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3 years ago

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A tree casts a shadow 8ft long. A 6-ft man casts a shadow 4 ft long. The triangle formed by the tree and its shadow is similar t

o the triangle formed by the man and his shadow.How tall is the tree?

1 answer:

Gennadij [26K]3 years ago

6 0

Im not sure but it could be 192

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Find the value of x and z

Kay [80]

Answer:

3

Step-by-step explanation:

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3 years ago

What equation results from completing the squre and then factoring x^2+10=15

nlexa [21]

For this case we must complete squares:

$x ^ 2 + 10x = 15$

We add the square of half the coefficient of the term "x",

$(\frac {b} {2a}) ^ 2$ on both sides of the equation:

$x^2+10x+(\frac {10} {2 (1)}) ^ 2 = 25 + 15\\x ^ 2 + 10x + 5 ^ 2 = 25 + 15$

According to the perfect square trinomial we have:

$(a + b) ^ 2 = a ^2 + 2ab + b ^ 2$

Rewriting the expression we have:

$a = x\\b = 5\\(x + 5) ^ 2 = 25 + 15\\(x + 5) ^ 2 = 40$

ANswer:

$(x + 5) ^ 2 = 40$

6 0

3 years ago

Emma buys and sells truck parts she bought two tires for $35 eachand later sold them for $65 each she bought three rims for $75

alexdok [17]

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Step-by-step explanation:

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3 years ago

What is the value of y in the equation 5x + 2y = 20, when x = 0.3?

Dimas [21]

Y=9.25 (short answer but hope this helped u)

5 0

3 years ago

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Can someone help! I know the answer I just need step by step!

baherus [9]

Answer:

$4 \sqrt{2}$

Step-by-step explanation:

Rewrite 32 as the product of 16 and 2:

$\implies \sqrt{32}=\sqrt{16 \cdot 2$

Apply exponent rule $\sqrt{a \cdot b}=\sqrt{a}\sqrt{b}$

$\implies \sqrt{16 \cdot 2}=\sqrt{16}\sqrt{2}$

Rewrite 16 as 4²:

$\implies \sqrt{16}\sqrt{2}=\sqrt{4^2}\sqrt{2}$

Apply exponent rule $\sqrt{a^2}=a$

$\implies \sqrt{4^2}\sqrt{2}=4 \sqrt{2}$

6 0

2 years ago

Read 2 more answers