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3 years ago

Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.

Mathematics

1 answer:

krok68 [10]3 years ago

8 0

Answer:

(x, y, z) =(1, -1,2)

Step-by-step explanation:

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If Y is directly proportional to X² and y=21 when x=2, find the value of y when X=4.

frozen [14]

The value of y will probably be 4.

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3 years ago

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The sum of two numbers is 25. One number is twice the second number plus seven. What are the two numbers ?

Hoochie [10]

Answer:

the two numbers are 19 and 6

Step-by-step explanation:

so we know that there are two numbers that added together give us 25

x+x=25

one of the numbers is twice the amount of the second plus 7

(2x+7)+x=25

simplify 2x+7+x

3x+7=25

subtract 7 from both sides

3x=18

divide 3 by both sides

x=6

and there is your answer.

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3 years ago

Help me asap …………..p

borishaifa [10]

Answer:

1.) Tan C = $\frac{12}{5}$

2.) Sin Z = $\frac{24}{26}$ or $\frac{12}{13}$ if reduced

3.) Cos A = $\frac{15}{17}$

4.) Cos A = $\frac{12}{37}$

Step-by-step explanation:

Let's keep in mind that;

Sin = $\frac{opposite}{hypotenuse}$

Cos = $\frac{adjacent}{hypotenuse}$

Tan = $\frac{opposite}{adjacent}$

Hope this helps!

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2 years ago

Find the y-intercept of the line 18x–y=5.

DaniilM [7]

$\text{Write in y=mx+c form, where m is the slope and c is the y-intercept}\\\\~~~~18x-y = 5\\\\\implies y = 18x -5\\\\\text{y-intercept}~ = -5$

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2 years ago

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Help math fractions <br> 3 2/3 - 1 11/12=

Allisa [31]

Answer:

i wrote this as a decimal so um i hope this at least helps :). 1.75

Step-by-step explanation:

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4 years ago

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