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3 years ago

Please help me with this math thingy

Mathematics

1 answer:

Leona [35]3 years ago

6 0

The slope should be 1 because the points move up and to the side once every time it goes up. And it’s a positive slope not negative

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A regular hexagon is dilated by a scale factor of 2.5. What happens to the perimeter in this process?

Savatey [412]

Answer:

Step-by-step explanation:

perimeter of larger hexagon=2.5 perimeter of smaller hexagon

8 0

3 years ago

A sample of 23 newborns at the Dallas university health center had the following lengths in centimeters. The measurements have b

Andrej [43]

Answer:

Minimum - 46.4

First quartile - 48.8

Third quartile - 53.2

Median - 50.4

Maximum - 55.9

Step-by-step explanation:

If you write all the numbers down on a piece of paper and start crossing out from the beginning and end Ex. cross out 46.4 and 55.9 until you get to the middle (median) thats how you figure the median out. Continue to do that until you find the first quartile, and last quartile. The maximum and minimum are easy to find those are the biggest and smallest number in the group. To find the first and last quartile, you would do the same thing to find the median just do it from the median and go to the beginning or the end depending on which one you find first. Hope this helps! I learned how to do the crossing things from my old school :)

5 0

3 years ago

Large Number Calculations

pantera1 [17]

Answer:

19.2 kg

Step-by-step explanation:

Amount of Bananas consumed in US per year = 5.77 million metric tons

Since 1 million = $10^{6}$ and 1 metric ton = 1000 kg, we can write:

Amount of Bananas consumed in US per year = $5.77 \times 10^{6}$ metric tons

Amount of Bananas consumed in US per year = $5.77 \times 10^{6} \times 1000 = 5.77 \times 10^{9}$ kg

Number of people in US = 301 million = $301 \times 10^{6}= 3.01 \times 10^{8}$

We have to find how many kilograms of bananas are consumed per person in 1 year in US. For this we have to divide the total amount of bananas eaten in US per year with total number of people in US, which will be:

$\frac{5.77 \times 10^{9}}{3.01 \times 10^{8}} \\\\ = 19.2$

This means, 19.2 kilograms of bananas are eaten in US per person in a year.

3 0

3 years ago

What is the discriminant of 9х2 + 2 = 10x?

vredina [299]

$\bf 9x^2+2=10x\implies 9x^2-10x+2=0 \\\\[-0.35em] ~\dotfill\\\\ \qquad \qquad \qquad \textit{discriminant of a quadratic} \\\\\\ \stackrel{\stackrel{a}{\downarrow }}{9}x^2\stackrel{\stackrel{b}{\downarrow }}{-10}x\stackrel{\stackrel{c}{\downarrow }}{+2}=0 ~~~~~~~~ \stackrel{discriminant}{b^2-4ac}= \begin{cases} 0&\textit{one solution}\\ positive&\textit{two solutions}~~\checkmark\\ negative&\textit{no solution} \end{cases} \\\\\\ (-10)^2-4(9)(2)\implies 100-72\implies 28$

5 0

3 years ago

A line segment begins at the point (-4,-9) and ends at the point (21, 31.625).

KiRa [710]

Answer:

(6 , 7.25)

Step-by-step explanation:

Given in the question coordinates (-4,-9) and (21,31.625)

x1 = -4

y1 = -9

x2 = 21

y2 = 31.625

Ratio

a : b

2 : 3

Formula to use

x = x1 + $\frac{a}{a+b}$ (x2-x1)

y = y1 + $\frac{a}{a+b}$ (y2 -y1)

Plug values on the formula

x = -4 + $\frac{2}{2+3}(21+4)$

x = 6

y = -9 + $\frac{2}{2+3}(31.625+9)$

y = 7.25

Co-ordinates of the point which divide the line into 2:3 is

(6 , 7.25)

6 0

3 years ago