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3 years ago

If a, b, c, d are positive, and if a/b < c/d , then which statement is ALWAYS true?

Mathematics

2 answers:

CaHeK987 [17]3 years ago

5 0

Answer: it has to be A)

:)))))))))))))

Dahasolnce [82]3 years ago

3 0

I believe the answer is c

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Help pls properties of equality

Colt1911 [192]

For given equations, the reason/properties are:

equation steps properties/reason

1. m/-3 + 10 = -1 Given

2. m/-3 = -11 subtract 10 from each side

3. m = 33 multiply each side by -3

equation steps properties/reason

1. (5y - 1)/2 = 7 Given

2. 5y - 1 = 14 multiply each side by 2

3. 5y = 15 add 1 on both the sides

4. y = 3 divide each side by 5

In this question, we have been given two equations.

We need to state the reason foe each step.

Consider equation (2),

m/-3 + 10 = -1 ..............(Given)

m/-3 = -11 .....................(subtract 10 from each side)

m = 33 ....................(multiply each side by -3)

Now, consider equation (3),

(5y - 1)/2 = 7 ..........Given

5y - 1 = 14 ............multiply each side by 2

5y = 15 ..............add 1 on both the sides

y = 3 ..................divide each side by 5

Therefore, for given equations:

equation steps properties/reason

1. m/-3 + 10 = -1 Given

2. m/-3 = -11 subtract 10 from each side

3. m = 33 multiply each side by -3

equation steps properties/reason

1. (5y - 1)/2 = 7 Given

2. 5y - 1 = 14 multiply each side by 2

3. 5y = 15 add 1 on both the sides

4. y = 3 divide each side by 5

Learn more about an equation here:

brainly.com/question/649785

#SPJ1

7 0

1 year ago

What whole number does this round to?

serious [3.7K]

To find this answer, just look at the place value next to the one you are trying to find.

You are trying to find the whole number (or 7). The place value digit to the right is 4, which is less than 5. Round down

Your answer is 7

hope this helps

8 0

4 years ago

F(-4)=8 and f(-1)=4 write the linear equation

kobusy [5.1K]

$f(-4)=8\to(-4,\ 8)\\\\f(-1)=4\to(-1,\ 4)$

The point-slope formula of a line:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

Substitute:

$m=\dfrac{4-8}{-1-(-4)}=\dfrac{-4}{3}=-\dfrac{4}{3}\\\\y-8=-\dfrac{4}{3}(x-(-4))\\\\y-8=-\dfrac{4}{3}x-\dfrac{16}{3}\ \ \ \ |+8\\\\y=-\dfrac{4}{3}x-\dfrac{16}{3}+\dfrac{24}{3}\\\\y=-\dfrac{4}{3}x+\dfrac{8}{3}\ \ \ |\cdot3\\\\3y=-4x+8\ \ \ |+4x\\\\4x+3y=8$

The slope-intercept form: $y=-\dfrac{4}{3}x+\dfrac{8}{3}$

The standard form: $4x+3y=8$

7 0

3 years ago

Find the sum.<br> 10 + 12 + 14 + ... + 80

lyudmila [28]

Answer:

1620

Step-by-step explanation:

The amount of even integers between 10 and 80 inclusive is 36 (5 for each interval of 10 [e.g., 10-19 has 5, 20-29 has 5] and one extra for 80).

Since the numbers are consecutive even numbers, we can use the fact that the sum of the numbers is equal to the average of the numbers, times the number of numbers.

The average of the numbers is 45, since $\frac{10+80}{2}=45$ . We can use only the two outer numbers to determine the average since the numbers are all evenly spaced as they are consecutive even numbers.

$45\times36=1620$ , so the sum is 1620.

8 0

3 years ago

3^2-2^3 what is that

quester [9]

Answer:

Step-by-step explanation:

3^2-2^3

3^2 = 9

2^3 = 8

9-8 = 1

5 0

4 years ago

Read 2 more answers