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Irina18 [472]
3 years ago
14

A piece of string is 325 centimeters long. You need a string to be 1 1/4 meters long. How many centimeters should you cut off?

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
3 0
Convert both measurements to cm.

325 cm stays as is, but 1 1/4 meter = 1.25 meter * [ 100 cm / 1 m ], or 125 cm.  Cut off 125 cm.
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Factor (z-5)(z+4)=52​
Ipatiy [6.2K]

Good Afternoon! Here is your answer step by step!

Let's solve your equation step-by-step.

(z−5)(z+4)=52

Step 1: Simplify both sides of the equation.

z2−z−20=52

Step 2: Subtract 52 from both sides.

z2−z−20−52=52−52

z2−z−72=0

Step 3: Factor left side of equation.

(z+8)(z−9)=0

Step 4: Set factors equal to 0.

z+8=0 or z−9=0

z=−8 or z=9

Answer:

z=−8 or z=9

Have a blessed day! ❤

4 0
3 years ago
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kolezko [41]

Answer:

Can you be a bit more specific?

Step-by-step explanation:

I need to know a bit more to help

8 0
3 years ago
F(x) = x2 + 3x<br> g(x) = 2x – 5<br><br> Find f (x) + g(x)
AVprozaik [17]

Answer:

Step-by-step explanation:

3 0
3 years ago
Please help!! i need help asap &lt;33
7nadin3 [17]

Answer:

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Step-by-step explanation:

5 0
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Read 2 more answers
Suppose commute times in a large city are normally distributed and that 63.70% of commuters in this city take more than 22 minut
USPshnik [31]

Answer:

The mean is 24.205

Step-by-step explanation:

Firstly, we need to get the z-score

From the question, the probability we have is the probability that commuters take more than 22 minutes to commute one-way

So the probability we had was;

P( x > 22)

So we need the z-score corresponding to 63.70% or simply 0.637

We can use the standard normal distribution table to get this

Mathematically, from the standard normal distribution table this is -0.35

z-score = (x- mean)/SD

-0.35 = (22-mean)/6.3

22-mean = -2.205

mean = 22 + 2.205 = 24.205

6 0
3 years ago
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