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Artist 52 [7]
3 years ago
5

PLS HELP THIS IS A TIMED TEST, THANK YOU

Mathematics
1 answer:
laiz [17]3 years ago
4 0

6 weeks.

The equation for each is:

68 + 5x

25 + 12x

To show work I reccomend making a table:).

I also reccomend usijg a graphic calculator if it is available.

If not then plug in numbers into the variables by using estimates.

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How do I factorise <br> 28x-4
IgorLugansk [536]
Step 1. Check if both terms of your expression have a common factor.
Notice that both 28x and 4 are divisible by 4, so the common factor of your expression is 4.

Step 2. Take out the common factor by dividing each one of the terms by the common factor and grouping the results inside a parenthesis:
\frac{28x}{4}=7x and \frac{4}{4} =1
28x-4=4(7x-1)

We can conclude that the factored form of 28x-4 is 4(7x-1).

7 0
3 years ago
Which is the rationalized form of the expression sqrtx/sqrtx+sqrt7
ArbitrLikvidat [17]

Answer:

(x - √7*√x) / (x - 7)

Step-by-step explanation:

I suppose your expression is √x / (√x + √7)

(√x * (√x - √7)) / ((√x + √7) * √x - √7)) = (√x * √x - √7 * √x) / (x - 7)

= (x - √7*√x) / (x - 7)

5 0
3 years ago
An investigative bureau uses a laboratory method to match the lead in a bullet found at a crime scene with unexpended lead cartr
Firlakuza [10]

Answer:

Step-by-step explanation:

Given that, we have 1851 bullets that we KNOW are NOT MATCHES of one another. One by one they examine two bullets at a time.

So, there are 1851 bullets but each time we choose 2.

We have, N choose K = N! / K! (N-k)!

Here, N = 1851 and K = 2

Therefore, 1851 choose 2 = 1851! / 2! (1851-2)!

                                         = 1851! / 2! * 1849!

                                         = 1712175 Possible Combinations

Out of these 653 are false positive.

The chance of getting false positive is = 658 / 1712175

                                                            = 0.000384

                                                           = 0.0384 %

Therefore, The correct option is

The chance of false positive is 0.0384% Because this probability is sufficiently small (< or = 1%) There is high confidence in the agency's forensic evidence.

3 0
3 years ago
Solve for x: −2x + 5 &lt; 7
Neko [114]

Inequality Form = X > -1

Interval Notation = (-1,∞)

3 0
3 years ago
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Someone help me with this PLEASE FOR ALG 2 exponential functions
ra1l [238]

Answer:

a) exponential decay

b) $1000

c)not sure

Step-by-step explanation:

a) depreciates means disapprovel so its going down

b) 20000×0.05=1000

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