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Pachacha [2.7K]
3 years ago
11

Find x (2x + 50) (3x - 10°) final answer needs to equal 90°!!!! Please help ??

Mathematics
1 answer:
bonufazy [111]3 years ago
6 0
Answer: x = 10°
(2x + 50) = 70°
(3x - 10) = 20°

Steps:
(2x + 50)° + (3x -10)° = 90°
2x + 50 + 3x - 10 = 90°
5x + 40 = 90°
5x = 50°
x = 10°

(2x + 50)
2(10) + 50
20 + 50
70

(3x - 10)
3(10) - 10
30 - 10
20

Check:
70 + 20 = 90
90 = 90 ✅
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The median number of minutes for Jake and Sarah are equal, but the mean numbers are different.

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For this, you never said the choices, but I’ve done this before, so I’m going to use the answer choices I had, and hopefully they are right.

Our choices are -

• The median number of minutes for Jake is higher than the median number of minutes for Sarah.

• The mean number of minutes for Sarah is higher than the mean number of minutes for Jake.

• The mean number of minutes for Jake and Sarah are equal, but the median number of minutes are different.

• The median number of minutes for Jake and Sarah are equal, but the mean number of minutes are different.

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So to answer the question, we neee to find the median and mean for each data set, so -

Jack = [90 median] [89.6 mean]
Sarah = [90 median] [89.5 mean]

We can clearly see the median for both is 90, so we can eliminate all the choices that say they are unequal.

We can also see that Jack has a higher mean (89.6) compared to Sarah (89.5).

We can eliminate all the choices that don’t imply that too.

That leaves us with -

• The median number of minutes for Jake and Sarah are equal, but the mean number of minutes are different.
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In two or more complete sentences, compare the number of x-intercepts in the graph of f(t) = t^2 to the number of x-intercepts i
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Answer:

Step-by-step explanation:

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Alguien me podria ayudar a resolverlos con su procedimiento
Scilla [17]

Answer:

Step-by-step explanation:

f(x) = 2x² + x - 3

f'(x) = 4x + 1

f'(x) = 4(-1) + 1 = -3 slope

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(-1, -2)

-2 = -3(-1) + B

B = -5 y intercept

y = -3x - 5

f(x) = 1/x² = x⁻²

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