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2 years ago

Simplify -19 + 13 + (-22)

Mathematics

2 answers:

Fudgin [204]2 years ago

6 0

19+13= 32 32/22 divide both by 2 and the answer is 15/11

Rudik [331]2 years ago

3 0

$-19+13+(-22)=-19+13-22=13-(19+22)=13-41=\boxed{-28}$

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You are purchasing carpeting for an office building. The space to be carpeted is 30 feet by 50 feet. Company A charges $2.99 per

Umnica [9.8K]

Total area is 30 by 50 feet=1500 ft^2
So per square foot charges are 2.99$ and 200 additional
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And another charging 19.99$ per square yard
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3 years ago

Find area in square units

OLEGan [10]

Step-by-step explanation:

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1 year ago

Jenny is diving into a swimming pool from a diving board. The expression below represents Jenny's vertical height x, in feet, ab

fredd [130]

Answer:

Step-by-step explanation:

The projectile motion of Jenny's dive can be represented by $-at^2 + v_0t + h_0$ where a is acceleration, v_0 is velocity, t is time, and h_0 is initial height.

Jenny's vertical height above the water is represented by $-16x^2+12x+10$ . 10 is h_0 and is Jenny's initial height.

4 0

3 years ago

PLS PLS HELP, I DONT WANT TO FAIL!!

Flura [38]

Answer:

2.0 seconds

Step-by-step explanation:

Given quadratic functions:

$\begin{cases}y=-7x^2+26x+3\\y=-6x^2 +23x+5\end{cases}$

To find the time, in seconds, that the balloons collided at the highest point, substitute one equation into the other equation and rearrange to equal zero:

$\begin{aligned}-6x^2+23x+5 & = -7x^2+26x+3\\-6x^2+23x+5+7x^2 & = -7x^2+26x+3+7x^2\\x^2+23x+5 & = 26x+3\\x^2+23x+5-26x & = 26x+3-26x\\x^2-3x+5& = 3\\x^2-3x+5-3& = 3-3\\x^2-3x+2& = 0\end{aligned}$

Factor the quadratic:

$\begin{aligned}x^2-3x+2 & = 0\\x^2-2x-x+2 & = 0\\x(x-2)-1(x-2) & = 0\\(x-1)(x-2) & = 0\\\end{aligned}$

Apply the zero-product property to solve for x:

$\implies (x-1)=0 \implies x=1$

$\implies (x-2)=0 \implies x=2$

Therefore, the balloons collided at 1 second and 2 seconds.

To find at which time the highest point of collision occured, substitute both values of x into one of the functions:

$f(1)=-6(1)^2 +23(1)+5=22$

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Therefore, the time, in seconds, that the balloons collided at the highest point is 2.0 seconds.

Learn more about quadratic systems of equations here:

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8 0

1 year ago

Read 2 more answers

Anybody know number 11??

PIT_PIT [208]

The property shown in #11 is the Associative Property of Addition.

In short, the associative property of addition states that no matter how an additive expression is grouped, the quantity will turn out the same. In this case, the answer is going to be equal whether you decide to add 5 and 8 first or 8 and 11 first.

5 0

3 years ago