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Nat2105 [25]
3 years ago
7

36 kg bag of cement was dropped losing one tenth of cement. How much was left in the bag of cement ?

Mathematics
2 answers:
kow [346]3 years ago
7 0

Answer:

32.4kg

Step-by-step explanation:

if it loses one tenth of cement;

36kg×1/10

36kg/10

3.6kg was lost

to find the remaining ; 36kg - 3.6kg = 32.4kg is left in the bag

Feliz [49]3 years ago
7 0

Answer:

32.4

Step-by-step explanation:

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Find a polynomial function of least degree having only real coefficients, a leading coefficient of 1, and roots of 2-√6 , 2+ √6
horsena [70]

Answer:

x^{4} -18x^{3}+104x^{2} -172x-100

Step-by-step explanation:

The 3 roots are given out of which 2 are real and 1 is imaginary. For a polynomial of least degree having real coefficients, it must have a complex conjugate root as the 4th root. Therefore, based on 4 roots, the least degree of polynomial will be 4. Finding the polynomial having leading coefficient=1 and solving it based on multiplication of 2 quadratic polynomials, we get:  

\\\\x_{1} = 2-\sqrt{6} \\x_{2} = 2+\sqrt{6} \\x_{3}=7-i \\x_{4}=7+i \\\\P(x)=1(x-x_{1})(x-x_{2} )(x-x_{3} )(x-x_{4} ) \\\\=(x-(2-\sqrt{6}))(  x-(2+\sqrt{6} )) (x-(7-i))( x-(7+i))\\=((x-2)+\sqrt{6})( ( x-2)-\sqrt{6} ) ((x-7)+i)( (x-7)-i)\\=((x-2)^{2} -(\sqrt{6} )^{2} )((x-7)^{2}-(i)^{2})\\=(x^{2} -4x-2)(x^{2} -14x+50)\\=x^{4} -18x^{3}+104x^{2} -172x-100\\

7 0
3 years ago
Please help i’m really confused (10 points)
choli [55]

Answer:

hope this helps

Step-by-step explanation:

The average absolute deviation about any certain point of a data set is the average of the absolute deviations or the positive difference of the given data and that certain value. It is a summary statistic of statistical dispersion or variability.

7 0
3 years ago
Bo bought a few items for $93.84, not including tax. If the tax rate was 7%, what was the total cost of these items, including t
notsponge [240]

Answer:

Total cost is $100.41 ( $93.84 + $6.57)

Step-by-step explanation:

Thinking Point: The total cost is the cost of the items PLUS the tax. 93.84 ∙ 0.07 = 6.5688 (round to “cents”) = $6.57


Hope this helped!

4 0
3 years ago
Read 2 more answers
PLEASE HELP,
valina [46]
What we know:

3.14 pi
radius: 7in.
Result units: in^3, this is the results of in used for radius; no conversion needed
Formula volume of a sphere: (4/3)* pi * r^3

(4/3)(3.14)(7)(7)(7)
(4/3)(3.14)(343)
(4/3)(1077.02)
(1.3)(1077.02) \\repeated 3 infinite
1436.026666\\repeated 6inf

The volume of the sphere is about 1436.0266 in^3
5 0
3 years ago
Determine if the two triangles are congruent. If they are, state how you know.
NNADVOKAT [17]

Answer:

(i think) they are congruent

Step-by-step explanation:

The tick marks show that they are congruent by SSS

3 0
3 years ago
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