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MariettaO [177]
2 years ago
5

Please factorise 16p²-9q² for me​

Mathematics
1 answer:
kirill115 [55]2 years ago
7 0

Answer:

a ^ 2 - b ^ 2 = ( a + b ) ( a - b ) where a = 4p and b = 3q.

( 4p + 3q ) ( 4p - 3q )

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Mikaela placed a frame around a print that measures 10 inches by 10 inches. The area of just the frame itself is 69 square inche
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Answer:

1.5 in

Step-by-step explanation:

Let x be the width of the frame.

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Area of frame=69 square in

We have to find the width of the frame.

Side of frame=10+x+x=10+2x

Area of square=(side)^2

By using the formula

Area of print=10\times 10=100in^2

Area of frame with print=(10+2x)^2

Area of frame=Area of frame with print-Area of print

69=(10+2x)^2-100

(10+2x)^2=69+100=169

(10+2x)=\sqrt{169}=\pm 13

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Because Side is always positive.

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3 years ago
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Dafna1 [17]

Answer:

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Step-by-step explanation:

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a) Prob ( randomly chosen pill is red) = \frac{1}{3} \times \frac{1}{20} + \frac{1}{3} \times \frac{6}{20} + \frac{1}{3} \times \frac{2}{20}

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b)Prob ( 1 reds and 10 blue pilss) =\frac{1}{3} \frac{^1C_1\times ^{19}C_{10}}{^{20}C_{11}} + \frac{1}{3} \frac{^6C_1\times ^{14}C_{10}}{^{20}C_{11}} + \frac{1}{3} \frac{^2C_1\times ^{18}C_{10}}{^{20}C_{11}}

= \frac{1}{3} 1.106 = 0.368

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Answer:!!

Step-by-step explanation:!!

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Can you be more specific

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3 years ago
A waitress earned $73 for 6 hours of work. The total included $46 in tips. What was her hourly wage?
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