3 years ago

Brainlist! :c y no one helping

Mathematics

1 answer:

katrin [286]3 years ago

8 0

Answer:

C and D are same options

(D) $f(x) = x^2$

Step-by-step explanation:

$f(x) = {x}^{2} \\ plug \: x = - x \\ f( - x) = {( - x)}^{2} = {x}^{2} \\ f( - x) = f(x)$

You might be interested in

(-0.3) ÷ (-0.2)+(-2.56)<br><br><br> In whole numbers with steps please

Valentin [98]

Answer:

-1 to the nearest whole number.

Step-by-step explanation:

(-0.3) ÷ (-0.2)+(-2.56)

Order of operations - the division is done first:

= 1.5 = (-2.56)

= 1.5 - 2.56

= -1.06.

6 0

3 years ago

Michelle is 7 years older than her sister Joan, and Joan is 3 years younger than their brother Ryan. If the sum of their ages is

Zielflug [23.3K]

Answer:

Step-by-step explanation:

We can create a systems of equations. Assuming $m$ is Michelle's age, $j$ is Joan's age, and $r$ is Ryan's age, the equations are:

$m = j + 7$

$j = r-3$

$m+j+r = 64$

We can use substitution, since we know the "values" of m and j.

$(j+7)+(r-3)+r = 64\\(j+7)+(2r-3)=64\\2r + j + 4 = 64\\2r + j = 60\\\\$

$r = 21, j = 18$

So we know that Joan is 18 years old.

Hope this helped!

8 0

3 years ago

Walnuts are 5 dollars a pound. Jack brought p pounds of walnuts and paid $25. Translate the following into a mathematical equati

Travka [436]

Answer:

7.95 per pound.

Step-by-step explanation:

8 0

3 years ago

The school football team needs to raise at least $850 to buy new practice equipment. The team received a donation of $125 and al

navik [9.2K]

Answer:

182

Step-by-step explanation:

850-125=725

725/4=181.25

So you need at least 182 tickets sold.

4 0

3 years ago

Four distinct integers a, b, c and d have the property that when added in pairs, the sums 16, 19, 20, 21, 22, and 25 are obtaine

Nutka1998 [239]

Answer: The four integers are: 6,8,11 and 14

Step-by-step explanation:

The attachments below contains step-by-step explanations of the guessing and checking approach that would be used to arrive at the answer.

The calculations on the attachments is from left to right.

8 0

3 years ago