Answer:
Breadth=45 cm and Area = 3150
Step-by-step explanation:
Length= 70 cm and breadth =?
Perimeter=2(l+b)
or,230=2(70+b)
or,230=140+2b
or,230-140=2b
or,90/2=b
or,b=45cm
Breadth=45cm and Length=70cm
Area=l×b
=70×45
=3150cm^2
This might take me a while but here we go! :)... So another form is (6,000,000 + 7,200). Another form is Just actually writing the whole Number out but with Words instead of Numbers! Cool right? Well I hope this helps you with your homework Byeee :)
Answer:
y=3 and x=0
Step-by-step explanation:
3x−3y=−9. i'm going to solve for x.
3x−3y<em>+3y</em>=−9<em>+3y</em>
3x=3y−9
3x/3=(3y-9)/3 to isolate x we have to divide everything by 3
x=y−3
so now that we have x we can substitute it in 4x+4y=12
4(y-3)+4y=12
4y-12+4y=12
8y-12=12
8y-12<em>+12</em>=12<em>+12</em>
8y=24
8y/8=24/8
y=3
we have y which equals 3, so now we can substitute it into any equation so solve for x again.
3x – 3y = -9
3x-3(3)=-9
3x-9=-9
3x-9+9=-9+9
3x=0
3x/3=0/3
x=0
so, final answers are y=3 and x=0
checking our work:
3(0)-3(3)=-9
0-9=-9
-9=-9 true
4(0)+4(3)=12
0+12=12
12=12 true
Answer:
24
Step-by-step explanation:
Let's do the smaller parts at the edge.
The formula for a triangle is 1/2bh
The base is 3 the height is 4
3 times 4 is 12
12 divided by 2 is 6
Since there are two of the same triangle on the edge both of the triangle's area is 6 which is 12
No for the upper triangle, the base is 6 and the height is 4
4 times 6 is 24
24 divided by 2 is 12
12 plus 12 is 24
The answer is
The area of the shaded parts of the triangle is 24 in^2
Hope this helps!
RS+ST=RT
RS=7y-4
ST=y+5 using RS and RT in the first equation gives you:
7y-4+y+5=RT combine like terms on left side
8y+1=RT, and we are told that RT=28 so:
8y+1=28 subtract 1 from both sides
8y=27 divide both sides by 8
y=27/8
(RS=19 5/8, ST=8 3/8, RT=28)
