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7nadin3 [17]
3 years ago
11

Solve for x if 25'+ 3(5') = 4​

Mathematics
2 answers:
Masteriza [31]3 years ago
6 0

Answer:

0

Step-by-step explanation:

Explanation:

masha68 [24]3 years ago
5 0

Answer:

x=0

Step-by-step explanation:

Let 5x = y.

(52)x+3(5x)−4=0

y2+3y−4=0

y2−y+4y−4=0

y(y−1)+4(y−1)=0

(y+4)(y−1)=0

y=−4;y=1

y = -4 is not possible.

y = 1 ⟹ x = 0.

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Lubov Fominskaja [6]
So... hmmm if you check the first picture below, for 2)

we could use the proportions of those small, medium and large similar triangles  like  \bf \cfrac{small}{large}\qquad \cfrac{x}{12}=\cfrac{6}{x}\impliedby \textit{solve for "x"}
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\cfrac{small}{large}\qquad \cfrac{z}{18}=\cfrac{6}{z}\impliedby \textit{solve for "z"}
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\cfrac{large}{medium}\qquad \cfrac{y}{12}=\cfrac{18}{y}\impliedby \textit{solve for "y"}

now.. for 3) will be the second picture below


\bf \cfrac{large}{medium}\qquad \cfrac{x+10}{2\sqrt{30}}=\cfrac{2\sqrt{30}}{10}\impliedby \textit{solve for "x"}
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\textit{now, because you already know what "x" is, we can use it below}
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8 0
3 years ago
Factorise 12x - 30<br> help me please
Sonbull [250]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If Bill wants to find the average of his family's heights. If his brother is 60 inches tall, his
Romashka [77]

Answer: 56 inches

Step-by-step explanation:

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4 0
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katen-ka-za [31]

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