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Mariulka [41]
3 years ago
6

Find the two values for 81 squared

Mathematics
2 answers:
slava [35]3 years ago
7 0
The two values are positive 9 and negative 9
adell [148]3 years ago
6 0
The answer is plus or minus nine
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What is the inverse of the function below? f(x) = x - 4
iren2701 [21]

Answer:

f^-1(x) = x + 4

Step-by-step explanation:

5 0
4 years ago
Solve the equation. Round to the nearest hundredth. Show work.
Burka [1]

Answer:

x=-0.75

Step-by-step explanation:

The given equation is

4^{-5x-7}=6^{2x-1}

We take logarithm of both sides to base 10.

\log(4^{-5x-7})=\log(6^{2x-1})

(-5x-7)\log(4)=(2x-1)\log(6)

We expand the brackets to get;

-5x\log(4)-7\log(4)=2x\log(6)-\log(6)

Group similar terms;

-7\log(4)+\log(6)=2x\log(6)+5x\log(4)

-7\log(4)+\log(6)=(2\log(6)+5\log(4))x

\frac{-7\log(4)+\log(6)}{(2\log(6)+5\log(4))}=x

x=-0.752478

To the nearest hundredth.

x=-0.75

3 0
3 years ago
At a manufacturing plant where switches are made, it is a known fact that 2% of all switches are defective. If two switches are
olchik [2.2K]

Answer:

The probability that exactly one switch is good is

P(x) =0.0392

Step-by-step explanation:

The probability that a switch is defective is:

P(D) = \frac{2}{100} =0.02

The probability that a switch is not defective is

P(D') = 1-P(D)=0.98

Therefore, if two switches are selected, the probability that exactly 1 is good is:

P(1=1)=P (D) P (D ') + P (D') P (D)

P(x)=(0.02)(0.98) + (0.98)(0.02)

P(x) =0.0392

6 0
3 years ago
Read 2 more answers
Sari's mom went to the store to buy some grapes,apples and bananas. The total mass of the fruit is 72kg. She bought 18kg of grap
il63 [147K]

Answer: 25kg

Step-by-step explanation:

18 + 29 = 47

72 - 47 = 25

She got 25kg of bananas.

4 0
3 years ago
The large sphere has a diameter of 20 feet. Which expression represents the volume, in cubic units, of the shaded part of the sp
Marat540 [252]
<span>the answer is b. π(10^3) – π(4^3)</span><span>                                                       </span>
3 0
3 years ago
Read 2 more answers
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