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3 years ago

14

Note your teacher will grade your response to ensure you receive proper credit for your answer a quadratic equation can be writt

en in vertex form or in standard form

1 answer:

alina1380 [7]3 years ago

8 0

Answer:

vertex form: y = a(x – h)2 + k, where (h, k) is the vertex

standard form: y = ax^2 + bx + c

Step-by-step explanation:

not certain what the qustion is

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Use a unit multiplier to convert<br> $12.00 per hour to dollars per<br> minute.

il63 [147K]

Answer:

$00.20 per min

Step-by-step explanation:

Technically $12.00 per hour is $12.00 per 60 min. So now take that and divide $12.00 by 60 and you get 20 cents per min.

6 0

3 years ago

Read 2 more answers

6. At the beginning of school, Julie bought one 3-subject notebook and four single-subject notebooks

larisa [96]

Answer: 3-subject notebook cost $0.67 or 67 cents and the single-notebook cost $0.33 or 33 cents.

Step-by-step explanation:

Let's represent the 3-subject notebook by y and the single-notebook by x.

y has to cost twice as much as x and we can represent that by the equation

y = 2x

We now know that the total cost of the 3-subject notebook and the single-subject notebook has to equal $1.

We can also represent that by the equation and solve for x

2x + x = 1

3x = 1

x = 0.33 $0.33 or 33 cents

If the single-subject is $33 cents then subtract it from a dollar to see how much the 3-subject notebook costed.

1- 0.33 = 0.67

3 0

3 years ago

The director of a radio broadcasting company wants to determine whether the mean length of commercials on his station is equal t

denpristay [2]

Answer:

The value of t test statistics is 4.518.

Step-by-step explanation:

We are given that director of a radio broadcasting company wants to determine whether the mean length of commercials on his station is equal to 24 seconds.

He samples 200 commercials, and finds that the average length of these commercials is 26.3 seconds, with a standard deviation of 7.2 seconds.

<em>Let </em> $\mu$ <em> = mean length of commercials on his station.</em>

So, Null Hypothesis, $H_0$ : $\mu$ = 24 seconds {means that the mean length of commercials on his station is equal to 24 seconds}

Alternate Hypothesis, $H_A$ : $\mu\neq$ 24 seconds {means that the mean length of commercials on his station is different from 24 seconds}

The test statistics that would be used here <u>One-sample t test statistics</u> as we don't know about the population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample average length of these commercials = 26.3 seconds

s = sample standard deviation = 7.2 seconds

n = sample of commercials = 200

So, <u><em>test statistics</em></u> = $\frac{26.3-24}{\frac{7.2}{\sqrt{200} } }$ ~ $t_1_9_9$

= 4.518

The value of t test statistics is 4.518.

3 0

3 years ago

-10p^2q+7p^3q-5q

aliya0001 [1]

1. 7p^3q - 10p^2q - 5q ...(descending order -- highest exponent to lowest exponent
2. here are ur terms : 7p^3q and 10p^2q and 5q....so there are 3 terms, making this a trinomial.
3. the degree of the polynomial, in this case, is the highest exponent....and that is 3...so it is a 3rd degree trinomial

8 0

3 years ago

To prepare for a bake-off, Travis used 630 grams of flour each day for 3 weeks. How many kilograms did Travis use in those 3 wee

Diano4ka-milaya [45]

Answer:

hahahahhahahahahahahahahq

6 0

3 years ago