3x - 7y = 4
Question 2 options:
A) y = , or y =
B) y = , or y =
C) y = , or y =
D) y = , or y =
To solve this equation, we need to isolate the variable y.
Start by subtracting 3x from both sides of the equation:
-7y = -3x + 4
Next, divide both sides of the equation by -7 to solve for y:
y = (-3x + 4) / -7
Therefore, the answer is y = (-3x + 4) / -7.
So, the correct option is:
C) y = (-3x + 4) / -7, or y = -3x/7 + 4/7.
Perform the indicated operation. Write the answer without exponents.
(7 × 10-2) × (2 × 105) × (2 × 103)
Question 6 options:
A)
28,000,000
B)
28 × 10^6
C)
2,800,000
D)
28 × 10^-30
To perform the indicated operation, we can multiply the numbers together and add the exponents of 10.
(7 × 10^(-2)) × (2 × 10^(5)) × (2 × 10^(3))
First, multiply the numbers together:
(7 × 2 × 2) × (10^(-2) × 10^(5) × 10^(3))
= 28 × (10^(-2+5+3))
= 28 × 10^(6)
Therefore, the answer is:
B) 28 × 10^6
But it wants the answer without exponents
I apologize for the confusion. To write the answer without exponents, we can convert it to a decimal form.
Recall that 10^6 means moving the decimal point 6 places to the right. Therefore, we can rewrite the answer as:
B) 28,000,000
Convert as indicated.
4.9 ft to centimeters
To convert from feet to centimeters, we need to use the conversion factor 1 ft = 30.48 cm.
So, to convert 4.9 ft to centimeters, we can multiply 4.9 by the conversion factor:
4.9 ft * 30.48 cm/1 ft = 149.352 cm
Therefore, 4.9 ft is equal to 149.352 cm.
Answers:
A)
12.4 cm
B)
147 cm
C)
124.5 cm
D)
192.9 cm
The correct answer is:
C) 124.5 cm
Use a proportion to solve the problem.
The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 177 yards with a 7-iron, how far should he average with a 5-iron?
Question 9 options:
A)
166 yards
B)
212.4 yards
C)
148 yards
D)
188 yards