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3 years ago

Can someone help me with this question

Mathematics

2 answers:

Usimov [2.4K]3 years ago

8 0

Answer:

28h = 56

Divide by 28 on both sides

H = 2

8_murik_8 [283]3 years ago

5 0

Answer:

Step-by-step explanation:

28 per hour

56 per ? hours

Use the equation:

56 = 28 h

Divide 56 by 28

56 / 28 = 28 h /28

56/28 = 2

2 = h

Therefore, it will take 2 hours for the boat to cross a bay of 56 mil

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Which of the following are solutions to the following equation?

Alecsey [184]

Answer:

x=-7

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Step-by-step explanation:

we have

$2x^{2}-98=0$

Solve for x

Adds 98 both sides

$2x^{2}-98+98=0+98$

$2x^{2}=98$

Divide by 2 both sides

$2x^{2}/2=98/2$

$x^{2}=49$

take square root both sides

$x=\pm7$

therefore

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4 years ago

Find the slope of the line going through the pair of points: (11, 7), (-9, 8)

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Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

The height is 12 feet. The length is 15 feet. The hypotenuse is 20 feet. Which is true regarding the triangular frame?

olya-2409 [2.1K]

Answer:

The 3rd from the choices is correct.

4 0

3 years ago

1. The position of a particle moving along a coordinate axis is given by: s(t) = t^2 - 5t + 1. a) Find the speed of the particle

zimovet [89]

Answer: $\left | 2t-5\right |,\ 2,\ 2t-5$

Step-by-step explanation:

Given

Position of the particle moving along the coordinate axis is given by

$s(t)=t^2-5t+1$

Speed of the particle is given by

$\Rightarrow v=\dfrac{ds}{dt}\\\\\Rightarrow v=\dfrac{d(t^2-5t+1)}{dt}\\\\\Rightarrow v=\left | 2t-5\right |$

Acceleration of the particle is

$\Rightarrow a=\dfrac{dv}{dt}\\\\\Rightarrow a=2$

velocity can be negative, but speed cannot

$\Rightarrow v=\dfrac{ds}{dt}\\\\\Rightarrow v=\dfrac{d(t^2-5t+1)}{dt}\\\\\Rightarrow v=2t-5$

3 0

3 years ago

Please I need help immediately

just olya [345]

Answer:

Step-by-step explanation:

4x+6<= -54

4x <= -60

x <= -15 [The point -15 is included, so it must be a solid dot]

----------------

5x + 7 > -18

5x > -25

x > -5 [The point -5 is NOT included, so it should be an empty dot.]

Solution C seems the best.

4 0

3 years ago