematics
1 answer:
torisob [31]2 years ago
3 0
Your answer should be “9” because 6x7=42
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Socket set for $36.00 with 40% off plus 8.25 % sales tax. How much do I owe?
OlgaM077 [116]

whatever% of anything is just (whatever/100) * anything.


so the socket set has a 40% off, what is 40% of 36?  well, is just (40/100) * 36, or 14.4, that's the discount, so the sale price is 36 - 14.4, or 21.6.


plus the 8.25% taxation, what is 8.25% of 21.6?  well, is just (8.25/100) * 21.6, or 1.782.

so the total price is 21.6 + 1.782, or 23.382, or about 23 bucks and 38 cents.

3 0
3 years ago
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What is the area of the triangle? ​
beks73 [17]
The area of a triangle is 180
4 0
2 years ago
What is equal to 3 * 3 * 3 * 3 * 3​
ladessa [460]

Answer:

243 or 3^5

Step-by-step explanation:

You can do the product by multiplying starting from the left.

3 * 3 * 3 * 3 * 3​ =

= 9 * 3 * 3 * 3

= 27 * 3 * 3

= 81 * 3

= 243

You can also change it to an exponential form.

3 * 3 * 3 * 3 * 3​ = 3^5

3 0
3 years ago
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A system of equations and its solution are given below.
Fittoniya [83]
Answer: Option <span>C. To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by -3. The solution to system B will be the same as the solution to system A.

First equation of system A multiplied by -3:
(-3)(x+6y=5)
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Sum of the second equation of system A and the first equation multiplied by -3:
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System B
x+6y=5
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4 0
3 years ago
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Find the value of x (sines and cosines)
Sav [38]
You would begin by choosing which trigonometric function to use. 
In this case, you would use sine.

Sine is opposite over hypotenuse. 
Opposite of the 35 degree angle is 18, and you want to find the hypotenuse which is x.

sin(35) = \frac{18}{x} (multiply x to both sides)
x sin(35) = 18 (divide sin(35) to both sides)
x = 31.38204...

So, therefore x = 31.38. I don't know what decimal point you're supposed to round to, so I'm gonna guess the hundredths place. :)
3 0
3 years ago
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