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GrogVix [38]
3 years ago
6

Can someone help on these two questions

Mathematics
1 answer:
notsponge [240]3 years ago
3 0
(x-1)(x-1)
=x^2-x-x+1
=x^2-2x+1

(x+7)(x-7)
=x^2-7x+7x-49
=x^2-49
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$25 for a shirts $30 for a bag $40 get 10% ON WHAT YOU PURCHASE MARLIN BOUGHT 1 BAG 2 SHIRTS 2 PANTS
SSSSS [86.1K]

Answer: The question is incomplete.

Step-by-step explanation: I cannot give you the answer because i do not know the price of the pants.

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7 0
3 years ago
Factor y=2x^2+10x+12​
Reptile [31]

Answer:

y=2(x+2)(x+3)

Step-by-step explanation:

First, we need to factor the right side:

y=2(x^2+5x+6)

Now, we can have an incomplete equation like this:

y=2(x+_)(x+_)

In the blanks, we need to fill out numbers that add to be 5 and multiply to be 6. What are factors of 6? 6 and 1, 2 and 3. Do 6 and 1 add to be 5? No. Do 2 and 3 add to be 5? Yes!

So, our factored form is

y=2(x+2)(x+3)

6 0
3 years ago
Read 2 more answers
A new surgical procedure is said to be successful 60% of the time. Suppose the operation is performed five times and the results
USPshnik [31]

Answer:

0.07776, 0.3456,0.08704

Step-by-step explanation:

Given that a new surgical procedure is said to be successful 60% of the time

Let X be the no of successes

Then X has only two outcomes and each trial is independent of the other

Hence X is binomial with p = prob of success in a single trial = 0.60

n = Number of operations performed = 5

Prob that

a) all five operations are successful =

P(X=5)\\= (0.6)^5\\=0.07776

(b) exactly three are successful

=P(X=3) = 5C3 (0.6)^3(0.4)^2\\= 0.3456

(c) less than two are successful

==P(X

3 0
3 years ago
13 is 26 percent of what number
Nataliya [291]
We have an equation: 13/?= 26/100

Cross multiply:
26*?= 13*100
⇒ ?= 13*100/26= 50

13 is 26% of 50~
6 0
3 years ago
Read 2 more answers
A cone has a radius of 9 and a height of 22. What is the approximate volume of the cylinder? Round to the nearest tenth where ne
ryzh [129]

Answer

Answer: Volume = 9025.8 cm³

Step-by-step explanation:

--------------------------------------------------------

Find Radius :

--------------------------------------------------------

Base area = πr²

169π = πr²

r² = 169

r = √169

r = 13 cm

--------------------------------------------------------

Find height :

--------------------------------------------------------

Height = 13 + 4

Height = 17 cm

--------------------------------------------------------

Find Volume :

--------------------------------------------------------

Volume = πr²h

Volume = π(13)²(17)

Volume = 9025.8 cm³

--------------------------------------------------------

Answer: Volume = 9025.8 cm³

--------------------------------------------------------

8 0
3 years ago
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