Help me plz :((( khan academy

Mathematics

2 answers:

Arada [10]3 years ago

8 0

Answer:

$x=30\\$

Step-by-step explanation:

balandron [24]3 years ago

5 0

Answer:

x = 30

Step-by-step explanation:

$\frac{45}{27} = 1.67\\$

1.67 x 18 = 30.06

round to the nearest whoeo number = 30

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Help? I forgot how to do this lol I have really bad memory

pashok25 [27]

$\dfrac{2}{3} \times \dfrac{3}{4} \times \dfrac{1}{2}$

Cancel out 2, the common factor for the numerator and denominator:

$= \dfrac{1}{3} \times \dfrac{3}{4} \times \dfrac{1}{1}$

Cancel out 3, the common factor for the numerator and denominator:

$= \dfrac{1}{1} \times \dfrac{1}{4} \times \dfrac{1}{1}$

Combine into single fraction:

$= \dfrac{1 \times 1 \times 1}{1 \times 4 \times 1 } = \dfrac{1}{4}$

$\bf \text {Answer = } \dfrac{1}{4}$

8 0

3 years ago

What is the height of the beach umbrella? Using your knowledge of sine, cosine, and tangent.

omeli [17]

Answer: 8 ft

Step-by-step explanation:

$sin\ 45^o=\dfrac{opposite \angle 45^o}{adjacent \angle 45^o}\\\\\\sin\ 45^o=\dfrac{8}{height}\\\\\\1=\dfrac{8}{height}\\\\\\height=8$