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3 years ago

Please help!

Mathematics

1 answer:

Gre4nikov [31]3 years ago

7 0

Answer: 0.3 N

Step-by-step explanation:

Given

Mass of marble is $m=10g\ \text{or}\ 0.01\ kg$

Required acceleration $a=30\ m/s^2$

Force is given as the product of mass and acceleration

$F=ma$

Put the values

$F=0.01\times 30=0.3\ N$

A force of $0.3\ N$ is required to launch the marble.

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A cube and a square pyramid were joined to form the composite solid. A cube with side lengths of 12 inches. A square pyramid wit

Zepler [3.9K]

Answer:

total surface area = 936 in²

Step-by-step explanation:

total surface area = surface area of the pyramid + surface area of the cube

1. surface area of the pyramid = 4 * area of lateral triangle side

area of lateral triangle side = 12 * 9 /

area of lateral triangle side = 54 in²

2. surface area of the pyramid = 4 * 54

surface area of the pyramid = 216 in²

3. surface area of the cube = 5 * (12 x 12)

-surface area of the cube = 720 in²

therefore, the total surface area = 216 in² + 720 in²

total surface area = 936 in²

8 0

4 years ago

Read 2 more answers

Find the value of x. a.17 b.12 c.40 d.18 e.none are correct

Natali5045456 [20]

Answer:

b.12

Step-by-step explanation:

Key skills needed: Interior Angle Measure Theorem, Equation Creation

1) First, we need to classify this shape. It has 7 sides, which means that we can use the Interior angle Theorem to find out the sum of all the interior angle measures

The theorem is: $S = (n - 2)180$

S is the sum of all interior angle measures

n is the number of sides of the polygon

2) With this, we can plug in 7 for "n" (Since the figure has 7 sides) and get:

---> $S = (7-2)180$

---> (7-2) is 5 since 7 - 2 = 5 so --> $S = 5(180)$

---> 5(180) is the same as 5 x 180 which is 900 so --> $S = 900$

This means that the sum of all interior angles is 900 degrees.

3) Now, we have to find out the sum of all the angles that they gave us so:

---> $10x + 10x + 9 + 133 + 9x + 14 + 12x - 9 + 10x + 5 + 136 = 900$

The left side is the sum of all interior angles in the shape, and the right side is what the sum should be when expressed as a number.

4) We have to combine all like terms on the left side:

---> $10x + 10x + 9x + 12x + 10x = 51x$

---> $9 + 133 + 14 -9+5+136 = 288$

5) This means that ---> $51x + 288 = 900$

Subtract 288 from both sides and get:

---> $51x = 612$ (900-288 = 612)

Then divide by 51 from both sides and get:

---> $x = 12$ (612 ÷ 51 = 12)

Therefore b.12 is your answer.

Hope you understood and have a nice day!! :D

8 0

3 years ago

Help asap!! (i’ll give u brainliest)

Gnesinka [82]

Answer: 3

Step-by-step explanation:

6 0

3 years ago

Breyers is a major producer of ice cream and would like to test the hypothesis that the average American consumes more than 17 o

zhenek [66]

Answer:

The p-value would be 0.0939

Step-by-step explanation:

We can set a standard t-test for the Null Hypothesis that $H_0: 18.2\geq 17$

The test statistic then takes the form

$t=\frac{18.2-17}{3.9/\sqrt{15}}=1.317$

with this value we then can calculate the probability that is left to the right of this value $P(X>1.317)$ . From theory we know that t follows a standard normal distribution. Then $P(X>1.317)=0.0939$ which is smaller than the p-value set by Breyers of 0.10