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3 years ago

HHEELLPPP PLLLZZZZ RIGTH NOW I'LL MARK U BRAINLIST

Mathematics

2 answers:

netineya [11]3 years ago

7 0

Answer:

A and D I did it on edge:

Ivahew [28]3 years ago

6 0

So the first one is correct and the last option
(0,0), (1,2), (2,4)
and
(0,0), (4,1), (8,2)

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Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

TiliK225 [7]

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

$x=y+5$ ----> equation A

$120=xy+2x^{2}+2y^{2}$ ---> equation B (area of the constructed figure)

substitute the equation A in equation B

$120=(y+5)y+2(y+5)^{2}+2y^{2}$

$120=(y+5)y+2(y+5)^{2}+2y^{2}\\ 120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0$

using a graphing calculator -----> solve the quadratic equation

The solution is

$y=2\ cm$

Find the value of x

$x=y+5 ----> x=2+5=7\ cm$

Find the perimeter of rectangle

$P=2(x+y)=2(7+2)=18\ cm$

4 0

3 years ago

Read 2 more answers

Determine the possible side lengths of the third side of a triangle with known side lengths 3 and 6. answers: –3 < c < –9

vovangra [49]

Answer:

3 < c < 9

Step-by-step explanation:

The length of a side of a triangle cannot be negative. This eliminates the first and last options.

The addition of two sides of a triangle must be greater than the third side. In this case:

3 + 6 = 9 > c

So, the second option is correct. The third option is not correct, because, for example, c = 8 is possible

4 0

2 years ago

For the polynomial 17x2 – x: (3 marks)

Sladkaya [172]

Answer:

See below

Step-by-step explanation:

Given polynomial is: $17x^2 - x$

a. Terms: $17x^2, \: \&\: - x$

b. 17 and - 1

c. Binomial or quadratic polynomial

7 0

3 years ago

Jon: 4b-1= -4+ 4b +3<br> is this no solution

anygoal [31]

Answer:

b=0

Step-by-step explanation:

4b-1=-4+4b+3

4b-4b=-4+3+1

b=0

5 0

2 years ago

Is 3.4 a real number

anzhelika [568]

Answer: Yes, it is a real number. 3.4 is a rational number and rational numbers are real numbers. So 3.4 is a real number.

3 0

2 years ago