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3 years ago

NEED HELP ASAP WILL MARK BRAINLET FOR GOOD AND CORRECT ANSWER!!!!

Mathematics

1 answer:

hjlf3 years ago

3 0

Hey! The surface area is 294. Have a great day. :-)

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Solve and graph. c – 10 + 3c -2<br> B. C 3<br> D. C < -2

Radda [10]

I think that since their is no = sign you can’t have just one nimber because you can’t fully simplify... I got 4c-12

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3 years ago

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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

3 years ago

Simplify [2 × (10 5)] - 5 Question 4 options: 25 20 12.5 120

frez [133]

what is the symbol between 10 and 5

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3 years ago

To figure out how many vacation days she had left to use, Rosanne looked over her old calendars to figure out how many days of v

Feliz [49]

Answer:

people already answered it

Step-by-step explanation:

6 0

3 years ago

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Is it true that the order when dividing 3 real numbers does not affect the answer

Jobisdone [24]

No, it is not true

Lets do an example:

4 divided by 2 divided by 1 equals 2, while 2 divided by 1 divided by 4 equals 0.5

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3 years ago