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Lisa [10]
3 years ago
12

I really need help!!!

Mathematics
1 answer:
g100num [7]3 years ago
6 0
A = 6 x 9 = 54 square yard
1 bag covers 20 square yard
54/20 = 2.7 bags

answer is C. 
Farmer needs to purchase 3 bags
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What is the measure of A and C, A = (12x + 12), b = (15) C =(3x + 18)°
Gnoma [55]
3x + 18 + 12x + 12
15x + 20
6 0
2 years ago
I'm genuinely lost in any problems like this and my teachers are no help, I need help doing exponents in general, everything to
Stolb23 [73]

Answer:

See below.

Step-by-step explanation:

4)

So we have the expression:

(-6n^{-3})^2

We can use the power of a product property, where:

(ab)^n=a^n\cdot b^n

So:

=(-6)^2\cdot(n^{-3})^2

For the left, -6 squared is the same as -6 times -6. This equals positive 36.

For the right, we can use the power of a power property. The property says that:

(a^n)^k=a^{nk}

So:

(n^{-3})^2=n^{(-3)(2)}\\=n^{-6}

So, all together, we have:

=(-6)^2\cdot(n^{-3})^2\\=36n^{-6}

6)

We have the expression:

-\frac{3x^0}{x^4}

First, note that anything to the zeroth power (except for 0) is 1, thus, x^0 is also 1. Simplify:

=-\frac{3}{x^4}

And that's the simplest we can do :)

Notes for 6)

We <em>can</em> put the x^4 to the numerator. Recall that when you put an exponent to opposite side, you put a negative. In other words:

x^n=\frac{1}{x^{-n}}

And vice versa:

\frac{1}{x^{-n}}=x^n

So, we can write the above as:

=-\frac{3}{x^4}\\=-\frac{3}{x^{-(-4)}}\\=-3x^{-4}

However, traditionally, we want only positive exponents, so this wouldn't be correct.

4 0
3 years ago
Read 2 more answers
A taxi charges a flat fee of $5.00 plus $2.75 per mile. How much will it cost to travel 8.1 miles?
SIZIF [17.4K]

Answer:

27.275

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
O is the center of the circle. find the value of x. measure of angle o = 111 what is x
mixer [17]
<span>When a </span>radius<span> is drawn to a point of tangency, the </span>angle formed<span> is always a right angle.
Basically, the 2 tangents and the radii form a quadrilateral.
The 3 angles on the right are 90, 111 and 90 degrees.
Therefore, the fourth angle = 360 -90 -111 -90
Which equals 69 degrees.

</span>
7 0
3 years ago
Todd paid 24.32 to fill his gas tank. He paid 1.90 for each gallon of gas. How many gallons of gas did he buy?
elena-s [515]

To solve this equation we must use division.

We know we spent 24.32 to fill the gas tank.

And each gallon cost 1.90

We can divide and solve for how many gallons he bought.

24.32 ÷ 1.90 = 12.8


Todd has bought 12.8 gallons of gas.


Good Luck! <3


5 0
3 years ago
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