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2 years ago

I need help with this page

Mathematics

2 answers:

nexus9112 [7]2 years ago

5 0

Answer:

im not sure if it will help but there is an app called photomath and it has always helped me

Step-by-step explanation:

Ludmilka [50]2 years ago

3 0

Happy to help Mylie.

We use the basic idea that

$a^{-n}=\dfrac{1}{a^n}$

7³ 16⁻⁹ = 7³ / 16⁹

Let's number the choices left to right first row 1-4, second 5-8, last 9-12

Answer: Choice 12

8⁻⁶ / 21⁻⁴ = 21⁴ / 8⁶

When the negative exponent is in the denominator it becomes a positive exponent in the numerator.

Answer: Choice 5

(7/16)⁻³ = (16/7)³ = 16³/7³

Answer: Choice 3

16³ (-7)⁻³ = 16³ / (-7)³

We could simplify more but this is

Answer: Choice 7

((8)(21))⁻⁴ = 1 / ((8)(21))⁴

Answer: Choice 1

8(21⁻³) = 8/21³

Answer: Choice 10

11⁻⁷ 5⁹ / 6⁹ = 5⁹ / (11⁷ 6⁹)

Answer: Choice 11

I think I'll leave the last three for you.

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Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side. The area of the smalle

siniylev [52]

Answer:

20 by 20

Step-by-step explanation:

the new dimensions have to be 12 because 12×12 =144 so you would add 8 to 12 and get 20 for each side

7 0

2 years ago

Read 2 more answers

Marine ecologists estimate the reproduction curve for swordfish in a fishing ground to be f(p) = −0.01p2 + 9p, where p and f(p)

Nimfa-mama [501]

Answer:

The population that gives the maximum sustainable yield is 45000 swordfishes.

The maximum sustainable yield is 202500 swordfishes.

Step-by-step explanation:

Let be $f(p) = -0.01\cdot p^{2}+9\cdot p$ , the maximum sustainable yield can be found by using first and second derivatives of the given function: (First and Second Derivative Tests)

First Derivative Test

$f'(p) = -0.02\cdot p +9$

Let equalize the resulting expression to zero and solve afterwards:

$-0.02\cdot p + 9 = 0$

$p = 450$

Second Derivative Test

$f''(p) = -0.02$

This means that result on previous part leads to an absolute maximum.

The population that gives the maximum sustainable yield is 45000 swordfishes.

The maximum sustainable yield is:

$f(450) = -0.01\cdot (450)^{2}+9\cdot (450)$

$f(450) =2025$

The maximum sustainable yield is 202500 swordfishes.

6 0

2 years ago

Which expression represents "10 subtracted from the quotient of 3 and a number"? a. 3n-10 b. 3/n - 10 (the / is a fraction bar)

kiruha [24]

B. because it is 10 being subtracted from the fraction.

4 0

2 years ago

The Ignorance Survey: United Kingdom A survey was conducted in the United Kingdom, where respondents were asked if they had a un

lukranit [14]

Answer:

Here we have given two catogaries as degree holder and non degree holder.

So here we have to test the hypothesis that,

H0 : p1 = p2 Vs H1 : p1 not= p2

where p1 is population proportion of degree holder.

p2 is population proportion of non degree holder.

Assume alpha = level of significance = 5% = 0.05

The test is two tailed.

Here test statistic follows standard normal distribution.

The test statistic is,

Z = (p1^ - p2^) / SE

where SE = sqrt[(p^*q^)/n1 + (p^*q^)/n2]

p1^ = x1/n1

p2^ = x2/n2

p^ = (x1+x2) / (n1+n2)

This we can done in TI_83 calculator.

steps :

STAT --> TESTS --> 6:2-PropZTest --> ENTER --> Input all the values --> select alternative "not= P2" --> ENTER --> Calculate --> ENTER

Test statistic Z = 1.60

P-value = 0.1090

P-value > alpha

Fail to reject H0 or accept H0 at 5% level of significance.

Conclusion : There is not sufficient evidence to say that the percent of correct answers is significantly different between degree holders and non-degree holders.

7 0

2 years ago

Clint is in study hall reading the hunger games after 20 minutes he is on page 151 after 45 minutes he's on page 181 how many pa

Mademuasel [1]

After 20 minutes Clint is on page = 151

After 45 minutes Clint is on page = 181

Time slot = $45-20=25$ minutes