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2 years ago

Solve each inequality (question 21 please, already solved others)

Mathematics

1 answer:

VashaNatasha [74]2 years ago

8 0

$\bf \cfrac{9z+5}{4}+18 < 26\implies \cfrac{9z+5}{4} < 8\implies 9z+5$

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What are the solutions to the quadratic equation 40 − x2 = 0?

Zinaida [17]

40 - x^2 = 0
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x = + 40^0.5 or x = - 40^0.5

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2 years ago

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This trapezium is drawn on a centimetre grid. Find the area of the trapezium.

aivan3 [116]

Answer:

20 unit²

Step-by-step explanation:

A trapezium is given to us on the grid and we need to find out the area of the trapezium . In order to find the area , we need to find the measure of the parallel sides and the distance between the parallel sides.

From the grid :-

$\rm\implies Side_1 = 7 \ units$

$\rm\implies Side_2 = 3 \ units$

$\rm\implies \perp \ Distance =4 \ units$

Now here we got the two parallel sides of the trapezium and the distance between the two parallel sides. Now we can find the area as ,

$\rm\implies Area_{Trapezium}= \dfrac{1}{2}\times ( s_1 + s_2) \times \perp \ Distance \\\\\rm\implies Area = \dfrac{1}{2} \times ( 7 + 3 ) \times 4 \ unit^2 \\\\\rm\implies Area = \dfrac{1}{2} \times ( 10) \times 4 \ unit^2 \\\\\rm\implies\boxed{\rm Area = 20 \ unit^2}$

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2 years ago

What is the value of x in the equation -x=2-3x+6

Ahat [919]

-x+3x=2x
2x=2+6
2x=8
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2 years ago

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F(x)= 3x - 4x2 +6x and g(x)= 5x +2x2 – 3x. What is f(x) g(x)?

goldenfox [79]

f(x)g(x) = 9x² + 10x - 16

Step-by-step explanation:

Step 1:

Given f(x) = 3x - 4 × 2 + 6x and g(x) = 5x + 2 × 2 - 3x

f(x) = 9x - 8

g(x) = 2x + 4

f(x)g(x) = (9x - 8)(2x + 4)

= 18x² + 36x - 16x -32

= 18x² + 20x - 32

= 9x² + 10x - 16

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ruslelena [56]

Answer:

by experts to help you in doubt clearance & scoring excellent marks in exams.

Step-by-step explanation:

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