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Elis [28]
3 years ago
13

Factorise 2x²-9x+10 (this must be put in two brackets)

Mathematics
2 answers:
kap26 [50]3 years ago
8 0
2 x^{2} -9x+10=2 x^{2} -4x-5x+10=2x(x-2)-5(x-2)= \\ =(x-2)(2x-5).
galben [10]3 years ago
4 0
Find both roots :
\Delta=81-80=1 hence r=\frac{9\pm1}4=\frac{5}2\text{ or }2

Thus it is 2(x-\frac{5}2)(x-2)
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If the area of a circle is 121pie square units, what is the diameter
velikii [3]
Since you are given the area, we can solve for radius with this equation:
A_c = \pi r^2
r = \sqrt{ \frac{A_c}{ \pi } } = \sqrt{ \frac{121 \pi }{ \pi } } = \sqrt{121} = 11

The radius is 11, so the diameter must be 2 times that, which is 22. With the correct units, the answer is 22 units²
4 0
3 years ago
Find the greatest common factor of 24, 64, 108.
Ainat [17]

Answer:

The answer is 4.

Step-by-step explanation:

To find the greatest common factor (GCF), start by listing the factors of each number.

For 24: 1, 2, 3, 4, 6, 8, 12, 24

For 64: 1, 2, 4, 8, 16, 32, 64

For 108: 1, 2, 3, 4, 6, 9, 12, 18

Since all the factors are now written out, we can find the greatest common factor between 24, 64, and 108, and the GCF is 4.

6 0
3 years ago
Find the value of x.
ruslelena [56]

Answer:

4

Step-by-step explanation:

(10 - x ) / x = 3/2                Cross Multiply

2*(10 - x) = 3x                    Remove the brackets

20 - 2x = 3x                       Add 2x to both sides

20 = 3x + 2x

5x = 20                              Divide both sides by 5

x = 20/5

x = 4

8 0
3 years ago
Can you helo me with number 8?​
kow [346]

Answer:

all work is shown and pictured

8 0
3 years ago
Read 2 more answers
What is the measure of angle 1?<br> 20°<br> 42°<br> 138°<br> 160°
nikdorinn [45]

Step-by-step explanation:

line s || line t

r is the transversal,

Therefore,

(7x-2)°= (6x+18)° {exterior alternate angles}

7x-6x=18+2

x=20°

r is also a straight line,

therefore,

7x-2+angle1=180° (straight angle)

7x-2+ angle1=180°

7(20)-2+ angle 1= 180°

140°-2+ angle 1= 180°

angle 1= (180-140+2 )°= 42°

angle 1= 42°

8 0
3 years ago
Read 2 more answers
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