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NNADVOKAT [17]
3 years ago
10

Six hundred pictures are taken at a photo shoot. Twelve percent of the pictures are black and white. Which equation can be used

to find the number of black and white photos?
600 / 6 100 12 x 6 72 600 / 12 50 600 + 12 612
--------- = ----- or --------- = ----- or ----------- = ------ or ------------- = -------
12 / 6 2 100 x 6 600 600/100 6 100 + 12 112

I picked the second one but I wanna check my answer I have my test tmr
Mathematics
1 answer:
Rainbow [258]3 years ago
7 0

Answer:

the answer is the first and why did you delete my answer

Step-by-step explanation:

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Which system of equations can be used to find the roots of the equation 4x^2=x^3+2x?
irina [24]
Next time, please share the answer choices.
Starting from scratch, it's possible to find the roots:

<span>4x^2=x^3+2x should be rearranged in descending order by powers of x:

x^3 - 4x^2 + 2x = 0.  Factoring out x:  </span>x(x^2 - 4x + 2) = 0

Clearly, one root is 0.  We must now find the roots of (x^2 - 4x + 2):

Here we could learn a lot by graphing.  The graph of y = x^2 - 4x + 2 never touches the x-axis, which tells us that (x^2 - 4x + 2) = 0 has no real roots other than x=0.  You could also apply the quadratic formula here; if you do, you'll find that the discriminant is negative, meaning that you have two complex, unequal roots.
5 0
2 years ago
Read 2 more answers
Evaluate the expression when b=5 and x = -7.<br> -b+7x
svlad2 [7]

Answer:

-54

Step-by-step explanation:

Substitute the numbers for the variables.

-(5)+7(-7)

=-5-49

=-54

6 0
2 years ago
Read 2 more answers
PLEASE PLEASE PLEASE HELP I NEED THIS BY 8:00pm!
Likurg_2 [28]

Answer:

1. $85

2. $90.10

3.$108.12

4.$54.06

Step-by-step explanation:

100-15=85 (15% of 100 is 15)

6 percent of 85 is 5.10. So 85 + 5.10=90.10

20 percent of 90.10 is 18.02. So add that to the total. 90.10+18.02=108.12

Now divide by 2 to get how much they each will pay 108.12/2 = 54.06

6 0
2 years ago
1. Solve for x.
kati45 [8]
This is the answer for the first one

7 0
2 years ago
Read 2 more answers
I need help with math the question is
velikii [3]

Answer:

P=2(S-lw)/h

Step-by-step explanation:

we have that

The formula for the surface area of the enclosed space is

S=lw+0.5Ph

Solve for P

That means ------> isolate the variable P

Subtract lw both sides

S-lw=lw+0.5Ph-lw

S-lw=0.5Ph

Multiply by 2 both sides

2(S-lw)=(2)0.5Ph

2(S-lw)=Ph

Divide by h both sides

2(S-lw)/h=Ph/h

2(S-lw)/h=P

Rewrite

P=2(S-lw)/h

7 0
2 years ago
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