Answer:
The number is 35
Step-by-step explanation:
Let x be the number
1/5 x + 3x
=
2x + 42 Break the question into phrases and solve 1 phrase at a time.
1/5 = 0.2
0.2x + 3x = 2x + 42 Combine the left
3.2x = 2x + 42 Subtract 2x from both sides
3.2x - 2x = 42 Combine
1.2x = 42 Divide by 1.2
x = 42/1.2
x = 35
9514 1404 393
Answer:
(a) -7
Step-by-step explanation:
You are given f(x) = -3. Look for -3 in the f(x) column. (You will find it in the <em>first row</em>.)
You want the corresponding value of x. It will be in the <em>first row</em> of the x column. The value there is -7.
The value of x for f(x) = -3 is -7.
Answer:
10,300.77 cm³
Step-by-step explanation:
Radius = ½(diameter)
Diagonal:
sqrt[243 + 243]
sqrt(486)
Diameter
sqrt(486 + 243)
27
Radius: 27/2
Volume of sphere:
4/3 × pi × r³
4/3 × 3.14 × (27/2)³
10300.77 cm³
X axes are supposed to be positive and the y is negative.
8x - y = 54
8x + 2y = 60
subtracting, we get -3y = -6
y = 2
x = 7
Answer is (c) (7,2)
