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2 years ago

6

The sweater shack is offering a 20% discount on sweaters. IF the regular price of a sweater is $15.00 what is the discount? What

is the sale price

1 answer:

andriy [413]2 years ago

4 0

Discount 15 times .20= $3 discount

Sale price = $12. 15-3=12

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Which of the given values is a solution to the equation −11=5t−9

padilas [110]

-11+9= 5t
-2=5t (divide both sides by 5)
t= -2/5

(Mark me the brainliest if this has helped )

6 0

2 years ago

Read 2 more answers

AYUDAAAAAAAAAAAA Un numero es 40% mas que el otro número, si la suma de 2 números es 84 busca los 2 números.

lions [1.4K]

Answer:

Si el número es x, entonces 1.4x + x = 84,

Entonces 2.4x = 84 yx = 84 / 2.4 = 840/24 = 35.

El otro número es 84-35 = 49

Step-by-step explanation:

Espero que te ayudo

Dejame saber : )

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2 years ago

If p(x)=x^2+x+1 and q(x)=3x^2-1, find p(7)

Delvig [45]

Answer:

p(7) = 57

Step-by-step explanation:

Because this is a function, all you have to do is input 7 for x like so:

p(x)=x^2+x+1 ---------------> p(7)=7^2+7+1

so 49 + 8

= 57

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2 years ago

What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = x2 − 4x + 5, and what does it mean about the num

Aleksandr-060686 [28]

So discriminant gives us 3 possibilites connected with result of the equation b^2-4ac. If it is bigger than zero, there are 2 solutions, if answer is exactly 0, then there is one answer and if the number is lower than 0, there are no solutions.

Discriminant of your quadratic equation is (-4)^2-4*1*5=16-20=-4, so there are no solutions.

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2 years ago

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A laptop company claims up to 11.0 hours of wireless web usage for its newest laptop battery life. However, reviews on this lapt

emmainna [20.7K]

Answer:

Step-by-step explanation:

given that a laptop company claims up to 11.0 hours of wireless web usage for its newest laptop battery life. However, reviews on this laptop shows many complaints about low battery life. A survey on battery life reported by customers shows that it follows a normal distribution with mean 10.5 hours and standard deviation 27 minutes.

convert into same units into hours.

X is N(10.5, 0.45)

a) the probability that the battery life is at least 11.0 hours

$P(X\geq 11)\\\\=1-0.8667\\=0.1333$

(b) the probability that the battery life is less than 10.0 hours

= $P(X$

(c) the time of use that is exceeded with probability 0.97

=97th percentile

= 11.844

d) The time of use that is exceeded with probability 0.9 is

is 90th percentile = 10.885

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3 years ago