All categories

3 years ago

HELP simple question

Mathematics

2 answers:

lawyer [7]3 years ago

5 0

Answer:

I think it’s step 2 where she distributed the exponents incorrectly but she got it right so since no explanation is really needed then I guess it’s step 2.

step 1 where she divided 5 on both sides. Step 3 is also correct since the answer is 0. so step 2 had the mistake.

Butoxors [25]3 years ago

5 0

I’m gonna guess step 1 (x+7)^2=49 because the math doesn’t make sense on that

You might be interested in

In studies examining the effect of humor on interpersonal attractions, McGee and Shevlin (2009) found that an individual’s sense

son4ous [18]

Answer:

The calculated value t = 2.038< 2.145 at 0.05 level of significance

Null hypothesis is accepted

There is the average rate is less than μ ≤ 4

Step-by-step explanation:

Step(i):-

The Population of the mean 'μ' =4

sample size 'n' = 16

sample mean 'x⁻' = 4.53

given sample standard deviation 's' = 1.04

level of significance α = 0.05

Step(ii):-

Null hypothesis:H₀ : There is no significance difference between two means

Alternative hypothesis : H₁: There is significance difference between two means

Test statistic

$t = \frac{x^{-} - mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{4.53-4}{\frac{1.04}{\sqrt{16} } }$

t = 2.038

Degrees of freedom ν = n-1 = 16-1 =15

t₀.₀₂₅ = 2.145

Conclusion:-

The calculated value t = 2.038< 2.145 at 0.05 level of significance

Null hypothesis is accepted

There is the average rate is less than μ ≤ 4

6 0

3 years ago

REALLY EASY POINTS - What are the values of a positive attitude?

faltersainse [42]

Answer:

3 values of postivity is Optimistim, Kindness, and an open mind/Growth mind set.

Step-by-step explanation:

8 0

2 years ago

Llus

mafiozo [28]

Answer:

x ≈ 80.4

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan15° = $\frac{opposite}{adjacent}$ = $\frac{x}{300}$ ( multiply both sides by 300 )

300 × tan15° = x , then

x ≈ 80.4 ( to the nearest tenth )

7 0

3 years ago

112 is 80% of what number?

Ganezh [65]

112 is 80% of 140.
80% can be written as 0.80 or 0.8.
how i got 140 is by finding the x value of this equation: 0.8x=112
to find the x, i divided 0.8 from both sides,
0.8 divided by 0.8 cancel out.
112 divided by 0.8 is 140.
therefore, 112 is 80% of 140

4 0

3 years ago

URGENT: Click on the graph to choose the correct answer to the equation. x > 2

Elan Coil [88]

The graph of the inequality, x > 2 is the graph attached below.

<h3>How to Find the Graph of Inequality?</h3>

Given the inequality as, x > 2, it means all possible values of x must be greater than 2.

Thus, the graph that will show all possible values of x that would be greater than 2 would be a vertical line indicating the values are over 2 and upwards.

Therefore, the graph that represents x > 2 is shown in the image attached below.

Learn more about the graph of inequality on:

brainly.com/question/11234618

#SPJ1

4 0

2 years ago