3 years ago

I need help with this question, try to explain it in steps, but it's fine if it's not, ty

Mathematics

1 answer:

Harlamova29_29 [7]3 years ago

5 0

3 is the answer when u subtract 15- 13

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In the form of the matrice, how do you work out the following simultaneous equation?

lapo4ka [179]

$\left[\begin{array}{ccc}1&3&7\\1&1&1\end{array}\right]$
multiply 2nd row by -1 and add to first row
$\left[\begin{array}{ccc}0&2&6\\1&1&1\end{array}\right]$
divide the 1st row by 2
$\left[\begin{array}{ccc}0&1&3\\1&1&1\end{array}\right]$
multiply the first row by -1 and add to 2nd row
$\left[\begin{array}{ccc}0&1&3\\1&0&-2\end{array}\right]$

now we know
y+3=0
x-2=0

therefor
y=-3
x=2

4 0

3 years ago

I need help with this problem

Serggg [28]

Let the middle point be M.
MDC is a isometric triangle.
∠MDC = MCD = 25°
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3 0

3 years ago

10 times as many as blank tens is 50 tens or blank hundreds

maxonik [38]

The first one I believe is five because it says ten times as many as ___________ is fifty so you take five times ten you get fifty.

7 0

4 years ago

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The area of a square garden is 169 square feet. Find the length of one side of the garden, in feet.

nordsb [41]

If the garden is a true square, then all 4 sides are the same length.

The area of a square is equal to length^2

If we find the square root of 169, we can find the length.

√169 = 13

Each length of the square is 13 feet.

8 0

3 years ago

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DeMarcus says the number 24 / 6 belongs only to the set of rational number explain his error

prohojiy [21]

24/6 is not a proper fraction. First of all, it can be simpified: both numbers can be divided by 6:

24/6=4
6/6=1

so 24/6 is equal to 6/1, which is equat to 6!!!!

so 24/6 is actually also a natural number and an integer.

5 0

4 years ago