All categories

3 years ago

Kevin is 3 years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel

Mathematics

2 answers:

alekssr [168]3 years ago

8 0

Answer:

<em>Present age of Kevin = 6 years</em>

Step-by-step explanation:

Let the present age of Daniel be 'x' years

So, present age of Kevin = (3 + x) years

Two years ago,

Kevin's age was = [(3 + x) - 2] years

& Danial's age was = (x - 2) years

Its given that two years ago, Kevin was 4 times as old as Daniel

So,

=> (3 + x) - 2 = 4(x - 2)

=> 3 + x - 2 = 4x - 8

=> 1 + x = 4x - 8

=> 3x = 9

=> x = 3

Therefore, present age of Daniel = 3 years

& Present age of Kevin = 3 + 3 = 6 years

gogolik [260]3 years ago

6 0

Answer:

kevin is 6 years old

Step-by-step explanation:

Let Kevin's age now be a

Daniel's age now be b

Kevin is 3 years older than Daniel. -> a-3 = b

Two years ago, Kevin was 4 times as old as Daniel -> a-2 = 4(b-2) = 4b -8

-> a-3 -(a-2) = b - (4b-8)

-> - 1 = -3 b +8

-> -9 = -3b

-> b = 3

-> a = 6

You might be interested in

Helpppppppppp pleaseee

Advocard [28]

Answer:

I think the answer is B , if I'm wrong lmk

6 0

3 years ago

Please help me on this one

NikAS [45]

Answer:

55.4 in³

Step-by-step explanation:

The formula for the volume of a pyramid can be found:

V = $\frac{1}{3}Bh$ , where B = area of the base and h = height of the pyramid

Since the base is a triangle, we need to use the formula for the area of a triangle:

A = $\frac{1}{2}bh$ = $\frac{1}{2}(5.7)(6.2)=17.67in^{2}$

Next, multiply the area of the base by the height of the pyramid:

17.67 x 9.4 = 166.098 ÷ 3 ≈ 55.4 in³

3 0

3 years ago

5p−9=2p+12 solve for p

joja [24]

5p-9=2p+12
5p-2p=12+9
3p=21
p=21/3
p=7

7 0

3 years ago

Read 2 more answers

100 points.

7nadin3 [17]

Answer:

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed).

Step-by-step explanation:

hope this helps if does mark brainllest

6 0

2 years ago

Write the equation of the lines resented below in slope-intercept form

scoray [572]

Slope intercept form: y = mx + b

mx = slope

b = y-intercept

We know the y intercept is 0, so nothing will be written there.

To find the slope of this line, we can use the slope formula.

$\frac{y.2 - y.1}{x.2 - x.1} = m$

We'll use the points (1, 0) and (3, 1) to find the slope.

Now we can just plug these values into the equation to find the slope.

1 - 0 / 3 - 1

1 / 2

The slope of the line is 1/2, or 0.5.

The slope-intercept form of this line can be written as:

y = 0.5x

6 0

3 years ago