3 years ago

Need help on this!!!!

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

5 0

I am not good with that sorry

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Determine the value of x to the nearest thousandth in the equation 8(2)^x+3=48

solong [7]

You probably mean either

$8\cdot2^x + 3 = 48$

$8\cdot2^{x+3} = 48$

Write 8 = 2³, so that in the first interpretation,

$8\cdot2^x = 2^3 \cdot 2^x = 2^{x + 3}$

and in the second,

$8\cdot2^{x+3} = 2^3 \cdot 2^{x+3} = 2^{x + 6}$

Then in the first interpretation, we have

$2^{x + 3} + 3 = 48 \implies 2^{x + 3} = 45 \implies x + 3 = \log_2(45) \implies x = \log_2(45) - 3 \approx \boxed{2.492}$

Otherwise, the second interpretation gives

$2^{x + 6} = 48 \implies x + 6 = \log_2(48) \implies x = \log_2(48) - 6 \approx -0.415$

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Liula [17]

2000x7/100=140
2000-140=1860

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3 years ago

If two angles have a sum of 90, then they are ?

ASHA 777 [7]

if 2 angles whose sums are 90 then the angles are Complementary Angles if the 2 angles whose sums are 180 they are Supplementary angles

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The heat in the house is set to keep the minimum and maximum temperatures (in degrees Fahrenheit) according to the equation |x –

dmitriy555 [2]

$|x-72.5|=4 \\
x-72.5=-4 \ \lor \ x-72.5=4 \\
x=-4+72.5 \ \lor \ x=4+72.5 \\
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The minimum and maximum temperatures in the house are 68.5°F and 76.5°.

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3 years ago

4+(x+y)=(4+ )+y please answer I need it now

Schach [20]

x=0

4+(x+y)=(4+)+y

4 + x + y = 4 + y

Subtract y from both sides

4 + x + y - y = 4 + y - y

Simplify

4 + x = 4

Subtract 4 from both sides

4 + x - 4 = 4 - 4

Simplify

x = 0

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3 years ago