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4 years ago

Here goes another question lol oops

Mathematics

2 answers:

ahrayia [7]4 years ago

6 0

1. -(5r - 3s + 1)
simplify....
-5r + 3s - 1

2. -5r + 3s + 1

3. -5r + 3s - 1

student 1 and student 3 have the equivalent equations.
Your answer is A. Student 1 and Student 3.

Murrr4er [49]4 years ago

3 0

Student 1 and 3.
$- (5r - 3s + 1) = - 5r + 3s - 1$
Move the negative into the brackets,
positive becomes negative while two negatives make a positive.

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What two numbers add to 10 and multiply to 28

Setler79 [48]

There is no two numbers that can add to 10 and multiply to 28, the highest number you can get by multiplying numbers that add to equal 10 are 5 and 5, and that only reaches 25. I'm sorry

4 0

3 years ago

what are the vertex and x -intercepts of the graph of y=(x-4)(x+2)? Select one answer for the vertex and one for the x-intercept

kkurt [141]

Answer:

B&E

Step-by-step explanation:

Realized that I didn't actually "answer it" hahaha! Using a online calculator is always helpful in finding answers like these.

5 0

3 years ago

A circle with a radius of 3cm sits inside a 8cm*7cm rectangle. What is the area of the shaded region? Round your final answer to

Elanso [62]

Answer:

27.73 cm squared

Step-by-step explanation:

In order to find the shaded region, we need to find the areas of the circle and the rectangle and then subtract the circle area from the rectangle area.

The area of a rectangle is denoted by: A = lw, where l is the length and w is the width. Here, the length is l = 7 and the width is w = 8. Plug these in:

A = lw

A = 7 * 8 = 56 cm squared

The area of a circle is denoted by: A = πr², where r is the radius. Here, the radius is r = 3, so plug this in:

A = πr²

A = π * 3² = 9π ≈ 28.27 cm squared

Now subtract 28.27 from 56:

56 - 28.27 = 27.73

The answer is thus 27.73 cm squared.

7 0

3 years ago

Read 2 more answers

12-7(8*9)<br> 82<br>5-82<br>-77<br><img src="https://tex.z-dn.net/?f=12%20-%207%288x9%29%20%3D%20" id="TexFormula1" title="12 -

Goryan [66]

Well, that's incorrect because according to the Order of Operation [GEMS\BOMDAS\PEMDAS etc.], that -7 has to be distributed amongst all the other terms in parentheses. Besides, you did the wrong operation when you inserted that subtraction symbol in substitution of the parentheses, which means to MULTIPLY. So, the order goes as follows:

12 - 7[72]

-504 + 12 = -492 [OR 12 - 504]

-492 is your answer. You get it now?

3 0

3 years ago

A real estate developer is considering investing in a shopping mall on the outskirts of Atlanta, Georgia. Three parcels of land

Arada [10]

Answer:

Step 1: The null and alternative hypothesis for the one way analysis of variance is,

H₀ : There is no difference in the means of each area.

H₁ : At least one mean is different.

The objective of this question is to test whether the income of the three areas are significantly different.

Step 2: The problem states to use 0.05 significance level.

Step 3: The test statistic follows the F-distribution.

Step 4: Decision rule is based on the critical value.

Numerator degrees of freedom is,

K - 1 = 3 - 1

= 2

Denominator degrees of freedom is 2.

n - k = 12 - 3

= 9

Using the F-distribution table for ∝=0.05 with numerator and denominator degrees freedom, the critical value is 4.26. The decision rule is to reject H₀ if the computed value of F exceeds 4.26.

Step 5: Calculations.

Using Excel follow the steps mentioned below.

1. Import or type the data into spreadsheet.

2. Data--------> Data Analysis----------> Anova: Single Factor, click OK.

3. Select Input Range, make a tick mark on Labels in the first row, enter 0.05 for alfa.

4. Click OK.

The obtained output for the one-way ANOVA is,

[ find the figure in attachment]

From the obtained output, the computed test statistic value, F = 14.18 , which is greater than the critical value of 4.26. So, reject H₀

Step 6: Interpretation. The average income of each area is different. It can be concluded that the average income is significantly different .

4 0

3 years ago