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GenaCL600 [577]
2 years ago
12

Someone help me please

Mathematics
1 answer:
GuDViN [60]2 years ago
6 0

Answer:

A. (2(4x+7x))=P

B. 2(4(3)+7(3))=2(12+21)=2(33)=66

Step-by-step explanation:

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HELP! Ev evaluate the square root of 16 plus the square root of 29, correct to two decimal places.
Stella [2.4K]

Answer:

\sqrt{16} +\sqrt{29} =9.39

Step-by-step explanation:

\sqrt{16} =4

\sqrt{29} ≅ 5.39

4+5.39=9.39

6 0
3 years ago
Read 2 more answers
PLEASE HELP ITS MY TRIMESTER TEST MY MOM WILL KILL ME IF I FAIL! <3 WILL MARK BRAINLIST!
Artyom0805 [142]

Answer:

r =2.9985yd

Step-by-step explanation:

Given that the circumference of a circle is 2\pir

where r is the radius and \pi = 3.1415926....

You have

2\pir = 18.84 yd

2(3.1415926)r = 18.84 yd

6.2831r = 18.84yd

divide through by 6.2831

r = 2.9985yd = aprox 3yds

7 0
2 years ago
sara found a pair of jeans that was originally marked 85.00 but now have a clearance sticker for 54.50 what percent were the jea
Y_Kistochka [10]
U have to subtract from 85.00 from 54.00
5 0
2 years ago
Calculate the surface area and volume of the shape below.
pav-90 [236]

Surface area

Let's calculate the surface area of the rectangular block. It has length, width and height of L = 15, W = 5, H = 8. The surface area is going to be

SA = 2*(LW+WH+LH)

SA = 2*(15*5+5*8+15*8)

SA = 470

This is without the cylinder attached to the top surface. If we account for that, then we'll have to subtract off the area of the circle covered up which is

pi*r^2 = pi*3^2 = 9pi = 28.27433 approximately

So 470-28.27433 = 441.72567 is the approximate surface area of the rectangular block after we subtract off the circular portion covered up by the cylinder.

----------

The lateral surface area of the cylinder is approximately

2*pi*r*h = 2*pi*3*4 = 24pi = 75.39822

Which adds onto the top circular area of 28.27433 to get 28.27433+75.39822 = 103.67255

Meaning that 103.67255 is the surface area for the cylinder portion. Again we don't worry about the bottom portion as it's not part of the outer surface.

---------

Overall, the total surface area of this compound 3D figure is

(surface area for rectangular portion) + (surface area cylinder portion) = 441.72567+103.67255 = 545.39822

When rounding to the nearest whole number, the total surface area is about 545 square cm

<h3>Answer: 545 square cm</h3>

============================================================

Volume

The rectangular block has volume L*W*H = 15*5*8 = 600 cubic cm

The cylinder has volume pi*r^2*h = pi*3^2*4 = 113.0973355 approximately

Add the two volumes to get 600+113.0973355 = 713.0973355 and this rounds to 713. We don't have to do any subtraction in this section.

<h3>Answer: 713 cubic cm</h3>
4 0
3 years ago
What does x = and why and how does that number come out
dedylja [7]

More algebra pretending to be geometry.  These questions should be banished from the planet.

A transversal across parallel lines generates the usual congruent and supplementary angles; here our pair are supplementary, adding to 180 degrees.  Geometry done.

(2x + 12.8) + 117.6 = 180

2x = 180 - (12.8 + 117.6) = 49.6

x = 49.6/2 = 24.8

Answer: 24.8

7 0
2 years ago
Read 2 more answers
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