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3 years ago

1. If the temperature drops from 13.5°F to -13.5°F, what is the change in temperature?

Mathematics

1 answer:

mrs_skeptik [129]3 years ago

6 0

The change of temperature is 27 and the perimeter is 324

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Philip wants to buy a new video game system that costs

Law Incorporation [45]

Answer:

I think the answer I think the answer would be 14

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3 years ago

When multiplying two negative numbers, what kind of number does one always get for an answer?

harina [27]

Answer:

a positive number

Step-by-step explanation:

-(-) = +

for example, -1 * -1 = 1

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3 years ago

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What is the equation of a circle with center (2,-8) and radius 9?

leonid [27]

Answer:

9^2= (x+2)^2+(y+8)^2

Step-by-step explanation:

The equation is r^2=(x+h)^2+(y-k)^2

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3 years ago

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Find the domain over which the function y = x + 6x is monotonic increasing.

iragen [17]

Answer:

x > -3

$\sf (-3, \infty)$

Step-by-step explanation:

Domain: input values (x-values)

Monotonic increasing: always increasing.
A function is increasing when its graph rises from left to right.

The graph of a quadratic function is a parabola. If the leading term is positive, the parabola opens upwards. The domain over which the function is increasing for a parabola that opens upwards is values greater than the x-value of the vertex.

<u>Vertex</u>

Standard form of quadratic equation: $\sf y=ax^2+bx+c$

$\textsf{x-value of vertex}=\sf -\dfrac{b}{2a}$

Given function:

$\sf y=x^2+6x$

Therefore, x-value of function's vertex:

$\sf \implies x= -\dfrac{6}{2}=-3$

<u>Final Solution</u>

The function is increasing when x > -3

$\sf (-3, \infty)$

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3 years ago

You have 63 coins in your piggy bank, all quarters and nickels. The total amount is $12.55. How many quarters do you have?

Kaylis [27]

Answer:

Step-by-step explanation:

divide 1200 by 25 and u get 47 so we have 1 nickel to add the 5 cents.

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2 years ago