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2 years ago

Help i’m doing my exam

Mathematics

2 answers:

jolli1 [7]2 years ago

5 0

Dude I don’t think using this for an exam is it but ok

adell [148]2 years ago

5 0

Answer:

Step-by-step explanation:

The reason I think this is because y represents how far she has traveled from the town, 5 represents the starting distance from the town, x represents how long she has been traveling, and 25 represents how many miles she has traveled from her starting distance. So henry's equation should be y= 15x +16. Meaning that henry is ahead but Tasha traveled much faster than he did.

I hope this helped and if it is incorrect I apologize :(

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Can someone help, please

Allisa [31]

Answer:

$\frac{9}{5}$

Step-by-step explanation:

the slope is the change in y over the change in x

From the points given, your y's are 10 and 1.

From the points given, your x's are 7 and 2. To find the changes subtract them.

$\frac{10-1}{7-2}$ = $\frac{9}{5}$

4 0

8 months ago

Read 2 more answers

What’s 54/100 converted to a decimal

Levart [38]

The answer is .54
54/100=.54

7 0

3 years ago

Read 2 more answers

Solve each quadratic equation by completing the square. Give exact answers--no decimals.

denis-greek [22]

Answer:

$x_1 = \frac{3}{2} + \frac{1}{2}(\sqrt{47})i\\\\x_2 = \frac{3}{2} - \frac{1}{2}(\sqrt{47})i\\\\$

Step-by-step explanation:

In this problem we have the equation of the following quadratic equation and we want to solve it using the method of square completion:

$x ^ 2 -3x +14 = 0$

The steps are shown below:

For any equation of the form: $ax ^ 2 + bx + c = 0$

1. If the coefficient a is different from 1, then take a as a common factor.

In this case $a = 1$ .

Then we go directly to step 2

2. Take the coefficient b that accompanies the variable x. In this case the coefficient is -3. Then, divide by 2 and the result squared it.

We have:

$\frac{-3}{2} = -\frac{3}{2}\\\\(-\frac{3}{2}) ^ 2 = (\frac{9}{4})$

3. Add the term obtained in the previous step on both sides of equality:

$x ^ 2 -3x + (\frac{9}{4}) = -14 + (\frac{9}{4})$

4. Factor the resulting expression, and you will get:

$(x -\frac{3}{2}) ^ 2 = -(\frac{47}{4})$

Now solve the equation:

Note that the term $(x -\frac{3}{2}) ^ 2$ is always > 0 therefore it can not be equal to $-(\frac{47}{4})$

The equation has no solution in real numbers.

In the same way we can find the complex roots:

$(x -\frac{3}{2}) ^ 2 = -(\frac{47}{4})\\\\x -\frac{3}{2} = \±\sqrt{-(\frac{47}{4})}\\\\x = \frac{3}{2} \±\frac{1}{2}\sqrt{-47}\\\\x = \frac{3}{2} \±\frac{1}{2}(\sqrt{47})i\\\\x_1 = \frac{3}{2} + \frac{1}{2}(\sqrt{47})i\\\\x_2 = \frac{3}{2} - \frac{1}{2}(\sqrt{47})i\\\\$

7 0

3 years ago

Read 2 more answers

Fill in the blanks so that the equation has infinitely many solutions. 7x + 2 + x = __(2x + __) Options: 1/4 and 1/2 and 2 and 4

Cloud [144]

Answer:

4 and 1/2

Step-by-step explanation:

7x + 2 +x = 8x + 2

8x + 2 = 4(2x + 1/2)

5 0

2 years ago

About what percent of the data are greater than 20?

Pachacha [2.7K]

About 25 percent of the data are greater than 20.(option a)

About 50 percent of the data are less than 15. (option b)

20 is wrongly interpreted as the median. 20 is the third quartile. The data between 11 and 20 is 50%.

<h3>How can a box-and-whisker plot be interpreted?</h3>

A box plot is used to study the distribution and level of a set of scores. The scores are distributed into 4 groups. Each group has a value of 25%

The box plot consists of two whiskers and a box. The first whisker represent the minimum value. The second whisker represents the maximum number.

On the box, the first line to the left represents the lower (first) quartile. 25% of the score represents the lower quartile. The next line on the box represents the median. 50% of the score represents the median. The third line on the box represents the upper (third) quartile. 75% of the scores represents the upper quartile.

20 is the third quartile. Score greater than 20 is 25% (100% - 75%)

15 is the median. Scores less than 15 is 50% (100 - 50%),

To learn more about box plots, please check: brainly.com/question/27215146

#SPJ1

3 0

11 months ago