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3 years ago

3 × ? = 24 tenths (random words i have to write to ask my question just ignore pls )

Mathematics

2 answers:

storchak [24]3 years ago

4 0

Answer:

3 x 0.8 = 2.4

Step-by-step explanation:

3 × ? = 24 tenths

3 x ? = 2.4

? = 0.8

3 x 0.8 = 2.4

34kurt3 years ago

4 0

Answer:

Step-by-step explanation:

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3 years ago

Landon is going to invest in an account paying an interest rate of 4.3% compounded continuously. How much would Landon need to i

Mazyrski [523]

Answer:

$ 6,189.18

Step-by-step explanation:

From the above question, we can deduce that we are meant to find the Principal (Initial Amount ) invested.

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5 0

3 years ago

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Please answer I need help to pass

Goryan [66]

Answer:

the answer is A

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3 years ago

All vectors are in Rn. Check the true statements below:

Oduvanchick [21]

Answer:

A), B) and D) are true

Step-by-step explanation:

A) We can prove it as follows:

$Proy_{cv}y=\frac{(y\cdot cv)}{||cv||^2}cv=\frac{c(y\cdot v)}{c^2||v||^2}cv=\frac{(y\cdot v)}{||v||^2}v=Proy_{v}y$

B) When you compute the product Ax, the i-th component is the matrix of the i-th column of A with x, denote this by Ai x. Then, we have that $||Ax||=\sqrt{(A_1 x)^2+\cdots (A_n x)^2}$ . Now, the colums of A are orthonormal so we have that (Ai x)^2=x_i^2. Then $||Ax||=\sqrt{(x_1)^2+\cdots (x_n)^2}=||x||$ .

C) Consider $S=\{(0,2),(2,0)\}\subseteq \mathbb{R}^2$ . This set is orthogonal because $(0,2)\cdot(2,0)=0(2)+2(0)=0$ , but S is not orthonormal because the norm of (0,2) is 2≠1.

D) Let A be an orthogonal matrix in $\mathbb{R}^n$ . Then the columns of A form an orthonormal set. We have that $A^{-1}=A^t$ . To see this, note than the component $b_{ij}$ of the product $A^t A$ is the dot product of the i-th row of $A^t$ and the jth row of $A$ . But the i-th row of $A^t$ is equal to the i-th column of $A$ . If i≠j, this product is equal to 0 (orthogonality) and if i=j this product is equal to 1 (the columns are unit vectors), then $A^t A=I$

E) Consider S={e_1,0}. S is orthogonal but is not linearly independent, because 0∈S.

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3 years ago

A broker had a taxable income of $77,050 last year. if she paid 10% of her income between $0 and $8350, 15% of her income betwee

stellarik [79]

10 percent is the same as saying 0.10 so we simply do this sum of all parts approach.
$(.10 \times8350)+(.15 \times(33950-8350)) + (.25\times(77050-33950))$

You should get an answer a bit over 15000 if you plug it into your calculator. Remember, you are taxing a certain amount of dollars at each percentage so don't get hung up on the structure of the taxes. This is why we are subtracting the smaller number from the bigger

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3 years ago

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