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3 years ago

How do i factor s^2+9s=-20

1 answer:

8 0

To factor you have to do this:

s^2 + 9s = -20
+ 20 +20

s^2 + 9s + 20 = 0

now you need to numbers that multiplied give you 20
and then those same 2 numbers have to add to 9

5 x 4 = 20
5+ 4 = 9

(x + 4) (x+ 5)

that means that x= -4, and -5

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How to find cp if loss and sp are given

velikii [3]

Step-by-step explanation:

$\tt{ \: H \: E \: Y \: \: T \: H \: E \: R\: E \: }$ !

When Loss and Selling price ( SP ) are given , Cost price ( CP ) can be found out using the following formulae :

✰ $\large{ \boxed{ \boxed{ \tt{CP = Loss + SP}}}}$

$\text{How \: did\: we \:get \:the \: formula : \: CP \: = Loss \: + \: SP} \:$ ?

We simply derived the formula from Loss = CP - SP.

First , Swap the sides of the equation :

⟶ $\text{CP - SP = Loss}$

Move SP to right hand side and change it's sign :

⟶ $\text{CP = Loss + SP}$

This is how , CP can be obtained when we are given loss and SP.

Hope I helped ! ♡

Have a wonderful day / night ! ツ

# $\underbrace{ \tt{C \: a \: r \: r \: y \: \: O \:n \: \: L \: e \: a \: r \: n \: i \: n \: g}}$ !!

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8 0

2 years ago

I'm having trouble finding the answer.

Zinaida [17]

Your answer is 3(x+8) I believe

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3 years ago

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An arboretum has a daffodil garden containing 17 different types of daffodils in an area of 345 square feet. The horticulture di

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Answer:

Step-by-step explanation:

There are 1,400 daffodils in the flower garden covering an area of 345 square feet. So, the area covered by 1 daffodil, the unit rate, is found as shown below.

Now, use the unit rate to determine the area required to have 250 more daffodils as shown below.

Therefore, the area required to add 250 daffodils is approximately 61.6 square feet.

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2 years ago

How many acute angles are in an acute triangle? a.3 b.2 c.1 d.0

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Answer: a.) 3

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2 years ago

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Assume that the engine component of a spacecraft consists of two engines in parallel. If the main engine is 95% reliable, the ba

rodikova [14]

Answer:

a) 0.04

b) 0.19

c) 0.01

d) 0.8

Step-by-step explanation:

Hi,

Let's make our data, considering two rules of probability:

The total probability of any event is 1.
Percentages are converted to decimal.

P(M) = 0.95
P(M')=0.05
P(B)=0.80
P(B')=0.20

- where M → Main Engine works, B → Back Up Engine works, M' → Main Engine will not work and B' → Back Up Engine will not work.

Remember for cases with and, we multiply; for cases with or, we use addition.

a) For this part, we know that Main Engine will work and Back-up engine will not work:

P(M' and B): 0.05 x 0.80 = 0.04

b) Back up will not work and Main will work:

P(M and B') = 0.20 x 0.95 = 0.19

c) We know the probability of entire component working, which is 0.99.

So to find the probability of entire component failing, we need to subtract 0.99 from 1. (Since the total probability is always 1)

P(Entire component will fail) = 1 - 0.99 = 0.01

d) This is a typical case of conditional probability, to calculate a conditional probability we use the following formula: $P(A|B) = \frac{P(A\ and\ B)}{P(B)}$