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faltersainse [42]
3 years ago
6

Solve for x: 3.2x - 7.4 = -7.8x + 3.6 1. 1 2. 0.8 3 3.8 4. 0.5

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0

Answer:

The value of x is 1.

Step-by-step explanation:

You have to move all the x-terms to one side and the unrelated values to other side :

3.2x - 7.4 =  - 7.8x + 3.6

3.2x + 7.8x = 3.6 + 7.4

Next, you have to add up :

11x = 11

Lastly, you have to divide it by 11 :

x = 11 \div 11

x = 1

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E=mc^2 in terms of m
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7 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
3 years ago
All of the following represent the same function except ____.
Whitepunk [10]

Answer:

I believe it's C

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Hi please help me answer this!!
just olya [345]

The numbers that are irrational are B. √72 and D.√23.

<h3>What are irrational numbers?</h3>

Irrational numbers are those that have infinite numbers after the decimal. These numbers are also none repeating.

When the above are solved:

√25 = 5

√144 = 12

√23 = 4.79583152331...

√72 = 8.48528137424...

The only two numbers with non-repeating and infinite numbers are √72 and √23.

Find out more on irrational numbers at brainly.com/question/20400557

#SPJ1

7 0
1 year ago
Change 5.5 into centimetres
jolli1 [7]
5.5 inches? If so 13.97 cm.
8 0
3 years ago
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