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dedylja [7]
3 years ago
11

Simply by using order of operations 4+(9•2)+(4-1)-4

Mathematics
2 answers:
Lynna [10]3 years ago
8 0

Answer:

21

Step-by-step explanation:

pav-90 [236]3 years ago
8 0

Answer:

21

Step-by-step explanation:

4+(9•2)+(4-1)-4

PEMDAS says parentheses first

4+(18)+(3)-4

Then add and subtract from left to right

22 +3-4

25 -4

21

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Find the value of x in (4x -5) = 7(x -5)​
Vlad1618 [11]

Answer: x = 10

Step-by-step explanation:

( 4 x − 5 ) = 7 ( x − 5 )

Simplify  7 ( x − 5 ) .

4 x − 5 = 7 x − 35

Move all terms containing  x  to the left side of the equation.

− 3 x − 5 = − 35

Move all terms not containing  x  to the right side of the equation.  

− 3 x = − 30

Divide each term by   − 3  and simplify.

x = 10

6 0
3 years ago
The proportion of items in a population that possess a specific attribute is known to be 0.45. a. If a simple random sample of s
yanalaym [24]

Answer: 0.05

Step-by-step explanation:

  • Sampling error is the error occurs by considering sample for study instead of entire population.

Given : The proportion of items in a population that possess a specific attribute is known to be 0.45.

Sample size : n= 100

Sample proportion of items in a population that possess a specific attribute : \hat{p}=0.48

Now, the formula to find the sampling error :

\text{Sampling error} =\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

\text{Sampling error} =\sqrt{\dfrac{0.48(1-0.48)}{100}}

=\sqrt{\dfrac{0.48(0.52)}{100}}\\\\=\sqrt{0.002496}\approx0.05

Hence, the sampling​ error =0.05

4 0
3 years ago
What’s the value of x in this equation???? Thank u!
andre [41]

Answer:

x = 9

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

50° is an exterior angle of the triangle, thus

38 + 4x - 24 = 50 , that is

14 + 4x = 50 ( subtract 14 from both sides )

4x = 36 ( divide both sides by 4 )

x = 9

7 0
3 years ago
Read 2 more answers
Jillian wants to find the surface area of a pyramid. the base is a square with sides that are 4 inches long the other faces are
Natali5045456 [20]
Part a:-
The base of each triangle is 4 inches long. 
Their  height is 3/2 * 4 = 6 inches.

b 
The combined  area of the triangular faces = 4 * 1/2 * 4 * 6 =  48 sq ins

c
Surface area of the pyramid =  48 + area of base = 48 + 16  = 64 sq ins.
7 0
3 years ago
Gerard concluded that the triangle with sides StartRoot 95 EndRoot feet, 8 feet, and StartRoot 150 EndRoot cannot be used as a b
Pachacha [2.7K]

Answer:

Check explanations for answer

Step-by-step explanation:

Here, we want to find out how Gerard came to the conclusion

For him to arrive at this conclusion, then we should consider the lengths given if they form a right triangle and are suitable for the building frame

From the lengths that we have

If we square the longest length, then the sum of the squares of the two other lengths should be the same as it is

This is in obedience to Pythagoras’ theorem

However, this does not hold

√(150)^2 is not equal to 8^2 + (√(95))^2)

and so since this does not work, then the triangle is not right-angled and cannot be use as the frame

3 0
3 years ago
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