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2 years ago

Find all solutions to the equation.

Mathematics

1 answer:

zhenek [66]2 years ago

5 0

Answer:

x=2

x=-1

Step-by-step explanation:

Refer to attachment.

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(4,?) Y=-3/4x+3 find the other half of the coordinate

Natasha_Volkova [10]

Plug 4 for x and solve.

y = -3/4 * 4 + 3

y = -12/4 + 3

y = -3 + 3

y = 0

So the missing coordinate is 0.

8 0

3 years ago

Silicon wafers are scored and then broken into the many small microchips that will he mounted into circuits. Two breaking method

antoniya [11.8K]

Answer:

The estimate is $- 0.0265\le K \le 0.0465$

Method B this is because the faulty breaks are less

Step-by-step explanation:

The number of microchips broken in method A is $n_1 = 400$

The number of faulty breaks of method A is $X_1 = 32$

The number of microchips broken in method B is $n_2 = 400$

The number of faulty breaks of method A is $X_2 = 32$

The proportion of the faulty breaks to the total breaks in method A is

$p_1 = \frac{32}{400}$

$p_1 = 0.08$

The proportion of the faulty to the total breaks in method B is

$p_2 = \frac{28}{400}$

$p_2 = 0.07$

For this estimation the standard error is

$SE = \sqrt{ \frac{p_1 (1 - p_1)}{n_1} + \frac{p_2 (1- p_2 )}{n_2} } }$

substituting values

$SE = \sqrt{ \frac{0.08 (1 - 0.08)}{400} + \frac{0.07 (1- 0.07 )}{400} } }$

$SE = 0.0186$

The z-values of confidence coefficient of 0.95 from the z-table is

$z_{0.95} = 1.96$

The difference between proportions of improperly broken microchips for the two breaking methods is mathematically represented as

$K = [p_1 - p_2 ] \pm z_{0.95} * SE$

substituting values

$K = [0.08 - 0.07 ] \pm 1.96 *0.0186$

$K = - 0.0265 \ or \ K = 0.0465$

The interval of the difference between proportions of improperly broken microchips for the two breaking methods is

$- 0.0265\le K \le 0.0465$

3 0

2 years ago

Toes……………… ;P ……………..

SOVA2 [1]

same.

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8 0

2 years ago

Read 2 more answers

How should this problem be solved?<br> (a^3)^2

fiasKO [112]

(a^3)^2
= a^(3*2)
= a^6
or
a^3 * a^3
= a^(3+3)
= a^6

7 0

2 years ago

Evaluate <br> -2/5-4/5+(-9/10)

Sphinxa [80]

ANSWER-

- 21/10 or -2.1

4 0

3 years ago