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Nuetrik [128]
3 years ago
8

SOMEONE PLEASE HELP TO BE MARKED THE BRAINLIEST

Mathematics
1 answer:
worty [1.4K]3 years ago
6 0

Answer: B

Step-by-step explanation:

Let's work this problem backwards. So, if he has y dollars left after spending 25% the second time or 3/4 of the money left. So, inverse it to get  \frac{4}{3}y. Then, do the same for 20% or 4/5, then 4/3y * 5/4 = 5/3y

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If B =1-6w2 and A = 1+ w, find an expression that equals 2B – A in<br> standard form.
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adelina 88 [10]

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Answer 2

Step-by-step explanation:

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3 0
3 years ago
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5) Establish the indentity (cot + tan ) sin = sec . Show each step to justify your conclusion.
katen-ka-za [31]

Answer:

Step-by-step explanation:

Identities : -

cot = cos / sin

tan = sin / cos

( cot + tan ) sin = sec

LHS

= ( cot + tan ) sin

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= ( ( cos sin ) / sin ) + ( sin² / cos )

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3 0
2 years ago
The area of the base of the oblique pentagonal pyramid is 50 cm^2 and the distance from the apex to the center of the pentagon i
Verdich [7]
The complete question in the attached figure

Part a) 
we know that
ABC is a right triangle
∠ACB=45°
AC=hypotenuse------> 6√2 cm
sin 45=AB/AC-----> AB=AC*sin 45----> AB=6√2*√2/2----> AB=6 cm

the answer part a) is
AB=6 cm

Part b) 
we know that
volume of the pyramid=(1/3)*Area of the base*height
area of the base=50 cm²
height=6 cm
so
volume of the pyramid=(1/3)*50*6----> 100 cm³

the answer part b) is 
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3 years ago
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Answer:

răspuns corect 2

Step-by-step explanation:

dami coroana te rog

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