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Aneli [31]
2 years ago
8

Which exponential equation is equivalent to the logarithmic equation below? log478=a

Mathematics
1 answer:
zheka24 [161]2 years ago
3 0
I think the answer is D
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Help me, please? I don't get it
Korvikt [17]

Answer:

1/10 = 2/20

1/3 = 3/9

5/7 = 15/21

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
For the function f(x)=8(x+10), find f^-1(x)
NeTakaya
In other words, find the inverse of the given function f(x).

1.  Replace f(x) with "y."     y = 8(x+10)
2.  Interchange x and y:      x = 8(y+10)
3.  Solve this for y:             y+10 = x/8, or y = x/8 - 10

                                   -1
4.  Replace "y" with "f     (x) "       

          -1           x-80
         f   (x) = ----------     (Answer)
                            8 
6 0
2 years ago
Jake used integers to record his costs and earnings from selling homemade muffins. He spent $16 on ingredients. He earned $125 f
denis23 [38]

-16 and 125

Step-by-step explanation: hope this helped!

6 0
3 years ago
Read 2 more answers
drew makes $8 a week on allowance and pends $3. write an expression to show how much he has at the end of the week. Use parenthe
postnew [5]
X is how much he makes in a week. 7(8-3)=x
6 0
3 years ago
In a national survey of 1987 adults, 1570 responded that lack of respect and courtesy in American society is a serious problem,
Alik [6]
<h2>Answer with explanation:</h2>

As per given , we  have

H_0: p\leq\dfrac{3}{4}\\\\H_a: p>\dfrac{3}{4}

Since , alternative hypothesis is right tailed, so the test is a right tailed test.

n= 1987

Proportion of adults believe that rudeness is a worsening problem : p=\dfrac{1257}{1987}\approx 0.6326

Test statistic : z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{ 0.6326-0.75}{\sqrt{\dfrac{0.75(1-0.75)}{1987}}}=-12.09

(since , the normal curve takes values of z from -7 to 7, so we use critical value to draw conclusion.)

The critical value for a significance level of 0.005= 1.645

Since , absolute test statistic value (12.09) is greater than the critical value (1.645), it means there is statistical significance and so we reject the null hypothesis.

3 0
3 years ago
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