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3 years ago

IL 8x-9 5x-3 What’s x

Mathematics

1 answer:

shepuryov [24]3 years ago

3 0

Step-by-step explanation:

8x-9=5x-3

Move any equation to the opposite side. I'll use the left this time

$8x - 8x - 9 + 9 = 5x - 8x - 3 + 9$

$0 = - 3x + 6$

move 6 to opp side

$- 3x = - 6$

$\frac{ - 6 = - 3x}{ - 3}$

$x = 2$

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(8.218+9.93)+(17.782+0.07)

Licemer1 [7]

First, using the order of operations(PEMDAS), you would solve what is inside the parenthesis.
<span>(8.218 + 9.93) + (17.782 + 0.07)
(</span>18.148) + (17.852)
18.148 + 17.852

Now, all you would have to do is add the two sums.
18.148 + 17.852 = <span>36
</span>
The answer would be 36.

I hope this helps!

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3 years ago

Kevin reads 5 pages in 15 minutes at this rate how many pages will he read in 45 minutes

Aleksandr-060686 [28]

Answer:

15 pages

Step-by-step explanation:

45/15=3

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3 years ago

Find the multiplicative inverse of 3 − 2i. Verify that your solution is corect by confirming that the product of

leonid [27]

Answer:

$\frac{3}{13} + \frac{2i}{13}$

Step-by-step explanation:

The multiplicative inverse of a complex number y is the complex number z such that (y)(z) = 1

So for this problem we need to find a number z such that

(3 - 2i) ( z ) = 1

If we take z = $\frac{1}{3-2i}$

We have that

$(3- 2i)\frac{1}{3-2i} = 1$ would be the multiplicative inverse of 3 - 2i

But remember that 2i = √-2 so we can rationalize the denominator of this complex number

$\frac{1}{3-2i } (\frac{3+2i}{3+2i } )=\frac{3+2i}{9-(4i^{2} )} =\frac{3+2i}{9-4(-1)} =\frac{3+2i}{13}$

Thus, the multiplicative inverse would be $\frac{3}{13} + \frac{2i}{13}$

The problem asks us to verify this by multiplying both numbers to see that the answer is 1:

Let's multiplicate this number by 3 - 2i to confirm:

$(3-2i)(\frac{3+2i}{13}) = \frac{9-4i^{2} }{13} =\frac{9-4(-1)}{13}= \frac{9+4}{13} = \frac{13}{13}= 1$

Thus, the number we found is indeed the multiplicative inverse of 3 - 2i

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3 years ago

HELLLLLLLP 5 STAR + THANKS PLEASE HELPPPP

Vanyuwa [196]

I believe the answer would actually be A) 0.239 because you would add up all the data from each section (So 32+20+25+30+18+15+58+45) and you get 243. Then you can set up the proportion 58/243 (since there are 58 juniors taking Spanish) and when you divide 58 by 243. you get the decimal 0.23868.... which rounds up to 0.239. Hope this helps!

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3 years ago

Read 2 more answers

Toucans and blue-and-yellow macaws are both tropical birds. The length of the toucan in the picture to the right is about two t

Sergeu [11.5K]

Answer:

The length of the blue-and-yellow macaw is 42 in

Step-by-step explanation:

Let

x ----> the length of the toucan in inches

y ----> the length of the blue-and-yellow macaw in inches

we know that