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3 years ago

Help with Mathematics please. Thanks

Mathematics

2 answers:

jekas [21]3 years ago

8 0

The answer would be your last option, D, 168 cm sq

Hope this helped!

maks197457 [2]3 years ago

7 0

I got 168. Calculate the areas of all the shapes and add together

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I am thinking the answer is B but I am not positive

Yanka [14]

Answer:

I think so too

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3 years ago

Read 2 more answers

Graph the line whose x-intercept is 8 and whose y-intercept is -9.

eduard

Answer: attached image

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1 year ago

A sprinter who weighs 706 N runs the first 5.5 m of a race in 1.6 s, starting from rest and accelerating uniformly. What are the

zhenek [66]

Answer:

(a) Speed = 6.875 m/s

(b) Kinetic Energy = 1.70 kJ

Step-by-step explanation:

Given:

d = 5.5 m

t = 1.6 s

W = 706 N

Part (a)

Using the equation of motion with the assumption of zero initial speed:

$d = \frac{1}{2} ({v-0})t$

$5.5= \frac{1}{2} (1.6v)$

The speed of the sprinter then become:

$v = 6.875 m/s$

Part (b)

Convert the weight of the sprinter to mass:

$m = \frac{w}{g}$

$m = \frac{706}{9.8}$

$m = 72 kg$

KE (Kinetic Energy) can then be calculated as:

$KE = \frac{1}{2} mv^{2}$

$KE = \frac{1}{2} (72)(6.875)^{2}$

$KE = 1701.56 J = 1.70 kJ$

Part (c)

The change of the kinetic energy is equivalent to the work done by the sprinter. The average power P is the rate of the work done and can be calculated as

$P = \frac{KE}{t} \\\$

$P = \frac{1701.56}{1.6}$

$P = 1063.48 W = 1.06 kW$

5 0

3 years ago

Solve and graph the solution set<br> 4x + 5+x> 2 + 2x-3

qaws [65]

Answer:

I think it's true...

Step-by-step explanation:

3x>-6

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3 years ago

Cube root Of the mixed fraction -3 4/9

Gre4nikov [31]

To take a root of a fraction, take the root of the numerator and denominator separately

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Reduce the index of the radical and exponent with2

Reduce the index of the radical and exponent with 2

Then it’s gonna be 2/3 2over3
-3 2/3

Reduce the numbers with greatest common divisor 3
Then the answer will be -2

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2 years ago