All categories

3 years ago

If 5 goldfish cost $6.45,what is the cost of 8 goldfish

Mathematics

2 answers:

Maru [420]3 years ago

8 0

6.45/5*8=$10.32 is your answer

Harrizon [31]3 years ago

7 0

Cost of 5 fishes=$6.45 Cost of 1 fish=$6.45/5 =$1.29 Cost of 8 fishes=$1.29*8 =$10.32

You might be interested in

Help pleaseeeee help ;))

KATRIN_1 [288]

I think it’s 8
Hope this helps *smiles*
Sorry if it’s wrong

6 0

3 years ago

Name the quadrant in which the angle is in cos theta>0, csc theta<0

bekas [8.4K]

Answer:

Quadrant 4

Step-by-step explanation:

Csc = 1/sin

Cos is positive in quadrants 1 and 4

Sin is negative in quadrants 3 and 4

7 0

3 years ago

I’ll mark Brainly! Andy deposits $25 in his checking account.

Dmitry_Shevchenko [17]

Answer:

1. $25

2. 12

3. -12

4. -12

5. -25

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find the cube root of 2700

Liono4ka [1.6K]

It’s about 13.925. I rounded up

3 0

3 years ago

Read 2 more answers

Find an nth-degree polynomial function with real coefficients satisfying the given conditions.

lesya692 [45]

Answer:

$\displaystyle f(x) = -2(x-2)(x^2+4)$

Step-by-step explanation:

We want to find a third degree polynomial with zeros x = 2 and x = 2i and f(-1) = 30.

First, note that by the Complex Root Theorem, since x = 2i is a root, x = -2i must also be a root.

Hence, we will have the three factors:

$\displaystyle f(x) = a(x-(2))(x-(2i))(x-(-2i))$

Where a is the leading coefficient.

Expand and simplify the second and third factors:

$\displaystyle \begin{aligned} (x-(2i))(x-(-2i)) &= (x-2i)(x+2i) \\ \\ &= x(x-2i)+2i(x-2i) \\ \\ &= (x^2 - 2ix) + (2ix - 4i^2) \\ \\ &=x^2 + 4\end{aligned}$

Hence:

$\displaystyle f(x) = a(x-2)(x^2+4)$

Since f(-1) = 30:

$\displaystyle \begin{aligned} f(x) &= a(x-2)(x^2+4) \\ \\ (30) &= a((-1)-2)((-1)^2+4) \\ \\ 30 &= -15a \\ \\ a&= -2\end{aligned}$

In conclusion, third degree polynomial function is:

$\displaystyle f(x) = -2(x-2)(x^2+4)$

5 0

3 years ago