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3 years ago

HELPPP PLS THIS IS DUE TOMARRROW

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

8 0

Answer:

(-10)+3 1/2 = -6 1/2

Step-by-step explanation:

It first points to the left. Which means subtracting. It shows that it starts at zero so, keep that in mind. Then it points to the right which means your adding 3 1/2. So you would start at zero and subtract 10. (-10). Then you would add 3 1/2. +3 1/2

(-10) + 3 1/2

To then make -6 1/2

kupik [55]3 years ago

6 0

Answer:

It is second bubble

for explanation

○One

○Two

○Three

○Four

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A NASA test rocket launch is set up so that once the rocket takes off from a landing platform,It will splash down safely in a bo

Aleonysh [2.5K]

Answer:

237.87 m/s

Step-by-step explanation:

This is a projectile question.

We use the equation for the range of a projectile since we are given the horizontal distance and angle of projection.

So, R = U²sin2θ/g where R = range, U = initial speed of rocket, θ = projection angle and g = acceleration due to gravity = 9.8 m/s².

Since it is given that the water body is 5 km away, R = 5 km = 5000 m and θ = 30°

So, making U subject of the formula, we have that

U = √(gR/sin2θ)

So, substituting the values of the variables, we have

U = √[9.8 m/s² × 5000 m/sin(2 × 30°)]

U = √[49000 m²/s²/sin60°]

U = √[49000 m²/s²/0.8660]

U = √[56,580.33 m²/s²]

U = 237.87 m/s

So the minimum speed of the rocket necessary to make sure the rocket reaches the water surface is U = 237.87 m/s

6 0

3 years ago

Help with this please!!

zhenek [66]

line symmetry is a perfect reflection of a shape when cut in half. imagine a line down the shape. its the square, the triangle and the trapizoid.

5 0

3 years ago

A group of students at a high school took a standardized test. The number of students who passed or failed the exam is broken do

Anuta_ua [19.1K]

Answer:

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

Step-by-step explanation:

Independent events:

Two events, A and B are independent, if:

$P(A \cap B) = P(A)P(B)$

Probability of male:

58 + 14 = 72 males out of 58 + 14 + 98 + 11 = 181

P(male) = 72/181 = 0.3978

Probability of failling:

14 + 11 = 25 students fail out of 181. So

P(fail) = 28/181 = 0.1381

Multiplitication of male and failling:

0.3978*0.1381 = 0.0549

Probability of being male and failing:

14 out of 181. So

14/181 = 0.0773

Different probabilities, so not independent.

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

5 0

3 years ago

What is the sum of the multiples of 3 and 999, inclusive

Phantasy [73]

Answer:

166,833

Step-by-step explanation:

(

−

)

999

(

−

)

999

−

999

333

We can now use the formula

(

−

)

to determine the sum.

333

(

)

(

333

−

)

333

(

1002

)

333

166

833

Hopefully this helps!

8 0

4 years ago

HELP ASAP. 20 POINTS.

Gnoma [55]

The answer is D, my friend.

3 0

4 years ago

Read 2 more answers