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larisa [96]
3 years ago
11

There is a string of red and blue lights strung around a window . The red lights blink every 3 seconds , and the blue lights bli

nk every 5 seconds , how many times will they blink at the same time in one minutes ?
Mathematics
1 answer:
Nezavi [6.7K]3 years ago
3 0
Give us more evidence please
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3y - 6 + 4x = 0 <br><br>A, B, C, or D​
MatroZZZ [7]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
the Royal fruit company produces two types of fruit drinks. The first type is 20% pure fruit juice, and the second type is a 45%
AlexFokin [52]

We know that 20% of the first type of juice is pure fruit juice and 45% of second type of juice is pure fruit juice.

Now we have to make 30 pints of a mixture that is 35% pure.

Let x be the number of pints of first type of juice and y be the number of pints of second type of juice.

So, x+y=30 (Equation 1)

Since, 20% of x + 45% of y = 35.3% of 30

\frac{x}{5}+\frac{9y}{20}=10.5 (Equation 2)

Solving equations 1 and 2,

we get y=18 and x=12.

So, 12 pints of first type of juice and 18 pints of second type of juice are used.

6 0
3 years ago
Help I’ll mark you brainly!
Gnesinka [82]
Pls mark brainleist

7 0
3 years ago
What does a 3 in front of a square root mean?
zlopas [31]
The 3 goes with the square root you don’t need to multiply or anything like that. If you need to simply for example 3 square root of 20 which is when 3 is outside the square root sign. The 20 will be separated with 4*5 in the square root and then you will square root the 4 leaving the 5 in and bringing 2 out. Now you can’t just bring it out and forget about the 3 outside you need to multiply that 2 and 3 and you get 6! So you final answer is 6 square root 5. Hope this helps reply if you have a question!
5 0
3 years ago
Read 2 more answers
The volume of a rectangular tank is 20 000 cm3 . Given that the length is 40 cm and width is 25 cm, find its height
olga nikolaevna [1]

<em>answer \\ 20 \: cm \\ solution \\ volume = 20000 \:  {cm}^{3}  \\ length = 40 \: cm \\ breadth = 25 \: cm \\ height =  \\ now \\ v = l \times b \times h \\  \:  \:  \:  \:  \:  \: or \: 20000 = 40 \times 25 \times h \\ or \: 20000 = 1000 \times h \\ or \: h =  \frac{20000}{1000}  \\ h = 20 \: cm \\ hope \: it \: helps</em>

5 0
3 years ago
Read 2 more answers
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