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Alborosie
2 years ago
13

PLEASE HELP!!

Mathematics
1 answer:
Nitella [24]2 years ago
7 0

Answer:

d

Step-by-step explanation:

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Find the coordinates of the turning point for the equation of the graph below y=x^2+14x+45
USPshnik [31]

Answer:

(- 7, - 4 )

Step-by-step explanation:

Given a quadratic in standard form

y = ax² + bx + c ( a ≠ 0 )

Then the x- coordinate of the turning point is

x = - \frac{b}{2a}

y = x² + 14x + 45 ← is in standard form

with a = 1, b = 14 , then

x = - \frac{14}{2} = - 7

Substitute x = - 7 into the equation and evaluate for y

y = (- 7)² + 14(- 7) + 45 = 49 - 98 + 45 = - 4

coordinates of turning point = (- 7, - 4 )

4 0
2 years ago
A company is developing a new high-performance wax for cross country ski racing. In order to justify the price marketing wants,
andrew11 [14]

Answer:

A)Yes they should market the wax, because it melts before 55 seconds

C) Null hypothesis: mean <55 vs. Alternative hypothesis :mean =55

D) the value is 51.33 seconds

Step-by-step explanation:

The selected samples for the champion are : 57.9, 62.9, 50.6, 50.5,48.2,47.2,50.2 and 43.1

The mean is ;

Sum =57.9 + 62.9 + 50.6 + 50.5+48.2+47.2+50.2+ 43.1 =410.6

Mean= 410.6/8 =51.33= mean

Assuming Significant =0.05 thus applying this level will give you 51.28-51.38

if specifically, the mean time to finish their standard test course should be less than 55 seconds for a former Olympic champion, then the null hypothesis is correct

Then;

Null hypothesis: mean <55

Alternative hypothesis :mean =55

7 0
2 years ago
Text me imsooo bored and lonely
netineya [11]

Answer:

I got u homie wassup with you

8 0
2 years ago
Read 2 more answers
How many gallons of water can you put into the pool in five minutes?
Sidana [21]

Answer:

You don't give us any information that is helpful, Sorry.

Step-by-step explanation:

6 0
2 years ago
Solve<br><br> -3 &lt; -4x + 1 &lt; 13<br><br> A. (-3,1)<br> B. [-3,1]<br> C. (4,2)<br> D. [4,2]
Lynna [10]

<em>Greetings from Brasil...</em>

Let's solve this inequality.

Let's isolate X. For this, the elements that are with it must be sent to both sides:

- 3 < - 4X + 1 < 13

- 3 - 1 < - 4X < 13 - 1

- 4 < - 4X < 12

<h2>- 3 < X < 1</h2>

<em>important: see annex</em>

7 0
3 years ago
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