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3 years ago

Overnight the temperature dropped 1.3 degrees every hour how many hours did it take the temperature to drop 7.8 degrees

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

7 0

6 and 1/2 hours in total. divide 7.8 by 1.3

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Given the figure above, determine

tensa zangetsu [6.8K]

Answer: Angle 2 = 47 degree

Explanation:

Proof that triangle ACB ~ triangle CBD

Angle ABC = Angle CBD (same angle)

If one pair of the angle is the same then the other pair should also be equal because both the triangle are Isosceles.

=> angle ACD = Angle CDB

Therefore, triangle ACB ~ triangle CBD (AA)

=> angle C = Angle A

But angle A = 47 degree

Therefore, Angle C = Angle 2 = 47 degree

6 0

3 years ago

If f(x)=-x^2+6x-1 and g(x) =3x^2-4x-1, find (f-g)(x)

asambeis [7]

Answer:

Step-by-step explanation:

Given,

$f(x)=-x^{2} +6x-1\\g(x)=3x^{2} -4x-1$

we know,

(f-g)(x)=f(x)-g(x)

So, here we get

(f-g)(x)

=f(x)-g(x)

= $-x^{2} +6x-1-(3x^{2} -4x-1)$

= $-x^{2} +6x-1-3x^{2} +4x+1$

= $-x^{2}-3x^{2} +6x+4x-1+1$

= $-4x^{2} +10x$

So, the answer is

$-4x^{2} +10x$

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3 years ago

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What is the vertex of a circle in the equation of a circle?

anastassius [24]

<span> Move to the right side of the </span>equation<span> by adding to both sides.</span>

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4 years ago

What is the slope of the line through (2,-2)and(9,3)?

Arturiano [62]

Answer:

5/7

Step-by-step explanation:

y2-y1/x2 -x1

3 - (-2)/9-2

3+2/9-2

5/7

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3 years ago

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Describe this number line and the numbers and fractions shown.

Mariana [72]

Answer:

The number line goes from negative two to two.

The numbers shown by the number line (-2, -1, 0, 1 and 2) are all integers.

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4 years ago

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