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FrozenT [24]
3 years ago
10

Can somebody help me out pleaseeee ??

Mathematics
2 answers:
frutty [35]3 years ago
8 0

answer : 54cm^2

pythagorus’ theorum : a^2 + b^2 = c^2

so 9^2 + x^2 = 15^2, x being the missing length

work out x ...

81 + x^2 = 225

x^2 = 144

x = 12

area of a triangle : 0.5 x base x height

so 0.5 x 9 x 12 = 54

nexus9112 [7]3 years ago
5 0

Answer:

67.5cm^2

Step-by-step explanation:

area of a triangle is 0.5xaxb

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When you divide with negative exponents, you divide the rational numbers like normal and then you add the exponents.
Doss [256]

Answer:

the same as multiplying them, except you're doing the opposite: subtracting where you would have added and dividing where you would have multiplied. If the bases are the same, subtract the exponents. Remember to flip the exponent and make it positive, if needed.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
it cost $35 for one adult and two children to attend a show. It cost $60 for two adults and three children to attend the same sh
N76 [4]
Assume that,
adult = x
child = y

x+2y = 35 (1st equation)
2x+3y = 60 (2nd equation)
x = 35-2y (3rd equation)

Substitute 3 into 2 :

2(35-2y) + 3y =60
70-4y +3y = 60
y = 10

x+2y = 35
x+2(10) =35
x +20 =35
x = 15

One adult = $15


7 0
3 years ago
What is the volume of the composite figure?
saw5 [17]

volume of a sphere is 4/3 * PI * r^3

r = 6

r^3 = 6^3 = 216

4/3 * 216 = 288

 Volume = 288 PI in^3

3 0
3 years ago
May someone help me out with this please please
torisob [31]
I = PRT/100 I = Simple Interest P = Principal R = Interest Rate per period T = Time ( no. of periods ) Interest = (2500×9.5×3)/100 = 712.50 Answer : $2500 - $712.50 = $1787.50
8 0
3 years ago
-5 + x =3 solve for x <br> PLEASE HELP ME ASAP
hram777 [196]

Answer:

x = 8

Step-by-step explanation:

Step 1: Write equation

-5 + x = 3

Step 2: Solve for <em>x</em>

  1. Add 5 to both sides: x = 8

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

-5 + 8 = 3

3 = 3

5 0
3 years ago
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