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2 years ago

5/8 divided by -8/9 thanks if you help me

Mathematics

2 answers:

liubo4ka [24]2 years ago

8 0

5/8*-9/8 = -5/9

Opposite when dividing and then multiply!

postnew [5]2 years ago

8 0

Answer:

-45/64 (about 0.70 as a decimal)

Step-by-step explanation:

5/8/-8/9 = 5 * 9 / - 8 * 8 = 45/-64

45/-64 = -45 / 64 (fraction rules) :)

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Jack and Diane were saving money to go to a rock n roll concert. They need at least $750 in order to go if you count their gas,

nataly862011 [7]

Answer:

$\left\{\begin{array}{l}y\le 4x\\ \\x\ge 10\\ \\50x+25y\ge 750\end{array}\right.$

Step-by-step explanation:

Let x represents the number of nights Jack worked and y represents the number of nights Diane worked.

1. The number of nights Diane is scheduled to work is no more than four times the number of nights Jack is scheduled to play. Then

$y\le 4x$

2. Diane will work at least 10 times before the concert. Then

$x\ge 10$

3. Jack earns $50 per night that he plays, then he earned $50x in x nights. Diane earns $25 each night she works, then she earns $25y in y nigths. They need at least $750, so

$50x+25y\ge 750$

4. We get the following set of constraints to model the problem:

$\left\{\begin{array}{l}y\le 4x\\ \\x\ge 10\\ \\50x+25y\ge 750\end{array}\right.$

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3 years ago

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Because the plane was going down, the rate of change would be negative.

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2 years ago

A triangle has vertices at (4,3), (-2,4), and (-4, 2). What are the coordinates of the vertices of the image

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Step-by-step explanation:

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Estimating this to the nearest whole number would be = 2,000,000,000,000,000,000,000,000,000 kg (rounding up the the "1,898")

To express this in scientific notation form, simply count how many zeros we have to the nearest whole number, 2.

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