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3 years ago

5

Solve the equation using square roots.

="4x^{2} +9=0" alt="4x^{2} +9=0" align="absmiddle" class="latex-formula">

1 answer:

aleksklad [387]3 years ago

6 0

Isolating the variable terms and dividing by 4, we have $x^2=-\frac{9}{4}.$ Taking the square root, we have $\boxed{x=\frac{3i}{2},-\frac{3i}{2}}.$

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You and five friends have joined baseball.The team membership fee is $50 plus a $5 fee per game to pay the referee.

PtichkaEL [24]

275 beacues if u and 50 five times it would of been 250 but u an the five two the 50 and u and 55 five times and u get 275

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2 years ago

NEED ANSWER ASAP!!<br> Find x

sineoko [7]

Step-by-step explanation:

$\frac{48}{2x + 7} = \frac{40}{5x - 2} \\ 48(5x - 2) = 40(2x + 7) \\ 240x - 96 = 80x + 280 \\ 240x - 80x = 96 + 280 \\ 160x = 376 \\ \frac{160x}{160} = \frac{376}{160} \\ x = 2.35$

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3 years ago

Please help and answer

rusak2 [61]

Answer: choice C

Step-by-step explanation:

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2 years ago

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Which matrix equation represents the system of equations?<br><br> {-x+ 2y = 0 <br> y= -2

Snowcat [4.5K]

We are given a system of equations,

$\begin{cases}-x+2y=0\\y=-2\\ \end{cases}$

This will translate into a 2x2 matrix of coefficients (because 2 equations and 2 unknowns),

$\begin{bmatrix}-1&2\\0&1\\ \end{bmatrix}$

The matrix will then be applied to the vector (lower dimensions on top),

$\begin{bmatrix}x\\y\\ \end{bmatrix}$

And the result vector will be whats on the other side of equals sign,

$\begin{bmatrix}0\\-2\\ \end{bmatrix}$

So to put everything together,

$\begin{bmatrix}-1&2\\0&1\\ \end{bmatrix}\begin{bmatrix}x\\y\\ \end{bmatrix}=\begin{bmatrix}0\\-2\\ \end{bmatrix}$

Hope this helps :)

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2 years ago

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Andru [333]

Answer:

10.56

Step-by-step explanation:

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2 years ago

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