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Reil [10]
2 years ago
12

Pls help this is really important

Mathematics
1 answer:
oee [108]2 years ago
7 0

Answer:

x = 30 I'm sure hope this helps

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How do you solve 7.2>0.9(n+8.6)
labwork [276]
7.2>0.9(n+8.6)
multiply 0.9 by all in parentheses

7.2> (0.9*n) + (0.9*8.6)
7.2> 0.9n + 7.74

subtract 7.74 from both sides
-0.54> 0.9n

divide both sides by 0.9
-0.6> n

ANSWER: -0.6> n

Hope this helps! :)
6 0
3 years ago
I really need help with this ... I hope someone can help!
viva [34]

9514 1404 393

Answer:

  ∠B = 53°

  ∠C = 127°

  ∠D = 127°

Step-by-step explanation:

The trapezoid is isosceles, as indicated by the hash marks on sides AD and BC. This means it is symmetrical about the vertical center-line. Angles on the right will have the same measures as the symmetrical angles on the left.

So, you know immediately that ∠B = ∠A = 53°.

Because AB ║ DC, ∠A and ∠D are supplementary. That is, ...

  ∠D = ∠C = 180° -53°

  ∠D = ∠C = 127°

4 0
2 years ago
Determine the value of n that makes the polynomial a perfect square trinomial. Then factor as the square of a binomial. Express
blsea [12.9K]

Answer:

Step-by-step explanation:

y^2-11y+n\\=(y-(11/2))^2+n-(11/2)^2

So in order the trinomial a perfect square we need

n-(11/2)^2 =0\\n= (11/2)^2\\n=\frac{121}{4}

When n is equal to this number that we have

y^2-11y+n = (y- (11/2))^2

6 0
2 years ago
Eliott was trying to factor 6x^2-18 . He found that the greatest common factor of these terms was 6 and made an area model:
Semenov [28]

x²-3

Step-by-step explanation:

The expression given is;

6x²-18

Finding the greatest common factor of the terms and simplifying the expression will be;

Divide the terms by 6 to get;

x²-3

Graphing the expression to find the area model will be as attached;

Learn More

Factorizing expressions:brainly.com/question/12290978

Keywords : factor, greatest common factor, terms, area model

#LearnwithBrainly

4 0
3 years ago
Solve 2x2 + 5x = 12
Delvig [45]

Answer:

A

Step-by-step explanation:

2x² + 5x = 12

2x² + 5x - 12 = 0

x² + 5x - 24 = 0

factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24. the only pair that adds to 5 is 8 and 3

2x² - 3x + 8x - 12 = 0

split the equation and factor

2x² - 3x = 0 ||| 8x - 12 = 0

x(2x - 3) ||| 4(2x - 3)

therefore the pair is (2x - 3)(x + 4)

2x - 3 = 0

2x = 3

x = 3/2

or

x + 4 = 0

x = -4

3 0
2 years ago
Read 2 more answers
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