<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B3%7D%20%20%5Cdiv%20%20%5Cfrac%7B2%7D%7B5%7D%20%20%2B%20%20%5Cfrac%7B4%7D%7

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2 years ago

B3%7D%20%20%5Ctimes%20%20%5Cfrac%7B2%7D%7B3%7D%20%20" id="TexFormula1" title=" \frac{7}{3} \div \frac{2}{5} + \frac{4}{3} \times \frac{2}{3} " alt=" \frac{7}{3} \div \frac{2}{5} + \frac{4}{3} \times \frac{2}{3} " align="absmiddle" class="latex-formula">

Mathematics

1 answer:

telo118 [61]2 years ago

6 0

Your answer will be
$\frac{140}{27}$

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I figured out the first part but not B and C

Liula [17]

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2 years ago

Q(a+1) - 2q(a) if q(x) = x²+3x+4

siniylev [52]

$q(x) = {x}^{2} + 3x + 4$

_________________________________

Step(1)

To find q(a) we just need to put a instead of x in q(x) function.

Let's do it...

$q(a) = {a}^{2} + 3a + 4$

Multiply sides by -2 :

$- 2q(a) = - 2( {a}^{2} + 3a + 4)$

$- 2q(a) = - 2 {a}^{2} - 6a - 8$

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Step (2)

To find q(a+1) we just need to put a+1 instead of x in q(x) function.

Let's do it...

$q(a + 1) = ({a + 1})^{2} + 3(a + 1) + 4 \\$

$q(a + 1) = {a}^{2} + 2a + 1 + 3a + 3 + 4 \\$

$q(a + 1) = {a}^{2} + 5a + 8$

_________________________________

Step (3)

$q(a + 1) - 2q(a) =$

${a}^{2} + 5a + 8 - 2 {a}^{2} - 6a - 8 = \\$

$- {a}^{2} - a = - a(a + 1)$

And we're done.

Thanks for watching buddy good luck.

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8 0

3 years ago

Please help me!! I need help

Setler [38]

Answer:

c=l/--a^2+b^2=l/--45^2+20^2≈49.24429

Step-by-step explanation:

l/-- mean square root

^ means squared/ exponent

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2 years ago

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HELP ME WITH THIS QUESTION PLEASE

lara [203]

Answer:

0.79

Step-by-step explanation:

all you really need to do is multiply your decimal (15.8) by your percent (5) so, you problem would look like 15.8(.05) (note it is .<em>0</em>5 because there need to be 2 decimal places) so, your answer is .79

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3 years ago

A woman making $1500 per month has her salary reduced by 10% because of sluggish sales. One year later, after a dramatic improve

UkoKoshka [18]

Answer:

after the raise, her salary is $1755 per month
this is a +17% change from her original salary

Step-by-step explanation:

The multiplier of her original salary to her reduced salary is ...

(1 - 10%) = 0.90

The multiplier of her reduced salary after her raise is ...

(1 +30%) = 1.30

The multiplier of her raised salary from her original salary is ...

(0.90)(1.30) = 1.17 = (1 +17%)

Her salary after the 17% raise is ...

1.17·1500/mo = $1755/mo

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3 years ago

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