Answer:
x =25
Step-by-step explanation:
This is an isosceles triangle because RS = ST
that means <r = <STR
4x-70 = STR
<STR + <STU = 180 straight line
subtract < STU from each side
<STR = 180 -<STU
we know angle stu = 6x
<STR = 180 -6x
we can substitute this into 4x-70 = STR
4x-70 = 180 -6x
add 6x to each side
4x+6x -70 = 180 -6x+6x
10x -70 = 180
add 70 to each side
10x-70+70 = 180+70
10x=250
divide by 10
10x/10 = 250/10
x =25
Answer:
12 two times or 4 eight times
St meaans s times t
s=-4
t=9
st=-4 times 9
negative times positive=negative
4 times 9=36
-4 time s9=-36
st=-36
answer is -36
Answer:
67 ½ units³ or 135/2 units³
Step-by-step explanation:
Volume = Base area × height
In case:
width is 6 the height is 4 1/2 and the length is 2 1/2
2 ½ = 5/2
4 ½ = 9/2
Volume = (6 × 5/2) × 9/2
= 15 × 9/2
= 135/2
= 67 ½ units³
$200 - 20% savings equals $160 total price
Tax is 6.5%
160X.065 = $10.40 for tax