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3 years ago

9

HELP ME PLEASE!!! ASAP!!!!!! What was the average speed of this journey?

2 answers:

Alexxandr [17]3 years ago

7 0

Answer:

B

Step-by-step explanation:

Take total displacement and divide by the time it took.

Eduardwww [97]3 years ago

6 0

It is the last one 2.55m/s

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Will mark brainliest pls answer

alukav5142 [94]

Y =0.5x +2 The y-intercept is found by the coordinates (0,2) and the change is 0.5

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2 years ago

A village fete has a children’s running race each year, run in heats of up to ten children. For each heat the first three contes

bekas [8.4K]

Answer: 1) 1/3,654 2) 3/406 3) 72,684,900,288,000 4) 120

<u>Step-by-step explanation:</u>

1) First and Second and Third

$\dfrac{3\ total\ prizes}{29\ total\ people}\times \dfrac{2\ remaining\ prizes}{28\ remaining\ people}\times \dfrac{1\ remaining\ prize}{27\ remaining\ people}=\dfrac{6}{21,924}\\\\\\.\qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \quad =\large\boxed{\dfrac{1}{3,654}}$

2) First and Second

$\dfrac{3\ total\ prizes}{29\ total\ people}\times \dfrac{2\ remaining\ prizes}{28\ remaining\ people}=\dfrac{6}{812}=\large\boxed{\dfrac{13}{406}}$

$3)\quad \dfrac{29!}{(29-10)!}=\large\boxed{72,684,900,288,000}$

$4)\quad _{10}C_3=\dfrac{10!}{3!(10-3)!}=\large\boxed{120}$

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3 years ago

Solve, 3y(4y−1)−2y(6y−5)=9y−8(3+y)

igomit [66]

Answer:

3y(4y-1)-2y(6y-5)=9y-8(3+y)

12y∧2-3y-12y∧2+10y=9y-24-8y

12y∧2-12y∧2-3y+10y=9y-8y-24

7y=y-24

7y-y=-24

6y=-24

y=-24/6=-4

Step-by-step explanation:

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2 years ago

Factor completely<br> -2x^4+6x^3+8x^2

vlada-n [284]

Answer:

-2x²(x + 1)(x - 4)

Step-by-step explanation:

Hello!

Factor:

$-2x^4 + 6x^3 + 8x^2$
$-2x^2(x^2 - 3x - 4)$ Take out GCF

Think: What numbers add up to -3 and multiply to -4?

Answer: -4 and 1

Continue:

$-2x^2(x^2 - 3x - 4)$
$-2x^2(x^2 - 4x + x - 4)$
$-2x^2(x(x - 4) + 1(x - 4))$ Factor by Grouping
$-2x^2(x + 1)(x - 4)$

The complete factored form is -2x²(x + 1)(x - 4)

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1 year ago

Regina purchased 1.75 pounds of turkey breast from her local deli for $5.99 per pound. To the nearest cent, how much did she spe

WITCHER [35]

5.99 per pound * 1.75 pounds purchased = $10.4825. If you round it, she spent $10.48

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2 years ago

Read 2 more answers