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2 years ago

2 x + 3 + 7x equals -24 what is the value of x

Mathematics

1 answer:

Anon25 [30]2 years ago

3 0

Answer:

2x+3+7x=-24 (combine like terms)

9x+3=-24

9x=-27

x=-3

Step-by-step explanation:

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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

= 2 x $\frac{22}{7}$ x 7 x 140000

= 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

I need help with this 7f + 2f - 3b + b I can't figure it out

Leni [432]

Answer:

9f-4b

Step-by-step explanation:

you add the two fs together and you add the two bs together to get the answer

5 0

2 years ago

What is the product? (X^4) (3x^3-2)(4x^2+5x)?

Allisa [31]

(x^4)(3x^3-2)(4x^2+5x)

=(3x^7-2x^4)(4x^2+5x)

=12x^9+15x^8-8x^6-10x^5

answer: 12x^9+15x^8-8x^6-10x^5

8 0

3 years ago

-9.b = 45 b = What is the answer I need to know the answe

BaLLatris [955]

Answer:

b=-5

Step-by-step explanation:

Divide by -9 to eliminate the -9 on -9b

(Since -9b is the same thing as -9 times b we can use the inverse of multiplication which is division to eliminate the -9 from b but we need to do it on both sides to make it balance)

-9b/-9=45/-9

b=-5

7 0

2 years ago

Solve for x: please help

valina [46]

Answer:

45 because an acute angle is 45 degrees

7 0

2 years ago

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2 x + 3 + 7x equals -24 what is the value of x ​

2 x + 3 + 7x equals -24 what is the value of x