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3 years ago

14

Please help me with this ASAP

1 answer:

maw [93]3 years ago

8 0

Go to a graphing website mathwa; it can graph for you and tell you all kinds of good stuff about the graph; but make an account for details on HOW to graph, it's free
Good luck~~

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Evaluate the expression for (35+7-9x2

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Answer:

The answer is 24.

Step-by-step explanation:

I know this because you do PEMDAS, multiplication inside the parentheses, which gets you (35+7-18), an addition which gets you (42-18), and subtraction, which ultimately will get you 24 as the final answer.

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3 years ago

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Find the area of the shaded region. Round the the nearest tenth.

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Answer:

226.084 sq.m.

Step-by-step explanation:

Radius of circle = 18.6 cm

Area of sector = $\frac{\theta}{360^{\circ} }\pi r^2$

Area of sector = $\frac{123}{360} \times 3.14 \times (18.6)^2$

Area of sector = $371.157 m^2$

Area of triangle = $\frac{1}{2} \times a \times b \times Sin x$

a = OA = radius = 18.6 cm

b = OB = radius = 18.6 cm

x =123 °

Substitute the values in the formula

Area of triangle = $\frac{1}{2} \times 18.6 \times 18.6 \times Sin 123$

Area of triangle = $145.073 m^2$

So, Area of shaded region = Area of sector - Area of triangle

= $371.157 m^2-145.073 m^2$

= $226.084 m^2$

Hence the area of the shaded region is 226.084 sq.m.

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3 years ago

Select the correct answer. A model rocket was launched from the top of a building. The rocket's approximate height can be modele

garri49 [273]

Answer:

13 seconds.

Step-by-step explanation:

Given

$h = -4.9(t - 13)(t + 2).$

Required

Determine a reasonable solution for t

To do this, we equate h to 0.

$h = -4.9(t - 13)(t + 2).$ becomes

$0 = -4.9(t - 13)(t + 2).$

Divide through by -4.9

$0 = (t - 13)(t + 2).$

Reorder the expression

$(t - 13)(t + 2) = 0.$

Split

$t-13 = 0$ or $t + 2 = 0$

This gives:

$t = 13$ or $t = -2$

But time can't be negative, So:

$t = 13$

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2 years ago

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3 years ago

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V=BH/3
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