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Arada [10]
2 years ago
13

How many solutions does the equation 3x − 7 = 4 + 6 + 4x have?

Mathematics
2 answers:
Valentin [98]2 years ago
5 0

Answer:

it is two

Step-by-step explanation:

because it is two

Anit [1.1K]2 years ago
4 0

Answer: one solution (d)

Step-by-step explanation:

The equation equals -17, which is one solution, I just did the unit last month.

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Slove 4x - c = k for x
san4es73 [151]

Answer:

x=\frac{k+c}{4}

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
What is the slope of a line that passes through the points (4,3) and (-7,1)?
Andreyy89

Answer:

-2/3

Step-by-step explanation:

If you use the formula y2-y1/x2-x1 your answer will be -2/3

5 0
2 years ago
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Social media is popular around the world. Statista provides estimate of the number of social media users in various countries in
amm1812

Answer:

Kindly check explanation

Step-by-step explanation:

The data table :

Use of SM _UK _China _ Russia _US _ col total

Yes ______480 __215 ___343 __640 _ 1678

No _______320 _ 285 ___357__ 360 _ 1322

Row Total__ 800 _500 __ 700_ 1000_ 3000

H0 : p1 = p2 = p3 = p4

H1 : p1 ≠ p2 ≠ p3 ≠ p4

Test statistic :

χ² = Σ(observed - Expected)² / Expected

Expected value of each cell = (Row total * column total) / N

N = grand total

Expected Values:

447.467 _279.667 _ 391.533 _ 559.333

352.533 _ 220.333 _ 308.467 _ 440.667

χ²=(2.36536+14.9527+6.01605+11.6337+3.00232 18.9793+7.63611+14.7665) = 79.352

Degree of freedom, df = (row-1)*(column-1) = (2 - 1) * (4 - 1) = 1 * 3 = 3

Using the Pvalue from Chisquare calculator :

Pvalue(79.352, 3) = 0.00000000001

Decision region :

Reject H0 ; If Pvalue < α

α = 0.05

Since 0.000000001 < 0.05 ; Reject H0 and conclude that not all population proportion are equal.

Sample proportion :

Phat = number of yes, x / total

For UK, Phat = 480/800 = 0.6

For China , Phat = 215/500 = 0.43

For Russia , Phat = 343/700 = 0.49

For US, Phat = 640/1000 = 0.64

7 0
3 years ago
Can’t figure this out!
ale4655 [162]

Answer:

what does it say because i cant see

St ep-by-step explanation:

5 0
3 years ago
Can anyone answer this problem in their head. No calculator or paper.
rodikova [14]
7,393,420,225 is the answer tk the problem without using calculator.
7 0
3 years ago
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