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Naddika [18.5K]
3 years ago
8

Please help!!!

Mathematics
1 answer:
mylen [45]3 years ago
8 0

Answer:

1 : 80

Step-by-step explanation:

So you want to check Length of model : Length of real boat

50 cm : 40 m

But since the units don't match, make 40 m into 4000 cm

50 cm : 4000 cm

Divide both sides by 50 and you get

1 : 80

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Could someone please help me pleasee
Alinara [238K]

Answer:

Color where I put the dots (picture attached).

Step-by-step explanation:

Hope this helps/is correct.

Please don't be mad if it's wrong, this is simply what I understood from the instructions. :)

PS. You don't have to copy the line, that's just for you to get an idea.

8 0
3 years ago
What is the answer the the equation 3(n-4)= -9
Inga [223]

Answer:

i believe the answer is N=1

4 0
3 years ago
What value of x makes the equation 4(5 - 7x) = 6 - 12x true?
Lemur [1.5K]

Answer:

4(5 - 7x) = 6 - 12

20-28x=6-12x

Subtract 20 from both sides

20-28x-20=6-12x-20

Simplify

-28x=-12x-14

Add 12x to both sides

-28+12x=-12x=-12x-14+12x

Simplify

-16x=-14

Divide both sides by -16

-16/-16 = -14/-16

Anw

7/8= 0.875

7 0
3 years ago
2x-3y=-11. 3x+2y=20 system of equations I'm not good at these at all I still can't solve any of them
baherus [9]
Okay, so you what you would is solve one equation for Y=mx+b and then substitute this equation for Y so the answer would be Y=-3/2x + 20
And then you would do 2x-3(-3/2x+20)=-11 and you solve it for x
But to get y you would substitute what you got for x into ether equations.
5 0
3 years ago
Evaluate the given equation for the indicated function values. pls help
Xelga [282]

Answer:

The answer in each numeral is:

  1. <u>f(4) = 28</u>
  2. <u>f(10) = -19</u>
  3. <u>f(-5) = -33</u>
  4. <u>f(9) = -9</u>

Step-by-step explanation:

To obtain the result in each case, you must replace the variable (n) by the value that appears in the second case, I'll explain it with the first exercise:

  • 1. f(n) = 5n + 8
  •   f(4) = ?

As you can see, in the second doesn't appear f(n), but f(4), that means you must replace the "n" in the equation by 4, if we do this, we obtain:

  • 1. f(4) = 5*(4) + 8
  • f(4) = 20 + 8
  • <u>f(4) = 28</u>

The first answer is 28, now we'll continue with the next exercises:

  • 2. f(n) = -2n + 1
  • f(10) = -2*(10) + 1
  • f(10) = -20 + 1
  • <u>f(10) = -19</u>

  • 3. f(n) = 6n - 3
  • f(-5) = 6*(-5) - 3
  • f(-5) = -30 - 3
  • <u>f(-5) = -33</u>

  • 4. f(n) = -n
  • <u>f(9) = -9</u>

In this form, <u><em>you can prove the answers are: 28, -19, -33, and -9 respectively</em></u>.

8 0
3 years ago
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