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Alona [7]
3 years ago
12

-7x+14=4x-19 please help w/ answer

Mathematics
2 answers:
Vladimir79 [104]3 years ago
6 0
The correct answer is x=3. Hope this helps!!
dezoksy [38]3 years ago
4 0

14+19 = 7x + 4 x

33 = 11x

33/11 = 11x/11

x = 11

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Write the equation of a line that<br> goes through the point (-2, 3)<br> with a slope of 2.
bezimeni [28]

Answer:

y = 2x + 7

Step-by-step explanation:

y = mx + b  The point (-2,3) gives us an x value and a y value that we can use.  We are also give the slope (m).  All we need to do is figure out the b (y-intercept) value.

y = mx + b

3 = 2(-2) + b

3 = -4 + b  Add for to both sides

7 = b  We know have every thing that we need to write the equation.  We have the slope (m) which is 2 and the b (y-intercept) that we just figured out is 7

y = 2x + 7

4 0
1 year ago
Read 2 more answers
The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation 3 inches. What
Nutka1998 [239]

Answer:

The probability that an 18-year-old man selected at random is greater than 65 inches tall is 0.8413.

Step-by-step explanation:

We are given that the heights of 18-year-old men are approximately normally distributed with mean 68 inches and a standard deviation of 3 inches.

Let X = <u><em>heights of 18-year-old men.</em></u>

So, X ~ Normal(\mu=68,\sigma^{2} =3^{2})

The z-score probability distribution for the normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = mean height = 68 inches

           \sigma = standard deviation = 3 inches

Now, the probability that an 18-year-old man selected at random is greater than 65 inches tall is given by = P(X > 65 inches)

       P(X > 65 inches) = P( \frac{X-\mu}{\sigma} > \frac{65-68}{3} ) = P(Z > -1) = P(Z < 1)

                                                                = <u>0.8413</u>

The above probability is calculated by looking at the value of x = 1 in the z table which has an area of 0.8413.

6 0
3 years ago
The refrigerator part of a refrigerator freezer has a volume of 27 cubic feet. The freezer part is 2 feet high, 2 feet deep, and
VLD [36.1K]
The answer is 39.
do 2x2x3 (answer is 12) then 27+12.
3 0
3 years ago
Graph the line with slope 3 and y-intercept -8.
Rama09 [41]
There you go hope this helps

3 0
3 years ago
At school 161 students play at least one sport.This is 70% of the number of the student at the school. How many suenos are at th
kondor19780726 [428]
X=number total of student at the school.
70% of x=161
can suggest this equation:
(70/100)x=161
0.7x=161
x=161/0.7=230

Answer: the school has  230 students
7 0
3 years ago
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