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1 year ago

Rewrite 7^5/7 with a single positive exponent

Mathematics

1 answer:

vaieri [72.5K]1 year ago

8 0

Answer:

7^4

Step-by-step explanation:

to divide exponents we just subtract what the exponent is so we can write it like this

7^5/7^1= 7^5-1=7^4

Hopes this helps please mark brainliest

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Please help: linear algebra problem. (Linear combinations)

DochEvi [55]

Answer:

$\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right] \left[\begin{array}{ccc}c\\d\end{array}\right] =\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

This tells us that:

$A=\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right]$

$b=\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

Step-by-step explanation:

So we are saying we have scalars, c and d, such that:

$c\left[\begin{array}{ccc}5\\5\\ 3\end{array}\right]+d\left[\begin{array}{ccc}7\\-8\\-9\end{array}\right]=\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$ .

So we want to find a way to express this as:

Ax=b where x is the scalar vector, $\left[\begin{array}{ccc}c\\d\end{array}\right]$ .

So we can write this as:

$\left[\begin{array}{ccc}5&7\\5&-8\\3&-9\end{array}\right] \left[\begin{array}{ccc}c\\d\end{array}\right] =\left[\begin{array}{ccc}-16\\3\\-15\end{array}\right]$

3 0

3 years ago

You spin the spinner once.

Ymorist [56]

Answer:

0.625

Step-by-step explanation:

5 out of 8 of the sections in the circle are yellow. This means that there is a 5/8 chance of the spinner landing in a yellow section.

5/8 written as a decimal is 0.625

The answer is 0.625

6 0

3 years ago

Jakob is working on his math homework. He decides that the sum of two rational numbers is

xeze [42]

Answer:

yes because rational numbers are rational. they stay the same

Step-by-step explanation:

7 0

3 years ago

Matt has 20 marbles in a bag. 15 are red, 2 are blue, and 3 are green. what is the probability that Matt will pick a blue marble

marta [7]

Answer=10%

15+2+3=20
2 of which are blue.
Put it over 100, 20x5=100 so 2x5=10

4 0

4 years ago

Read 2 more answers

Find the value of c and AB if B is between A and C,AB=2r,AC=-5and BC=7

elena-14-01-66 [18.8K]

AB=2r

BC=7

AC=AB+BC

-5=2r+7

-12=2r

-6=r

AB=-12

6 0

4 years ago