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Over [174]
3 years ago
10

A rectangle has width of x - 1 and length of 2x + 3 , find the area of the rectangle.

Mathematics
1 answer:
nataly862011 [7]3 years ago
5 0

Answer:

this question could lead to quadratic equation

area \: of \:rectangle = length \times width  \\  =  (2x  + 3) \times (x - 1) \\  = (2x + 3)(x - 1) \\  = 2 {x}^{2}   -  2x  + 3x - 3 \\  = 2 {x}^{2}   +  x - 3

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Find the sum of the digits 10^15−1.
Alchen [17]

Answer:

149

Step-by-step explanation:

4 0
3 years ago
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Which of the following equations shows how substitution can be used to solve
maxonik [38]

Answer:  Choice B)

2x+5(2x+3) = 3

============================================

Reasoning:

We start with the second equation 2x+5y = 3

Since y = 2x+3 from the first equation, we can replace every copy of y with (2x+3). This replacement is valid because y and 2x+3 are the same.

So that's how we go from 2x+5y = 3 to 2x+5(2x+3) = 3

This replacement is done to get rid of the y variable, and it allows us to solve for x later on.

3 0
3 years ago
The oven tray is 600mm by 500mm. A cake tin is 25cm in diameter. How many cake tins can jenny fit on the oven tray at one time?
vlada-n [284]
Area of Circle= \pi 
r^{2}
                      = \frac{22}{7} x ( \frac{25cm}{2}) ^{2}
                      = 490.87cm^{2}

Area of Oven tray= 60cm x 50cm
                            = 3000cm^{2}

: . # tin that can hold on bake tray= 3000cm^{2} / <span>490.87cm^{2}                                 = 6.11
Thus making it logically 6..... </span>
8 0
4 years ago
Please help!! (no links)
attashe74 [19]

Answer:

3/32

Step-by-step explanation:

The first question should be 3/8 as there are 3 "1"s on the spinner. The answer to the last one is "3/32". You take the 3/8 chances to get a one and multiply that by 1/4 to get a "B". Once you multiply you get .09375 which is 3/32 when converted. Please let me know if this is incorrect.

5 0
3 years ago
What is the answer for this please help -31=3w+9-8w simplify you answer as much as possible
ki77a [65]

-31=3w+9-8w\\\\-5w+9=-31 \ \ /-9\\\\-5w=-40 \ \ /:(-5)\\\\\huge\boxed{w=8}

3 0
3 years ago
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