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3 years ago

Three times Jamie's age plus 3 is Maria's age. Maria is 48. What is Jamie's age?

Mathematics

2 answers:

olchik [2.2K]3 years ago

6 0

Answer: 15 because 15 times 3 is 45 and then add 3 and its 48

wolverine [178]3 years ago

4 0

Answer:54

Step-by-step explanation:

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For what value of x is the rational expression below equal to zero?

krek1111 [17]

Answer:

Step-by-step explanation:

It's easy because 4-4=0 and anything divided by zero is zero.

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3 years ago

two factors that make. product are called a pair. describe how using pairs helped you solve the problem

BARSIC [14]

When 2 digits are next to each other, the place value relationships of both numbers are 10 times greater. ... Two factors that make. product are called a pair. describe how using pairs helped you solve the problem · Answer.

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3 years ago

The equation Y equals 4/10 X describes the number of kilometers y that a van travels in x minutes. What is the constant speed of

Mekhanik [1.2K]

Answer:

$\frac{4}{10}=0.4$ kilometers per hour.

Step-by-step explanation:

We have been given an $y=\frac{4}{10}x$ , which describes the number of kilometers y that a van travels in x minutes. We are asked to to find the constant speed of the van in terms of hours.

We can see that van travel $\frac{4}{10}x$ kilometers in x hours. To find the constant speed of van, we will substitute $x=1$ in our given equation as:

$y=\frac{4}{10}(1)$

$y=\frac{4}{10}$

Since van travels $\frac{4}{10}$ kilometers in one hour, therefore, constant speed of van is $\frac{4}{10}$ kilometer per hour or $0.4$ kilometers per hour.

3 0

3 years ago

Can someone please explain to me how 13.5% is the answer???

k0ka [10]

13.5 is 0.135 bcause when you look up the answer that how i got 0.135

4 0

3 years ago

The notation Ak meas the matrix A Multiplied with itself k times (a) For the 2×2 identity matrix I, show that I2 =I (b)For the n

djverab [1.8K]

Answer:

Entries of I^k are are also identity elements.

Step-by-step explanation:

a) For the 2×2 identity matrix I, show that I² =I

$I^{2}=\left[\begin{array}{cc}1&0\\0&1\end{array}\right] \times \left[\begin{array}{cc}1&0\\0&1\end{array}\right] \\\\=\left[\begin{array}{cc}1\times 1+0\times 0&1\times 0+0\times 1\\0\times 1+1\times 0&0\times 0+1\times1\end{array}\right] \\\\=\left[\begin{array}{cc}1&0\\0&1\end{array}\right]$

Hence proved I² =I

b) For the n×n identity matrix I, show that I² =I

n×n identity matrix is as shown in figure

Elements of identity matrix are

$\delta I_{ij}=1\quad if\quad i=j\\\delta I_{ij}=0\quad if\quad i\ne j\\$

As square of 1 is equal to 1 so for n×n identity matrix I, I² =I

As mentioned above

$\delta I_{ij}=1\quad if\quad i=j\\\delta I_{ij}=0\quad if\quad i\ne j\\$

Any power of 1 is equal to 1 so kth power of 1 is also 1. According to this Ik=I

6 0

3 years ago