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3 years ago

× + 2 + 2x + 3 = 4x PLS HELP ME

Mathematics

2 answers:

natka813 [3]3 years ago

7 0

Answer: 8

Step-by-step explanation:

Sophie [7]3 years ago

5 0

Answer:

I dont know what your supposed to do but i can tell you that x = 5 because if you simplify the equation you get 3x + 5 = 4x. Using this you can infer that a single x is equivalent to 5 since you need 5 to get from 3x to 4x.

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4 years ago

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3 years ago

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4 years ago

Read 2 more answers

It is suspected that calcium in blood platelets may be related to blood pressure. As part of a study of this relationship, resea

mr Goodwill [35]

Answer:

Step-by-step explanation:

The null and the alternative hypothesis are:

$\mathbf{ H_o: \rho = 0} \\ \\ \mathbf{H_1: \rho \ne 0}$

The test statistics is as follows:

$t = \dfrac{r\sqrt{n-2} }{\sqrt{1-r^2}}$

$t = \dfrac{0.4 \sqrt{30-2} }{\sqrt{1-0.4^2}}$

$t = \dfrac{0.4 \sqrt{28} }{\sqrt{0.84}}$

t = 2.3094

The critical value

$t_{\alpha/df} = t_\ \{0.05/2 \ , \ 30-2 \} } \\ \\ = t_{0.025,28} = \pm 2.048 ( from \ the \ t-tables)$

Decision rule:

To reject $H_o$ if t > $t_{\alpha/df}$ .

So since t > $t_{\alpha/df}$ . we reject $H_o$ at ∝ = 0.05

Conclusion: There is sufficient evidence to conclude that blood pressure and patient calcium are linearly related.

3 0

4 years ago

What is the value of x?

Viktor [21]

Answer:

x=6/5 or 1.2

Step-by-step explanation:

2.5x=x+3

2.5x-x= 3

2.5x= 3

divide both by 2.5

x= 6/5 or 1.2

8 0

3 years ago

× + 2 + 2x + 3 = 4x PLS HELP ME ​

× + 2 + 2x + 3 = 4x PLS HELP ME