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3 years ago

What expressions are equivalent to 4(4a+5) which 3 is correct?

Mathematics

1 answer:

Effectus [21]3 years ago

7 0

The answer is a,c, and d

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Evaluate f(1/2) if f(x)=-3x^3 + 2x^2. Enter fractions using “/“ f(1/2)=

lutik1710 [3]

Exact form: 1/8
decimal form: 0.125

4 0

3 years ago

Response Question

Paha777 [63]

Answer:

The right solution is "3.29, 3.57".

Step-by-step explanation:

Seems that the given problem is incomplete. Below is the attachment of the complete and appropriate query.

The given values are:

Randomly selected adults,

$n = 105$

Mean,

$\bar{x} = 3.42$

Standard deviation,

$s = 0.75$

Now,

At 95% confidence level if given by,

= $\bar{x} \ \pm \ Z_{\frac{\alpha}{2} }\times \frac{s}{\sqrt{n} }$

On putting the given values, we get

= $3.42 \ \pm \ Z_{\frac{0.05}{2} }\times \frac{0.75}{\sqrt{105} }$

= $3.42 \ \pm \ 1.96\times 0.073$

= $3.42 \ \pm \ 0.143$

= $3.29, 3.57$

3 0

3 years ago

What is the approximate value of log b to the nearest hundredth? 0.93 1.23 9.16 65.53

Sergeu [11.5K]

Answer:

1.23

Step-by-step explanation:

6 0

3 years ago

Pete has 3 dollars less than what Linda has. If together has 81 dollars how much does each person have?

Makovka662 [10]

Answer:

Pete: 39, Linda: 42

Step-by-step explanation:

Suppose Pete has x dollars. If he has 3 dollars less than Linda, then Linda has 3+x dollars. Together, they have 81 dollars:

x+3+x=81

2x+3=81

2x=78

x=39

Since Pete has x dollars, and x=39, he has $39.

Linda has 3+x, which is 39+3 = $42

I hope this helps! :)

8 0

3 years ago

Express this in scientific notation 90,000

SSSSS [86.1K]

9 times 10 to the 4th power

8 0

3 years ago