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3 years ago

Write the sentence as an equation. 328 is the quotient of 36 and b FAST

Mathematics

1 answer:

OleMash [197]3 years ago

6 0

$328 = \dfrac{36}{b}$

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Solve the inequality 2x>30+5/4x

insens350 [35]

Answer:

Step-by-step explanation:

$2x > 30+\frac{5}{4x} \\2x-\frac{5}{4x} > 30\\\frac{8x^2-5}{4x} > 30\\case~1\\if~x > 0\\8x^2-5 > 120x\\8x^2-120x > 5\\x^2-15x > \frac{5}{8} \\adding~(-\frac{15}{2} )^2~to~both~sides\\(x-\frac{15}{2} )^2 > \frac{5}{8}+\frac{225}{4} \\(x-\frac{15}{2} )^2 > \frac{455}{8} \\x-\frac{15}{2} < -\sqrt{\frac{455}{8} } \\x < \frac{15}{2}-\sqrt{\frac{455}{8} } \\or~x < 0\\rejected~as~x > 0$

$x-\frac{15}{2} > \sqrt{\frac{455}{8} } \\x > \frac{15}{2} +\sqrt{\frac{455}{8} }$

case~2

$if~x < 0\\8x^2-5 < 120x\\8x^2-120x < 5\\x^2-15x < \frac{5}{8} \\adding~(-\frac{15}{2} )^2\\(x-\frac{15}{2} )^2 < \frac{5}{8} +(-\frac{15}{2} )^2\\|x-\frac{15}{2} | < \frac{5+450}{8} \\-\sqrt{\frac{455}{8} } < x-\frac{15}{2} < \sqrt{\frac{455}{8} } \\\frac{15}{2} -\sqrt{\frac{455}{8} } < x < \frac{15}{2} +\sqrt{\frac{455}{8} } \\but~x < 0\\7.5-\sqrt{\frac{455}{8} } < x < 0$

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2 years ago

50 POINTS!!! Macy's has a sale on winter coats during the month of February. A coat is on sale for $175. This is 22% off the ori

klio [65]

1. First consider the unknown original price as 'x'.

2. Then consider the rate of discount.

3. To find the actual discount, multiply the discount rate by the original amount 'x'.

4. To find the sale price, subtract the actual discount from the original amount 'x' and equate this to given sale price.

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3 years ago

PLS HELP I NEED ANSWER ASAP!<br> PPLS BE RIGHT!

Luba_88 [7]

Answer:

They used 6 vans and 3 buses

Step-by-step explanation:

x + y= 9

13x + 40y= 198

x= 9 - y

13(9 - y) + 40y= 198

117 - 13y + 40y= 198

27y= 81

y= 3

9-3= 6

4 0

3 years ago

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If √3 = 1.73 to 2 dp, find the value of 4/√3 to 2 dp

Mashutka [201]

Answer:2.31

Step-by-step explanation: considering that the root of 3 has already been given. Will just divide 4 by the root of 3 which is 1.73. and the answer it gives is 2.31

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3 years ago

Which could be the length of Side KL?

Kay [80]

I don’t know the answer to that one sorry

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