Find the value of x in the equation 9 – 4x = 57. A. –12 B. 16.5 C. –16.5 D. 12
Question
Updated 10/2/2018 10:18:54 AM
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Original conversation
User: Find the value of x in the equation 9 – 4x = 57. A. –12 B. 16.5 C. –16.5 D. 12

Weegy: 9 ? 4x = 57; -4x = 57 - 9; -4x = 48; x = -48/4; x = -12

User: You can calculate the interest on a savings account by using this formula: Interest = Principal × Rate × Time If Mary deposits \$275 in principal at an interest rate of 3.2 percent, how much interest will she earn in one year? A. \$880 B. \$18.80 C. \$88 D. \$8.80

Weegy: If Mary deposits \$275 in principal at an interest rate of 3.2 percent, the amount of interest she will earn in one year is \$8.80.
Score 1

User: Solve the system of equations 3r – 4s = 0 and 2r + 5s = 23. A. r = –1, s = –3 B. r = –12, s = 9 C. r = 4, s = 3 D. r = 12, s = 0

Question
Updated 10/2/2018 10:18:54 AM
Rating
8
3r – 4s = 0 and 2r + 5s = 23 ; Multiply equation 1 by 2 and equation 2 by 3. (3r – 4s = 0 ) * 2 ; 6r - 8s = 0 (2r + 5s = 23) * 3 ; 6r + 15s = 69 ; subtract both equations 6r - 8s - ( 6r + 15s ) = 0 - 69 ; 6r - 8s - 6r -15s = -69 ; -23s = -69 ; s = -69/-23 = 3 ;s = 3 ; 3r – 4s = 0 ; 3r - 4(3) = 0 ; 3r = 12 ; r = 12/3 = 4 ' r = 4 ; s =3.

Questions asked by the same visitor
Calculate the loss on selling 50 shares of stock originally bought at 133/4 and sold at 12. A. \$687.50 B. \$87.50 C. \$80.50 D. \$600.00
Question
Updated 189 days ago|7/20/2020 1:02:51 PM
Loss per share = 13 3/4 -12 = 55/4 - 12 = (55-48)/4 =7/4
Number of shares = 50
Total loss = 50 * 7/4 = 350 /4 =175/2 =\$87.50
Added 189 days ago|7/20/2020 1:02:51 PM
The floor of a rectangular deck has an area of 600 square feet. The floor is 20 feet wide. How long is the floor? A. 15 ft. B. 20 ft. C. 30 ft. D. 45 ft.
Question
Updated 88 days ago|10/29/2020 5:11:05 AM
The floor of a rectangular deck has an area of 600 q. ft. The floor is 20 ft. wide. The length of the floor is 30 ft.
Solution:
A = L * W
600 = L *20
L = 600 ÷ 20
L = 30
Added 88 days ago|10/29/2020 5:11:05 AM
What is the cube of 8? A. 2 B. 64 C. 24 D. 512
Weegy: The cube of 8 is 512. User: What are the prime factors of 700? A. 2 × 2 × 25 × 7 B. 350 × 2 C. 2 × 2 × 2 × 5 × 5 × 7 D. 2 × 2 × 5 × 5 × 7 Weegy: 700 = 2 x 2 x 5 x 5 x 7 User: What is 39 squared? A. 1,482 B. 78 C. 39 D. 1,521 Weegy: 39 squared is 1,521. User: Simplify the following expression: 35 + (–13) + (+8) – (–6). A. 44 B. 50 C. 24 D. 36 Weegy: 35 + ( 13) + (+8) ? ( 6) = 35 - 13 + 8 + 6 = 22 +8 +6 = 30 + 6 = 36 User: Which of the following is the same as 2.3 × 103? A. 2,300 B. 230 C. .23 D. .023 Weegy: 2.3 * 10^3 is the same as 2,300. User: Solve the equation: 12y = 132. A. y = 1/11 B. y = 11 C. y = 11/12 D. y = 144 Weegy: 12y = 132; y = 11; User: Using the Pythagorean theorem, find the length of a leg of a right triangle if the other leg is 8 feet long and the hypotenuse is 10 feet long. A. 12.81 ft. B. 36 ft. C. 6 ft. D. 41 ft. (More)
Question
Updated 125 days ago|9/21/2020 10:23:52 PM
Using the Pythagorean theorem, the length of a leg of a right triangle if the other leg is 8 feet long and the hypotenuse is 10 feet long is 6 feet.

Solution:
sqrt (10^2 - 8^2)
sqrt (100 - 64)
sqrt (36)
6 feet.
Added 125 days ago|9/21/2020 10:23:52 PM
Write 3 × 3 × 3 × 3 × 3 × 3 using exponents. A. 6^3 B. 3^6 C. 12^3 D. 9^4
Weegy: 3 × 3 × 3 × 3 × 3 × 3 written using exponents is 3^6. User: Solve this inequality: 3b – 7 Weegy: 3b - 7 < 32 ; 3b < 32 + 7 ; 3b < 39 ; b < 39/3 ; b < 13 (More)
Question
Updated 10/1/2018 5:55:49 PM
The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, how long is each spoke? Round your answer to the nearest hundredth. A. 6.69 inches B. 13.38 inches C. 6.25 inches D. 7 inches
Question
Updated 63 days ago|11/23/2020 7:08:10 AM
The spokes are representative of radius. The length of each spoke is: 7inches.

Added 63 days ago|11/23/2020 7:08:10 AM
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