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2 years ago

3. Simplify the expression.

Mathematics

2 answers:

aleksklad [387]2 years ago

8 0

A
Explaining: non thing.

Zarrin [17]2 years ago

4 0

Use MathPapa for a faster answer hehe

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What is the slope of the line y=2x+5?

sweet [91]

Answer:

The slope is 2

Explanation:

The equation is written in y=mx+b
M would always be the slope and b the y intercept

Hope this helps!!

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2 years ago

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Question 1 (1 point)

olya-2409 [2.1K]

For this case we can propose a system of equations:

x: Let the variable that represents the number of small cookies

y: Let the variable that represents the number of large cookies

According to the statement we have:

$x + y = 130\\2x + 3y = 310$

We multiply the first equation by -2:

$-2x-2y = -260$

We have the following equivalent system:

$-2x-2y = -260\\2x + 3y = 310$

We add the equations:

$-2x + 2x-2y + 3y = -260 + 310\\y = 50$

We look for the value of the variable "x":

$x = 130-y\\x = 130-50\\x = 80$

Answer:

They sold 80 small cookies and 50 large cookies

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2 years ago

Simplify (3x+3)(x-4)=?

Novosadov [1.4K]

(3x +3) (x - 4)
3x(x - 4) + 3(x - 4)
3x^2 - 12x + 3x - 12
3x^2 - 9x - 12

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3 years ago

Graph the equation f(x)=-10x^2

Zepler [3.9K]

The graph which you seek is attached to this answer.

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2 years ago

Find the length of the missing side.

ryzh [129]

Answer:

85 ft

Step-by-step explanation:

The Pythagorean theorem tells you the length of the hypotenuse (c) is related to the lengths of the legs (a, b) of a right triangle by ...

c^2 = a^2 +b^2

c^2 = (40 ft)^2 +(75 ft)^2 = 7225 ft^2

c = √(7225 ft^2) = 85 ft

The length of the missing side is 85 ft.

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2 years ago

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