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drek231 [11]
3 years ago
5

7 divided by 9=28 divided by y

Mathematics
2 answers:
vekshin13 years ago
7 0

Answer:

7/9=28 = No

Step-by-step explanation:

Compare: 7

9

vs 28 = 7

9

vs 28

1

= 7

9

vs 28 · 9

1 · 9

= 7

9

vs 252

9

= 7 vs 252 = No

The calculator performs basic and advanced operations with fractions, expressions with fractions combined with integers, decimals, and mixed numbers. It also shows detailed step-by-step information about the fraction calculation procedure. Solve problems with two, three, or more fractions and numbers in one expression.

Rules for expressions with fractions:

Fractions - use the slash “/” between the numerator and denominator, i.e., for five-hundredths, enter 5/100. If you are using mixed numbers, be sure to leave a single space between the whole and fraction part.

The slash separates the numerator (number above a fraction line) and denominator (number below).

Mixed numerals (mixed fractions or mixed numbers) write as non-zero integer separated by one space and fraction i.e., 1 2/3 (having the same sign). An example of a negative mixed fraction: -5 1/2.

Because slash is both signs for fraction line and division, we recommended use colon (:) as the operator of division fractions i.e., 1/2 : 3.

Decimals (decimal numbers) enter with a decimal point . and they are automatically converted to fractions - i.e. 1.45.

The colon : and slash / is the symbol of division. Can be used to divide mixed numbers 1 2/3 : 4 3/8 or can be used for write complex fractions i.e. 1/2 : 1/3.

An asterisk * or × is the symbol for multiplication.

Plus + is addition, minus sign - is subtraction and ()[] is mathematical parentheses.

The exponentiation/power symbol is ^ - for example: (7/8-4/5)^2 = (7/8-4/5)2

photoshop1234 [79]3 years ago
3 0

Answer:

7/9=28/y

We move all terms to the left:

7/9-(28/y)=0

Domain of the equation: y)!=0

y!=0/1

y!=0

y∈R

We add all the numbers together, and all the variables

-(+28/y)+7/9=0

We get rid of parentheses

-28/y+7/9=0

We calculate fractions

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Talisa plans a 30-foot deep pond. While digging, she hits rock 25 feet down. How can Talisa modify
Natali [406]

9514 1404 393

Answer:

  multiply the radius by √1.2 ≈ 1.0954

Step-by-step explanation:

Let the original depth and radius be represented by 30 and r. Let the modified depth and radius be represented by 25 and r'. Assuming the pond is uniform depth, the formula for the volume of a cylinder applies. The volume of a cylinder is given by ...

  V = πr²h

In this application, we want the original and modified volumes to be the same.

  πr²(30) = π(r')²(25)

  (r')² = r²(30/25) = r²(6/5)

  r' = r√(6/5)

The radius can be multiplied by √1.2 to maintain the original volume of the pond.

6 0
3 years ago
Two stores sell a certain product. Store A has 45% of the sales, 3% of which are of defective items, and store B has 55% of the
Mumz [18]

Answer:

Probability = 0.0355

Step-by-step explanation:

Given

Stot A:

Sales = 45\%

Defective = 3%

Store B

Sales = 55\%

Defective = 4%

Required

Determine the probability a product received is defective.

First, we calculate the probability that the defective product is from store A

Probability = P(Sales) * P(Defective)

P_A = 45\% * 3\%

Convert to decimals

P_A= 0.45 * 0.03

P_A= 0.0135  

Next, we calculate the probability that the defective product is from store B

P_B= 55\% * 4\%

P_B= 0.55 * 0.04

P_B= 0.022

The product may come from either stores.

So, the probability of having a defective product is:

Probability = P_A + P_B

Probability = 0.0135 + 0.022

Probability = 0.0355

4 0
3 years ago
A temperature recorded in Antarctica was -121Fahrenheit. The temperature recorded in the Sahara desert was 132 fahrenheit. How m
rodikova [14]

Answer: 253°F

Step-by-step explanation:

Given the following :

Temperature in Antarctica = - 121 Fahrenheit

Temperature in Sahara desert = 132 Fahrenheit

Number of degrees in which Sahara desert is warmer than Antarctica :

(temperature in Sahara desert - temperature in Antarctica)

= ( 132°F - (-121°F))

= (132°F + 121°F)

= 253°F

Sahara Desert is 253°F warmer

5 0
4 years ago
(12.9−3.1)×6.2−2+<img src="https://tex.z-dn.net/?f=4%5E%7B3%7D" id="TexFormula1" title="4^{3}" alt="4^{3}" align="absmiddle" cla
alexandr1967 [171]
The answer is -67.24
6 0
3 years ago
&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;
Studentka2010 [4]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
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