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dusya [7]
4 years ago
11

What is the value of x? Enter your answer in the box. x =

Mathematics
1 answer:
Ghella [55]4 years ago
8 0

Answer: x=12


Step-by-step explanation: Knowing that this is on a straight line, which is 180°, you can assume that both angles add up to 180°. You can turn this into an agebraic equation by saying that (10x-20)°+(6x+8)° = 180°. by simplifying, you get 16x-12 = 180. Adding 12 to both sides yields 16x = 192. To finish the equation, you divide both sides by 16; completing to x=12.


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FromTheMoon [43]

Answer:

80%

Step-by-step explanation:

If you divide 52 by 65 you will get a decimal, then multiply by 100% to get the equivalent.

52/65 = 0.8

0.8 x 100 = 80%

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3 years ago
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Which is bigger 1/4” or 7/16”?
Nina [5.8K]
1/4 becuase it .25 therefore making it bigger

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Use pascal's triangle to expand the binomial <br><br> (d-5y)^6<br><br> show work.
Zielflug [23.3K]

In attached file you can see Pascal's triangle. Explanation for this triangle is following:

  1. coefficient in 0th row is (a+b)^0=1
  2. coefficients in 1st row are coefficients of (a+b)^1=1\cdot a+1\cdot b
  3. coefficients in 2nd row are coefficients of (a+b)^2=1\cdot a^2+2\cdot ab+1\cdot b^2
  4. coefficients in 3rd row are coefficients of (a+b)^3=1\cdot a^3+3\cdot a^2b+3\cdot ab^2+1\cdot b^3 and so on
  5. coefficients in 6th row are coefficients of (a+b)^6=1\cdot a^6+6\cdot a^5b+15\cdot a^4b^2+20\cdot a^3b^3+15\cdot a^2b^4+6\cdot ab^5+1\cdot b^6.

Then

(d-5y)^6=\\=1\cdot d^6-6\cdot d^5\cdot 5y+15\cdot d^4\cdot (5y)^2-20\cdot d^3\cdot (5y)^3+15\cdot d^2\cdot (5y)^4-6\cdot d\cdot (5y)^5+1\cdot (5y)^6.

Simplify it:

(d-5y)^6=d^6-30d^5y+375d^4y^2-2500d^3y^3+9375d^2y^4-18750dy^5+15625y^6.

4 0
3 years ago
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What steps could be used to solve the equation 1 + 3x = -x + 4.
san4es73 [151]

Answer:

Combing like terms

Step-by-step explanation:

4 0
3 years ago
Needing answers! Thanks! Giving Brainliest!
Nady [450]

Step-by-step explanation:

you know how to multiply fractions ?

a/b × c/d = (a×c)/(b×d)

the 2 top parts are multiplied and the 2 bottom parts are multiplied.

the existing answers in "Model" are wrong.

when we multiply the actual size by the scaling factor, we get the model size.

2 1/3 = (6+1)/3 = 7/3

7/3 × 2/5 = 14/15

this is s little bit smaller than 1, and definitely not 1 1/3 (more than 1).

similar with the width.

1 3/7 = (7+3)/7 = 10/7

10/7 × 2/5 = 20/35 = 4/7 (and not 3/4)

so, this is all wrong.

the question is, if maybe the specified scaling factor of 2/5 is wrong.

so, let's see what the scaling factual is for the given model sizes.

7/3 × f = 1 1/3 = (3+1)/3 = 4/3

7f = 4

f = 4/7

now let's try this scaling factor for the width :

10/7 × 4/7 = 40/49

no, this is also not 3/4 (not even close). this is much closer to 4/5.

therefore, I assume now that the actual and scale numbers are correct, and we calculate all the correct model numbers.

so, again

the model length is actually 14/15

the model width is 4/7

the model height is

(8+1)/8 × 2/5 = 9/8 × 2/5 = 18/40 = 9/20

the model door width is

6/7 × 2/5 = 12/35

the model door height is

7/8 × 2/5 = 14/40

and because the scaling factor (2/5) is smaller than 1, actually smaller than 1/2, the model numbers will be smaller then even half the actual numbers. as our results above show.

8 0
3 years ago
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