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tatuchka [14]
3 years ago
14

(-3.5x + 1.7) + (9.1x - 0.3)=

Mathematics
1 answer:
yuradex [85]3 years ago
7 0

Answer:

5.6x+1.4

Step-by-step explanation:

(-3.5x+1.7)+(9.1x-0.3)=-3.5x+9.1x+1.7-0.3=5.6x+1.4

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5. which ordered pair is a solution pf the equation y = -5x + 4
Liono4ka [1.6K]

1. Replace x with the given values and see if the equation equals the Y value:

y = -5x +4  

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The answer is D.


2. -4 = g+1

Subtract 1 from each side:

-5 =g

The answer is C.


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6 0
3 years ago
Evaluate the expression 8 + 6 − (8 ÷ 4) x 2 using PEMDAS.<br><br> 21<br> 17<br> 14<br> 10
Andreyy89
10. 8 divided by 4 is 2 times 2 is 4 8 plus 6 minus 4 is 10
8 0
3 years ago
Read 2 more answers
the local hardware store wants to increase their inventory. Last year 15 electric screwdrivers cost them 300.how much would 45 s
Harman [31]
One way of doing this is to write the equation of ratios (15 screwdrivers / 45 screwdrivers) = ($300 / x).    Solve this equation for x.  To do this, you might try multiplying both sides of this equation by x to eliminate fractions.

Another way is to obtain the unit cost of each screwdriver and then multiply the result by 45 screwdrivers.
7 0
3 years ago
A 500-page book contains 250 sheets of paper. The thickness of the paper used to manufacture the book has mean 0.08 mm and stand
LenaWriter [7]

Answer:

10.20% probability that a randomly chosen book is more than 20.2 mm thick

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

250 sheets, each sheet has mean 0.08 mm and standard deviation 0.01 mm.

So for the book.

\mu = 250*0.08 = 20, \sigma = \sqrt{250}*0.01 = 0.158

What is the probability that a randomly chosen book is more than 20.2 mm thick (not including the covers)

This is 1 subtracted by the pvalue of Z when X = 20.2. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{20.2 - 20}{0.158}

Z = 1.27

Z = 1.27 has a pvalue of 0.8980

1 - 0.8980 = 0.1020

10.20% probability that a randomly chosen book is more than 20.2 mm thick

7 0
3 years ago
After Julie went to sleep, the temperature rose 6 degrees before falling twice as far as it had risen. The next morning, the tem
ahrayia [7]

Answer:

26 I think

Step-by-step explanation:

i don't really know but I think it's 26

8 0
3 years ago
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