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3 years ago

Q # 13 please help me

Mathematics

2 answers:

Ede4ka [16]3 years ago

6 0

It is false. Since you don't know what is the variable equal to. But multiplication can't be in associative property.

Illusion [34]3 years ago

6 0

It’s false because since you don’t know what the varabile is equal to

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If a sphere is 120 feet in diameter what is the volume? <br><br> Help please

natulia [17]

Answer:

120

Step-by-step explanation:

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3 years ago

Leela sold her necklace for profit of 7% if she sell it for 294 more dollar she would have got 10% profit what is cost price

4vir4ik [10]

So, 10%-7%=3%=$294
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Answer: The cost price of the necklace is $9800.

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3 years ago

The radius of a cylindrical vessel is 7 cm and height is 1400 m . Find the cost of painting its inner curved surface area at the

Olegator [25]

Answer:

Cost = 616000 DHS per square centimetre.

Step-by-step explanation:

curved surface of a cylinder = 2 $\pi$ rh

r = 7 cm

h = 1400 m = 140000 cm

The outer curved surface area of the cylinder = inner curved surface area of the cylinder

The inner curved surface of the cylinder = 2 $\pi$ rh

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= 2 x 22 x 1 x 140000

= 6160000

The inner curved surface of the cylinder is 6160000 square centimetre.

But, the cost of painting is at the rate of 10 DHS per square centimetre.

The inner curved surface of the cylinder = 6.16 x $10^{6}$ square centimetre.

cost of painting the inner curved surface area = $\frac{6.16*10^{6} }{10}$

= 616000 DHS per square centimetre

The cost of painting the inner surface is 616000 DHS per square centimetre.

6 0

2 years ago

The function h(x)=x^2+3 and g(x)=x^2-6 if g(x)=h(x)+k what is the value of k

riadik2000 [5.3K]

Answer:

hello : k = - 9

Step-by-step explanation:

h(x) =x²+3 and g(x) = x² - 6.....(*)

g(x) = x² +3 + k.....(**)

by (*) and (**) : 3+k = -6

3+k - 3 = - 6 - 3

k = - 9

8 0

3 years ago

HELPP I don’t get this at all. I originally got c but my teacher said it was incorrect. This is about volume and cylinders. Expl

EastWind [94]

Answer:

Step-by-step explanation:

The formula for the volume of a cylinder is $\pi r^2 h$ , where r is the radius of the base and h is the height of the cylinder.

$\pi \cdot 3.25^2 \cdot 10=105.625\pi \text{ cm}^3$

Therefore, the correct answer is choice B. Hope this helps!

4 0

3 years ago

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