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Alexandra [31]
3 years ago
12

PLS HELP TELL WHETHER X AND Y SHOW DIRECT VARIATION!!!

Mathematics
1 answer:
jarptica [38.1K]3 years ago
4 0

Answer:

Try using this calculator

Step-by-step explanation:

https://www.mathpapa.com/algebra-calculator.html

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An electrical engineer wishes to compare the mean lifetimes of two types of transistors in an application involving high-tempera
Olin [163]

Answer:

(115.2642, 222.7358).

Step-by-step explanation:

Given data:

type A: n_1=60, xbar_1=1827, s_1=168

type B: n_2=180, xbar_2=1658, s_2=225

n_1 = sample size 1, n_2= sample size 2

xbar_1, xbar_2 are mean life of sample 1 and 2 respectively. Similarly, s_1 and s_2 are standard deviation of 1,2.

a=0.05, |Z(0.025)|=1.96 (from the  standard normal table)

So 95% CI is

(xbar_1 -xbar_2) ± Z×√[s1^2/n1 + s2^2/n2]

=(1827-1658) ± 1.96×sqrt(168^2/60 + 225^2/180)

= (115.2642, 222.7358).

8 0
3 years ago
2 thousands divided by what number is equal to 2 hundreds?
laila [671]

Answer:

10

Step-by-step explanation:

it is 10 2000÷10=200

8 0
3 years ago
Express the following numbers in standard form. [A] 509.78 [B] 0.0289 Can someone please help me ? I need to answer that questio
STALIN [3.7K]

Answer:

(A) 509.78

We need to move the decimal point after the first non-zero digit

So,

=> 5.0978 × 10² (Since the decimal point is moved two places to the left)

(B) 0.0289

Again after the first non-zero digit:

So, it becomes:

=> 2.89 × 10⁻² (Since the decimal point is moved 2 places to the right so it will be negative also)

8 0
3 years ago
Read 2 more answers
Estimate 7 x 522 ...
kolbaska11 [484]
Here we will tell you what 7 percent of 522 (7% of 522) is and then show you how we calculated it. The answer to "What is 7 percent of 522?" is:

36.54
8 0
3 years ago
Read 2 more answers
sue has a monthly budget of 4300 after she gets done paying bills she usually has about 3% of the money left for random items ho
LuckyWell [14K]
You have to take 3% of 4300 which is $129.
6 0
3 years ago
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