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3 years ago

What is the area of this trapezoid?

Mathematics

1 answer:

son4ous [18]3 years ago

5 0

Its C)126in I think because top base is 16, bottom base is 12 and the height is 9.

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Unit 1: Scientific Notation Constructed Response Assignment

balu736 [363]

brainly.com/question/5027087

Let C, S and H be the diameters of cell, sand and hair

Diameter of a cell: $C=1 \cdot 10^{-5}m$

Diameter of a grain of sand: $S=2 \cdot10^{-4}m$

Part A:

$H=0.000025=2.5 \cdot 10^{-5}$ meters, because it takes 5 movements right of the decimal dot, until there is only one digit to its left.

Part B:

we are comparing $S=2 \cdot10^{-4} m$ to $C=1 \cdot10^{-5} m$ ,

$\frac{S}{C}= \frac{2 \cdot 10^{-4}}{1 \cdot 10^{-5}}=\frac{20 \cdot 10^{-5}}{1 \cdot 10^{-5}}=20$

thus S is 20 times larger than C

Part C

$1m=1 \cdot10^9nm$

thus,

$H=2.5 \cdot 10^{-5}m=2.5 \cdot 10^{-5} \cdot 1 \cdot 10^9nm=2.5 \cdot 10^{-5+9}=2.5\cdot10^4nm$

Part D.

$1m=1\cdot 10^9nm\\\\1nm=\displaystyle{ \frac{1m}{10^9}=1\cdot 10^{-9}m}$

thus 300 nm are written in meters as follows:

$300nm= 300\cdot 1\cdot 10^{-9}m=3\cdot 10^2 \cdot 10^{-9}m=3\cdot 10^{-7}m$

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=211%3D6%283%2B8x%29%2B1" id="TexFormula1" title="211=6(3+8x)+1" alt="211=6(3+8x)+1" align="abs

harkovskaia [24]

X=4
211=18+48x+1
211=19+48x

5 0

2 years ago

Read 2 more answers

The jewerly store is having a sale. Necklaces that were regulaey priced at $23.50 are on dale for $18.80. What is the percentage

AveGali [126]

What we need to do is find the difference between the two numbers to find the difference in price and then figure out what the percent of 23.5 that is

23.50-18.80=4.7

now we'll set up a proportion

4.7 x
----- = -----
23.5 100

then cross multiply and divide

100×4.7=470/23.5=20

the percent of decrease is 20%

I hope I've helped!

8 0

3 years ago

6) Find the measure of ∠G.

topjm [15]

Answer:

m<G = 71

Step-by-step explanation:

Find x first

7x + 1 + 6x - 6 + 55 = 180

Combine like terms:

13x + 50 = 180

- 50 - 50

13x = 130

/13 /13

x = 10

Then apply to problem

7 (10) + 1

70 + 1

= 71

8 0

2 years ago

Read 2 more answers

Write an equation to represent the following statement.

Stells [14]

Step-by-step explanation:

"Is" means equals. "Less than" means subtracted from.

28 = k - 12

Add 12 to both sides to solve for k:

k = 40

6 0

3 years ago