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bogdanovich [222]
3 years ago
10

Which matrix represents the system of equations shown below? 3x -7y=21

Mathematics
1 answer:
Serjik [45]3 years ago
8 0

\left\{\begin{array}{ccc}3x-7y=21\\4x+5y=11\end{array}\right \\\\.\ \ x\qquad y\ \ const.\\\left[\begin{array}{ccc}3&-7\\4&5\end{array}\right|\left\begin{array}{ccc}21\\11\end{array}\right]

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2/5 of the children in a club are girls,if there are 24 boys,how many children are there altogether?how many more boys than girl
Masja [62]
2/5 are girls, therefore 3/5 are boys

3/5 = 24
1/5 = 24 ÷ 3 = 8
2/5 = 8 x 2 = 16

Altogether = 16 + 24 = 40 

24  - 1 6 = 8

There are 40 children altogether
There are 8 more boys than girls.


5 0
3 years ago
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Marcus boxers dog 3/5 of a mile every day how far does Marcus walk his dog 6 days
lina2011 [118]
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3 years ago
The functions and g are defined as follows.
elena-s [515]

Answer:

- 27 and 7

Step-by-step explanation:

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6 0
3 years ago
Is the relation a function? Why or why not?<br><br> {(–3, –2), (–1, 0), (1, 0), (5, –2)}
tankabanditka [31]

Answer:

yes, the given relation is a function.

Step-by-step explanation:

The given relation is

{(–3, –2), (–1, 0), (1, 0), (5, –2)}

A relation is called function if each element of the domain is paired with exactly one element of the range.

It means for each value of x there exist a unique value of y.

In the given relation for each value of x there exist a unique value of y.

Therefore the required solution is yes and this relation is a function.

5 0
3 years ago
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rosijanka [135]
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Converting to rectangular form:  x = 22 cos 39 deg and y = 22 sin 39 deg
3 0
3 years ago
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