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3 years ago

Can someone pleaseeee help and if you’re correct i’ll give brainliest is it 6 inches ?

Mathematics

1 answer:

pantera1 [17]3 years ago

3 0

Answer:

You are correct, it would be 6 inches.

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(7-4) *5/3 I need help *= multiply /= division

VMariaS [17]

Answer:

Step-by-step explanation:

First u minus (because of these () ) witch is 3 and $\frac{5}{3}$ is a fraction so u do 3× $\frac{5}{3}$ (u see that its not a ÷ sign because its a fraction) witch equals to 5

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3 years ago

The amounts of paper waste generated in a region during two years were 41,300,000 tons and 50,500,000 tons. What was the total p

kipiarov [429]

That would be 9.18x10^5

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3 years ago

I can't figure out how to do (i + j) x (i x j)for vector calc

Vinil7 [7]

In three dimensions, the cross product of two vectors is defined as shown below

$\begin{gathered} \vec{A}=a_1\hat{i}+a_2\hat{j}+a_3\hat{k} \\ \vec{B}=b_1\hat{i}+b_2\hat{j}+b_3\hat{k} \\ \Rightarrow\vec{A}\times\vec{B}=\det (\begin{bmatrix}{\hat{i}} & {\hat{j}} & {\hat{k}} \\ {a_1} & {a_2} & {a_3} \\ {b_1} & {b_2} & {b_3}\end{bmatrix}) \end{gathered}$

Then, solving the determinant

$\Rightarrow\vec{A}\times\vec{B}=(a_2b_3-b_2a_3)\hat{i}+(b_1a_3+a_1b_3)\hat{j}+(a_1b_2-b_1a_2)\hat{k}$

In our case,

$\begin{gathered} (\hat{i}+\hat{j})=1\hat{i}+1\hat{j}+0\hat{k} \\ \text{and} \\ (\hat{i}\times\hat{j})=(1,0,0)\times(0,1,0)=(0)\hat{i}+(0)\hat{j}+(1-0)\hat{k}=\hat{k} \\ \Rightarrow(\hat{i}\times\hat{j})=\hat{k} \end{gathered}$

Where we used the formula for AxB to calculate ixj.

Finally,

$\begin{gathered} (\hat{i}+\hat{j})\times(\hat{i}\times\hat{j})=(1,1,0)\times(0,0,1) \\ =(1\cdot1-0\cdot0)\hat{i}+(0\cdot0-1\cdot1)\hat{j}+(1\cdot0-0\cdot1)\hat{k} \\ \Rightarrow(\hat{i}+\hat{j})\times(\hat{i}\times\hat{j})=1\hat{i}-1\hat{j} \\ \Rightarrow(\hat{i}+\hat{j})\times(\hat{i}\times\hat{j})=\hat{i}-\hat{j} \end{gathered}$

Thus, (i+j)x(ixj)=i-j

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1 year ago

On the first Saturday of every month, a local amusement park allows children under the age of 12 to ride for free. Which of thes

DochEvi [55]

Su is the only child under 12 years of age, therefore, she is only child entering for free.

5 0

3 years ago

60% expressed as a ration is 60 Over 100 . What is this as a fraction in its reduced form?

k0ka [10]

Answer:

Three-fifths

Step-by-step explanation:

First, let us reduce 60% to its simplest form as shown below:

60% = 60/100 = 6/10 = 3/5

We see that 60% in its simplest for is 3/5. This is written as Three-fifths

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4 years ago