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algol13
3 years ago
5

How do I factor -8X^2+200?

Mathematics
1 answer:
Mandarinka [93]3 years ago
5 0
8x² + 200
-8(x²) - 8(-25)
-8(x² - 25)
-8(x² + 5x - 5x - 25)
-8(x(x) + x(5) - 5(x) - 5(5))
-8(x(x + 5) - 5(x + 5))
-8(x - 5)(x + 5)
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Will mark brainliest for whoever answers
PilotLPTM [1.2K]

Answer:

x=1

Step-by-step explanation:

8 0
4 years ago
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A 10-pound block of ice melts at a rate of 3% per hour. Find the weight of the block of ice after 1 day.
mylen [45]

Answer:

The weight of the block of ice after 1 day is of 4.81 pounds.

Step-by-step explanation:

Equation for exponential decay:

The equation that models an amount after t hours, subject to exponential decay, is given by:

A(t) = A(0)(1 - r)^t

In which A(0) is the initial amount and r is the decay rate, as a decimal.

A 10-pound block of ice melts at a rate of 3% per hour.

This means that A(0) = 10, r = 0.03

So

A(t) = A(0)(1 - r)^t

A(t) = 10(1 - 0.03)^t

A(t) = 10(0.97)^t

Find the weight of the block of ice after 1 day.

One day has 24 hours, so this is A(24).

A(24) = 10(0.97)^{24} = 4.81

The weight of the block of ice after 1 day is of 4.81 pounds.

6 0
3 years ago
You went to lunch with your friend and the bill was $19 your lunch is three dollars more than your friends how much was your fri
ad-work [718]

Answer:

Let x = cost of your friend's lunch.


x + x + 3 = 19


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3 0
3 years ago
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Please help I'm being timed....<br> NO LINKS PLEASE
schepotkina [342]

Answer: 3.40

Step-by-step explanation: You would use sin and solve. Lmk if you need an explanation.

3 0
3 years ago
Find the value of the expression 2x3 + 3y2 − 17 when x = 3 and y = 4. A)26 B)85 C)943 D)1,927
Alborosie
Ok so assumin by 2x3 you mean 2x^3 or 2 times x cubed

PEMDAS
parenthasees
exponentes
multiply
divide
add
subtract

exponents

we have
2(3)^3+3(4)^2-17
exonents
3^3=27
4^2=16

now we have
2(27)+3(16)-17
distribute (multply)
2 tiems 27=54
3 times 16=48

now we have
54+48-17
add/subtract
85

answer is 85



3 0
4 years ago
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