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QveST [7]
2 years ago
9

21b-32+7b-20b=? Tell fast pls

Mathematics
2 answers:
OLEGan [10]2 years ago
6 0

Hello!

21b-32+7b-20b=

21b +7b -20b -32

= 28b -20b - 32

= 8b -32

madam [21]2 years ago
3 0

21b-32+7b-20b=

21b + 7b - 20b - 32

       8b            - 32

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An 8% sales tax is applied to a $300 purchase in Texas. What is the total price with tax
natta225 [31]

Answer:

324

Step-by-step explanation:

<u>Step 1:  Find the sales tax </u>

Equation → 300 * 0.08 = x

300 * 0.08 = x

24 = x

<u>Step 2:  Find the total </u>

Purchase + Sales Tax

300 + 24

324

Answer: 324

8 0
3 years ago
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What type of counting problem is this? How many different sequences of 3 playing cards (from a single 52-card deck) exist?
n200080 [17]

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Permutation without repetition

Step-by-step explanation:

The order of the cards matter, which makes it a permutation, but since none of the cards are exactly the same, repetition isn't allowed/possible

7 0
3 years ago
Find the arc length of the semicircle. Either enter an exact answer in terms of π or use 3.14 for π and enter your answer as a d
PSYCHO15rus [73]

Answer:

Step-by-step explanation:

The formula for the length of an arc is s = rФ.

Thus, the arc length of a semicircle is S = rФ/2.

Here the radius is 5 (half the diameter), and so in this case the arc length is

S = (5 units)π/2, or S = (5/2)(3.14) units, or approximately S = 7.85 units

6 0
3 years ago
A social psychologist conducts an experiment and finds a statistically significant result. This means that the a. experiment is
coldgirl [10]

Considering that the hypothesis test found an statistically significant result, it is found that the correct option is:

c. probability of obtaining this finding by chance alone is less than some quantity.

<h3>What is an hypothesis test?</h3>
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Hence, according to these bullet points, option C is correct.

You can learn more about hypothesis tests at brainly.com/question/16313918

7 0
3 years ago
Please help and explain.
Alexandra [31]

Answer:

-1/3

Step-by-step explanation:

Use the formula, (y2 - y1)/(x2 - x1).  In this case, there is a negative slope.  

Start from point, (1, 9) and go to point (4, 8).  

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Y2 = 8

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X1 = 1

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Therefore, the slope is -1/3

6 0
3 years ago
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