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2 years ago

Can i have help in these next few minutes

Mathematics

1 answer:

Kamila [148]2 years ago

8 0

Answer:

y = - 0.5(x - 1)² + 2

Step-by-step explanation:

<u>The vertex form is</u>

y = a(x - h)² + k, where (h, k) is the coordinates of vertex

We see the vertex has coordinates (1, 2)

Substitute the coordinates to get

y = a(x - 1)² + 2

Use one of the x-intercepts to find the value of a, use (- 1, 0)

0 = a(- 1 - 1)² + 2
0 = 4a + 2
4a = - 2
a = - 2/4
a = - 1/2 or - 0.5

The equation of the parabola is

y = - 0.5(x - 1)² + 2

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The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population standard deviati

garik1379 [7]

Answer:

Their welders earn $50,000 annually.

Step-by-step explanation:

Given : $\mu = 50,000$

$\sigma = 2000$

n = 100

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Solution :

$H_0:\mu = 50000\\H_a: \mu \neq 50000$

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Since n > 30

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p value = 0.9599

α= 0.05

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3 years ago

5(5t + 1) = 25t-7<br> Can someone help me with this solution??

masha68 [24]

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Step-by-step explanation:

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