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3 years ago

Why is this scientific notation: 12,050,000 = 1.25×107 wrong

Mathematics

1 answer:

Solnce55 [7]3 years ago

7 0

Answer:

1.234 × 101

Step-by-step explanation:

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The sum of four times a number and five times another number is -28. The sum of nine times the first number and two times the se

Rina8888 [55]

Answer:

Step-by-step explanation:

$x,\ y-the\ numbers\\\\\text{The sum of four times a number and five times another number is -28:}\\\\4x+5y=-28\\\\\text{The sum of nine times the first number and two times the second number is 11:}\\\\9x+2y=11\\\\\text{We have the system of equations:}\\\\\left\{\begin{array}{ccc}4x+5y=-28&\text{multiply both sides by2}\\9x+2y=11&\text{multiply both sides by (-5)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}8x+10y=-56\\-45x-10y=-55\end{array}\right}\qquad\text{add both sides of the equation}$

$.\qquad-37x=-111\qquad\text{divide both sides by (-37)}\\.\qquad\qquad\boxed{x=3}\\\\\text{Put the value of x to the first equation:}\\\\4(3)+5y=-28\\12+5y=-28\qquad\text{subtrac 12 from both sides}\\5y=-40\qquad\text{divide both sides by 5}\\\boxed{y=-8}$

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2 years ago

What is the area of this figure?<br><br> Enter your answer in the box

vovangra [49]

The answer is 35cm for the area

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2 years ago

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What is the GRM for a residential duplex with a selling price of $234,000 if the monthly rent for each unit is $925? A. l.054 B.

stiks02 [169]

Answer:

126.5

Step-by-step explanation:

Given :The monthly rent for each unit is $925

To Find : What is the GRM for a residential duplex with a selling price of $234,000 if the monthly rent for each unit is $925?

Solution:

Annual Gross Rents = $925

Property Value = $234,000

For answer to be 126.5 , $925 must be semiannual rent

So, annual rent = 925*2

Formula : Property Value = Annual Gross Rents X Gross Rent Multiplier (GRM)

Substitute the values :

$234000=925 \times \text{Gross Rent Multiplier}$

$\frac{234000}{925 \times 2}= \text{Gross Rent Multiplier}$

$126.5 = \text{Gross Rent Multiplier}$

Hence The GRM for a residential duplex with a selling price of $234,000 if the monthly rent for each unit is $925 is 126.5

So, Option D is true .

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3 years ago

Find the coordinates of the midpoint of AB given A (2,3) and B (4, -2)

marshall27 [118]

Answer:

(3, 1/2)

Step-by-step explanation:

The x-coordinate of the midpoint of AB is the arithmetic mean of 2 and 4, which comes out to 3. The y-coordinate of the midpoint of AB is the arithmetic mean of 3 and -2, which comes out to 1/2.

Thus the midpoint of AB is (3, 1/2).

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3 years ago

Which set of ratios could be used to determine if one triangle is a dilation of the other?

Elena L [17]

The first answer is the correct one.

It is the only one that keeps all the ratios from the first triangle on the top and the 2nd triangle on the bottom. the other three answers keep swapping top and bottom positions.

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3 years ago

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