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3 years ago

Pls can anyone help with this with clear steps

Mathematics

2 answers:

stealth61 [152]3 years ago

8 0

Answer:

Let the age of Aman's son is x years.

So the age of Aman will be 3x years.

Ten years ago, the age of Aman's son = x - 10 and Aman's age = 3x - 10.

So according to question,

5(x - 10) = 3x - 10

or 5x - 50 = 3x - 10

Transposing 3x to the LHS and -50 to the RHS:

5x - 3x = -10 + 50 = 40

or 2x = 40

or x = 20

So Aman's age = 3x = 60 years and

Aman's son's age = x = 20 years.

drek231 [11]3 years ago

5 0

I hope this answer will help you

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Solve 3÷x-1 - 4÷x+2=2

natita [175]

3/ x -1 - 4 / x + 2=2
I work a bit backwards so, lets try looking at it like this,
3/ X
-4/X
what could X be to let these be positive since our outcome is positive?
3/0=0
4/0=0
so 3/0-1= -1
-1-4/0= 0
+2= 2
so 2=2
so now we go and fill it in to make sure
3/0-1-4/0+2=2
and it works so,
X= 0
I hope this helped some

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4 years ago

What is the median of these scores, 98,82,100,84?

Lerok [7]

Answer:

Hello! The median is 82 and 100.

Step-by-step explanation:

The median is just the number or numbers in the middle! Hope this helps!

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3 years ago

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What are the solutions to x2 + 8x + 7 = 0

3241004551 [841]

X^2 + 8x + 7 = 0
x^2 + 7x + x + 7 = 0
x(x + 7) + 1(x + 7) = 0
(x + 7) (x + 1) = 0

x = -7 or x = -1

6 0

3 years ago

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Which statements about the function are true? Select two

iogann1982 [59]

Answer:

The vertex of the function is at (1,-25)

Step-by-step explanation:

I think your question missed key information, allow me to add in and hope it will fit the orginal one.

Part of the graph of the function f(x) = (x + 4)(x-6) is shown below.

Which statements about the function are true? Select two

options.

The vertex of the function is at (1,-25).

The vertex of the function is at (1,-24).

The graph is increasing only on the interval -4< x < 6.

The graph is positive only on one interval, where x <-4.

The graph is negative on the entire interval

My answer:

Given the factored form of the function:

f(x) = (x + 4)(x-6)

<=> f(x) = $x^{2} - 2x -24$

We will convert to vertex form

<=> f(x) = ( $x^{2} - 2x +1$ ) - 25

<=> f(x) = $(x-1)^{2} -25$

=> the vertex of the function is: (1,-25)

We choose: a. The vertex of the function is at (1,-25)

Let analyse other possible answers:

c. The graph is increasing only on the interval -4< x < 6.

Because the parameter a =1 so the graph open up all over its domain and the vertex is the lowest point.

So the graph is increasing in the domain (1, +∞)

=> C is wrong

d. The graph is positive only on one interval, where x <-4

Wrong, The graph is positive only on one interval, where x > 6

e. The graph is negative on the entire interval

Wrong, The graph is negative only on one interval, where -4< x < 6.

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4 years ago

Emma has 56 37⁄40 bags of dog food to feed all of the dogs at the animal shelter. The dogs each eat 81⁄4 bags of food per week.

deff fn [24]

$\text{Answer: Number of weeks }=56$

Explanation:

Since we have given that

$\text{Number of bags of dog food to feed all of the dogs at the animal shelter} =56\frac{37}{40}$ $\text{Number of bags of food per week eaten by dogs }= 8\frac{1}{4}$

So,

$\text{Number of weeks worth of dog food Emma have } =\frac{56\frac{37}{40}}{8\frac{1}{4}}$

$\text{Number of weeks worth of dog food Emma have }=\frac{2240\times 4}{40\times 4}\\\text{Number of weeks worth of dog food Emma have }=\frac{2240}{40}\\\text{Number of weeks worth of dog food Emma have }=56$

∴ $\text{Number of weeks worth of dog food Emma have}=56$

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4 years ago

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Pls can anyone help with this with clear steps​

Pls can anyone help with this with clear steps