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Kisachek [45]
3 years ago
13

Factorise -75ab² - 15ac

Mathematics
2 answers:
babunello [35]3 years ago
6 0

Step-by-step explanation:

THE ANSWERS ARE

1 B

2A

3C

4A

6B

krok68 [10]3 years ago
3 0

Answer:

9) 51 × 10⁻⁵ = 0.00051

10) Cash price = #54,000 × (1 - 0.125) = #47,250

11) -40·p·q÷(-2)² = -10·p·q

12) 0.003 × 0.045 = 1.35 × 10⁻⁴

13) N40°W = 320°

14) The base diameter of the cylinder = √(4 × (700×π cm³/7)/π) = 20 cm

15) The LCM of 2·x²·y, 3·x·y² is 12·x²·y²

16) 636,000 = 6.36 × 10⁵

17) 1/3·π·r²·h₁ = π·r²·h₂

h₂/h₁ = 1/3·π·r²/( π·r²) = 1/3

h₂/12 =  1/3

h₂ = 12/3 = 4 cm, the height of the cylinder = 4 cm

18) The angle = 180 + 45 = 225°

19) The total surface area = 22/7×14²/4 +  22/7 ×14 × 20 = 1034 cm²

20) The number is 58/2 = 29.

Step-by-step explanation:

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which expression have a value of 16/81? check all that apply. (2/3)^4, (16/3)^4, (4/81)^2, and (4/9)^2
notka56 [123]

Use\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\\left(\dfrac{2}{3}\right)^4=\dfrac{2^4}{3^4}=\dfrac{16}{81}\ :)\\\\\left(\dfrac{16}{3}\right)^4=\dfrac{16^4}{3^4}=\dfrac{16^4}{81}\neq\dfrac{16}{81}\ :(\\\\\left(\dfrac{4}{81}\right)^2=\dfrac{4^2}{81^2}=\dfrac{16}{81^2}\neq\dfrac{16}{81}\ :(\\\\\left(\dfrac{4}{9}\right)^2=\dfrac{4^2}{9^2}=\dfrac{16}{81}\ :)

6 0
3 years ago
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The x- and y- coordinates of point N are both negative. In which quadrant is point N located?
meriva

Answer:

<em>N </em>is located in the third quadrant

Step-by-step explanation:

since the y coordinate is a negative and so is the x coordinate, the negative y would push <em>N </em>down and the negative x would push it left, landing the coordinates of <em>N</em> in the 3rd quadrant.

4 0
3 years ago
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If y is directly proportional to x^2 and y=18 and x=3,
Svetach [21]

Answer:

Step-by-step explanation:

(i)

y=k*x^2\\\\if\ x=3, y=18 ==> 18=k*9\ ==> k=2\\\\Equation\ is:\ y=2x^2\\

(ii)

x=5 ==> y=2*5²=50

(iii)

32=2*x^2\\x^2=16\\x^2-4^2=0\\(x-4)(x+4)=0\\\\x=4\ or\ x=-4\\

7 0
2 years ago
How do I do this? <br> Hurry I need help
KatRina [158]

Answer:

Step-by-step explanation:

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5 0
3 years ago
Which expression is equivalent to 16.8−18.6
olganol [36]

Answer:

D.16.8+(-18.6)

Step-by-step explanation:

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