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vichka [17]
3 years ago
15

Pls help, quickly!!!!

Mathematics
1 answer:
Lostsunrise [7]3 years ago
5 0

Answer:

D. 0.665

Step-by-step explanation:

To find the standard form of something in scientific notation, we multiply both numbers. Since 10^-1 is our number with a base of 10, and it has a exponent of -1, we move the decimal place of the other number one to the left. So our answer is D, 0.665.

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6(2y - 1) - 2(2y) = 6
Hatshy [7]

Answer:

3/2

Step-by-step explanation:

replace dis in y to check your answer

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Solve 5x-3/2 + x+7/3=15
inessss [21]
The answer is x = 85/36.
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3 years ago
A local concert promoter purchases 2 3/4 pages of ads. When one of the concerts is cancelled, the promoter cancels 1 5/8 pages o
Lynna [10]

Answer:

1\frac{1}{8} pages

Step-by-step explanation:

Since the concert promoter started with 2 \frac{3}{4} pages of ads but had to cancel 1 \frac{5}{8}, subtracting the cancelled amount from the original amount will give the amount of advertising space the promoter is now actually using:

 2 \frac{3}{4}  = 2 \frac{6}{8}

- <u>1 \frac{5}{8}</u>      - <u>1 \frac{5}{8}</u>

     1\frac{1}{8} pages

In order to subtract fractions, you need to have like denominators, so you need to convert \frac{3}{4} into an equivalent fraction with a denominator of '8'.  Since 4 x 2 = 8, then you also need to multiply the numerator by the same factor: 3 x 2 = 6.

5 0
3 years ago
A piggy bank is full of dimes and quarters. The total
Talja [164]

She has  27 quarters and 73 dimes.

Write a system of equations.

Let x be the number of quarters, and y be the number of dimes.

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Solve by substitution:y=100−x

∴0.25x + 0.10(100 - x) = 14.05

0.25x+10−0.10x=14.05

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Solve for y now:

y+27=100

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A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions. The meanings of the word equation and its cognates in various languages can vary slightly. For instance, in French, an equation is defined as having one or more variables, whereas, in English, an equation is any well-formed formula that consists of two expressions linked by the equals sign.

Finding the values of the variables that cause the equality to hold true is the first step in solving an equation with variables. The unknown variables are also known as the variables for which the equation must be solved, and the unknown variable values that fulfill the equality are known as the equation's solutions. Equations come in two varieties: identities and conditional equations.

To learn more about account form the given link:

brainly.com/question/10413253

#SPJ9

3 0
1 year ago
1. 400 +4<br> 2. 320+ 4<br> 3. 360 +9<br> 4. 5,0005<br> 5. 3,000 +5
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Answer:

1. 400 ÷ 4 = 100

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5. 3000 ÷ 5 = 600

6 0
3 years ago
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