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2 years ago

A phone company charges 50 cents per minute during the daytime and 10 cents per minute at night.

Mathematics

1 answer:

Gala2k [10]2 years ago

4 0

Answer:

You could talk on the phone for 200 minutes at night, or 40 minutes during the day.

For every 5 minutes you reduced your night time talking, you could talk during the day for 1 minute.

Step-by-step explanation:

0.50d + 0.10n < $20

0.50d < $20 --> d < 40 minutes

0.10n < $20 --> n < 200 minutes

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Caleb bought groceries and paid \$1.60$1.60dollar sign, 1, point, 60 in sales tax. The sales tax rate is 2.5\%2.5%2, point, 5, p

saveliy_v [14]

Answer:

Price of Caleb's groceries before tax = $64

Step-by-step explanation:

Let the price of groceries before tax be =$ $x$

Sales tax charged = $1.60

Sales tax rate =2.5%

Sales tax charged in terms of $x$ will be = 2.5% of the Original price of grocery = $2.5\% of x = 0.025\times x=0.025x$

So, we have,

$0.025x=1.60$

Dividing both sides by $0.025$

$\frac{0.025x}{0.025}=\frac{1.60}{0.025}$

∴ $x=64$

∴ Price of Caleb's groceries before tax = $64

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3 years ago

S2 Alg I Unit 3B Common Unit Assessment (MC&CR) / 5 of 11

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3 years ago

Use algebraic methods to prove that the given function has an x-intercept that is equal to its y-intercept. In your final answer

Llana [10]

Given the function, y = x/( x^2 – 1)

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y = x/(x^2 + x – x – 1)

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y = x/[(x – 1)(x + 1)]

In order to find the y -intercept, we set x = 0

When x = 0

y = 0/[(0 – 1)(0 + 1)]

y = 0.

Therefore, the y-intercept is zero.

In order to find the x -intercept, we set y = 0

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The only way the product of a division will be zero is if the numerator is zero

So, if x/[(x – 1)(x + 1)] = 0

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Therefore, the x-intercept is also zero.

Since both x- intercept and y- intercept equal zero,

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3 years ago

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Based on the above, the interval will their systolic pressure be lowest is 4pm to 5pm.

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From the function given above, the lowest systolic pression can be seen from 5 and 8 hours after taken the medication.

Therefore, this will fall into or between the interval of 2pm to 5pm.

And as such, looking at the question, the option that best fit into this time range is 4pm to 5pm.

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2 years ago

Two coins and one six sided number cube are tossed together

Triss [41]

Answer:

1/24

Step-by-step explanation:

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3 years ago