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pashok25 [27]
4 years ago
5

Evaluate the numerical expression 2.5(−4.4 − 3.5)

Mathematics
1 answer:
Sophie [7]4 years ago
6 0
<span>2.5(−4.4 − 3.5)
=</span>−4.4 − 3.5=-7.9
=2.5(-7.9)
=-19.75

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Use the commutative and associative properties of multiplication to write an expression equivalent to (4⋅5)⋅3.
Darina [25.2K]
Commutaive property says
ab=ba or expanded to say
abc=cba

associative peropty =
a(bc)=(ab)c

so using that
first mix them up knowing that we can move the parenthaseese
all possible equivelnt ones are
4*(5*3)
(3*5)*4
3*(5*4)
(3*4)*5
3*(4*5)
 
4 0
3 years ago
Find the missing angle measure, arc measure or solve for x. Show all<br> work!
n200080 [17]

Answer:

mYW = 151°

Step-by-step explanation:

∠XWY is an inscribed angle because it has a vertex on the circle. This means that m∠XWY is half of the arc it intercepts, which is XY. We can model the situation using an equation:

m∠XWY = mXY / 2

37° = mXY / 2

mXY = 74°

All arcs in a circle add up to 360°. Because of this, we can say:

mXY + mYW + mWX = 360°

74° + mYW + 135° = 360°

209° + mYW = 360°

mYW = 151°

5 0
3 years ago
2x + 8<br> 2 + 3<br> 7x + 21<br> .<br> x +4
exis [7]

Answer:

60x    + 86

Step-by-step explanation:

7 0
3 years ago
What is the 33rd term of this arithmetic sequence?<br><br> 12, 7, 2, -3, -8, …
Debora [2.8K]

a1 = 12

common difference = -5

a(n) = a1 + d(n - 1)

a(n) = 12 - d(n-1)

so if 33rd term then

a(33) = 12 -5(32)

a(33) = 12 - 160

a(33) = -148

Answer

-148

6 0
3 years ago
The number of people employed as medical assistants in a country was 373 thousand in 2003. By the year 2013​, this number is exp
Troyanec [42]

a) The linear function is: y = 21.8x + 373

b) The estimate for the number of people employed in 2012 is of 569.2.

-----------------------------

A linear function has the following format:

y = mx + b

In which

  • m is the slope, that is, how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0.

-----------------------------

Item a:

  • During the first year of observation, the number of people, in thousands of dollars, was of 373. Thus, the y-intercept is b = 373
  • In 10 years, it changed from 373 to 591, thus, the slope is:

m = \frac{591 - 373}{10} = 21.8

The function is:

y = 21.8x + 373

-----------------------------

Item b:

2012 is 9 years after 2003, thus, this is y(9)

y(9) = 21.8(9) + 373 = 569.2

The estimate for the number of people employed in 2012 is of 569.2.

A similar problem is given at brainly.com/question/24742848

7 0
3 years ago
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