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GenaCL600 [577]
2 years ago
8

A = 9 m, b = 4 m and c = 13 m for the triangle shown below.

Mathematics
1 answer:
maw [93]2 years ago
7 0
The answer is 9 shown below a b c triangle shown below ⬇️
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The figure below shows a shaded region and a non-shaded region. Angles in the figure that appear to be right angles are right an
scoundrel [369]

Answer:Area of part 1:

A1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

Area of part 2:

A2=length*width=(8+2)*1=10 ft2

Area of part 3:

A3=length*width=8*2=16 ft2

Total shaded area : A1+A2+A3=41 ft2

Total area of the reactangle : A=16*8=128 ft2

Total area of the nonshaded region : 128-41=87 ft2

Step-by-step explanation: Plz make brainliest

5 0
3 years ago
Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease
Ket [755]

Answer: There are approximately 853827 new cases in 6 years.

Step-by-step explanation:

Since we have given that

Initial population = 570000

Rate at which population decreases is given by

\frac{2}{3}

Now,

First year =570000

Second year is given by

570000\times (\frac{1}{3})

Third year is given by

570000(\frac{1}{3})^2

so, there is common ratio ,

it becomes geometric progression, as there is exponential decline.

so,

570000,570000\times \frac{1}{3},570000\times( \frac{1}{3})^2,......,570000\times (\frac{1}{3})^6

a=570000

common ratio is given by

r=\frac{a_2}{a_1}=\frac{1}{3}

number of terms = 6

Sum of terms will be given by

S_n=\frac{a(1-r^n)}{(1-r)}

We'll put this value in this formula,

S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16

So, there are approximately 853827 new cases in 6 years.

6 0
2 years ago
I Really Need Help With This Please.
Flura [38]
ABC=DBC

(This will probably be a way more complex explanation than you need but it’s what I did.)

Okay so you know B=B because they’re both right angles. You know A=D because of the isosceles triangle theorem- if two sides of a triangle are congruent, then the angles opposite those sides are congruent. That leaves C=C. If B=B and A=D and all triangles add up to 180 degrees, C and C need to be the same.
6 0
2 years ago
Read 2 more answers
state if the triangles in each pair of similar. If so, State how you know that they are similar and complete the similarity stat
iragen [17]

Answer:

Similar, AA similarity, ΔAKL

Step-by-step explanation:

BC and KL are parallel.  Therefore, ∠B and ∠K are alternate interior angles, and ∠C and ∠L are also alternate interior angles.  Alternate interior angle are congruent, so by AA similarity, ΔABC ~ ΔAKL.

4 0
3 years ago
PLZZZZZ HELP ME ANYONE PLEASE HELP ME :(! Marcus has a box that is 4 1/2 feet long, 1/2 foot wide, and 2 feet high. What is the
Keith_Richards [23]

Answer:

4.5

Step-by-step explanation:

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