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SVETLANKA909090 [29]
2 years ago
13

Calculate the average speed for the following sections on the graph.

Mathematics
2 answers:
Temka [501]2 years ago
5 0

Answer:

a to b is 20m/s I'm in k12 and I got the same question but I don't know for c to d yet

Step-by-step explanation:

A =0

B=200

T=10s

200 divided by 10 is 20m/s

and for the question at the bottom, the answer is c bc c to d is accelerating

Dimas [21]2 years ago
3 0

Answer:

A to B = 2000 m/s

C to D = 30,000m/s

Step-by-step explanation:

A to B is 10secs and the distance is 200m so you multiply them and you get 2000m/s

C to D is 60secs and the distance is 500m so you multiply and you get 30,000m/s

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WILL GIVE BRAINLIEST IF CORRECT NOT TOO HARD JUST IN A RUSH!!!!!
STALIN [3.7K]

Answer:

22.5

Step-by-step explanation:

If you divide y/x each ticket costs $2.5, so multiply 2.5x9 and that's your answer. :)

3 0
3 years ago
An education researcher claims that 58​% of college students work​ year-round. In a random sample of 400 college​ students, 232
Hatshy [7]

Answer:

The proportion of college students who work​ year-round is 58%.

Step-by-step explanation:

The claim made by the education researcher is that 58​% of college students work​ year-round.

A random sample of 400 college​ students, 232 say they work​ year-round.

To test the researcher's claim use a one-proportion <em>z</em>-test.

The hypothesis can be defined as follows:

<em>H</em>₀: The proportion of college students who work​ year-round is 58%, i.e. <em>p</em> = 0.58.

<em>Hₐ</em>: The proportion of college students who work​ year-round is 58%, i.e. <em>p</em> ≠ 0.58. C

Compute the sample proportion as follows:

 \hat p=\frac{232}{400}=0.58

Compute the test statistic value as follows:

 z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}=\frac{0.58-0.58}{\sqrt{\frac{0.58(1-0.58)}{400}}}=0

The test statistic value is 0.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected.

Compute the p-value for the two-tailed test as follows:

 p-value=2\times P(z

*Use a z-table for the probability.

The p-value of the test is 1.

The p-value of the test is very large when compared to the significance level.

The null hypothesis will not be rejected.

Thus, it can be concluded that the proportion of college students who work​ year-round is 58%.

6 0
3 years ago
Solve 3x-2/4 - 2x+5/3 = 1-x/6
Nadya [2.5K]

Answer:

Pasos para resolver una ecuación lineal

3x−2/4−2x+5/3=1−x/6

Multiplique ambos lados de la ecuación por 12, el mínimo común denominador de 4,3,6.

36x−3×2−24x+20=12−2x

Multiplica −3 y 2 para obtener −6.

36x−6−24x+20=12−2x

Combina 36x y −24x para obtener 12x.

12x−6+20=12−2x

Suma −6 y 20 para obtener 14.

12x+14=12−2x

Agrega 2x a ambos lados.

12x+14+2x=12

Combina 12x y 2x para obtener 14x.

14x+14=12

Resta 14 en los dos lados.

14x=12−14

Resta 14 de 12 para obtener −2.

14x=−2

Divide los dos lados por 14.

x=

14

−2

​

Reduzca la fracción  

14

−2

 a su mínima expresión extrayendo y anulando 2.

x=−

7

1

Step-by-step explanation:

7 0
2 years ago
Please help me !!!
ad-work [718]

Answer:

x = 47

2x+6 = 100  which is the angle measure

Step-by-step explanation:

The angles are vertical and vertical angles are equal

2x+6 = 100

Subtract 6 from each side

2x+6-6 =100-6

2x = 94

Divide by 2

2x/2 = 94/2

x =47

Now to find the measure of 2x+6

We know that it is equal to 100

so 2x+6 = 100

6 0
3 years ago
Find the value of x, y, and z in the parallelogram below.
ANEK [815]

Answer:

X= 67

Y= 121

Z= 80

Step-by-step explanation:

To find Y:

(y-9) and 112 are congruent so

y-9=112

y=121

To find Z: (consecutive)

180=121+z+3

180=124+z (combine like terms)

subtract 124 to cancel and move to other side of equation

z= 80

To find X: (consecutive)

180=112+x+1

180=113+x (combine like terms)

subtract 113 to cancel out and move to their side of equation

x = 67

5 0
2 years ago
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