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3 years ago

PLEASE ANSWER ASAP!!!!

Mathematics

2 answers:

il63 [147K]3 years ago

8 0

Answer:

Step-by-step explanation:

as the slope is zero so line is x-axis or parallel to x-axis.

so y=k (constant)

when x=-2,y=4

4=k

so eq. of line is y=4

or we can use point slope form.

y-4=0(x+2)

y-4=0

or y=4

xxTIMURxx [149]3 years ago

4 0

Y= mx +b
4= 0(-2) +b
4= b
y= 0x +4
Have a great day!
Let me know if you have any questions

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One of the team is from Greece and wants to change his wages from Pounds Sterling to Euros. The exchange rate is €1 = £0.72.

DedPeter [7]

Part A:

To determine the amount of money in Euros that the team will get, we use the original amount given, the proper dimensional analysis and the conversion factor. For this item,
(£135) x (€1 / £0.72) = €187.5

ANSWER: €187.5

Part B:

Convert first the given length of the arena's stage in centimeters by using the conversion factor, 1 m = 100 cm

(8 meters) x (100 cm/1 m) = 800 cm

Since, both sides will be occupied by 130-cm speaker,

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remaining length = 540 cm

ANSWER: 540 cm or 5.4 m
 

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3 years ago

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Solve the equation 7x25=30

oksian1 [2.3K]

Answer:

x = -(-30/7)^(1/25) or x = (30/7)^(1/25) or x = (-1)^(2/25) (30/7)^(1/25) or x = -(-1)^(3/25) (30/7)^(1/25) or x = (-1)^(4/25) (30/7)^(1/25) or x = -(-1)^(1/5) (30/7)^(1/25) or x = (-1)^(6/25) (30/7)^(1/25) or x = -(-1)^(7/25) (30/7)^(1/25) or x = (-1)^(8/25) (30/7)^(1/25) or x = -(-1)^(9/25) (30/7)^(1/25) or x = (-1)^(2/5) (30/7)^(1/25) or x = -(-1)^(11/25) (30/7)^(1/25) or x = (-1)^(12/25) (30/7)^(1/25) or x = -(-1)^(13/25) (30/7)^(1/25) or x = (-1)^(14/25) (30/7)^(1/25) or x = -(-1)^(3/5) (30/7)^(1/25) or x = (-1)^(16/25) (30/7)^(1/25) or x = -(-1)^(17/25) (30/7)^(1/25) or x = (-1)^(18/25) (30/7)^(1/25) or x = -(-1)^(19/25) (30/7)^(1/25) or x = (-1)^(4/5) (30/7)^(1/25) or x = -(-1)^(21/25) (30/7)^(1/25) or x = (-1)^(22/25) (30/7)^(1/25) or x = -(-1)^(23/25) (30/7)^(1/25) or x = (-1)^(24/25) (30/7)^(1/25)

Step-by-step explanation:

Solve for x:

7 x^25 = 30

Hint: | Divide by an appropriate factor to make the coefficient of x^25 equal to 1.

Divide both sides by 7:

x^25 = 30/7

Hint: | Take 25^th roots of both sides.

Taking 25^th roots gives (30/7)^(1/25) times the 25^th roots of unity:

Answer: x = -(-30/7)^(1/25) or x = (30/7)^(1/25) or x = (-1)^(2/25) (30/7)^(1/25) or x = -(-1)^(3/25) (30/7)^(1/25) or x = (-1)^(4/25) (30/7)^(1/25) or x = -(-1)^(1/5) (30/7)^(1/25) or x = (-1)^(6/25) (30/7)^(1/25) or x = -(-1)^(7/25) (30/7)^(1/25) or x = (-1)^(8/25) (30/7)^(1/25) or x = -(-1)^(9/25) (30/7)^(1/25) or x = (-1)^(2/5) (30/7)^(1/25) or x = -(-1)^(11/25) (30/7)^(1/25) or x = (-1)^(12/25) (30/7)^(1/25) or x = -(-1)^(13/25) (30/7)^(1/25) or x = (-1)^(14/25) (30/7)^(1/25) or x = -(-1)^(3/5) (30/7)^(1/25) or x = (-1)^(16/25) (30/7)^(1/25) or x = -(-1)^(17/25) (30/7)^(1/25) or x = (-1)^(18/25) (30/7)^(1/25) or x = -(-1)^(19/25) (30/7)^(1/25) or x = (-1)^(4/5) (30/7)^(1/25) or x = -(-1)^(21/25) (30/7)^(1/25) or x = (-1)^(22/25) (30/7)^(1/25) or x = -(-1)^(23/25) (30/7)^(1/25) or x = (-1)^(24/25) (30/7)^(1/25)

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4 years ago

Shannon has three different recipes for chocolate chip cookies. If she wants to make 4 dozen cookies from Batch A, she needs to

hjlf

Answer:

1.) Batch C would use 6 cups of chocolate chips to make 12 dozen cookies.

2.) Batch B uses 1 cup of chocolate chips per 1 dozen cookies.

Step-by-step explanation:

To calculate the unit rate for each batch, set up a ratio of cups of chocolate chips to dozens of cookies for each batch and simplify.

Batch A and Batch C both have a unit rate of 0.5 cups of chocolate chips per 1 dozen cookies. Batch B has a unit rate of 1 cup of chocolate chips per 1 dozen cookies.

So, the true statements would be Batch A and Batch C have the same number of chocolate chips per cookie, Batch B uses 1 cup of chocolate chips per 1 dozen cookies, and Batch C would use 6 cups of chocolate chips to make 12 dozen cookies.

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4 years ago

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SashulF [63]

Answer:

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So the answer for this case would be n=20 rounded up to the nearest integer would be the sample required to obatin a margin of erros or 10 ml at 99% of confidence

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma =17$ represent the population standard deviation

n represent the sample size

Solution to the problem

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =10 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.005;0;1)", and we got $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

$n=(\frac{2.58(17)}{10})^2 =19.24 \approx 20$

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3 years ago

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Wittaler [7]

Answer:

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Step-by-step explanation:

The unit price in terms of pounds is just 4.55/5 which is .91 so the answer is 91 cents.

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