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Bumek [7]
3 years ago
5

What is the area step by step please to understand and what is perimeter step by step please and the type I don't know please he

lp

Mathematics
2 answers:
LekaFEV [45]3 years ago
7 0
To find the area of a triangle, use the formula a=(1/2)bh.
a = area
b = base
h = height
So using the measurements in the picture...
b = 7.9
h = 5.9
Now using the measurement ^ to fill in the formula.
a=(1/2) 7.9 * 5.9
Now multiply the numbers to find a.
a=(1/2) 7.9 * 5.9
a= 3.95 * 5.9
a = 23.305
The area is 23.305 mm.

To find the perimeter, add up all the sides.
7.9 + 5.9 + 9.86
13.8 + 9.86
23.66
The perimeter is 23.66 mm.

The type of triangle is a right triangle because one of the angles is a right angle (90 degrees).









Yuliya22 [10]3 years ago
6 0
Area is you multiply 7.9 by 5.9 then divide by two and then the perimeter is you add 7.9+5.9+9.86 I think
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Hugo is buying DVDs that cost $15 each. He has a coupon for $5 off his total purchase. Write an equation to find the c the total
Allisa [31]

Answer:

85

Step-by-step explanation:

15 times 6 is 90. This is how much money he spends on 6 DVDs if they're all $15. 90 subtracted by 5 (remember - he gets $5 off his entire purchase, not just each individual DVD) would be 85!

4 0
3 years ago
If Mat have 5 3/4 of sugar to make pies and each pie uses 1/3 of sugar how many pies canat make?
german

The answer is 17 1/4...but you probably can’t have 1/4 of a pie, so Mat can make a total of 17 pies

8 0
3 years ago
In 2018, the population will grow over 700,000.The population of a city in 2010 was 450,000 and was growing at a rate of 5% per
Firlakuza [10]

Answer:

The year is 2020.

Step-by-step explanation:

Let the number of years passed since 2010 to reach population more than 7000000 be 'x'.

Given:

Initial population is, P_0=450,000

Growth rate is, r=5\%=0.05

Final population is, P=700,000

A population growth is an exponential growth and is modeled by the following function:

P=P_0(1+r)^x

Taking log on both sides, we get:

\log(P)=\log(P_0(1+r)^x)\\\log P=\log P_0+x\log (1+r)\\x\log (1+r)=\log P-\log P_0\\x\log(1+r)=\log(\frac{P}{P_0})\\x=\frac{\log(\frac{P}{P_0})}{\log(1+r)}

Plug in all the given values and solve for 'x'.

x=\frac{\log(\frac{700,000}{450,000})}{\log(1+0.05)}\\x=\frac{0.192}{0.021}=9.13\approx 10

So, for x > 9.13, the population is over 700,000. Therefore, from the tenth year after 2010, the population will be over 700,000.

Therefore, the tenth year after 2010 is 2020.

8 0
3 years ago
The price of a book rises from £16 to £20 work out the percentage increase​
Vladimir79 [104]

Answer:

25%

Step-by-step explanation:

20-16=4

So

16…4

1 … 4/16

100…4/16×100

1/4×100

25%

5 0
2 years ago
What is the total of a $12,50 item plus 6% sales tax
balandron [24]
It’s is 20,0000 but it think that’s wrong
6 0
3 years ago
Read 2 more answers
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