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nirvana33 [79]
2 years ago
7

What equation is equivalent to 1/3 (9x+12) + 4x + 6

Mathematics
2 answers:
marysya [2.9K]2 years ago
5 0
B. 7x+10 would be the correct answer
Irina-Kira [14]2 years ago
3 0
The answer is b, 7x+10
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Ms. Howard wrote a test. Part A had true/false questions, each worth points. Part B had multiple choice questions, each worth po
harina [27]

Full question attached

Answer and explanation:

Since x = number of true or false questions correct

And y = number of multiple choice questions correct

And each question for x =2 points

each question for y=3 points

since she then needs a total score of more than 93 to pass, we add up total correct questions and

Inequality equation = 2x +3y >93

5 0
3 years ago
If you have a set of alternate exterior angles on parallel lines, then the measure will be equal
Luba_88 [7]
Always.
So it is B.
Hope This Helps
5 0
2 years ago
When solving this equation: -16 + x = -15 we start with adding 16 to both sides. Why do we use addition?​
Ierofanga [76]

Answer:

So you can cancel out the 16. See, the -16 is negative, and if we add +16 to it, then it cancels out and is 0. That way, you have x=1.

Step-by-step explanation:

-16x+x=-15

+16x      +16

   0+x=1

       x=1

6 0
3 years ago
The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 250.8 and a standard deviation of
Iteru [2.4K]

Answer:

a) 68%; b) 99.5%

Step-by-step explanation:

The empirical rule states that 68% of data falls within 1 standard deviation of the mean; 95% of data falls within 2 standard deviations of the mean; and 99.7% of data falls within 3 standard deviations of the mean.

For part a,

We are asked the approximate percentage of women whose platelet counts are within 1 standard deviation of the mean.  According to the empirical rule, this is 68%.

For part b,

We are given the endpoints of the interval.  The lower endpoint is 181.5; this is 250.8-181.5 = 138.6 away from the mean.  Dividing by the standard deviation, 69.3, we have

138.6/69.3 = 2

This is 2 standard deviations away from the mean.

The higher endpoint is 320.1; this is 320.1-181.5 = 138.6 away from the mean.  Dividing by the standard deviation, 69.3, we have

138.6/69.3 = 2

This is standard deviations away from the mean.

This means this interval includes about 95% of women.

4 0
3 years ago
kayla spent 1/6 of her money on clothes. She had $250 remaining. What was the cost of the clothes Kayla bought?
d1i1m1o1n [39]

Answer

$50

Step-by-step explanation:

6 0
2 years ago
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