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3 years ago

Please guysss help me with this question!!!!!

Mathematics

1 answer:

Masja [62]3 years ago

3 0

Its D) amplitude=2 and midline y=2

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-3z-z I need help pleeeaaassseee

Eddi Din [679]

3z^2 cus the z are the same I’m not able to remember what’s it called so sorry

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3 years ago

Please hurry ASAP One ride on a city bus costs $1.50. Martina has $18 on her bus pass. Write and solve an equation to find how m

bogdanovich [222]

Answer:

She can ride the bus 12 times before she needs to load more money on her pass.

Step-by-step explanation

1. You would take 18 and divide it by 1.5 (1.50) to get 12.

6 0

2 years ago

Read 2 more answers

A quality control engineer is interested in estimating the proportion of defective items coming off a production line. In a samp

fenix001 [56]

Answer:

The lower bound of a 99% C.I for the proportion of defectives = 0.422

Step-by-step explanation:

From the given information:

The point estimate = sample proportion $\hat p$

$\hat p = \dfrac{x}{n}$

$\hat p = \dfrac{55}{100}$

$\hat p$ = 0.55

At Confidence interval of 99%, the level of significance = 1 - 0.99

= 0.01

$Z_{\alpha/2} =Z_{0.01/2} \\ \\ = Z_{0.005} = 2.576$

Then the margin of error $E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1-\hat p)}{n}}$

$E = 2.576 \times \sqrt{\dfrac{0.55(1-0.55)}{100}}$

$E = 2.576 \times \sqrt{\dfrac{0.2475}{100}}$

$E = 2.576 \times0.04975$

E = 0.128156

E ≅ 0.128

At 99% C.I for the population proportion p is: $\hat p - E$

= 0.55 - 0.128

= 0.422

Thus, the lower bound of a 99% C.I for the proportion of defectives = 0.422

6 0

3 years ago

Help me answer dis .

iren [92.7K]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Guys pls help solve for x

madam [21]

Answer:

x=2

Step-by-step explanation:

x+(2x)^2=18

6 0

3 years ago