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earnstyle [38]
3 years ago
8

What is the positive solution of x2 – 36 = 5x?

Mathematics
1 answer:
goldenfox [79]3 years ago
3 0

Answer:

9

Step-by-step explanation:

x² − 36 = 5x

x² − 5x − 36 = 0

(x − 9) (x + 4) = 0

x = 9 or -4

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Y=-1/2(x+ 5)^2-2 Step by Step HELP
Zina [86]
y=-\frac{1}{2}(x+5)^2-2\\
y=-\frac{1}{2}(x^2+10x+25-2)\\
y=-\frac{1}{2}(x^2+10x+23)\\


this is not factorable so you must apply the quadratic formula and you'll end up with 

x=-5-2i
x=-5+2i
4 0
4 years ago
Read 2 more answers
If log, 5 = 0.41, find log, 125.
Lubov Fominskaja [6]

Answer:

1

Step-by-step explanation:

do u add

5 0
3 years ago
the width of a rectangle is 2/3 the length. the perimeter of the rectangle is 15 centimeters. what is the length of the rectangl
tester [92]
Lenght is 4 1/2 cm
P=2L +2W
15cm = 2L + 2(2/3L)
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15cm ÷ 2 4/3  = 2 4/3L ÷ 2 4/3
4 1/2cm = L

Check
P=2L +2W
P=2(4.5) +2(3)
15= 9 +6
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4 0
3 years ago
58.(A) (5pts)A certain type of bacteria, given favorable growth medium, quadruples in population every 6 hours. Given that there
Jet001 [13]

Answer:

157286400 bacteria

Step-by-step explanation:

We are given the following in the question:

The bacteria increases 4 times every 6 hours.

Initially there are 150 bacteria.

Thus, we can write the function for number of bacteria after x hours,

f(x) = 150(4)^{\frac{x}{6}}

We have to find the number of bacteria in 2.5 days.

1 day = 24 hours

Thus,

2.5\text{ days} = 24\times 2.5 = 60\text{ hours}

Putting x = 60 in the above equation, we get,

f(60) = 150(4)^{\frac{60}{6}} = 150(4)^{10} = 157286400

Thus, there will be 157286400 bacteria in two and a half days.

5 0
4 years ago
Mariah has a spinner that has 10 equal sections, each containing a different number from 1 to 10. Mariah determines about how ma
Akimi4 [234]

Answer:

She wrote a 4 instead of a 3.

There are only 3 numbers that are greater than 7. They are 8, 9, and 10. Mariah must have include 7 in her list. That is how she got 4 instead of 3.

8 0
3 years ago
Read 2 more answers
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