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mihalych1998 [28]
3 years ago
13

3 x + 5 = 17 need help !!!!!!

Mathematics
2 answers:
myrzilka [38]3 years ago
6 0

Answer:

7.3333 or 22/3

Step-by-step explanation:

Dmitriy789 [7]3 years ago
5 0
The answer is 3x+5=7
Is x=4
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Write the equation of the line that passes through the points (0,2) and (-1,-1):
slava [35]

Answer:

m = (2 - (-1)) / (0 - (-1)) = 3/1 = 3

y = 3 * (x - 0) + 2

y = 3 * x + 2

6 0
3 years ago
Simplify x+2x –8+3x+1 –2x.
emmainna [20.7K]

Answer:

4x - 7

Step-by-step explanation:

x + 2x + 3x - 2x = 4x

-8 + 1 = -7

8 0
2 years ago
Hi, im new i need help
jasenka [17]

Answer:

what do u need help with! :)

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the y-intercept of the line perpendicular to the line...
Dominik [7]

Answer:

D) 5

Step-by-step explanation:

Perpendicular lines have opposite reciprocal slopes.

The line: y=\frac{3}{4} x+3 has a slope of \frac{3}{4} as it is  in y=mx+b form, where m is the slope, and b is the y-intercept.

Since the slope is \frac{3}{4}, we see that the negative reciprocal slope is -\frac{4}{3}, as \frac{4}{3} is the reciprocal (flip the numerator and denominator).

From here, we can use point slope form: y - y1 = m(x- x1), where (y1, x1) is  the point. In this case, (3, 1) is the point.

Thus, we have: y-1 =-\frac{4}{3}(x-3) as our final equation.

Simplifying: y-1 = -\frac{4}{3}x+4

And: y=-\frac{4}{3}x+5, which gives us the y-intercept to be 5.

Let me know if this helps!

4 0
2 years ago
A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic ca
Ugo [173]

Answer: A. 664

Step-by-step explanation:

Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.

But there is no information regarding the population proportion is mentioned.

Formula to find the samples size , if the prior estimate to the population proportion is unknown :

n=0.25(\dfrac{z*}{E})^2

, where E = Margin of error.

z* = Two -tailed critical z-value

We know that critical value for 99% confidence interval = z*=2.576  [By z-table]

Margin of error = 0.05

Then, the minimum sample size would become :

n=0.25(\dfrac{2.576}{0.05})^2

Simplify,

n=0.25\times2654.3104=663.5776\approx664

Thus, the required sample size= 664

Hence, the correct answer is A. 664.

5 0
3 years ago
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