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taurus [48]
3 years ago
12

+ 8a + 15 = 0" alt=" {a }^{2} + 8a + 15 = 0" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
NISA [10]3 years ago
8 0

Answer:

a = - 5, a = - 3

Step-by-step explanation:

Given

a² + 8a + 15 = 0 ← in standard form

(a + 3)(a + 5) = 0 ← in factored form

Equate each factor to zero and solve for a

a + 3 = 0 ⇒ a = - 3

a + 5 = 0 ⇒ a = - 5

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Use the original price and the markdown to find the retail price. Original price: $100; Markdown: 28%. What is retail price ?​
Rasek [7]

Answer:

$72 is the retail price

Step-by-step explanation:

100 x (100-28)/100

4 0
3 years ago
Write the number 0.632 in the other forms
shusha [124]

.600 + .030 + .002 is another form for that number - this is standard form : )
6 0
3 years ago
Assume that the average healthy body temperature is 98.249 degrees and the standard deviation is 0.733 degrees. How many standar
Leno4ka [110]

The standard deviation is 1.43 below the mean

<h3>How to determine the number of standard deviation?</h3>

The given parameters are:

Mean = 98.249

Standard deviation = 0.733

x = 97.2

To calculate the number of standard deviation below the mean, we use

x = \bar x - n\sigma

So, we have:

97.2 = 98.249 - n * 0.7333

Evaluate the like terms

-1.049  =- n * 0.7333

Divide both sides by -0.733

n =1.43

Hence, the standard deviation is 1.43 below the mean

Read more about standard deviation at:

brainly.com/question/15858152

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5 0
2 years ago
How many distinguishable a arrangements are there of the letters in "REPRESENTATION"?
Anika [276]

Answer: There are 1,816,214,400 ways for arrangements.

Step-by-step explanation:

Since we have given that

"REPRESENTATION"

Here, number of letters = 14

There are 2 R's, 3 E's, 2 T's, 2 N's

So, number of permutations would be

\dfrac{14!}{2!\times 3!\times 2!\times 2!}\\\\=1,816,214,400

Hence, there are 1,816,214,400 ways for arrangements.

5 0
4 years ago
4) Solve the following system of equations by graphing. If the system is inconsistent or the
juin [17]
The equations are dependent (they're the same equation).

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7 0
3 years ago
Read 2 more answers
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