All categories

3 years ago

I need help with this!!

Mathematics

2 answers:

Aleksandr [31]3 years ago

5 0

Answer:

i think c

Step-by-step explanation:

hope it helps :)

kozerog [31]3 years ago

5 0

The question is really asking what the slope (m) of the line is. Here’s the answer:

Slope= the variable m

m=rise/run; m=change in y/change in x

We need to find the rate of how much the taxi driver charges per minute.

Therefore:

We need to pick a precise point on the line ( a precise point is a point with whole number x and y coordinates; no decimals or fractions).

We see that the point (6, 9) is precise.

A rate is a ratio in the form of a fraction that shows the relationship of change between two quantities: a/b.

So, the taxi costs 9 dollars / 6 minutes.

9/6 simplifies 2/3.

And thus, the taxi charges 2 dollars per 3 minutes

So, the answer is 9/6, which can be simplified to the furthest possibility, making it a unit rate.

Answer: 9/6

You might be interested in

An investigator thinks that people under the age of forty have vocabularies that are different than those of people over sixty y

Kay [80]

Answer:

$t=\frac{(14-20)-0}{\sqrt{\frac{5^2}{31}+\frac{6^2}{31}}}}=-4.28$

Now we can calculate the p value with the following probability:

$p_v =2*P(t_{60}$

The p value is a very low value so then we have enough evidence to reject the null hypothesis and we can conclude that people under the age of forty have vocabularies that are different than those of people over sixty years of age.

Step-by-step explanation:

Information given

$\bar X_{1}=14$ represent the mean for sample 1 (younger)

$\bar X_{2}=20$ represent the mean for sample 2 (older)

$s_{1}=5$ represent the sample standard deviation for 1

$s_{f}=6$ represent the sample standard deviation for 2

$n_{1}=31$ sample size for the group 2

$n_{2}=31$ sample size for the group 2

t would represent the statistic

System of hypothesis

We want to test if that people under the age of forty have vocabularies that are different than those of people over sixty years of age, the system of hypothesis are:

Null hypothesis: $\mu_{1}-\mu_{2}=0$

Alternative hypothesis: $\mu_{1} - \mu_{2}\neq 0$

The statistic is given by:

$t=\frac{(\bar X_{1}-\bar X_{2})-\Delta}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}}$ (1)

And the degrees of freedom are given by $df=n_1 +n_2 -2=31+31-2=60$

Replacing the info given we got:

$t=\frac{(14-20)-0}{\sqrt{\frac{5^2}{31}+\frac{6^2}{31}}}}=-4.28$

Now we can calculate the p value with the following probability:

$p_v =2*P(t_{60}$

6 0

3 years ago

Please Help me ASAP VERY URGENT

jenyasd209 [6]

Answer:

A= 115 degrees

C= 50 degrees

Step-by-step explanation:

All angles are equal to 180 so the equation is:

180=4x-13+x+18+15

180=5x+20

160=5x

x=32

6 0

3 years ago

Read 2 more answers

Roshan makes the table below to describe how to draw a ray diagram for a convex lens.

VikaD [51]

Answer:

The ray that goes parallel to the main axis after passing through the lens should also be parallel from the object to the lens

Step-by-step explanation:

To form the image of an object using a convex lens, ray diagrams are used. The following steps are followed when drawing ray diagrams.

1) Light rays are drawn from the object incidented on the lens and parallel to the principal axis. The incident light refracts (bends) through the lens and converges at the focal point at the other side of the lens.

2) Another incident light passes through the optical centre undeflected and intersect with the refracted ray at the other side of the lens.

Based on the above points, Roshan made an error by drawing the ray that goes parallel to the main axis and after passing through the lens made the same ray to be parallel from the object to the lens instead of refracting (bending) after passing through the lens.

7 0

3 years ago

Read 2 more answers

How is the process of finding equivalent ratios like the process of finding equivalent fractions

MaRussiya [10]

Ratios are fractions. Equivalent means equal, if you change one set of numbers, you have to change the second set of numbers so then that Ratio or Equivalent fraction stays equal on both sides.

3 0

3 years ago

I need some help pleaseeeee

Kruka [31]

Answer:

Step-by-step explanation:

The perimeter of the scale drawing is 18 inches. 72 divided by 18 is 4.

I hope this helps!

5 0

2 years ago

I need help with this!!​

I need help with this!!