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2 years ago

10 of 10

Mathematics

2 answers:

olga nikolaevna [1]2 years ago

7 0

Answer:

456mm²

Step-by-step explanation:

using formula;

b/2( P - 2b) = A

substitute values

Fed [463]2 years ago

4 0

Let the height of the rectangle = h

2b + 2h = 100

2(38) + 2h = 100

2h = 100 - 76

h = 12mm

area of rectangle = base x height

= 38 x 12

= 456mm²

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kicyunya [14]

Answer:

611m²

Step-by-step explanation:

Too difficult to explain by words, it's in the picture.

Hope this helps!

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2 years ago

NEED HELP PLEASE!!!! (10 PTS)

slavikrds [6]

Tigers:-

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2 years ago

What is the slope of this line. Please see image below

Mariulka [41]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Marco has a piece of wood that measures 9 x 1/10 + 6 x 1/100 + 4 x 1/1000 how can this measurement be written as a decimal? you

spin [16.1K]

Answer:

The decimal number is 0.964

Step-by-step explanation:

we have

$9(\frac{1}{10})+ 6(\frac{1}{100})+4(\frac{1}{1,000})$

step 1

Multiply each fraction by the whole number

$(\frac{9}{10})+ (\frac{6}{100})+(\frac{4}{1,000})$

step 2

Convert each fraction in a decimal number

Remember

Move the decimal point to the left as many places as there are zeros in the factor.

Move the decimal point one step to the left (10 has one zero).

Move the decimal point two steps to the left (100 has two zeros)

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step 3

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2 years ago

Determine the corresponding general form of each of the following vertex form

SSSSS [86.1K]

Answer:

Step-by-step explanation:

(a + b)² =a² + 2ab + b²

(a -b)² = a² - 2ab + b²

1) y = (x -1)²

y= x² - 2*x*1 + 1

y = x² - 2x + 1

Ans: C

2)y = (x +4)² + 5

y = x² +2*x*4 + 4² + 5

= x² + 8x + 16 + 5

y = x² + 8x + 21

3) y = -(x + 9)²- 10

y = - [x² + 18x + 81] - 10

= -x² - 18x - 81 - 10

y =-x² - 18x - 91

4) y = 3(x + 2)² - 18

y =3 [x² + 4x + 4] - 18

y = 3x² + 12x + 12 - 18

y =3x² + 12x - 6

5) y = -2(x + 1)² - 16

= -2[x² + 2x + 1] -16

= -2x² - 4x - 2 - 16

y = -2x² - 4x - 18

6) y = 5(x + 5)²

=5[x²+ 10x + 25]

y = 5x² +50x + 125

7)y = (1/2)(x + 8)² - 8

y = (1/2) (x² + 16x + 64) - 8

$y = \dfrac{1}{2}*x^{2}+ \dfrac{1}{2}*16x + \dfrac{1}{2}*64 -8\\\\\\y =\dfrac{1}{2}x^{2}+8x +32 - 8\\\\\\y=\dfrac{1}{2}x^{2} +8x + 24$

8) y = (x + 3/2)² + 3/4

$y = x^{2} +2*x*\dfrac{3}{2}+\dfrac{9}{4}+\dfrac{3}{4}\\\\y=x^{2}+3x+\dfrac{12}{4}\\\\\\y=x^{2}+3x + 3$

9) y = 2[x² + 16x + 64] - 5x

y = 2x² + 32x + 64 - 5x

y =2x² + 27x + 6

4 0

2 years ago