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3 years ago

PLEASE HELP WITH ALGEBRA AND SHOW WORK :) an explanation would be nice too because this topic confuses me :/

Mathematics

1 answer:

fgiga [73]3 years ago

6 0

$f(t) = t^2 + 4t-14\\ f(t)=t^2+4t+4-18\\ f(t)=(t+2)^2-18$

$f(x)=(x-h)^2+k \Rightarrow \text{vertex}=(h,k)\\\\ f(t)=(t+2)^2-18 \Rightarrow \text{vertex}=(-2,-18)$

It's a minimum, becuase $a=1>0$ .

The axis of symmetry is $x=h$ . So, in this case, it's $x=-2$ .

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Solve:<br> -11 - 79 +5g = 3

Katyanochek1 [597]

Answer:

g=18.6

Step-by-step explanation:

-11-79+5g=3

-90+5g=3

5g=3+90

5g=93

g=93/5=18.6

g=18.6

6 0

3 years ago

Which questions best describes: A tire manufacturer has a 60,000 mile warranty for tread life. The manufacturer considers the ov

seropon [69]

This question is incomplete because the answer choices were not provided. The complete question was obtained from google as:

A tire manufacturer has a 60,000 mile warranty for tread life. The manufacturer considers the overall tire quality to be acceptable if less than 5% are worn out at 60,000 miles. The manufacturer tests 250 tires that have been used for 60,000 miles. They find that 3.6% of them are worn out. With this data, we test the following hypotheses.

H0: The proportion of tires that are worn out after 60,000 miles is equal to 0.05.

Ha: The proportion of tires that are worn out after 60,000 miles is less than 0.05.

In order to assess the evidence, which question best describes what we need to determine?

a. If we examine a sample of tires used for 60,000 miles and determine the proportion that are worn out, how likely is that proportion to be 3.6% or less?

b. If we examine the proportion of worn out tires in the population of tires used for 60,000 miles, how likely is that proportion to be 5%?

c. If we examine the proportion of worn out tires in the population of tires used for 60,000 miles, how likely is that proportion to be less than 5%?

d. If we examine the proportion of worn out tires in the population of tires used for 60,000 miles, how likely is that proportion to be 3.6%?

e. If we examine a sample of tires used for 60,000 miles and determine the proportion that are worn out, how likely is that proportion to be less than 5%?

Answer:

Option A is the correct question - If we examine a sample of tires used for 60,000 miles and determine the proportion that is worn out, how likely is that proportion to be 3.6% or less?

Step-by-step explanation:

The correct question that describes what needs to be determined is expressed in option A as this will give us p-value and we will guide us in deciding whether to keep or reject the null hypothesis

Thus option A is the correct question - If we examine a sample of tires used for 60,000 miles and determine the proportion that is worn out, how likely is that proportion to be 3.6% or less?

7 0

3 years ago

What is the equation of the parabola with a vertex at (-2, 3) and a focus at (-2, 0)? Does it open upward or downward?

rodikova [14]

Refer to the diagram shown below.

The distance, d, from the focus to a point P (x,y) is equal to the distance from the directrix to P.
Therefore
d² = (6 - y)²
= (x + 2)² + y²
That is,
36 - 12y + y² = (x + 2)² + y²
12y = -(x + 2)² + 36

The equation of the parabola is
y = -(1/12)(x + 2)² + 3
It may be written as
-12(y - 3) = (x + 2)²

The leading coefficient -1/12 is negative, therefore the curve opens downward.

Answer:
The equation is (x + 2)² = -12(y - 3).
The curve opens downward.

3 0

3 years ago

Read 2 more answers

Is the square root of 5+1/5 rational or irrational

Vikentia [17]

The square root of 5+1/5 (5.2, 5 1/5) is rational as it has an end you can clearly see. The square root of 5.2 is 2.28035085 exactly.

7 0

3 years ago

James works in a flower shop.He will put 36 tulips in vases for wedding.He must use the same number of tulips in each vase.How m

Maru [420]

6 because there would be the same number of tulips in each vase and same name of vases. 6 x 6 is 36

8 0

2 years ago