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3 years ago

Value of 50 ÷ (4 + 6) • 4 ??

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

4 0

Answer:

Step-by-step explanation:

PEMDAS

Parentheses: (4+6)= 10

Division: 50/10=5

Multiplication: 5*4=20

9966 [12]3 years ago

3 0

50 divided by (10) x 4 = 20

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Pls give answer with formulas and steps 4/9 ÷ -5/7

katrin [286]

9514 1404 393

Answer:

-28/45

Step-by-step explanation:

Step 1, the sign

When the fractions have an odd number of minus signs (1, not 0 or 2), the result will be negative. This knowledge lets you ignore the sign while you do the rest of the arithmetic. The appropriate sign is applied to the final numbers.

Step 2, the formula

The ratio (a/b)÷(c/d) is (ad)/(bc). There are several ways you can get there:

⇒ "invert and multiply" or "swap dot"

$\dfrac{a}{b}\div\dfrac{c}{d}=\dfrac{a}{b}\,\cdot\,\dfrac{d}{c}=\dfrac{ad}{bc} \quad\text{division is multiplication by the reciprocal}$

⇒ "numerators of a common denominator"

$\dfrac{\left(\dfrac{a}{b}\right)}{\left(\dfrac{c}{d}\right)}=\dfrac{\left(\dfrac{ad}{bd}\right)}{\left(\dfrac{bc}{bd}\right)}=\dfrac{ad}{bc}$

⇒ "swapped denominators of a common numerator"

$\dfrac{\left(\dfrac{a}{b}\right)}{\left(\dfrac{c}{d}\right)}=\dfrac{\left(\dfrac{ac}{bc}\right)}{\left(\dfrac{ac}{ad}\right)}=\dfrac{ad}{bc}$

The use of common numerators or common denominators is most often seen when the numerator or denominator of one fraction is a multiple of that in the other fraction. Example: (2/3)÷(1/6) = (4/6)÷(1/6) = 4/1 = 4

Step 3, reduce the result

Any of these fractions is reduced by cancelling common factors from numerator and denominator. Your fractions here don't have any common factors, so there is nothing to cancel.

_____

Your product is ...

(4/9) ÷ (-5/7) = -(4·7)/(9·5) = -28/45

6 0

3 years ago

Write an exponential function whose graph contains the points (1, 6) and (0, 2).

12345 [234]

Answer:

y = 2 $(3)^{x}$

Step-by-step explanation:

The exponential function is of the form

y = a $(b)^{x}$

To find a and b substitute the given points into the equation

Using (0, 2), then

2 = a $(b)^{0}$ ⇒ a = 2

Using (1, 6), then

6 = 2 $(b)^{1}$ ⇒ b = 3

Equation is y = 2 $(3)^{x}$

6 0

3 years ago

Find the value of each variable. Assume it is a 45 45 90 triangle. Round to the nearest tenth.

Arte-miy333 [17]

Answer:

x = 6

y = 45 degrees

Step-by-step explanation:

Here, we want to get the measure of x and y

For a 45-45-90 triangle, the measure of each of the internal angle asides the right angle is 45 degrees

This mean y is 45

To get x, we know we have an isosceles triangle

So the length of the third ungiven leg is x too

Mathematically, the square of the hypotenuse (side facing the right angle) is equal the sum of the squares of the two other sides

(6 √2)^2 = x^2 + x^2

72 = 2x^2

x^2 = 72/2

x^2 = 36

x = √36

x = 6

4 0

3 years ago

What number is one hundred thousand more than 75,000?

Gwar [14]

The answer is 175,000

6 0

3 years ago

Which expression represents the phrase: 8 less than the product of 6 and a number, x?A. 8 − 6xB. 6x − 8C. (6 + x) − 8D. 8 − (6 +

olganol [36]

Answer:

69 over 420

Step-by-step explanation:

trust me

4 0

3 years ago