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3 years ago

How can I draw it please

Mathematics

1 answer:

harkovskaia [24]3 years ago

8 0

First take a scale and make a line down measuring up to 10 centimetres.

Then label one side as A and another one at the opposite as B.

Then measure 10cm at your compass while letting the point of the compass stay at point A.

Then letting it stay at A make a arc upward and another below.

Then put your compass at B again taking the same measurement of 10 cm.

Then putting the compass at point B make an arc to cross the previous arcs .

Then make a line between the center of two arcs making a perpendicular.

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Jace has two number cubes the red cube has the following numbers on the faces 1,1,2,2,5,6 the blue number cube has the following

Lerok [7]

Answer: Jace is true

Step-by-step explanation:

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2 years ago

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Which of the following statements demonstrates the associative property of multiplication?

professor190 [17]

Associative property of multiplication means that it doesn't matter where the parentheses are placed because it will still be the same answer.

So your answer would be 1, 4 x (3 x 6) = (4 x 3) x 6

I hope this helps!

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3 years ago

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Harlamova29_29 [7]

Step-by-step explanation:

1. -9x - 3 - 3 + 2x

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3 years ago

Tennis elbow is thought to be aggravated by the impact experienced when hitting the ball. The article "Forces on the Hand in the

Gnoma [55]

Answer:

Step-by-step explanation:

Hello!

The objective is to study whether there is a greater force after impacting on one- handed backhand drive in advanced tennis players than in intermediate tennis players.

Sample 1: Advanced tennis players

X₁: Force (N) on the hand just after impact on a one- handed backhand drive for an advanced tennis player.

n₁= 6

X[bar]₁= 40.29 N

S₁= 11.29

Sample 2: Intermediate players

X₂: Force (N) on the hand just after impact on a one- handed backhand drive for an intermediate tennis player.

n₂= 8

X[bar]₂= 21.40

S₂= 8.30

Assuming that both variables have a normal distribution and both population variances are equal, to compare these two populations is best to do so trough their population means using a t-test for independent samples.

If the force is greater for the advanced players than for the intermediate players, then you'd expect the population mean for the advanced players to be greater than the population mean for the intermediate players:

H₀: μ₁ ≤ μ₂

H₁: μ₁ > μ₂

α: 0.05

$t= \frac{(X_[bar]_1-X[bar]_2)-(Mu_1-Mu_2)}{Sa\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } } ~~t_{n_1+n_2-2}$

$Sa= \sqrt{\frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2} } = \sqrt{\frac{5*127.51+7*68.92}{6+8-2} }= 9.66$

$t_{H_0}= \frac{(40.29-21.40)-0}{9.66\sqrt{\frac{1}{6} +\frac{1}{8} } } = 3.62$

Using the p-value approach, the decision rule is

If p-value ≤ α, reject the null hypothesis

If p-value > α, do not reject the null hypothesis

The p-value for this test is 0.00024, it is less than the level of significance, so the decision is to reject the null hypothesis.

This means that at a 5% significance level you can conclude that the average force experienced on the hand after a one-handed backhand drive for advanced players is greater than the average force experienced on the hand after a one-handed backhand drive for intermediate players.

I hope this helps!

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3 years ago

Two brothers build a pyramid-shaped fort. If the fort is 8 feet wide at its base, what expression could be used to calculate the

melisa1 [442]

Answer: An expression for the height is: H = (3/64)V

To start with, we will assume that it is a square pyramid, meaning all the sides of the base are 8 feet wide.

Now, we need the formula for the volume of a square pyramid.

V = BH/3

We know the area of the base, it is 8 x 8 = 64, so we can input that.

V = 64H/3 We can multiply by 3/64 to find an expression for the height of the fort.

(3/64)V = H

5 0

3 years ago

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How can I draw it please ​

How can I draw it please