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3 years ago

PLEASE HELP! I ONLY HAVE 10 MINUTES LEFT!

Mathematics

1 answer:

Simora [160]3 years ago

8 0

Answer:

Multiplacation

Step-by-step explanation:

It is the multiplacation roperty pbecauseyou are multipyling 10 times x and 3.

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Using Cramer's rule to solve linear systems.

Rzqust [24]

Answer: Last Option

$x=2,\ y=-5$

Step-by-step explanation:

Cramer's rule says that given a system of equations of two variables x and y then:

$x =\frac{Det(A_X)}{Det(A)}$

$y =\frac{Det(A_Y)}{Det(A)}$

For this problem we know that:

$Det(A) = |A|=\left|\begin{array}{ccc}4&-6\\8&-2\\\end{array}\right|$

Solving we have:

$|A|= 4*(-2) -(-6)*8\\\\|A|=40$

$Det(A_X) = |A_X|=\left|\begin{array}{ccc}38&-6\\26&-2\\\end{array}\right|$

Solving we have:

$|A_X|=38*(-2) - (-6)*26\\\\|A_X|=80$

$Det(A_Y) = |A_Y|=\left|\begin{array}{ccc}4&38\\8&26\\\end{array}\right|$

Solving we have:

$|A_Y|=4*(26) - (38)*8\\\\|A_Y|=-200$

Finally

$x =\frac{|A_X|}{|A|} = \frac{80}{40}\\\\x=2$

$y =\frac{|A_Y|}{|A|} = \frac{-200}{40}\\\\y=-5$

4 0

2 years ago

2(h - 8) - h = h - 16

tresset_1 [31]

$2(h-8)-h=h-16$

$2h-16-h=h-16$

$h=h$

h has infinitely many solutions.

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2 years ago

What is the answer for m+12=10

9966 [12]

Answer:

m = -2

Step-by-step explanation:

Since 10 is smaller than 12, we have to subtract to get a negative number.

10 - 12 = -2

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2 years ago

Figure on the right shows line A is parallel to line B and line C intersects lines A and B to form 8 angles Wich two angles are

Fed [463]

Answer:

B. 

Step-by-step explanation:

We answer that before thank you

3 0

2 years ago

I need help!? Someone help me

hammer [34]

Answer 3 his car is slowing down

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3 years ago

Read 2 more answers