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andre [41]
3 years ago
11

What is the only solution of 2x2 + 8x = x2 – 16?

Mathematics
2 answers:
posledela3 years ago
8 0
Simplify and solve quadratic equation:

2x^2+8x=x^2-16 => x^2+8x+16 => (x+4)^2=16 => x={-4,-4}
So numerically the only solution is x=-4.

However, mathematically, there are two solutions, {-4,-4}, or x=4,multiplicity 2.
True [87]3 years ago
4 0

Answer:

(-4,-4)

Step-by-step explanation:

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Smalltown has two water filters that clean the town's drinking water. Filter A can filter up to 149.88 gallons of water per minu
kap26 [50]

Answer:

answer is mostlikly D when I times everything comes out to 23,973 so I on lb y assume that its D

4 0
3 years ago
Mr. Loretta spends $4.83 on pens and notebooks. Pens cos $0.95 each. Notebooks cost $0.99 each. How many of each item does he bu
VMariaS [17]
<h2>The total number of items does he buy 5 (three pens and two notebooks).</h2>

Step-by-step explanation:

The total amount spend by Mr. Loretta = $4.83

The cost of each pen = $0.95 and

The cost of each notebook = $0.99 and

To find, total number of items he buy = ?

∴ The cost of one pen and one notebook = $0.95 + $0.99 = $1.94

The cost of two pens and two notebooks = $1.94 × 2 = $3.88

∴ The cost of three pens and two notebooks  = $3.88 + $0.95 = $4.83

Thus, the total number of items does he buy 5 (three pens and two notebooks).

4 0
3 years ago
There are 40 students in a class.
VashaNatasha [74]

Answer:

6 boys have brown hair.

Step-by-step explanation:

40*0.6 = 24 boys in the class.

24 * 0.25 = 6 boys have brown hair.

3 0
3 years ago
Read 2 more answers
Look at the graph.
SIZIF [17.4K]

Answerpizza:

Step-by-step explanation:

7 0
3 years ago
What is the inverse of the function f(x) = 2x – 10?
Dvinal [7]
ANSWER:

f(x)⁻¹ = (x+10)/2

WORKING OUT:

f(x) = 2x - 10

y = 2x - 10

*Replace all 'y' values with 'x' and vice versa*

x = 2y - 10

*Make y the subject of the equation*

2y = x+10

y = (x+10)/2
5 0
3 years ago
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