3 years ago

Help me with my work plz i’m not good at math

Mathematics

1 answer:

Rudik [331]3 years ago

4 0

42+35+32+51=160
160/4=40
C

Also some one please answer my history question!!!!

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Step-by-step explanation:

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3 years ago

A soccer player uses her head to hit a ball up in the air from a height of 2 meters with an initial vertical velocity of 5 meter

Mandarinka [93]

Answer:1.32 s

Step-by-step explanation:

Given

The initial height of ball H=2 m

Initial velocity u=5 m/s

Height of ball at any instant is given by

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The ball will hit the ground when h=0

$-4.9t^2+5t+2=0\\4.9t^2-5t-2=0\\t=\dfrac{5\pm\sqrt{25+4(4.9)(2)}}{2\times 4.9}\\t=\dfrac{5\pm\sqrt{64.2}}{9.8}\\t=\dfrac{5+8.01}{9.8}=1.32\ s\quad\text{Neglecting negative value of t}$

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3 years ago

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Assoli18 [71]

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Step-by-step explanation:

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3 years ago

Jonearns7%commissionasasalesperson.Hesoldarobotthatcost$588.00.HowmuchcommissiondidJonearn?

SpyIntel [72]

Multiply 588 by 0.07 then take that number and subtract it from the 588 (I’m 99 percent sure)

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3 years ago

Fellow 9. What is the distance between (-3, 4) and (5, 1)?

zhannawk [14.2K]

Answer: The exact distance is $\sqrt{73}$ units

The approximate distance is roughly 8.5440037 units

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Explanation:

Use the distance formula

$(x_1,y_1) = (-3,4)\\\\(x_2,y_2) = (5,1)\\\\d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-3-5)^2 + (4-1)^2}\\\\d = \sqrt{(-8)^2 + (3)^2}\\\\d = \sqrt{64 + 9}\\\\d = \sqrt{73}\\\\d \approx 8.5440037\\\\$

As an alternative, you can use the pythagorean theorem.

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3 years ago