2 years ago

What expression is equivalent to -3 - (7.5 + 4)?

Mathematics

1 answer:

postnew [5]2 years ago

7 0

parenthesis first -3-11.5

then subtract so your answer is -14.5

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A plane can fly 51 miles in 5 minutes. At this rate, how many miles can the plane fly in 18 minutes?

Vlad [161]

Answer:

183.6

Step-by-step explanation:

51÷5=10.2 10.2×18=183.6

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2 years ago

Find the exact angular velocity in radians per hour wind W= 4.1 rpm

nataly862011 [7]

Answer:

1545.66 rad/h

Step-by-step explanation:

We need to find the angular velocity in rad/hour when wind is moving with a speed of 4.1 rpm.

We know that,

1 revolution = 2π rad

1 hour = 60 minute

So,

$4.1\ rmm = 4.1\times \dfrac{2\pi }{(\dfrac{1}{60})}\ rad/h\\\\=1545.66\ rad/h$

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2 years ago

OLEGan [10]

Answer:

Step-by-step explanation:

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2 years ago

I would like to know the right answer of this graph.

jeka94

Answer:

(6,-4)

Step-by-step explanation:

P(-2,2)

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2 - 6 = -4

4 0

2 years ago

I need help with a problem with solving by square roots in quadratic equation.

Readme [11.4K]

To solve for x, first, we add 3 to the given equation:

$\begin{gathered} 2(x+5)^2-3+3=44+3, \\ 2(x+5)^2=47. \end{gathered}$

Dividing by 2, we get:

$(x+5)^2=\frac{47}{2}.$

Therefore:

$x+5=\pm\sqrt{\frac{47}{2}}.$

Finally, subtracting 5 we get:

$x=\pm\sqrt{\frac{47}{2}}-5.$

Answer:

$x=\operatorname{\pm}\sqrt{\frac{47}{2}}-5.$

4 0

1 year ago