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Leto [7]
3 years ago
6

Write in point-slope form an equation of the line that passes through the given point and has the given slope.

Mathematics
1 answer:
andre [41]3 years ago
5 0

The point-slope form:

y-y_1=m(x-x_1)

3. (4, -2); m = 1/4

y-(-2)=\dfrac{1}{4}(x-4)\\\\\boxed{y+2=\dfrac{1}{4}(x-4)}

4. (-3, 5); m = -4/3

y-5=-\dfrac{4}{3}(x-(-3))\\\\\boxed{y-5=-\dfrac{4}{3}(x+3)}

5. (2, 2); m= - 1

\boxed{y-2-(x-2)}

6. (-1, -5); m = 4

y-(-5)=4(x-(-1))\\\\\boxed{y+5=4(x+1)}

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Witch is longer distsance 20% of 320 miles of 1/2of 130 you must show your working out
Paladinen [302]

Answer: \frac{1}{2}\ \text{of}\ 130> 20\%\ \text{of}\ 320

Step-by-step explanation:

20\%\ \text{of}\ 320\ \text{is}\\\Rightarrow \frac{20}{100}\times 320=64\ \text{miles}

\frac{1}{2}\ \text{of}\ 130\ \text{is} \\\Rightarrow \dfrac{130}{2}=65\ \text{miles}

clearly,  \frac{1}{2}\ \text{of}\ 130> 20\%\ \text{of}\ 320

7 0
3 years ago
A __________ is a claim or assertion either about one or more population or process characteristics (parameters) or else about t
Vladimir [108]

Answer:

statistical hypothesis.

Step-by-step explanation:

A statistical hypothesis has the central objective of assisting in a decision-making process about one or more populations in relation to the sample data, allowing the observance of whether the information found in the samples will support the statistical hypothesis.

It is necessary to know concepts of mathematical probability to perform the tests, the most used models for this purpose are the fisher method, by Neyman-Pearson and Bayes.

The variables used in a statistical hypothesis are: the Null Hypothesis, the one that is assumed to be the true one, the Alternative Hypothesis, the one that is used when there is no statistic to analyze the hypothesis given as true, the Type I Error, related to the probability of rejection of the null hypothesis, and the Type II Error, which is the probability of rejection of the alternative hypothesis if it is true.

6 0
3 years ago
Diana has been saving nickels and dimes. She opened up her piggy bank and determined that it contained 48 coins worth $4.50. Det
tino4ka555 [31]

Answer:

6 Nickels

42 Dimes

Step-by-step explanation:

There are 48 coins in total (nickels and dimes). Let the number of nickels be "n" and the number of dimes be "d". So we can write:

n + d = 48

or

n = 48 - d

In dollars, we know nickels are worth 0.05 and dimes are worth 0.10. In total there is $4.50, so we can write:

0.05n + 0.10d = 4.50

Now replacing first equation [n = 48 - d] into 2nd, we get and equation in "d" and solve for d first:

0.05n + 0.10d = 4.50\\0.05(48-d) + 0.10d = 4.50\\2.4-0.05d+0.10d=4.50\\0.05d=4.50-2.4\\0.05d=2.1\\d=\frac{2.1}{0.05}=42

So, there are 42 dimes.

We know from before, n = 48 - d, so

n = 48 - 42 = 6

There are 6 nickels

3 0
3 years ago
Helppp pleaseeee I will get brainlest : ) type if u do
Deffense [45]

Answer:

It is 4.5

Step-by-step explanation:

You can estime so 82 as 80 and 352 and 350 and the so the clossest is 4.5

8 0
3 years ago
After the game the coach bought 9 chicken meals for $5 each and 15 burger meals for $6 each. What percent of the total amount th
cluponka [151]
Total amount=9 chicken.($5/chicken)+15 burguer meals.(6$/burquer meal)=
=$45+$90=$135.


Percent (chicken meals)=($45.100%) / $135=33,33%.

Solution: 33,33%.
4 0
3 years ago
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