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lianna [129]
3 years ago
7

Guys help me please!

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0

Answer:

Step-by-step explanation:

Suppose you are standing on a street corner. Suppose that you are counting cars. You notice that there are only black ones and white ones. For every 3 black cars there are 4 white ones. Beginning ratios always look something like this.

Black to white = 3 to 4

This is more commonly written in two ways

  • Black to White = 3/4
  • Black:White:: 3:4

So what do you notice? You should see that a ratio is a fraction.

All ratios are fractions.

Now suppose you are still on the street counting cars again. Suppose you notice that after counting 70 cars, you get

  • Black to White = 30:40
  • Is that still 3/4?
  • The answer is yes. You can multiply 3/4 by the same number on the top as you did on the bottom.

That's as much as I want to give you at this time. If you want more, be sure put  a comment at the end of this question. If you do it within an hour, I'll just edit the question. Otherwise, I'll use comments.

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BlackZzzverrR [31]

Answer:

1.) 4a + 55

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4.) b and d

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Step-by-step explanation:

Hope this helped :)

5 0
3 years ago
The value of the 7 in 27,459 is how many times the value of the 7 in 40,735?
alukav5142 [94]

Answer:

10

Step-by-step explanation:

The 7 in 27,459 is in the <em>thousands</em> place.

The 7 in 40,735 is in the <em>hundreds</em> place.

Any digit in the thousands place has 10 times the value of the same digit in the hundreds place. (The multiplier is 1000, instead of 100.)

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In the base-10 number system, each digit location has 10 times the value of the location to its right. The value is determined by the place the digit occupies in the number. That is why it is called a place-value number system.

4 0
3 years ago
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A politician is interested in the proportion of voters in his district that think he is doing a good job. Define the following i
valina [46]
The sample is all voters in the district that think he’s doing a good job
3 0
3 years ago
Show the work please
Kay [80]

Answer:

1) (x + 3)(3x + 2)

2) x= +/-root6 - 1 by 5

Step-by-step explanation:

3x^2 + 11x + 6 = 0 (mid-term break)

using mid-term break

3x^2 + 9x + 2x + 6 = 0

factor out 3x from first pair and +2 from the second pair

3x(x + 3) + 2(x + 3)

factor out x+3

(x + 3)(3x + 2)

5x^2 + 2x = 1 (completing squares)

rearrange the equation

5x^2 + 2x - 1 = 0

divide both sides by 5 to cancel out the 5 of first term

5x^2/5 + 2x/5 - 1/5 = 0/5

x^2 + 2x/5 - 1/5 = 0

rearranging the equation to gain a+b=c form

x^2 + 2x/5 = 1/5

adding (1/5)^2 on both sides

x^2 + 2x/5 + (1/5)^2 = 1/5 + (1/5)^2

(x + 1/5)^2 = 1/5 + 1/25

(x + 1/5)^2 = 5 + 1 by 25

(x + 1/5)^2 = 6/25

taking square root on both sides

root(x + 1/5)^2 = +/- root(6/25)

x + 1/5 = +/- root6 /5

shifting 1/5 on the other side

x = +/- root6 /5 - 1/5

x = +/- root6 - 1 by 5

x = + root6 - 1 by 5 or x= - root6 - 1 by 5

4 0
3 years ago
Bananas sell for $0.44 pounds. How much will 6 pounds of bananas cost.
Angelina_Jolie [31]

Answer:

$2.64

Step-by-step explanation:

0.44 times 6.

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