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djverab [1.8K]
1 year ago
9

Factorise fully 8x2-4x

Mathematics
1 answer:
choli [55]1 year ago
8 0

Answer:

4x(2x-1)

Step-by-step explanation:

Using GCF, you can be able to take out a factor of 4x from 8x^2 and 4x.

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A rectangle has an area of 20 square feet a similar rectangle has an area of 180 square feet what is ratio of the areas of these
Evgen [1.6K]

Answer:

The ratio of the areas of the smaller rectangle to the larger rectangle is  \frac{1}{9}

Step-by-step explanation:

we know that

if two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z-----> the scale factor

x-----> the area of the smaller rectangle

y----> the area of the larger rectangle

so

z^{2}=\frac{x}{y}

substitute the values

z^{2}=\frac{20}{180}

simplify

z^{2}=\frac{1}{9}

That means, the area of the larger rectangle is 9 times the area of the smaller rectangle

z=\frac{1}{3} ------> the scale factor

That means, the dimensions of the larger rectangle is 3 times the dimensions of the smaller rectangle

7 0
2 years ago
A side of the triangle below has been extended to form an exterior angle of 128°. Find the value of x.
denis23 [38]

Answer:

x = 104

Step-by-step explanation:

The exterior angle is equal to the sum of the opposite interior angles

24+x = 128

Subtract 24 from each side

24+x-24 =128 -24

x =104

3 0
3 years ago
Write each exponential function. <br>​
Dmitriy789 [7]

Answer:

0,4 1,2 2,1 3.5 4.25

Step-by-step explanation:

because i know

6 0
2 years ago
Linear function need help ASAP
ElenaW [278]

Answer:

y=1/3x+2

Step-by-step explanation:

Because it is linear equation in 2 variables

4 0
3 years ago
Read 2 more answers
B. If 3x - 3 and 5x + 7° are the angle of a linear pair, find their measurement the angle<br>​
ankoles [38]

Answer:

x = 22°

the angles are: 63° and 117°

Step-by-step explanation:

a linear pair of angles total together to be 180°

so:

3x - 3 + 5x + 7 = 180

combune like terms:

8x = 176

divide both sides of the equation by 8:

x = 22°

the angles are: 63° and 117°

7 0
2 years ago
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