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3 years ago

!! help me pretty please !!

Mathematics

2 answers:

Lerok [7]3 years ago

6 0

Answer do we just answer the question or we also have to do something else?

Step-by-step explanation:

Mashutka [201]3 years ago

6 0

Answer:

Step-by-step explanation:

0-2 is 30%

3-4 is 20%

5-6 is 20%

7-9 is 30%

so by his estimations a song bird would come up next at 20% of the time

or in 5 birds 100% percent of the time, but we have to look at his empirical data to see how accurate that is hmmm maybe a good time for a spread sheet or Mat Lab ??? hmm

13/20 is what I counted.. or out of 100

that's 13*5 or 65%

I'm not sure what form they want it in.. percent.. fraction hmm hope that will help :/

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Solve each system by elimination. −5x − 10y = 15 −3x + 10y = 25

yaroslaw [1]

Answer:

$\boxed{x = -5~~and~~ y =1}$

Step-by-step explanation:

-5x - 10y = 15

-3x + 10y = 25 +

-8x = 40

$x = \frac{40}{-8}$

x = -5

Substitute the value of x to one of equations

-5(-5) - 10y = 15

25 - 10y = 15

-10y = 15 - 25

-10y = -10

$y = \frac{-10}{-10}$

y = 1

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3 years ago

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Ahat [919]

Answer:

each side of the hexagon measures 40 cm (which agrees with answer B)

Step-by-step explanation:

Recall that a regular hexagon has six equal sides, therefore, each side would be one sixth of the 240 cm:

each side of the hexagon = 240 cm / 6 = 40 cm

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3 years ago

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leonid [27]

Answer:

I, I

Step-by-step explanation:

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3 0

3 years ago

In a high school, 2/5 of the girls make up 150 students.

poizon [28]

Answer:

375 girls

Step-by-step explanation:

Let the number of girls in the school be y.

Then, we can write the equation:

$\frac{2}{5} y = 150$

We can now solve for y by multiplying both sides by

$\frac{5}{2}$

$\frac{5}{2} \times \frac{2}{5} y = 150 \times \frac{5}{2}$

$\implies \: y = 75 \times 5$

$y = 375$

Therefore there are 375 girls in the school.

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MissTica

Answer:

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