Find the height of the tree

Mathematics

1 answer:

Kipish [7]3 years ago

6 0

Answer:

im guessing 15

Step-by-step explanation:

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Simplify 8(x-3)-4(2x-7)

Paraphin [41]

Answer:

Your solution is 4.

Step-by-step explanation:

4 0

3 years ago

A long distance runner can run 2 miles every 17 minutes. At this rate how ling would it take the runner to run 16 miles.

VLD [36.1K]

Answer:

136 minutes

Step-by-step explanation:

Given :

2 miles ----> takes 17 min

1 mile -----> takes 17/2 min

hence the unit rate is (17/2) min per mile

Thus, 16 miles will take

= (17/2) miles per min x 16 miles

= (17/2) x 16

= 136 minutes

6 0

4 years ago

Read 2 more answers

Kenji simplifies 3^5 x 4^ 5and gets the result 12^10, but Darlene is not sure. Is Kenji correct? Justify your answer.

V125BC [204]

That's a question about exponentiation.

Answer:

Kenji is wrong because he does not aply the porperty correctly.

Step-by-step explanation:

A exponetiation has this form:

$\boxed{a^b}$

<em>a </em>is the base

<em>b</em> is the power or exponent

To understand that situation it's important to know a property about exponentiation. When we have a multiplication with the same exponent and diferent bases, the result is the multiplication of the bases with the same exponent. Let's see this above, in mathematical language:

$\boxed{a^b \cdot c^b = (a\cdot c) ^b}$

Examples:

$2^3 \cdot 8^3 = (2 \cdot 8) ^3 = 16^3$

$10^9 \cdot 23^9 = (10 \cdot 23) ^9 = 230^9$

Now, we can say why Kenji is wrong. It's easy simplify $3^5 \cdot 4^5$ ! We know that the result is $(3 \cdot 4) ^5 = 12^5$ , but Kenji multiplied the bases and added the exponents, that's why he is wrong.