2 years ago

Help please i give thanks lol

Mathematics

1 answer:

maks197457 [2]2 years ago

7 0

What is question . .

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Simplify. (-5.12) - (-4.7) + (7.021) 6.79 6.601 -2.799

liq [111]

The answer is 6.601, and therefore, the second option.

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2 years ago

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Solve the system of equations:

Simora [160]

Answer:

x1=6 , x2=1

Step-by-step explanation:

If you have any questions about the way I solved it,don't hesitate to ask

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2 years ago

The axis of symmetry and vertex coordinates?

frutty [35]

I have attached the graph. Your axis is x=-4 and the vertex is (-4,-30)

Hope that helps

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9. Find the volume of the sphere if the radius is 12.4 in. Round to the nearest tenth.

d1i1m1o1n [39]

Answer:

V=7982.4 in

Step-by-step explanation:

V=4/3pi*r^3

V=4/3pi*12.4^3

V=4/3pi*1906.62

V=7626.48/3pi

V=2542.16pi

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2 years ago

The summation expression in the following series has an absolute value in it. Expand and evaluate the summation notation. What i

nikitadnepr [17]

$|3i-10|=\begin{cases}3i-10&\text{for }3i-10\ge0\\-(3i-10)&\text{for }3i-10$

We have that $3$ , which means $|3i-10|$ reduces to $3i-10$ when $i\ge4$ , or reduces to $10-3i$ when $i\le3$ .

So we can expand the summation as

$\displaystyle\sum_{i=1}^6|3i-10|=\sum_{i=1}^3(10-3i)+\sum_{i=4}^6(3i-10)$

Notice that the 10 contributes a total of 30 from the first sum, and -30 from the second sum, so those terms cancel, leaving us with

$\displaystyle3\left(\sum_{i=4}^6i-\sum_{i=1}^3i\right)=3((4+5+6)-(1+2+3))=3(15-6)=3(9)=27$

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2 years ago