$0.25 per ounce mags spent a total of $2.65 on pineapple

Mathematics

1 answer:

Anastasy [175]3 years ago

5 0

Answer:

10.6 oz

Step-by-step explanation:

2.65/0.25=10.6

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In certain county, the number of charter schools is 4 less than twice the number of alternative schools. We know that there are

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We have that if we add 4 to the number of charter schools, we have twice the number of the alternative schools in the county. Hence, twice the alternative schools are 52. The half of this is 26. Hence, there are 26 alternative schools in the county. These steps correspond to solving the expression 48=4+2x.

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3 years ago

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The height of a stuntperson jumping off a building that is 20 m high is modeled by the equation h = 20 – 5t2, where t is the tim

Leno4ka [110]

<h2>Time Interval : 1 sec to 1.414 sec</h2>

Step-by-step explanation:

The height of the stuntperson jumping off a $20\text{ }m$ is modelled as $h\text{ }=\text{ }20\text{ }-\text{ }5t^{2}$ . Here $t$ is the time in seconds.

We have to record the person when he is between the heights $15\text{ }m\text{ and }10\text{ }m$ from the ground.

When $h\text{ }=\text{ }15$ ,

$15\text{ }=20\text{ }-\text{ }5t^{2}\\5t^{2}\text{ }=\text{ }5\\t^{2}\text{ }=\text{ }1\\t\text{ }=\text{ }1\text{ }sec$

When $h\text{ }=\text{ }10$ ,

$10\text{ }=20\text{ }-\text{ }5t^{2}\\5t^{2}\text{ }=\text{ }10\\t^{2}\text{ }=\text{ }2\\t\text{ }=\text{ }\sqrt{2}\text{ }=\text{ }1.414\text{ }sec$

The stuntperson is at height $15\text{ }m$ at $t\text{ }=\text{ }1\text{ }sec$ , and is at height $10\text{ }m$ at $t\text{ }=\text{ }1.414\text{ }sec$ .