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3 years ago

14

Can somebody tell me the area of these figures:

1 answer:

Svetach [21]3 years ago

3 0

1) A = bh = 16*15 = 240 . . . . square units

2) There are a number of ways to decompose the shaded area, or to construct the shaded area. We'll do the latter.

The shaded area is 1/2 of a 4x4 square plus a small triangle below the center of the "butterfly". The latter has a base of 2 and a height of 1, so an area of
.. (1/2)*2*1 = 1
The total area is 4^2/2 +1 = 9 . . . . square units

You might be interested in

Write 6 11/13 as an improper fraction.

hoa [83]

Answer:

89/13

Step-by-step explanation:

Step 1:

Multiply the denominator by the whole number

13 × 6 = 78

Step 2

Add the answer from Step 1 to the numerator

78 + 11 = 89

Step 3

Write answer from Step 2 over the denominator

89/13

3 0

3 years ago

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

kolbaska11 [484]

Answer:

120 liters of 60% alcohol solution is needed

Step-by-step explanation:

Let's assume

x liters of 60% alcohol solution is added

so, we get solution as

$=\frac{60}{100}\times x$

$=0.6x$

we are given

40 liters of a 20% alcohol solution is

$=40\times\frac{20}{100}$

$=40\times\frac{20}{100}$

$=8$

so, total alcohol solution is

$=8+0.6x$

now, we can find total solutions

total solutions is

$=x+40$

now, it is making 50% solution

so, we get

$\frac{8+0.6x}{x+40} =\frac{50}{100}$

now, we can solve for x

$\left(8+0.6x\right)\cdot \:100=\left(x+40\right)\cdot \:50$

$800+60x=50x+2000$

$10x=1200$

$x=120$

So,

120 liters of 60% alcohol solution is needed

4 0

3 years ago

CAN SOMEONE PLEASE HELP ME PLEASE!!!!!

OverLord2011 [107]

Answer:

x4+7x3-2x2-9x-3 remainder -10

or we could write it as

x4+7x3-2x2-9x-3 - 10/(x+8)

Step-by-step explanation:

x+8 ) x5+15x4+54x3−25x2−75x−34 (x4+7x3-2x2-9x-3 <--- Quotient.

x5+ 8x4

7x4+54x3

7x4+56x3

-2x3-25x2

-2x3-16x2

-9x2-75x

-9x2-72x

-3x-34

-3x-24

-10 <--- Remainder.

7 0

2 years ago

yKpoI14uk [10]

$\\ \tt\leadsto tan\theta=\dfrac{Perpendicular}{Base}$

$\\ \tt\leadsto tan29=\dfrac{h}{400}$

$\\ \tt\leadsto h=400tan29$

$\\ \tt\leadsto h=221.7ft$

6 0

2 years ago

Read 2 more answers

Please answer ( DO NOT GIVE A FILE I WILL REPORT ) . Giving brainliest.

elena-14-01-66 [18.8K]

Answer:

Explanation:

so its referring to perimeter.

you add all values together.

this would equal 34.995 .

so, its 34.995 meters of fencing.

5 0

3 years ago