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2 years ago

Someone pls help me with this, i would appreciate it. last math question i need help with

Mathematics

1 answer:

professor190 [17]2 years ago

4 0

2/5

0.4/1*10/10=4/10
4/10%2/2=2/5

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A sofa regularly sells for $510. The sale price is $469.20. Find the percent decrease of the sale price from regular price.

Westkost [7]

Answer:

8% decrease

Step-by-step explanation:

First work out the difference decrease between the two numbers you are comparing. Then decrease the original number by the new number.Then divide the original number by the decrease and multiply the answer by 100.Next you divide the original number by the new number and multiply by 100. Finally you will get your answer.

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3 years ago

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3 years ago

Find the area of the figure below. round your answer to the nearest tenth

lara [203]

Step-by-step explanation:

Area 1 = the rectangle

8×3=24cm²

Area 2= semi circle

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3 years ago

(-3)3 (26)

Lemur [1.5K]

Question:

Geoffrey is evaluating the expression (-3)^3(2^6)/(-3)^5(2^2) as shown below.

(-3)^3(2^6)/(-3)^5(2^2) = (2)^a/(-3)^b = c/d

What are the values of a, b, c, and d?

Answer:

The values are a = 4, b = 2, c = 16, d = 9

Solution:

Given that,

Geoffrey is evaluating the expression

$\frac{(-3)^3 \times 2^6}{(-3)^5 \times 2^2}$

He is evaluating as shown below:

$\frac{(-3)^3 \times 2^6}{(-3)^5 \times 2^2} = \frac{2^a}{-3^b} = \frac{c}{d}$

From given,

$\frac{(-3)^3 \times 2^6}{(-3)^5 \times 2^2}$

Use the law of exponent

$\frac{a^m}{a^n} = a^{m - n}$

Therefore,

$\frac{(-3)^3 \times 2^6}{(-3)^5 \times 2^2} = \frac{2^{6-2}}{(-3)^{5-3}}\\\\Simplify\\\\\frac{(-3)^3 \times 2^6}{(-3)^5 \times 2^2} = \frac{2^4}{-3^2}$

Thus,

a = 4

b = 2

Simplify further

$\frac{(-3)^3 \times 2^6}{(-3)^5 \times 2^2} = \frac{2^4}{-3^2} = \frac{16}{9}$

Thus,

c = 16

d = 9

Thus values are a = 4, b = 2, c = 16, d = 9

8 0

4 years ago

Please find x and y helpppp

dedylja [7]

Answer:

x=60°[by alternate interior angle]

x+y=180°[by co interior angle]

60°+y=180°

y=180°- 60°

y= 120°

7 0

3 years ago