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3 years ago

Pls help me I’ve been asking this question for so long now nobody will answer

Mathematics

2 answers:

kogti [31]3 years ago

7 0

Answer:

what the other guy said you can make him brainliest now

Step-by-step explanation:

forsale [732]3 years ago

5 0

Answer: A

The y-intercept is 43, which means that at 0 hours it was 43 degrees. The slope is -2 so it means that the temperature is decreasing at a rate of 2 degrees per hour.

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Rearrange to make x the subject

Zolol [24]

Answer
t3/b=x
Step by step explanation
t = bx/3
Take b/3 to the left hand side
= x = 3t/b
Hope it helped !!
Comment below

7 0

2 years ago

Read 2 more answers

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

3 years ago

PLEASE HELP NOW THIS IS DUE REALLY SOON ILL MAKE YOU BRAINLIEST IF YOU CAN ANSWER NOW

Lynna [10]

Angles 6 and 7, because they are alternate along the transversal.

Also angles 1 and 4.

6 0

2 years ago

Please help me! Thank you! (x^2 + 2x -3)(4x^2 - 5x + 6)

gavmur [86]

Combine the like terms.
4x^4+3x^3-16x^2+27x-18

5 0

3 years ago

3t-2+t=4-7t solve for t

zvonat [6]

3t-2+t=4-7t
4t-2=4-7t
-6=-11t
6/11=t

7 0

3 years ago