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Kobotan [32]
1 year ago
8

What's the answer to 2.4(-3.3-0.9+1.2)

Mathematics
1 answer:
Annette [7]1 year ago
7 0

-7.2

Explanation:

2.4(-3.3 -0.9 +1.2)

expanding the parenthesis:

2.4(-3.3) -2.4(0.9) + 2.4(1.2)

Simplify:

-7.92 - 2.16 + 2.88

-10.08 + 2.88

= -7.2

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The perimeter of a rectangular flower garden is 66m and its area is 272m^2. Find the length of the garden.
ExtremeBDS [4]
So we have lengths a and b and are given:

2a+2b = 66 => a+b = 33 => a= 33-b
a*b = 272

plug in one into the other:

(33-b)b = 272 => -b^2 +33b - 272 = 0

Can be factored as (b-16)(b-17) = 0, if you don't "see" this immediately, use the well known abc formula to find b.

So a=16 and b=17 or vice versa.


6 0
2 years ago
Which statement about the zeros of the graphed function is true?
Anton [14]

Answer:

A. The function has three distinct real zeros.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Helppppp<br> Find the value of x.<br> A. 176<br> B. 128<br> C. 256<br> D. 74
RSB [31]

Answer: Choice B) 128

Explanation:

We'll add up the given arc measures and then cut the result in half to get the angle formed by the intersecting chords (that subtend the arcs in question).

chord angle = (arc1+arc2)/2

x = (54+202)/2

x = 256/2

x = 128

7 0
2 years ago
Read 2 more answers
Here is a circle touching a square.
Alex Ar [27]

Answer: 9πcm²

Step-by-step explanation: area of the square= 36cm²

Therefore, the area of one side= √area = √36 = 6cms

Since the circle is touching the sides of the square, the side of the square = the diameter of the circle

Therefore the radius of the circle= side/2 = 3cm

The formula for the ares of the circle is πr²

π*3*3 = 9πcm²

8 0
3 years ago
How many zeros does the function f(x) = 3x12 − 17x8 + 11x4 − 6x + 23 have?
dem82 [27]
How many zeros does the function f(x) = 3x12 − 17x8 + 11x4 − 6x + 23 have? 

Answer: the third option (12 zeros..). 

Use ^ to denote an exponent.. 

f(x) = 3x^12 - 17x^8 + 11x^4 - 6x + 23.. 


We know from that fact that the number of zeros (real or complex) in a polynomial is the same as the degree of the polynomial.. 

The degree is the greatest/highest power of the terms, which in this case is 12 (since 12 is the greatest exponent..).. 

The degree is 12, thus it means there are 12 zero's.. 


Answer: the third option (12 zero's )...
3 0
3 years ago
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