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3 years ago

PLZ HELP GIVING CORRECT ANSWER THE BRAINLIEST!!

Mathematics

1 answer:

beks73 [17]3 years ago

3 0

Answer:

About 20.8

Step-by-step explanation:

form a triangle using each line

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The answer is C. m
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Someone please help me

aliina [53]

Answer:

8. Louis

9. Rose; Raymond

Step-by-step explanation:

8. An exponent represents the number of times the base appears as a factor in the product.

We use a coefficient to signify repeated addition: 3x means x+x+x.

We use an exponent to signify repeated multiplication. x³ means x·x·x.

So, the expression ...

$4^2\cdot 4^5\text{ means }(4\cdot4)\cdot(4\cdot4\cdot4\cdot4\cdot4)$

You can see that the factor 4 appears 7 times in the product, so would be represented in exponential form as ...

$4^2\cdot4^5=\boxed{4^7}$

Louis has correctly observed this fact. In general, we see that multiplying powers of the same base causes those powers to be added.

Part A. Rose is correct for the same reason as in problem 8.

5^5 · 5^2 = 5^(5+2) = 5^7

Part B. Raymond is correct. We know that division cancels similar terms from the numerator, so ...

$\dfrac{7^9}{7^5}=\dfrac{7\cdot7\cdot7\cdot7\cdot7\cdot7\cdot7\cdot7\cdot7}{7\cdot7\cdot7\cdot7\cdot7}=7\cdot7\cdot7\cdot7=7^{9-5}=7^4$

The rules of exponents we're using here are ...

(a^b)(a^c) = a^(b+c)

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3 years ago

Find u and v only please:

tekilochka [14]

Every two triangles are similar. Therefore the sides of triangles are in proportion.

We have the equations:

$\dfrac{3}{5}=\dfrac{3+x}{20}$ cross multiply

$5(3+x)=(3)(20)$ divide both sides by 5

$3+x=(3)(4)$

$3+x=12$ subtract 3 from both sides

$\boxed{x=9}$

--------------------------------------

$\dfrac{3}{4}=\dfrac{9}{y}$ cross multiply

$3y=(4)(9)$

$3y=36$ divide both sides by 3

$\boxed{y=12}$

------------------------------------------

$\dfrac{3}{5}=\dfrac{3+9+u}{60}$

$\dfrac{3}{5}=\dfrac{12+u}{60}$ cross multiply

$5(12+u)=(3)(60)$ divide both sides by 5

$12+u=(3)(12)$

$12+u=36$ subtract 12 from both sides

$\boxed{u=24}$

----------------------------------------------

$\dfrac{3}{4}=\dfrac{24}{v}$ cross multiply

$3v=(4)(24)$

$3v=96$ divide both sides by 3

$\boxed{v=32}$

3 0

3 years ago

If a rectangle has a base of 6' and a height of 4' its area would be what?

zavuch27 [327]

24 sq.ft. Is the answer if not then I’m sorry

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2 years ago