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stepan [7]
3 years ago
14

Evaluate the expression 9 – 2 when z = 4.

Mathematics
1 answer:
vladimir1956 [14]3 years ago
4 0

Answer:

5

Step-by-step explanation:

I'm assuming the 2 was supposed to be "z" so if it was... just substitute z for 4

Giving you 9-4 which equals 5

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A basketball team has 9 players. In how many different ways can the coach coach select 2 players to be the captain for tonight's
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Its acctually 36 jnioq54hmkdbf



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3 years ago
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The length of a rectangle is 3131 inches greatergreater than twice the width. if the diagonal is 2 inches more than the​ length,
Gala2k [10]

We have a rectangle with a diagonal included. That means we have to use Pythagorean's Theorem to find the missing dimensions. We start with the width as w. The length is 31 more than twice the width, so the length is 2w+31. The hypotenuse (diagonal) is 2 more than the length, so the diagonal measures 2w+33. In a right triangle, the hypotenuse is always the longest side, so we set up Pythagorean's Theorem using the bolded values as such: (2w+33)^2=w^2+(2w+31)^2. Distributing by multiplying we simplify to 4w^2+132w+1089=w^2+4w^2+124w+961. We need to solve for w. Once we do that we can use that value to find the length. What's nice is that the 4w^2 terms cancel each other out. So when we combine like terms and get them all on one side of the equals sign to factor we have w^2-8w-128=0. The 2 numbers that add up to -8 and multiply to -128 are 16 and -8. So the width is either 16 inches or the width is -8 inches. The 2 things in math that will never EVER be negative are time and distance/length. So -8 is out. The width is 16 inches. That means that the length is 2(16)+31, which is 63 inches. There you go!

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Where were MOST of France's colonies located in Africa?
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8 0
2 years ago
9x + бу = 36<br> Help ASAP Thanks
dangina [55]

Answer:

x=2

y=3

Step-by-step explanation:

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7 0
3 years ago
Y = 230x + 100<br> Is this proportional or non proportional?
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<h3>Answer:  Non proportional</h3>

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The +100 at the end is why we don't have a proportional equation.

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3 years ago
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