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Nadusha1986 [10]
3 years ago
11

What is times positive 9 times negative 5

Mathematics
1 answer:
Ber [7]3 years ago
5 0
Negative 45 or -45 because different signs with multiplication are always negative
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Write 124 in scientific notation.
Artemon [7]

Answer:

Step-by-step explanation:

Write 124 in scientific notation.

Then, in scientific notation, 124 is written as 1.24 × 102. Actually, converting between "regular" notation and scientific notation is even simpler than I just showed, because all you really need to do is count decimal places.

6 0
3 years ago
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what if 7 dogs are in a room a man with a dog coms in and takes two and leaves his which has 3 pups how many dong are there
aleksandr82 [10.1K]

Answer:

8

Step-by-step explanation:

7 - 2 + 3 = 8

5 0
3 years ago
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Hi guys, can anyone help me with this triple integral? Many thanks:)
Crank

Another triple integral.  We're integrating over the interior of the sphere

x^2+y^2+z^2=2^2

Let's do the outer integral over z.   z stays within the sphere so it goes from -2 to 2.

For the middle integral we have

y^2=4-x^2-z^2

x is the inner integral so at this point we conservatively say its zero.  That means y goes from -\sqrt{4-z^2} and +\sqrt{4-z^2}

Similarly the inner integral x goes between \pm-\sqrt{4-y^2-z^2}

So we rewrite the integral

\displaystyle \int_{-2}^{2} \int_{-\sqrt{4-z^2}}^{\sqrt{4-z^2}} \int_{-\sqrt{4-y^2-z^2}}^{\sqrt{4-y^2-z^2}} (x^2+xy+y^2)dx \; dy \; dz

Let's work on the inner one,

\displaystyle\int_{-\sqrt{4-y^2-z^2}}^{\sqrt{4-y^2-z^2}} (x^2+xy+y^2)dz

There's no z in the integrand, so we treat it as a constant.

=(x^2+xy+y^2)z \bigg|_{z=-\sqrt{4-y^2-z^2}}^{z=\sqrt{4-y^2-z^2}}

So the middle integral is

\displaystyle\int_{-\sqrt{4-z^2}}^{\sqrt{4-z^2}}2(x^2+xy+y^2)\sqrt{4-y^2-z^2} \ dy  

I gotta go so I'll stop here, sorry.

7 0
3 years ago
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the sales rate in Houston is 8.255%. How much tax will be charged on a purchase of3 chairs at $61 a piece? Round your answer to
dedylja [7]
$61 x 3= $183

$183 x .08225= 15.11

$183 + 15.11= $198.11
6 0
3 years ago
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If a man is running at 2 kilometers an hour how long will it take him to reach his destination of 15 miles
NemiM [27]

It will take him 9 hours I think.

8 0
3 years ago
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