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Rudik [331]
3 years ago
11

In 1945​, an organization asked 1490 randomly sampled American​ citizens, "Do you think we can develop a way to protect ourselve

s from atomic bombs in case others tried to use them against​ us?" with 770 responding yes. Did a majority of the citizens feel the country could develop a way to protect itself from atomic bombs in 1945​? Use the alpha equals 0.05 level of significance.
Mathematics
1 answer:
Schach [20]3 years ago
6 0

Answer:

1490/2= 745=50%  770>745 so  your answer is yes

Step-by-step explanation:

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Find the area of a semicircle with a radius of 6 centimeters.
nlexa [21]

Answer:

Answer:

Measure of ∠y is 90°

Step-by-step explanation:

We see that,

∠x and ∠y are vertical angles and ∠x, 40°, 50° are in a straight line.

Since, we know, Sum of angles in straight line is 180°.

Then, ∠x + 40° + 50° = 180°

i.e. ∠x = 180° - 90°

i.e. ∠x = 90°

Also, we know, 'Vertical angles have equal measures'.

So, ∠y = ∠x = 90°

Hence, measure of ∠y is 90°

Read more on Brainly.com - brainly.com/question/9695253#readmore

Step-by-step explanation:

6 0
3 years ago
What is the range of the function f(x)=1/2sqrt of x ?
Makovka662 [10]

Answer:

All real numbers greater than or equal to 0.

Step-by-step explanation:

x must be greater or equal to zero because there is no real square root of a negative number.

So the lowest value of the function is 0 and  it can be any value greater than that.

8 0
4 years ago
Find two numbers with a sum of 20 and a difference of 14
sergey [27]

Find two numbers with a sum of 20 and a difference of 14


Make two equations

X+Y=20

X-Y=14


Now add x since y cancels out and add 20+14 To end up with

2x=34


Now divide 2 both sides to get x alone

2x/2=34/2


X=17


Now substitute x answer to first equation and solve for y

17+y=20


Subtract 17 both sides

Y= 3

Your two numbers are

3 and 17

4 0
3 years ago
Can some one help pelar
7nadin3 [17]
The answer will be: x=-2
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3 years ago
A rectangular prism has a volume of 729 ft3. The length width and height are all the same. What is the is the length of each sid
swat32

Answer:

9 ft

Step-by-step explanation:

As length, width and height are same, then it is a square prism / cube

Volume of prism = 729 ft³

side³ = 729

side³ = 9³

Side = 9 ft

3 0
3 years ago
Read 2 more answers
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