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konstantin123 [22]
3 years ago
9

a bird flies 25 miles Due West then turns due south and flies for another 15 miles and lands how far is the bird from its starti

ng point

Mathematics
1 answer:
Crazy boy [7]3 years ago
4 0
Check the picture below.

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Help no links please u^u
Veseljchak [2.6K]

Answer:

∠A= 80°

Step-by-step explanation:

if they are supplementary then put them equal to 180

7x + 3 +7x + 23 = 180

14x + 26 = 180

14x = 154

x= 11

now plug in

7(11)+3

77+3= 80

3 0
3 years ago
A number w added to 2.3 is more than 18
DanielleElmas [232]
2.3 + w > 18
-2.3 -2.3
w > 15.7
7 0
2 years ago
A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly as
mina [271]

Answer:

Step-by-step explanation:

Given that a dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly assigns nold = 8 to get the old diet, and nnew = 5 to get the new diet including the additive.

From the data given we get the following

           N       Mean      StDev     SE Mean

Sample   1    8           43       5.1824 1.832

Sample   2   5           73     21.0832 9.429

df = 11

Std dev for difference = 13.3689

a) Yes the two are independent.  The two sets of cows randomly chosen are definitely independent. Paired means equal number should be there and homogeneous conditions should be maintained.

b) Enclosed

c) Comparison of two means is the test recommended here.  Because independent samples are used.\

d) Test statistic= -3.1233

(because of unequal variances we use that method)

95% confidence interval =  ( -56.6676 , -3.3324 )

p value <0.05 our alpha

So reject null hypothesis.

The two means are statistically significantly different.

3 0
3 years ago
A football team lost 5 yards on each of 3 plays. Explain how you could use a number line to find the team's change in field posi
taurus [48]

Answer:

Step-by-step explanation:

5- 10- 15-

3 0
3 years ago
What is 60,978 in expanded form
lana66690 [7]

Expanded Notation Form: 60,978= 60,000 +0 +900 +70 +8 

Expanded Factors Form:  60,978= 6 × 10,000 +0 × 1,000 +9 × 100 +7 × 10 +8 × 1 

Expanded Exponential Form: 60,978 = 6 × 104+0 × 103+9 × 102+7 × 101+8 × 100

Word Form:60,978 =sixty thousand nine hundred seventy-eight

7 0
2 years ago
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