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3 years ago

I wrote an equation using parentheses and all four operations with an answer of 25 what might the equation have been

Mathematics

1 answer:

Dmitriy789 [7]3 years ago

3 0

(3+6)×(9÷3)-2 would be one of the answers

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If f varies jointly as q^2 and h and f=-81 when q=3 and h=3 find f when q =4 and h=3

Aneli [31]

Answer:

F=48

Step-by-step explanation:

see the explanation and workings in the picture above.

5 0

2 years ago

Please help me out!

seropon [69]

Answer:

Second option

Third option

Fourth option

Step-by-step explanation:

We have the following quadratic function

$f(x) =(x-1)(x+7)$

Use the distributive property to multiply the expression

$f(x) =x^2+7x-x-7$

$f(x) =x^2+6x-7$

For a function of the form $f (x) = ax ^ 2 + bx + c$ the x coordinate of the vertex is:

$x =-\frac{b}{2a}$

Then in this case the coordinate of the vertex is:

$x =-\frac{6}{2(1)}$

$x =-3$

To obtain the y coordinate of the vertex we evaluate the function at $x = -3$

$f(-3) =(-3)^2+6(-3)-7$

$f(-3) =9-18-7$

$f(-3) =-16$

Then the vertex is: (-3, -16)

We can see in the graph that the zeros of the function are x=1 and x=-7

Then the function is decreasing from -∞ to -3 and then it is increasing from -3 to ∞

The function is positive for $x$ and $x> 1$

The correct answers are:

Second option

Third option

Fourth option

7 0

2 years ago

Which choice could be the equation of a line parallel to the line represented by this equation? y=7/4x - 6

stealth61 [152]

The answer is c, because it is the same line, just higher.

7 0

3 years ago

Which angle is complementary to Angle C O D?

zepelin [54]

Answer:

Angle B O C

Step-by-step explanation:

Complementary angles add up to 90

Angles COD and BOC form a right angle which means they add up to 90.

8 0

2 years ago

Read 2 more answers

Help and explain explain !!!!!!!!!!

tigry1 [53]

Answer:

$x=-1\text{ or }x=11$

Step-by-step explanation:

For $a=|b|$ , we have two cases:

$\begin{cases}a=b,\\a=-b\end{cases}$

Therefore, for $18=|15-3x|$ , we have the following cases:

$\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}$

Solving, we have:

$\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}$ .

Therefore,

$\implies \boxed{x=-1\text{ or }x=11}$

3 0

2 years ago