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scZoUnD [109]
2 years ago
15

Given constants a and b such that x2 + ax + b has factors (x + 7) and (x + 2) what is a?​

Mathematics
1 answer:
dezoksy [38]2 years ago
8 0

Answer:

a=9 , b=14

Step-by-step explanation:

Just do the operation (x+7)(x+2)

x(x)+x(2)+7(x)+7(2)

x^2+2x+7x+14

x^2+9x+14

So a=9 and b=14

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The graph (shown in red) below shows the solution set of which inequality?
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Answer:

I think that is a

Step-by-step explanation:

5 0
3 years ago
Find the area of a trapezium whose parallel sides are 28.7 cm and 22.3 cm and distance between parallel sides is 16 cm.
puteri [66]

Given:

The parallel sides of a trapezium are 28.7 cm and 22.3 cm.

The distance between parallel sides is 16 cm.

To find:

The area of a trapezium.

Solution:

The area of the trapezium is:

A=\dfrac{a+b}{2}h

Where, a,b are parallel sides and h is the vertical distance between the parallel sides.

Putting a=28.7, b=22.3,h=16 in the above formula, we get

A=\dfrac{28.7+22.3}{2}\times(16)

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A=51\times 8

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Therefore, the area of the trapezium is 408 square cm.

4 0
3 years ago
Write and solve a real-world problem that represents the following one-variable inequality.
serg [7]
Hello there! An example problem for this could be:
Emile is looking for a cell-phone plan. His two options are one that costs $40 up front, and costs $0.01 per text, represented by x. The second one is 15 dollars up front and costs $0.06 for each text message. Emile figures that for the first package he has to send 500 texts or more to make it less than the second one. 
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3 years ago
A window in the shape of a parallelogram has the dimensions given.
devlian [24]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
If f(x) = 3x and g(x)=2x, what is (g o f)(x)?<br> 5x<br> 5x2<br> 6x<br> 6x2
eduard

If you would like to solve (g ° f)(x), you can calculate this using the following steps:<span>

(g ° f)(x) = g(f(x))

(g ° f)(x) = g(f(x)) = g(3x) = 2 * 3x = 6x

<span>The correct result would be 6x.</span></span>

5 0
2 years ago
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