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3 years ago

Help pls I’ll give extra points

Mathematics

1 answer:

pychu [463]3 years ago

3 0

Answer:

Its A!

Step-by-step explanation:

I learned this by magnetic force and science.

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X2 + 3x - 108 = 0<br> What is the answer?

worty [1.4K]

Answer:

The answer is x=9 and/or x = -12

Step-by-step explanation:

This is a quadratic formula meaning that you must take the a value (1) b value (3) and the c value (108) and plug it into the quadratic formula.

$\frac{-3±\sqrt{9+4*1*-108} }{2}$

which simplifies to -3 add or subtract the sqrt of 441 divided by two.

5 0

4 years ago

Please help!! giving points and available!!:)

Makovka662 [10]

Answer:

19.9 cm

Step-by-step explanation:

os that a 3.4 in the very left? if so...this should be it.

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3 years ago

Read 2 more answers

Tại 1 khu dân cư. Tỉ lệ gia đình sở hữu nhà là 70%, sở hữu xe là 45%, cả nhà và xe là 30%. Tính xác suất chọn một gia đình được

boyakko [2]

Answer:

english please

Step-by-step explanation:

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3 years ago

This is a variation acitivity:

sergey [27]

$\bf \qquad \qquad \textit{direct proportional joint variation} \\\\ \textit{\underline{y} varies jointly with \underline{x} and \underline{z}}\qquad \qquad y=kxz\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}$

$\bf \stackrel{\textit{\underline{I} varies jointly with \underline{P} and \underline{t}}}{I=kPt} \\\\\\ \textit{we also know that } \begin{cases} P=2000\\ t=4\\ I=320 \end{cases}\implies 320=k(2000)(4)\implies \cfrac{320}{(2000)(4)} \\\\\\ 0.04=k\qquad therefore\qquad \boxed{I=0.04Pt} \\\\\\ \textit{if P=5000 and t=7, what is \underline{I}?}\qquad I=0.04(5000)(7)\implies I=1400$

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3 years ago

Find the value of X (multiple choice)

sdas [7]

Answer:

Step-by-step explanation:

trust meee

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3 years ago