4 years ago

3(4-8 + 4 to the second power ( 2+5 )

Mathematics

1 answer:

Verdich [7]4 years ago

3 0

Answer:

324

Step-by-step explanation:

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Jamie King wants to buy a new car in 5 years. Jamie

Alenkasestr [34]

Jamie King will have $12,100.25

6 0

3 years ago

The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

8 0

4 years ago

2x2 + 3x – 10 = 0<br> Find the discriminant for the quadratic equation

bija089 [108]

Answer:

The solutions are:

x=2

x=−5

Explanation:

2x2+3x−10=0

hope this helps (:

Step-by-step explanation:

4 0

3 years ago

Plsss helpp mathhh and thank u if u answer

kompoz [17]

Answer:

a. 60 centimeters

b. 67 centimeters

Step-by-step explanation:

12 × 4 = 48

(6 × 4) ÷ 2 = 12

48 + 12 = 60

7 × 10 = 70

(2 × 3) ÷ 2 = 3

70 - 3 = 67

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3 years ago

True or false domain,first element and y-value all have the same meaning

Delvig [45]

The answer is false. :) and do u need points to ask questions?

6 0

4 years ago

Read 2 more answers