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andrezito [222]
3 years ago
13

-3(b – 7) I need a answer bad

Mathematics
2 answers:
iragen [17]3 years ago
7 0
-3(b - 7)...distribute thru the parenthesis...that means multiply 3 by everything in the parenthesis to get rid of the parenthesis

(-3 * b) - (-3 * 7) = -3b - (-21) = -3b + 21 <==
guajiro [1.7K]3 years ago
5 0
-3(b - 7)

-3*b = -3b

-3*7 = -21

-3b - 21
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A coat of paint of thickness 0.06 cm is to be applied uniformly to the faces of a cube of edge 33 cm. Use differentials to find
Aneli [31]

Answer:

392 cm^3

Step-by-step explanation:

Let X represent the edge of a cube

let t represent the thickness of the paint.

Volume of a cube = x^3

V = x^3

Differentiate V with respect to x

dV/dx = 3x^2

dV = 3x^2 dx

dx = 2dt

= 2(0.06)

= 0.12

dV = 3(33)^2 (0.12)

dV = 392.04cm^3

dV = 392 cm^3

6 0
3 years ago
Can somebody please help me? :)
zhannawk [14.2K]

Answer:

33ft

Step-by-step explanation:

12ft + 4ft + 7ft + 10ft = 33ft

7 0
3 years ago
How many times greater is the value of 5 in 3,590 than the value of 5 in 359 ?
Tresset [83]

Answer:

10 times greater is the value of 5 in 3,590 than the value of 5 in 359.

Step-by-step explanation:

To find : How many times greater is the value of 5 in 3,590 than the value of 5 in 359 ?

Solution :

The place value stem is

Thousand     Hundred     Tens    Ones

  1000               100            10         1

The value of 5 in 3,590 is at hundred place

So, 5\times 100=500

The value of 5 in 359 is at tens place

So, 5\times 10=50

Number of time greater is the value of 5 in 3,590 than the value of 5 in 359 is given by,

n=\frac{500}{50}

n=10

Therefore, 10 times greater is the value of 5 in 3,590 than the value of 5 in 359.

4 0
3 years ago
The diameter of the circle is 12m find the circumference and leave at pi
SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

Here, d=12 m

r=12/2=6 m

Now,

Circumference(c)=2πr

=2π6

=12π m

5 0
3 years ago
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serg [7]

Answer:

(2,3)

If you have any questions about the way I solved it, don't hesitate to ask ÷)

8 0
3 years ago
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