All categories

3 years ago

How do I do such thing?

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

5 0

Answer:

a= -5

Explanation:

Rewrite the equation to be: 3^a=3^-1 / 3^4

Multiply by adding exponents :))

which would then be 3^a = 3^-5

Then, since the bases are the same then the a would equal negative (-) 5. :))

Hope this helps :)) Plz mark brainlest :))

You might be interested in

-c - 8(4c - 5) - (-18c + 3) -15c+37 -c+40 -32c-3 18c+40

mina [271]

Answer:

i think it is -c+40

Step-by-step explanation:

i hope that this helps

6 0

4 years ago

What’s the slope intercept form of 2x+y=-2 and what’s the y intercept and x intercept

bezimeni [28]

The slope intercept form is y=2x-2 and the y intercept is -2 and the x intercept is 1

3 0

3 years ago

Read 2 more answers

Help brainly fast giving brainlist

Stels [109]

Answer: B and C

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Lydia told Al, "If you read the problem carefully, then the solution is not difficult."

Sonja [21]

To find the contrapositive of a conditional statement we first swap the hypothesis and conclusion, and then negate both. Doing so in this case gives us D.

6 0

3 years ago

The percentage of adults who currently play chess (at least once during the past year) is 12% in the UK. Suppose that in a rando

Likurg_2 [28]

Answer:

p represent the population parameter , true proportion of people who play chess in the UK

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

$z=\frac{0.1675 -0.12}{\sqrt{\frac{0.12(1-0.12)}{400}}}=2.923$

Step-by-step explanation:

Data given and notation

n=400 represent the random sample taken

X=67 represent the people who play chess

$\hat p=\frac{67}{400}=0.1675$ estimated proportion of people who play chess

$p_o=0.12$ is the value that we want to test

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

p represent the population parameter , true proportion of people who play chess in the UK

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the true proportion i higher than 0.13.:

Null hypothesis: $p \leq 0.12$

Alternative hypothesis: $p > 0.12$

When we conduct a proportion test we need to use the z statisitc, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

Calculate the statistic

Since we have all the info required we can replace in formula (1) like this:

$z=\frac{0.1675 -0.12}{\sqrt{\frac{0.12(1-0.12)}{400}}}=2.923$

7 0

3 years ago