Answer:
10p coins does he have 102
Step-by-step explanation:
given data
saves= 10p coins and 20p coins
total = 17 pounds
to find out
how 10p coins does he have
solution
we consider here no of 20p coin = x
so equation will be here
3 × 10 x +20 x = 1700
30 x + 20 x = 1700
x = 34
so that
10p coins = 3 time × 34 = 102
20p coins = 34
so that 10p coins does he have 102
Answer:
24 cm²
Step-by-step explanation:
We assume that is a circumscribing quadrilateral, rather than one that is circumscribed. It is also called a "tangential quadrilateral" and its area is ...
K = sr
where s is the semi-perimeter, the sum of opposite sides, and r is the radius of the incircle.
K = (12 cm)(2 cm) = 24 cm²
_____
A quadrilateral can only be tangential if pairs of opposite sides add to the same length. Hence the given sum is the semiperimeter.
Answer:
<h2>7x + 3</h2>
Step-by-step explanation:
The circumference of any polygon is equal to the sum of the lengths of the sides of this polygon.
Therefore
P = 2x + (x + 5) + (4x - 2) <em>combine like terms</em>
P = (2x + x + 4x) + (5 - 2)
P = 7x + 3
Density = mass / volume
Givens
Density = 13.6 grams / cm^3
mass = 47 grams.
Solve
D = m/v
13.6 = 47 / volume Multiply by volume
13.6 * volume = 47 Divide by 13.6
volume = 47 / 13.6
Volume = 3.46 ccs
Answer:
x=7 and y=3
Step-by-step explanation:
Step: Solve x−3y=−2 for x:
x−3y=−2
x−3y+3y=−2+3y(Add 3y to both sides)
x=3y−2
Step: Substitute3y−2for x in x+3y=16:
x+3y=16
3y−2+3y=16
6y−2=16(Simplify both sides of the equation)
6y−2+2=16+2(Add 2 to both sides)
6y=18
6y
6
=
18
6
(Divide both sides by 6)
y=3
Step: Substitute3foryinx=3y−2:
x=3y−2
x=(3)(3)−2
x=7(Simplify both sides of the equation)
Answer:
x=7 and y=3