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zheka24 [161]
3 years ago
7

Find the perimeter of the following shape:

Mathematics
1 answer:
Andreas93 [3]3 years ago
6 0

Answer:

31

Step-by-step explanation:

You might be interested in
Jane evaluates x squared minus 3 x + 5 for x = negative 2 below. Step 1: (negative 2) squared minus 3 (negative 2) + 5 Step 2: E
rjkz [21]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the question :

Jane evaluates x squared minus 3 x + 5 for x = negative 2 below. Step 1: (negative 2) squared minus 3 (negative 2) + 5 Step 2: Equals negative 4 + 6 + 5 Step 3: Equals 7 What, if any, was Jane's mistake?

Jane's evaluation :

x² - 3x + 5 for x = - 2

Step 1:

(-2)² - 3(-2) + 5

Step 2:

-4 + 6 + 5

Step 3 :

= 7

Jane's mistake was in STEP2,

evaluating (-2)² = 4 and not - 4

Hence, (-2)² - 3(-2) + 5

= 4 + 6 + 5

= 15

4 0
3 years ago
Select all of the following that are quadratic equations.
Lelechka [254]

Answer:

3x ^2 + 5x - 7 = 0

5x ^2+ 15x = 0

x ^2 - 4x = 4x + 7

Step-by-step explanation:

Just find a equation with a degree of 2 and boosh

6 0
3 years ago
The Sugar Sweet Company is going to transport its sugar to market. It will cost
Troyanec [42]

Im not going to graph it for you but the equation is

C=7250+250s

4 0
3 years ago
A study of 600 college students taking statistics 101 revealed that 54 students received the grade of
Anna007 [38]

A study of 600 college students taking statistics 101 revealed that 54 students received the grade of

a. Typically 10% of the class gets an A

b.  The difference between this group of students and the expected value is not significant at the 0.05 level. what does this mean in this case?


Your answer would mean that, =====>  The probability of getting an A is 10% and only 9% got an A, in this study.  The difference is less than 5% therefore, in this case, it is not significant.




Hope  that helps!!!!              : )


3 0
3 years ago
An arithmetic sequence has t1=5 and t2=8 find tn and sn
RoseWind [281]

Answer:

a_n=2+3n

\displaystyle S_n=\frac{7n+3n^2}{2}

Step-by-step explanation:

<u>Arithmetic Sequences </u>

The arithmetic sequences are identified because any term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.

The equation to calculate the nth term of an arithmetic sequence is:

a_n=a_1+(n-1)r

Where

an = nth term

a1 = first term

r   = common difference

n  = number of the term

The sum of the n terms of an arithmetic sequence is given by:

\displaystyle S_n=\frac{a_1+a_n}{2}\cdot n

We are given the first two terms of the sequence:

a1=5, a2=8. The common difference is:

r = 8 - 5 = 3

Thus the general term of the sequence is:

a_n=5+(n-1)3=5+3n-3=2+3n

\boxed{a_n=2+3n}

The formula for the sum is:

\displaystyle S_n=\frac{5+2+3n}{2}\cdot n

\displaystyle S_n=\frac{7+3n}{2}\cdot n

Operating:

\boxed{\displaystyle S_n=\frac{7n+3n^2}{2}}

4 0
3 years ago
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