All categories

3 years ago

Can u guys PLEASE answer question g. THIS IS URGENT

Mathematics

2 answers:

ivann1987 [24]3 years ago

7 0

Answer:

Laura is 8

Step-by-step explanation:

let Laura's age now be x then Daniel's age is 2x

4years ago

Laura was x - 4 and Daniel 2x - 4, thus

2x - 4 = 3(x - 4) ← 3 times Laura's age

2x - 4 = 3x - 12 ( subtract 2x from both sides )

- 4 = x - 12 ( add 12 to both sides )

8 = x

Thus Laura is 8 years old

allsm [11]3 years ago

7 0

Answer:

8 years

Step-by-step explanation:

Daniel's current age: D

Laura's current age: L

D = 2L (1)

D - 4 = 3(L - 4) (2)

(2) D - 4 = 3L - 12

D = 3L - 8

(1) 3L - 8 = 2L

L = 8

You might be interested in

I need help answering this ASAP

Leokris [45]

Answer:

x greater than and equal to -7

Step-by-step explanation:

Parabola touches at -7 and is going straight towards all positive integers

Therefore the domain is all numbers greater than or equal to -7

8 0

2 years ago

I need this by 3:00pm today pleaE help a girl out

padilas [110]

Answer:

Step-by-step explanation:

I think your answer is a

6 0

3 years ago

Need help for real plssss

djverab [1.8K]

Answer:

12% is the answer for this question

4 0

3 years ago

Find the product of 9x(-3x²y-7xz)

kogti [31]

Answer:

$- 27 {x}^{3} y - 63 {x}^{2} z$

Step-by-step explanation:

$9x( - 3 {x}^{2} y - 7xz)$

$= 9x \times ( - 3 {x}^{2} y) + 9x \times ( - 7xz)$

$= - 27 {x}^{3} y - 63 {x}^{2} z$

4 0

3 years ago

The variable z is inversely proportional to x. When x is 19, z has the value 0.10526315789474. What is the value of z when x= 28

telo118 [61]

When two variables are inversely proportional the relation between them can be written as:

$z=\frac{k}{x}$

Here, k is the constant of proportionality and is always equal to the product of the two variables. So using the given values of z and x, we can find k first.

$k=zx\\ \\ k=0.10526315789474(19)\\ \\ k=2$

The constant of proportionality for the given inverse proportion comes out to be 2. Using the value of k in the equation, we get:

$z=\frac{2}{x}$

We have to find the value of z when x=28. So replacing x by 28, we get:

$z=\frac{2}{28}\\ \\ z=0.07142857143$

Thus, rounding of to nearest thousand the value of z comes out to be 0.071 if x is equal to 28.

6 0

3 years ago