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Juliette [100K]
4 years ago
13

I NEED HELP ASAP!!!!!!!!!!!!

Mathematics
1 answer:
Ad libitum [116K]4 years ago
4 0
1. 2(4.5) + 0.5 = 9.5

2. 5(3) - 2 = 13

3. 2.5(18) + 0 = 45
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Which term shows a product of a number and a variable? 5 + 6x - 7 + 4 <br> A. 5 B. 6x C. -7 D. 4
r-ruslan [8.4K]
A variable is just a letter or symbol that symbolizes a number

Therefore, B. 6x is a number multiplied by a letter (product).
7 0
3 years ago
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What is 9+1<br> no take away<br> Yes<br> please help long answer pls and ty bye bye
Kay [80]

Answer:10

Step-by-step explanation:

4 0
3 years ago
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Frank owns an entire city block, which happens to be a perfectly square piece of land. One corner of the block is in the interse
Helen [10]
So originally, let's say the width of Frank's land was x feet.

The area of his land was therefore x \times x, or x^2, as his land was square.

The width of his land then increased by 3 feet, and the height decreased by 3 feet.

So the new area of Frank's land is:

(x+3)(x-3)\\=x^2+3x-3x-9\\=x^2-9

So the new land is now 9 square feet smaller, so it is not a fair deal for Frank.

Hope this helps :)
5 0
3 years ago
The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the
GuDViN [60]
Given:
r = radius = 4
h = height = 12
dr = error in radius = 0.2

What we want to find
dV = error in volume

Use the derivative to find the differential dV
V = pi*r^2*h
dV/dr = d/dr[ pi*r^2*h ]
dV/dr = 2pi*r*h
dV = 2pi*r*h*dr
dV = 2pi*4*12*0.2
dV = 19.2pi

So if the error in measuring the radius is +-0.2 inches, then the error in the cylinder volume is +-19.2pi cubic inches (we either measure the volume to be 19.2pi cubic inches too big, or 19.2pi cubic inches too small)

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

Final Answer: Plus or minus 19.2pi cubic inches

Note: your teacher may want you to drop the "plus or minus" part
5 0
3 years ago
Help me find x please!
lana [24]
X should equal 100.  Hope this helps :)
4 0
3 years ago
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