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saveliy_v [14]
3 years ago
5

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

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What does x = and round to the nearest tenth
larisa [96]

Answer:

X=8.6

Step-by-step explanation:

;)

4 0
3 years ago
You are given a line that has a slope of 4 and passed through the point (3/8, 1/2). Which statements about the question of the l
alexgriva [62]

Answer:

Statement 1, 2 and 4 are true where as statement 3 is not true.

Step-by-step explanation:

<u>Statement 1: The y-intercept is -1</u>

<em>Point (3/8, 1/2)</em>

<em>Slope = m = 4</em>

<em>y = mx + c</em>

<em>1/2 = 4(3/8) + c</em>

<em>1/2 = 3/2 + c</em>

<em>1/2 = 3/2 + 2c/2</em>

<em>-2 = 2c</em>

<em>c = -1 </em>

This statement is true as the y-intercept is -1.

<u>Statement 2: The slope intercept equation is y= 4x - 1</u>

<em>slope = m = 4</em>

<em>y-intercept = c = -1</em>

<em>y = mx + c</em>

<em>y = 4x - 1</em>

This statement is true as the slope intercept equation is y= 4x -1

<u>Statement 3: The point slope equation is y - 3/8 = 4 (x - 1/2)</u>

<em>Point slope equation: y - y1 = m (x - x1)</em>

<em>Points: (x, y) (3/8, 1/2)</em>

<em>y1 = 1/2</em>

<em>x1 = 3/8</em>

<em>Slope = m = 4</em>

<em>y - 1/2 = 4 (x - 3/8)</em>

This statement is not true as the slope intercept equation is y - 1/2 = 4 (x - 3/8) instead of y - 3/8 = 4 (x - 1/2).

<u>Statement 4: The point (3/8, 1/2) corresponds to (x1, y1) in the point slope form of the equation</u>

This statement is true as shown in statement 3's explanation where x1 = 3/8 and y1 = 1/2

!!

6 0
3 years ago
PLZ PLZ HELP ASAP!!!PLZ PLZ HELP ASAP!!!PLZ PLZ HELP ASAP!!!PLZ PLZ HELP ASAP!!!PLZ PLZ HELP ASAP!!!PLZ PLZ HELP ASAP!!!PLZ PLZ
juin [17]

Answer:

<em>the answer is K for #9</em>

Step-by-step explanation:

6 0
3 years ago
factorise the following 1. x²-2x+15.... 2. y²-19y+90​
Marta_Voda [28]

Answer:

1. x²-2x+15

This can't be factored, I've tried multiple ways now, but it just can't be factored.

2. y²-19y+90​

Let's factor y^2−19y+90

y^2−19y+90

The middle number is -19 and the last number is 90.

Factoring means we want something like

(y+_)(y+_)

Which numbers go in the blanks?

We need two numbers that...

   Add together to get -19

   Multiply together to get 90

Can you think of the two numbers?

Try -9 and -10:

   -9+-10 = -19

   -9*-10 = 90

Fill in the blanks in

(y+_)(y+_)

with -9 and -10 to get...

(y-9)(y-10)

Answer:

(y−9) (y−10)

3 0
2 years ago
4 = -8Z - 7 + 8z<br> Giving the brainliest to whoever gets the right answer.
liubo4ka [24]

Answer:

No Solution

Step-by-step explanation:

if one side is 4, another side -8z and +8z cancels, left -7

4 ≠ -7

8 0
3 years ago
Read 2 more answers
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