3 years ago

Three times the sum of a number and seven is greater than five times the number less thirteen

Mathematics

1 answer:

Vlad [161]3 years ago

8 0

3x(d+7) < 5d-13 (I think it is

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Answer:

yes, ±2

Step-by-step explanation:

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x^2/4 = 1

x^2 = 4

x = ±√4

x = ±2

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Step-by-step explanation:

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What is the equivalent fraction for 24/0.64?

mestny [16]

Answer:

See below

Step-by-step explanation:

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2 years ago

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Let Upper A equals left bracket Start 2 By 2 Matrix 1st Row 1st Column negative 2 2nd Column 4 2nd Row 1st Column 1 2nd Column 3

vagabundo [1.1K]

Answer:

not

Step-by-step explanation:

$\left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] *\left[\begin{array}{ccc}-2&1\\3&7\end{array}\right]=$

First is A and Second is B

Let's find A*B

$\left[\begin{array}{ccc}-2(-2)+4*3&-2*1+4*7\\1(-2)+3*3&1*1+3*7\end{array}\right] =\left[\begin{array}{ccc}16&26\\7&22\end{array}\right]$

$\left[\begin{array}{ccc}-2&1\\3&7\end{array}\right] \left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] =$

Now let's find B*A

$\left[\begin{array}{ccc}-2(-2)+1*1&-2*4+1*3\\3(-2)+7*1&3*4+7*3\end{array}\right] =\left[\begin{array}{ccc}5&-5\\1&23\end{array}\right]$

c) They are not

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3 years ago

Ax+by=cx+dy <br> Solve for X.<br> Please give step by step instructions!

leonid [27]

X= y(d-b) over a-c would be the answer

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