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3 years ago

The temperature dropped 3C every hour for 5 hours right in integer that represents the change in temperature

Mathematics

1 answer:

Sindrei [870]3 years ago

6 0

Answer:

-15°C.

Step-by-step explanation:

They tell us that the temperature dropped 3 ° C every hour, therefore, the temperature change every hour = -3 ° C

They also tell us the total number of hours during which the temperature was changed = 5,

We have to:

The total change in temperature = change over an hour * total number of hours:

TC = - 3rd * 5

TC = -15 °

Then we can affirm that the integer representing the temperature change is -15 ° C.

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Which are the roots of the quadratic function f(q) = q^2 - 125? Select two options.

liubo4ka [24]

Answer:

None of the options are correct

Step-by-step explanation:

Given

$f(q) = q^2 - 125$

Required

The roots of the function

Since the function is a quadratic function; to get the roots of the function, f(q) must be equal to 0

$f(q) = q^2 - 125$ becomes

$0 = q^2 - 125$

Make $q^2$ the subject of formula

$125= q^2$

Rearrange

$q^2 = 125$

Take square roots of both sides

$\sqrt{q^2} = \sqrt{125}$

$q = \sqrt{125}$

Expand the square root of 125

$q = \sqrt{25 * 5}$

$q = \sqrt{25} * \sqrt{5}$

q = ±5 $* \sqrt{5}$

Split into 2

$q = 5 * \sqrt{5}$ or $q = -5 * \sqrt{5}$

$q = 5 \sqrt{5}$ or $q = -5 \sqrt{5}$

Hence, the roots of the quadratic function are $q = 5 \sqrt{5}$ or $q = -5 \sqrt{5}$

5 0

3 years ago

Read 2 more answers

33 1/3 % of what number is21?

Vladimir [108]

Answer:

33 1/3% of 21 is 63.64$ or rounded to the nearest whole number it is 64%

Step-by-step explanation:

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3 years ago

Is this "N2 + 3H2 → 2NH3" balanced or no?

romanna [79]

Yes, the equation “N2 + 3H2 = 2NH3” is balanced.

5 0

3 years ago

Please answer quick!!

IRINA_888 [86]

Answer:

mBC = 96°

mB = 55°

mC = 77°

mAB = 154°

Step-by-step explanation:

The angle mB inscribes the arc mAC, so we have:

$mB = mAC / 2$

$mB = 110 / 2 = 55\°$

The sum of internal angles of a triangle is 180°, so in the triangle ABC we have:

$mA + mB + mC = 180$

$48 + 55 + mC = 180$

$mC = 180 - 48 - 55$

$mC = 77\°$

Using again the property of inscribed angles, we have:

$mAB = 2*mC = 154\°$

$mBC = 2*mA = 96\°$

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3 years ago

Among 31- to 36-year-olds, 28% say they have written an editorial letter while under the influence of alcohol. Suppose six 31

Viefleur [7K]

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