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3 years ago

What is the vertex of the parabola represented by y = - x^2 + 6x – 5?

Mathematics

2 answers:

Katena32 [7]3 years ago

6 0

Your vertex would be (3,4)

bekas [8.4K]3 years ago

3 0

Answer: (3,4)

Step-by-step explanation:

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A crew of highway workers paved 1/5 mile in 1/8 hour. If they work at the same rate, how much will they

Elan Coil [88]

Answer:

The easiest approach is to realise that one hour is 3 times longer than 20 minutes. The longer the time, the more they will pave.

215 of a mile, in 20 minutes, how much in 60 minutes?#

They will pave 3 times more.

215×31=615 of a mile

615=25 of a mile

You could also use the 'unitary method' where you find out how much they pave in ONE minute (divide by 20) and them multiply by 60 to find how much in one hour.

Look at what happens:

215÷20×60

=215×120×603

=215×3 ← exactly the same maths.

=25

6 0

3 years ago

Write in function form. Then make a graph NEED HELP ASAP PLSSS

Kaylis [27]

Solving for Y

3x+y=2

y=2-3x

y=2-3x,x R

Solving for X

3x+y=2

3x=2-y

x= 2/3-1/3y

x=2/3-1/3y

Find the x-intercept

3x+y=2

3x+0=2

3x=2

x=2/3

Find the y-intercept

3x+y=2

3 times 0+y=2

y=2

5 0

3 years ago

An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the

inna [77]

Answer: 0.6812

Step-by-step explanation:

Let p be the population proportion of trees are infested by a bark beetle.

As per given: p= 12%= 0.12

Sample size : n= 1000

Number of trees affected in sample = 1000

Sample proportion of trees are infested by a bark beetle. = $\hat{p}=\dfrac{127}{1000}=0.127$

Now, the z-test statistic : $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

So, $z=\dfrac{0.127-0.12}{\sqrt{\dfrac{0.12\times 0.88}{1000}}}$

$z=\dfrac{0.007}{\sqrt{\dfrac{0.1056}{1000}}}\\\\\\=\dfrac{0.007}{\sqrt{0.0001056}}\\\\\\=\dfrac{0.007}{0.010276}\approx0.6812$

Hence, the value of the z-test statistic = 0.6812 .

7 0

3 years ago

Miguel spent 1/8 of his savings on a new video game system. Mila spent 12% of her savings on her DVD, and Manny spent 0.1 of his

Vilka [71]

Miguel spent the most of his savings.

7 0

2 years ago

In the diagram, PQR is a straight line. Calculate the value of X and Y. HELPP!!! easy questions* will mark as brainliest!!! I AM

avanturin [10]

Answer:

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3 years ago