<span>Using the
formula d=m/v, we first need to convert 5.0 and 45.0 to their SI unit
equivilents. 5.0g is 0.005kg, 45.0cm^3 becomes 0.000045m^3.Therefore, the density of your cube is 0.005/0.000045=111.11 kg/m^3(5 s.f)</span>
Answer:
The cost of the diamond last year is x = $ 830
Step-by-step explanation:
Let the cost of diamond last year = x
the cost of diamond present year = y
Given that diamond today cost ten dollars more than twice what it cost last year.
⇒ y = 2 x + 10 ------ (1)
The sum of the cost (last year and this year) is = $ 2500
⇒ x + y = $ 2500 -------- (2)
Put the value of y in equation (2) from equation (1), we get
⇒ 2 x + 10 + x = $ 2500
⇒ 3 x = 2490
⇒ x = $ 830
& y = 2500 - 830
⇒ y = $ 1670
Therefore the cost of the diamond last year is x = $ 830
Answer:
x = -11/7
x = 11/7
Step-by-step explanation:
49x² - 121
Factor
(7x + 11)(7x - 11)
roots
x = -11/7
x = 11/7
Answer:
x3+3x2-x-3
Step-by-step explanation:
Area of a square = side^2
area = 6.25^2 =
<span>
<span>
<span>
39.0625
</span>
</span>
</span>
square feet
= 39.06 (rounded)
