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3 years ago

What is the measure of Z?

Mathematics

1 answer:

ycow [4]3 years ago

7 0

Answer:

It is C

Step-by-step explanation:

142+28=180

180÷2=90

m∠v=90

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Find the indefinite integral. (use c for the constant of integration.) sin xcos5 x dx

Alik [6]

:) Well, I dunno about anyone else but this question makes my head spin!

6 0

3 years ago

How dose 3^x=10 and x^3=10 differ

slega [8]

3^x is raising 3 to an unknown number or variable, while x^3 is raising a variable to 3 (x*x*x)

8 0

2 years ago

It took Mrs. Harpole 35 minutes to grade

stepladder [879]

Answer:

700 minutes or 11.67 hours

Step-by-step explanation:

35/4=8.75

8.75*80=700

8 0

3 years ago

To save money, a local charity organization wants to target its mailing requests for donations to individuals who are most suppo

mars1129 [50]

Answer:

The 80% confidence interval for difference between two means is (0.85, 1.55).

Step-by-step explanation:

The (1 - α) % confidence interval for difference between two means is:

$CI=(\bar x_{1}-\bar x_{2})\pm t_{\alpha/2,(n_{1}+n_{2}-2)}\times SE_{\bar x_{1}-\bar x_{2}}$

Given:

$\bar x_{1}=M_{1}=6.1\\\bar x_{2}=M_{2}=4.9\\SE_{\bar x_{1}-\bar x_{2}}=0.25$

Confidence level = 80%

$t_{\alpha/2, (n_{1}+n_{2}-2)}=t_{0.20/2, (5+5-2)}=t_{0.10,8}=1.397$

*Use a t-table for the critical value.

Compute the 80% confidence interval for difference between two means as follows:

$CI=(6.1-4.9)\pm 1.397\times 0.25\\=1.2\pm 0.34925\\=(0.85075, 1.54925)\\\approx(0.85, 1.55)$

Thus, the 80% confidence interval for difference between two means is (0.85, 1.55).

3 0

2 years ago

Round the number to the place indicated. Round to the nearest tenth: 1.4511

Evgen [1.6K]

1.500 since 45 rounds to 50

8 0

3 years ago