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pishuonlain [190]
3 years ago
13

I need some homework help please.

Mathematics
2 answers:
vlada-n [284]3 years ago
5 0
I think the person on top got you with the answer
Sonja [21]3 years ago
4 0

Answer:

x^2-5x=6

x^2-5x-6=0

x^2+x-6x-6=0

x(x+1)-6(x+1)=0

(x-6)(x+1)=0

x=6, -1

-5x= -30, 5

Step-by-step explanation:

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A shirt was originally priced at $30. The store is having a 5% off sale. How much will you pay for the shirt after the discount
pishuonlain [190]

Answer:

$28.50

Step-by-step explanation:

multiply 30 by 5 then divide by 100 and subtract the answer by 30

30×5=150

150÷100=1.5

30-1.5=28.50

8 0
4 years ago
Last night. Harry hero saved the lives of 12 people. If Harry hero does that every night for a year 365 days how many people wil
amid [387]
Harry’s hero will save a total of 4,380 lives
7 0
3 years ago
Which number is a solution for the inequality below?
nasty-shy [4]

Answer:

D 90

Step-by-step explanation:

x/4 ≥ 20

Multiply each side by 4

4*x/4 ≥ 20*4

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The only number greater than or equal to 80 is 90

7 0
3 years ago
Read 2 more answers
pH measurements of a chemical solutions have mean 6.8 with standard deviation 0.02. Assuming all pH measurements of this solutio
aalyn [17]

Answer: 2.14 %

Step-by-step explanation:

Given : pH measurements of a chemical solutions have

Mean :  \mu=6.8

Standard deviation : \sigma=0.02

Let X be the pH reading of a randomly selected customer chemical solution.

We assume  pH measurements of this solution have a nearly symmetric/bell-curve distribution (i.e. normal distribution).

The z-score for the normal distribution is given by :-

z=\dfrac{x-\mu}{\sigma}

For x = 6.74

z=\dfrac{6.74-6.8}{0.02}=-3

For x = 6.76

z=\dfrac{6.76-6.8}{0.02}=-2

The p-value =P(6.74

P(z

In percent, 0.0214\times=2.14\%

Hence, the percent of pH measurements reading below 6.74 OR above 6.76 = 2.14%

6 0
4 years ago
Can someone help me with this ?
telo118 [61]
(w³+7)/w=(9w²+7)/9
(w³+7)9=(9w²+7)x
9w³+63=9w³+7x
63=7x
x=9
7 0
4 years ago
Read 2 more answers
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