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3 years ago

Please help. WIll give brainliest if you explain

Mathematics

1 answer:

Eddi Din [679]3 years ago

5 0

The answer to 2 is √30/5 or 1.09545

First, you multiply the numerator and denominator by √5.
√6x√5=√30
√5x√5=5 (when a square root of an expression is multiplied by itself, the result is that expression) Therefore, the answer is √30/5 or 1.09545

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I really need help fast

xenn [34]

Answer:

Tom jogged farther.

Step-by-step explanation:

2 1/2 + 3 1/8 = 5 5/8 5 6/8 would be equalt to 5 3/4 but since it isn't 5 3/4 is farther.

Tom jogged 1/8 farther.

6 0

3 years ago

Please Explain how to do this. Will get a brainiest.

snow_tiger [21]

X= 13, The answer is 31/35

Your welcome

7 0

3 years ago

PLS HELP ME!!! which matrix represents the system of equations below {8x-9y+13z=11

Finger [1]

Answer:

The answer is below

Step-by-step explanation:

The system of equations:

8x-9y+13z=11

-8x-5y+5z=15

3x+4y-8z=-10

The equations can be represented in matrix form as:

AX = B

X = A⁻¹B

Therefore:

$\left[\begin{array}{ccc}8&-9&13\\-8&-5&5\\3&4&-8\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{c}11\\15\\-10\end{array}\right]\\\\\\\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}8&-9&13\\-8&-5&5\\3&4&-8\end{array}\right] ^{-1}\left[\begin{array}{c}11\\15\\-10\end{array}\right]\\$

$\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{ccc}\frac{1}{19} &-\frac{1}{19}&\frac{1}{19}\\-\frac{49}{380}&-\frac{103}{380}&-\frac{36}{95} \\-\frac{17}{380}&-\frac{69}{380}&-\frac{28}{95} \end{array}\right] \left[\begin{array}{c}11\\15\\-10\end{array}\right]\\\\\\\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{c}-0.74\\-1.69\\0.13\end{array}\right] \\$

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2 years ago

The table shows the steps for solving the given inequality 4-3(x-5)>6x-17

mina [271]

Step-by-step explanation:

(=) 1 ( x-5 ) > 6x-17

(=) x-5 > 6x -17

(=) -5x > -12

=> x < 12/5

7 0

2 years ago

To solve 2x + 9 = 21, what is the first step?

Oxana [17]

D.) Subtracting 9 from each side.

4 0

2 years ago