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ollegr [7]
3 years ago
10

23 is 85% of what number?

Mathematics
1 answer:
Luda [366]3 years ago
3 0
23 is 85% of 27.05882353
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If there are 135 revolutions in 180 seconds how many revolutions in 40 seconds?
BartSMP [9]

Answer:

53.3 rotations

Step-by-step explanation:

135/180=x/40

solve by cross multiply

7 0
2 years ago
How do you write 2/20 as a percentage ​
Brut [27]

Answer:2/20 =

2 ÷ 20 =

0.1 =

0.1 × 100/100 =

0.1 × 100% =

Step-by-step explanation:

google

7 0
3 years ago
What is the answer to this somebody!!!
Fed [463]

Use the geometric mean for right triangles as the sides are related to the hypotenuse. 30 - 6 = 24. We need that for our proportion. \frac{24}{x}=\frac{x}{30}. We cross-multiply to get x^2=720. Taking the square root of both sides gives us that x=12\sqrt{5}, the second choice above.

7 0
3 years ago
Need help on this quickly! i have 2 more questions like this that i will post if it lets me.
AfilCa [17]

Answer:

x=5 , y=12

Angle 3=140

Angle 4=100

4 0
2 years ago
Plz help me with this
Setler79 [48]

Answer:   x = 8

                (the correct answer was not provided as an option)

<u>Step-by-step explanation:</u>

log_2(x-6)+log_2(x-4)=log_2(x)\\\\log_2[(x-6)(x-4)]=log_2(x)\\\\(x-6)(x-4)=x\\\\x^2-10x+24=x\\\\x^2-11x+24=0\\\\(x-3)(x-8)=0\\\\x=3\qquad x=8\\\\\\\text{The term after the log symbol  (inside the parenthesis) must be greater than 0!}\\\\Check:\\3-6>0\ \text{FALSE --- so 3 is not a valid solution}\\\\8-6>0\ \text{TRUE}\\8-4>0\ \text{TRUE}\\8>0\ \text{TRUE --- 8 is a valid solution because it is true for all}

8 0
3 years ago
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