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2 years ago

If f =3x+5and g(x)=-2x^2-5x+3, find (f+g)(x)

Mathematics

1 answer:

wel2 years ago

7 0

Answer:

Step-by-step explanation:

(f+g)x = 3x+5-2x^2-5x+3 = -2x^2-2x+2

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Please help me!!!!! find the area of a square with a side length of 24.6 km

lubasha [3.4K]

It would be 24.6 ×24.6
it's 605.16

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2 years ago

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SSSSS [86.1K]

(B)
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2 years ago

Read 2 more answers

Which expression is equivalent to -3(4 - 6x)? show steps please

Ket [755]

Answer:

-3(4 - 6x)

-12 +18x

=18x - 12

Step-by-step explanation:

You multiple the negative 3 with positive 4 to get negative 12.

An you also multiple the negative 3 with negative 6x (a negative multiple a negative changes into positive) giving you 18x as your answer

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3 years ago

A hot air balloon is cruising at an altitude of 120 meters above the ground when it begins its descent. The balloon descends at

Gekata [30.6K]

Answer:

120 - 4.5t= 75

t = 10 minutes

Step-by-step explanation:

the equation :

120 - 4.5t= 75

the solution:

-4.5 t = 75-120

-4.5t = -45

t = -45/(-4.5) = 10 minutes

4 0

2 years ago

A square has a diagonal length of 10 ft. Draw a diagram and determine the perimeter of the square.

denpristay [2]

The perimeter of the square is: $20\sqrt2$ ft

Step-by-step explanation:

The picture is attached with the answer.

the diagonal of a square divides it into two right angled-triangles.

We can use one of the triangle to find the length of side as the diagonal will be the hypotenuse of the triangle

Let a be the side of the square, then according to Pythagoras theorem

$d^2=a^2+a^2\\(10)^2 = 2a^2\\2a^2=100$

Dividing both sides by 2

$\frac{2a^2}{2}=\frac{100}{2}\\a^2=50$

Taking Square root on both sides

$\sqrt{a^2}=\sqrt{50}\\a=\sqrt{25*2}\\a=\sqrt{5^2 * 2}\\a=5\sqrt{2}\ ft$

Now,

$P = 4a\\P = 4 * 5\sqrt{2}\\=20\sqrt{2}\ ft$

Hence,

The perimeter of the square is: $20\sqrt2$ ft

Keywords: Perimeter, Pythagoras Theorem

Learn more about Square at:

#learnwithBrainly

5 0

3 years ago