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Travka [436]
3 years ago
11

24 PTS!!!!!!1

Mathematics
1 answer:
balandron [24]3 years ago
8 0

Answer:

  D  (7, 0.5)

Step-by-step explanation:

The equations must be interpreted to be ...

  • y = -1/2x +4
  • y = 1/2x -3

A graph shows the solution to be (7, 0.5), matching selection D.

___

You can add the two equations together to get ...

  (y) +(y) = (-1/2x +4) + (1/2x -3)

  2y = 1 . . . . . simplify

  y = 1/2 . . . . .divide by 2

It can be convenient to use the second equation to find x.

  1/2 = 1/2x - 3

  1 = x - 6 . . . . . . multiply by 2

  7 = x . . . . . . . . . add 6

The solution is (x, y) = (7, 0.5). . . . . matches selection D.

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207°

Step-by-step explanation:

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How is the numeral 55.12 written in words?
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In a recent awards​ ceremony, the age of the winner for best actor was 35 and the age of the winner for best actress was 54. For
Arada [10]

Answer:

The actress has the more extreme age because

Step-by-step explanation:

Given

Male Athletes:

x = 35

\=x = 42.1

SD = 6.6

Female Athletes

x = 54

\=x = 34.3

SD = 10.1

Required

Determine which athlete had more extreme age

To do this, we simply calculate the standard z score using

z = \frac{x - \=x}{SD}

For the actor:

z = \frac{35 - 42.1}{6.6}

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For the actress:

z = \frac{54 - 34.3}{10.1}

z = \frac{19.7}{10.1}

z = 1.950

Comparing both z values;

The actress has the more extreme age because

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  • <em>Its z value is greater than that of the actor</em>

<em></em>

6 0
2 years ago
A baby outfit uses 2/9 square yard of fabric for the hat and 5/9 square yards of fabric for the bib. A tailor has 5 4/9 square y
Ludmilka [50]

Answer:

She can make<u> 7 </u>baby outfits.

Step-by-step explanation:

Given:

A baby outfit uses 2/9 square yard of fabric for the hat and 5/9 square yards of fabric for the bib.

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Now, to find the outfits she can make.

So, we add to get the total fabric used for baby outfits hat and bib:

\frac{2}{9} +\frac{5}{9}\ square\ yards.

=\frac{2+5}{9}\ square\ yards.

=\frac{7}{9}\ square\ yards.

Total fabric used for outfit = =\frac{7}{9}\ square\ yards.

Total fabric tailor has = 5\frac{4}{9} =\frac{49}{9}\ square\ yards

Now, to get the number of outfits from the fabric tailor has we divide by total fabric used for outfit:

Number of outfits = Total fabric tailor has  ÷  Total fabric used for outfit.

Number\ of\ outfits = \frac{49}{9} \div\frac{7}{9}

<em>Thus, on dividing we get:</em>

Number\ of\ outfits = 7\ outfits.

Therefore, she can make 7 baby outfits.  

6 0
3 years ago
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