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2 years ago

Which angles are acute? Check the photo down below

Mathematics

2 answers:

WARRIOR [948]2 years ago

6 0

DBA

Step-by-step explanation:

all the other ones are right angles or obtuse

grigory [225]2 years ago

5 0

Answer: A and D

Step-by-step explanation: I need 4 more brainliest answers t get the next rank I’d appreciate it

You might be interested in

Consider the function f(x)=x3+6x2−20x+450.

Damm [24]

Answer:

Therefore reminder = 2802

Step-by-step explanation:

f(x)=x³+6x²-20x+450

x-12)x³+6x²-20x+450(x²+18x+196

x³-12x²

____________________

+18x²-20x+450

18x²-216x

_______________

196x +450

196x-2352

_____________

2802

Therefore reminder = 2802

6 0

2 years ago

NarStor, a computer disk drive manufacturer, claims that the median time until failure for their hard drives is more than 14,400

Ne4ueva [31]

Answer:

The test statistics is $t = -1.727$

Step-by-step explanation:

From the question we are told that

The data given is

330 620 1870 2410 4620 6396 7822 81028309 12882 14419 16092 18384 20916 23812 25814

The population mean is $\mu = 14400$

The sample size is n = 16

The null hypothesis is $\mu \le 14400$

The alternative hypothesis is $H_a : \mu > 14400$

The sample mean is mathematically evaluated as

$\= x = \frac{\sum x_i}{n}$

$\= x = \frac{330+ 620+ 1870 +2410+ 4620+ 6396+ 7822+ 8102+8309+ 12882+ 14419+ 16092+ 18384 +20916+ 23812+ 25814 }{16}$

=> $\= x = 10799.9$

The standard deviation is mathematically represented as

$\sigma =\sqrt{\frac{ \sum (x_i - \=x)^2}{n}}$

$\sigma =\sqrt{\frac{(330- 10799.9)^2 + (620- 10799.9)^2+ (1870- 10799.9)^2 +(2410- 10799.9)^2 + (4620- 10799.9)^2 +(6396- 10799.9)^2 +(7822- 10799.9)^2 }{16}} \ ..$

$..\sqrt{ \frac{(8102 - 10799.9)^2 +(8309 - 10799.9)^2 + (12882 - 10799.9)^2 + (14419 - 10799.9)^2 + (16092 - 10799.9)^2 + (18384 - 10799.9)^2 +(20916 - 10799.9)^2 }{16}} \ ...$

$\ ... \sqrt{\frac{(23812 - 10799.9)^2 +(25814 - 10799.9)^2 }{16}}$

=> $\sigma = 8340$

Generally the test statistic is mathematically represented as

$t = \frac{10799.9- 14400}{ \frac{8340}{\sqrt{16} } }$

$t = -1.727$

From the z-table the p-value is

$p-value = P(Z > t) = P(Z > -1.727) = 0.95792$

From the values obtained we see that

$p-value > \alpha$ so we fail to reject the null hypothesis

Which implies that the claim of the NarStor is wrong

5 0

3 years ago

If I have the full price of an item, & the discounted price of the same item, how do I find the discount percentage?

melamori03 [73]

Answer:

Subtract the discount price from the full price. Divide the amount of change by the original price.

Step-by-step explanation:

Example: Original price = $40 Sale price = $30

$40-$30= 10

10/40= 1/4

1/4 = .25 or 25%

5 0

2 years ago

Would an experience downhill skier want the slope of the hill to be 1/10 or 9/10? Why?<br><br>

kolezko [41]

Answer:

9/10

Step-by-step explanation:

step 1

Compare the slopes

$1/10=0.10$

$9/10=0.9$

$0.9 > 0.10$

therefore

An experienced skier would like the 9/10 hill slope because it is steeper, while the 1/10 is a softer slope.

8 0

3 years ago

Can Someone Explain??

ValentinkaMS [17]

A) Dependent Variable = Sue's Earning
Independent Variable = Number of hours she work

Y = 6x

B) When, x = 1, y = 6(1) = 6,
when x = 2, y = 6(2) = 12
when x = 3, y = 6(3) = 18

Ordered pairs would be: (1, 6), (2, 12), (3, 18)

C) Equation would be: Y = 6x
Where, y = Earning
x = number of hours

Hope this helps!

3 0

3 years ago