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2 years ago

30% of which number is 3? O A. 10 B. 9 O c. 1 O D. 0.9 O E. 0.1

Mathematics

2 answers:

natima [27]2 years ago

6 0

Answer:

The answer is B. Hope this helps!

alina1380 [7]2 years ago

4 0

Answer:

The answer is letter D

Step-by-step explanation:

3 x 0.30 = 0.9

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5/2x-7=2/4x+14 a x = -6 b x = 6 c x = 8 d x = 12

kykrilka [37]

The answer I got was x= 21/2

3 0

2 years ago

Which expressions are equivalent to 4(x+1) + 7(x+3)? Select two answers.

Natalija [7]

Answer:

9(x+3) + 2(x+3) or 10(x+2) +(x+5)

Step-by-step explanation:

First you want to distribute the equation.

4(x+1) + 7(x+3) multiplied out is

4x + 4 + 7x + 21

Now we add like terms so it comes out to

11x + 25

Two expressions that can come out to equal 11x + 25 is. 9(x+3) + 2(x+3) or 10(x+2) +(x+5)

7 0

2 years ago

Nifal earned 9$ for washing two cars .He recived $1 more for the second car.How much was he paid for washing each car?Which two

Sveta_85 [38]

Answer:

Nifal received $ 4 for washing the first car.

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

Step-by-step explanation:

The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:

$x + y = 9$

$y = x+1$

Then, by eliminating y:

$x + (x+1) = 9$

$2\cdot x + 1 = 9$

Now, let is clear $x$ :

$2\cdot x = 8$

$x = 4$

Nifal received $ 4 for washing the first car.

The earning for the second car is: ( $x = 4$ )

$y = x +1$

$y = 4 + 1$

$y = 5$

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

8 0

2 years ago

What is the tru solution to the logarithmic equation below? Log4[log4(2x)]=1

zaharov [31]

$\log_4(\log_42x)=1$

Take both sides as powers of 4:

$4^{\log_4(\log_42x)}=4^1\implies\log_42x=4$

Do it again:

$4^{\log_42x}=4^4\implies2x=(2^2)^4=2^8\implies x=2^7=128$

3 0

2 years ago

Witch operation should you do first when you simplify 85+ (25 x 5)?

olya-2409 [2.1K]

Answer:

25X5

Step-by-step explanation:

If you follow the PEMDAS rule the first thing you must do is the equation inside the parenthesis.

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

7 0

2 years ago

Read 2 more answers