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3 years ago

7

Working alone, it take jill 8.4 hours to pick forty bushels of apples. Maria can pick the same amount in 15 hours. If they work

together how long would it take them

1 answer:

konstantin123 [22]3 years ago

6 0

Answer:

answer is 5.4 hours (rounded)

Step-by-step explanation:

8.4 divided by 40 is 4.76

15 divided by 40 is 2.66

add those two up and it'll be 7.42

7.42 divided by 40 is 5.3908

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Given f(x) = x^2 − 2x − 5.

lukranit [14]

Answer:

$(x - 1)^2 - 6$

Step-by-step explanation:

You need to know:

Vertex form = $a(x -h)^2 + k$

The vertex is at

(h, k)

<u>Need to know about perfect squares </u>

<u>Need to know how to complete the square.</u>

-----------------------------------------------------------------------------------------

<u>To convert $x^2-2x-5$ you need to complete the square on the equation.</u>

Complete the Square $x^2 - 2x -5$

$x^2 - 2x -5$

$(x^2 - 2x) -5$

Divide -2 by 2 and then square it.

$\frac{-2}{2} = -1$

$-1^2 = 1$

Add the one to the parentheses and subtract the one from the 5

$(x^2 - 2x +1) -5 -1$

Square $(x^2 - 2x +1)$

$(x-1)^2$

Now we have

$(x - 1)^2 -5 -1$

<u>Next add</u> -5 - 1 = -6

$(x - 1)^2 - 6$

Our quadratic is in vertex form now.

Vertex form = $a(x -h)^2 + k$

our equation = $(x - 1)^2 - 6$

Vertex = (1, -6)

5 0

4 years ago

Simplify and explain your answer 4/7+2/5(1/5+1/10)

muminat

$\frac{4}{7}+\frac{2}{5}\cdot(\frac{1}{5}+\frac{1}{10})=\frac{4}{7}+\frac{2}{5}\cdot(\frac{2}{10}+\frac{1}{10})=\frac{4}{7}+\frac{2}{5}\cdot\frac{3}{10}=\frac{4}{7}+\frac{1}{5}\cdot\frac{3}{5}\\\\=\frac{4}{7}+\frac{6}{25}=\frac{4\cdot25}{7\cdot25}+\frac{6\cdot7}{25\cdot7}=\frac{100}{175}+\frac{42}{175}=\frac{142}{175}$

6 0

4 years ago

Fill in the blank. (5 + 2) × 10 = (5 × 10) + (2 × __ )

satela [25.4K]

Answer:

70=50+3.5=70 therefore the answer is 3.5

3 0

3 years ago

Camila has x quarters and y dimes. She has no less than 20 coins worth no more

san4es73 [151]

20 dimes; 0 quarters= $2.00; 20 dimes; 1 quarter= $2.25 and so on

3 0

3 years ago

Find the coordinates of the vertices of each figure after the given transformation.

cricket20 [7]

Answer:

<em>Z</em>'(1, 5), <em>K</em>'(1, 0), <em>C</em>'(−1, −1), <em>M</em>'(−3, 2)

Step-by-step explanation:

According to the 180°-rotation rule, you take the OPPOSITE of both the x-coordinate and y-coordinate:

180°: [<em>x</em>, <em>y</em>] → [<em>−x</em>, <em>−y</em>]

<em>Z</em>(−1, −5) → <em>Z</em>'(1, 5)

<em>K</em>(−1, 0) → <em>K</em>'(1, 0)

<em>C</em>(1, 1) → <em>C</em>'(−1, −1)

<em>M</em>(3, −2) → <em>M</em>'(−3, 2)

I am joyous to assist you anytime.

4 0

3 years ago