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3 years ago

13

Work out: 3ab - 9ab + 7ab Please answer ASAP.

1 answer:

adelina 88 [10]3 years ago

6 0

The answer to this question is 1ab

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Solve the proportion<br> 7/2=x/16

alina1380 [7]

X=56
7÷2=3.5 and 56÷16=3.5

4 0

3 years ago

How to answer it how do I solve it

Furkat [3]

She earns $12 per hour. You divide 24 by 2; 60 by 5; 96 by 8 equals 12. So he ears $12 per hour

8 0

4 years ago

One positive number is 9 more than twice another. If their product is 95, find the numbers.

mafiozo [28]

Answer:

The numbers are 19 and 5

Step-by-step explanation:

Given

Let the numbers be $x\ and\ y.$

So:

$x = 9 + 2y$ --- First statement

$x*y = 95$ --- second statement

Required

Find x and y

Substitute $x = 9 + 2y$ in $x*y = 95$

$(9 + 2y) * y = 95$

$9y + 2y^2 = 95$

Rewrite as:

$2y^2 + 9y - 95 = 0$

Expand

$2y^2 -10y +19y- 95 = 0$

Factorize

$2y(y -5) +19(y- 5) = 0$

$(2y +19)(y- 5) = 0$

Solve for y

$2y + 19 =0$ or $y - 5 = 0$

$2y = -19$ or $y = 5$

$y = -\frac{19}{2}$ or $y=5$

Since the numbers are positive, we take only:

$y=5$

Substitute $y=5$ in $x = 9 + 2y$

$x = 9 + 2 * 5$

$x = 9 + 10$

$x = 19$

<em>The numbers are 19 and 5</em>

5 0

3 years ago

6. Jenny is training for a marathon and runs and a constant rate of 6 miles per hour.

stepan [7]

Alrighty! D represents the miles. It is constant, or exact, the whole time (t).

Knowing that, we can write the equation, almost like a story.

Math: 6t=d

Words: 6 miles every hour= results in your distance.

Does the make sense?

4 0

3 years ago

What the fraction of 0.13

elixir [45]

Answer:

13/100

Step-by-step explanation:

3 0

3 years ago