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3 years ago

I need help ASAP!!Please help me

Mathematics

1 answer:

Aleks04 [339]3 years ago

4 0

Answer:

Below

Step-by-step explanation:

To find the volume of a rectangular prism find the area of a face and multiply it by the height

V = lwh

= (12)(5)(12)

= 720 km^3

Hope this helps!

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Find the area of a rectangle that measures 3 feet by4 inches give the area. In square inches

frutty [35]

Answer:

Area of the rectangle = 144 square inches

Step-by-step explanation:

Area of a rectangle = length × width

Width = 4 inches

Length = 3 feet

1 feet = 12 inches

3 feet = 36 inches

Area of a rectangle = length × width

= 36 inches × 4 inches

= 144 square inches

Therefore,

Area of the rectangle = 144 square inches

3 0

4 years ago

Square with sides measuring 12in

malfutka [58]

Perimeter = 48in Area =144 in

4 0

3 years ago

Select the correct answer from the drop-down menu. Find the solution set for the system of equations. 9x + 5y = 28 5x + 9y = 56

Aliun [14]

The correct answer is
x = -0.5
y = 6.5
or
(x, y) = (-0.5, 6.5)

5 0

4 years ago

Read 2 more answers

If Mrs.Burks spent 3.87 on grapez at kroger and bought 3.05 pounds,how much was each pound

pashok25 [27]

Answer:

1.26885245902 or rounded to $1.27 per pound.

Step-by-step explanation:

you can just divide 3.87/3.05 to see how much each pound costed. if you needed to round to the nearest cent, you would round up to 1.27.... or if not, keep it at 1.26885245902.

then to check your work, you can just multiply (1.26885245902) by (3.05) to get the total amount she had spent.

4 0

3 years ago

Use the quadratic formula to solve for x. 4x2 +9x-1=0

insens350 [35]

Answer:

$x=\frac{-9\pm\sqrt{65} }{8}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

Step-by-step explanation:

Step 1: Define

4x² + 9x - 1 = 0

Step 2: Define variables

a = 4

b = 9

c = -1

Step 3: Find roots

Substitute: $x=\frac{-9\pm\sqrt{9^2-4(4)(-1)} }{2(4)}$
Exponents: $x=\frac{-9\pm\sqrt{81-4(4)(-1)} }{2(4)}$
Multiply: $x=\frac{-9\pm\sqrt{81-16} }{8}$
Subtract: $x=\frac{-9\pm\sqrt{65} }{8}$

5 0

3 years ago