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3 years ago

Simplify this expression (2c-7)(-7)

Mathematics

1 answer:

nevsk [136]3 years ago

7 0

<span>(2c-7)(-7)
= -24c+49

Hope this helps!</span>

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Find the area of the circle. use 3.14 for n.

White raven [17]

Answer:

ans 113.04

Step-by-step explanation:

we know that,

d=12

r=6

pie=3.14

A=Pie r^2

A=3.14*6^2

A=113.04

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3 years ago

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I need the graph, and the x-intercept

Elenna [48]

Answer:

X Intercept is 1/5 I think not sure

Step-by-step explanation:

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3 years ago

If the AREA of the rectangle at the right is 22 3/4 square inches, what is the width of the rectangle?

sergejj [24]

Answer:

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Step-by-step explanation:

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3 years ago

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kipiarov [429]

So for this, we will have to find the zeros (x-intercepts) of the equation. In this case, we will be using the quadratic formula, which is $x=\frac{-b+\sqrt{b^2-4ac}}{2a},\frac{-b-\sqrt{b^2-4ac}}{2a}$ (a = x^2 coefficient, b = x coefficient, c = constant). Using our info, our equation is such: $x=\frac{-3+\sqrt{3^2-4*(-16)*4}}{2*(-16)},\frac{-3-\sqrt{3^2-4*(-16)*4}}{2*(-16)}$

Firstly, solve the multiplications and the exponents: $x=\frac{-3+\sqrt{9+256}}{-32},\frac{-3-\sqrt{9+256}}{-32}$

Next, do the addition: $x=\frac{-3+\sqrt{265}}{-32},\frac{-3-\sqrt{265}}{-32}$

Next, plug in the equations into the calculator and your answer will be: $x=-0.41,0.60$

Since we can't have negative time in this situation, it can't be -0.41 seconds. Which means that the object is visible for about 0.60 seconds, or C.

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4 years ago

masha68 [24]

Answer:

2453t3

step-by-step explanation:

1324=56476=35=2424536=45346=5768=77=5=575=775

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3 years ago