All categories

3 years ago

Can someone please help me with this?

Mathematics

2 answers:

Art [367]3 years ago

8 0

Answer:

1. $0.34

2. .8

Step-by-step explanation:

harkovskaia [24]3 years ago

7 0

Answer: 1. .38

2. $8

Step-by-step explanation:

You might be interested in

From least to greatest 42%,0.43,17/40

Tasya [4]

The answer is this

42%, 17/40, 0.43

5 0

3 years ago

What is the reciprocal of 5/6

mestny [16]

Answer:

-6/5

Hope this helps!

5 0

3 years ago

Read 2 more answers

a store sold a case of scented candles for$17.85 that had been marked up 110%. what was the original price

densk [106]

If 10% was added to the total (100%), then subtract 10% from 17.85.

17.85 * 0.1 = 1.785
17.85 - 1.785 = 16.065
$16.07

6 0

3 years ago

A new surgery is successful 70% of the time , if the results of 8 such surgeries are randomly sampled, what is the probability t

il63 [147K]

Answer:

P (x>5) = 0.5324014=0.523

Step-by-step explanation:

Here success = p= 0.7 and failure = q= 1-p= 1-0.7 = 0.3

Number of surgeries= n= 8

Applying the binomial distribution

( p+q) ^n= nC x p^x . q^n-x

More than 5 means 6,7, and 8

( p+q) ^8= 8C 5 (0.7)^5 . (0.3)^3

=56* 0.16807*0.027

= 0.254121

( p+q) ^8= 8C 6 (0.7)^6 . (0.3)^2

= 28* 0.1177* 0.09

= 0.296604

( p+q) ^8= 8C 7 (0.7)^7 . (0.3)^1

= 8* 0.0824* 0.3

= 0.19776

( p+q) ^8= 8C8 (0.7)^8 . (0.3)^0

= 1* 0.05765* 1

=0.05765

Adding the above all probabilities gives

P (x>5) = P (x=6) + P(x=7) + P(x=8)

= 0.296604+0.19776+0.05765

= 0.5324014

7 0

3 years ago

Describe the zero product property and explain how tu use it to solve (2x + 10) (x - 7) = 0

Korolek [52]

Answer:

See below

Step-by-step explanation:

Basically, when you have a product to two factors set equal to 0, you can use the Zero Product Property and make two separate equations, both set equal to 0, to find the roots for each factor:

$2x+10=0\\2x=-10\\x=-5$

$x-7=0\\x=7$

Notice that by plugging these roots back into the equation, either factor will be 0, making the whole expression 0:

$(2x+10)(x-7)=0\\(2(7)+10)(7-7)=0\\(24)(0)=0\\0=0$

$(2x+10)(x-7)=0\\(2(-5)+10)(-5-7)=0\\(0)(-12)=0\\0=0$

8 0

2 years ago