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2 years ago

Which of the following proportions is false? Select one:

Mathematics

1 answer:

Nana76 [90]2 years ago

8 0

Answer:

18/48 = 30/50 is false

Step-by-step explanation:

20/50 and 40/100 both equal 0.4

12/15 and 20/25 both equal 0.8

etc.

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I need help with this one math question please!

den301095 [7]

Answer:

see explanation

Step-by-step explanation:

Assuming the fractions are being multiplied

Factorise the denominators of both fractions

x² - 3x - 10 = (x - 5)(x + 2)

x² + x - 12 = (x + 4)(x - 3)

The product can now be expressed as

$\frac{x-5}{(x-5)(x+2)}$ × $\frac{x+2}{(x+4)(x-3)}$

Cancel (x - 5) and (x + 2) on the numerators/ denominators, leaving

$\frac{1}{(x+4)(x-3)}$ = $\frac{1}{x^2+x-12}$

3 0

2 years ago

There are two boxes containing only black and orange pens.

cestrela7 [59]

Answer:

Event 3 -> Event 1 -> Event 4 -> Event 2

Step-by-step explanation:

The probability of choosing a certain pen is the number of that pen in the box over the total number of pens in the box.

So we have that:

Event 1: We have 4 black pen and 20 total pens, so P = 4 / 20 = 1 / 5

Event 2: All pens are black or orange so the probability is 1.

Event 3: We don't have white pens, so the probability is 0.

Event 4: We have 2 black pen and 5 total pens, so P = 2 / 5

Listing from least likely to most likely, we have:

Event 3 -> Event 1 -> Event 4 -> Event 2

3 0

3 years ago

Express the equation x = 10 and y = -3 as a linear equation in two variables

34kurt

Answer:

For x = 10:

$x + 0y - 10 = 0$

For y = - 3:

$0x + y + 3 = 0$

Step-by-step Explanation:

Before we start let's recall the formula for the linear equations.

$ax + bx = c$

So first let's solve for x=10:

$x = 10$

Move 10 to the other side.

$x - 10 = 0$

As there is no y given we will simply write 0y.

$x + 0y - 10= 0$

Now let's solve for y=-3:

$y = - 3$

Move -3 to the other side.

$y + 3 = 0$

As there is no x given we will simply write 0x.

$0x + y + 3 = 0$

If this answer helped you, give this answer a heart, rate it and if you could then please mark it brainliest. Thanks!

8 0

1 year ago

Solve for x. ILL GIVE BRAINLIEST

Elodia [21]

Answer:

Step-by-step explanation:

the red height is 48 by pythagorean, and by 3:4:5 similarity x=64.

7 0

2 years ago

Marcy determined that her father's age is the quotient of her age and 5, increased by 10. If x represents Marcy's age, write an

Hoochie [10]

Answer:

x / 5 + 10 or

Step-by-step explanation:

4 0

2 years ago