Answer:
x=
1/2
and y=3
Step-by-step explanation:
Let's solve your system by substitution.
y=10x−2;2x+y=4
Step: Solvey=10x−2for y:
y=10x−2
Step: Substitute10x−2foryin2x+y=4:
2x+y=4
2x+10x−2=4
12x−2=4(Simplify both sides of the equation)
12x−2+2=4+2(Add 2 to both sides)
12x=6
12x
12
=
6
12
(Divide both sides by 12)
x=
1
2
Step: Substitute
1
2
forxiny=10x−2:
y=10x−2
y=10(
1
2
)−2
y=3(Simplify both sides of the equation)
Answer:
x=
1
/2
and y
Answer:
To prove a quadrilateral is a rhombus, here are three approaches:
- <em><u>Show that the shape is a parallelogram with equal length sides; </u></em>
- <em><u>Show that the shape is a parallelogram with equal length sides; Show that the shape's diagonals are each others' perpendicular bisectors; or</u></em>
- <em><u>Show that the shape is a parallelogram with equal length sides; Show that the shape's diagonals are each others' perpendicular bisectors; orShow that the shape's diagonals bisect both pairs of opposite angles.</u></em>
Answer: DE=11
Step-by-step explanation:
3x-28+3x-30+x=33
3x+3x+x-28-30=33
7x-58=33
7x=91
x=13
DE=3x-28
DE=3(13)-28
DE=39-28
DE=11
Answer:
Answer: Gemma made $34 more than Leah. Leah made 39 more necklaces than Gemma.
Step-by-step explanation:
30 60 90 right triangle on the right
ratio of short leg: long leg :hypo = a: a√3: 2a
So if hypo = 52 cm then short leg = 52/2 = 26 cm
The other right triangle on the left is 45 45 90 because it has 2 equal sides
ratio of leg: leg :hypo = a: a: a√2
the leg = 26 cm
so hypo x = 26√2
Answer
26√2 cm
