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3 years ago

Help please with explanation

Mathematics

2 answers:

quester [9]3 years ago

7 0

Answer:

A = 104 m²

Step-by-step explanation:

The figure is composed of a rectangle and a triangle

area of rectangle = 10 × 8 = 80 m²

area of triangle = $\frac{1}{2}$ bh ( b is base and h the perpendicular height )

Here b = 8 and h = 6 , then

area = $\frac{1}{2}$ × 8 × 6 = 4 × 6 = 24 m²

Then

A = 80 + 24 = 104 m²

NeX [460]3 years ago

4 0

Answer:

what do you want to find in the first place?

Step-by-step explanation:

your are not telling us what you want us to explain its like if I showed you a candy and then I told you explain. Explain what? how the candy is made? what type of candy it is? how it tastes? it's size? it's color? you have to be more precise

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Plz help me plz f(89) = -481.4 and f(126) = -677.5

yaroslaw [1]

Answer:do u have the answer

Step-by-step explanation:

4 0

3 years ago

Reptile [31]

Answer:

The real zeros of f(x) are x = 0.3 and x = -3.3.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this problem, we have that:

$f(x) = x^{2} + 3x - 1$

$a = 1, b = 3, c = -1$

$\bigtriangleup = 3^{2} - 4*1*(-1) = 13$

$x_{1} = \frac{-3 + \sqrt{13}}{2*1} = 0.3$

$x_{2} = \frac{-3 - \sqrt{13}}{2*1} = -3.3$

The real zeros of f(x) are x = 0.3 and x = -3.3.

7 0

3 years ago

Susanna has played the piano for s years. Patrick has played the piano for 4 more than twice the number of years that Susanna ha

scoray [572]

S=Years Susanna has played the piano
p=Years Patrick has played the piano

The expression for this question would be s(2)+4=p

Hope this helps! :)

6 0

3 years ago

Read 2 more answers

A 100 - foot fence is used to enclose a rectangular land plot. If the area of the land plot is 456 square feet, which equation c

quester [9]

Answer:

$x^2-50x+456=0$

Step-by-step explanation:

GIVEN: A $100\text{ foot}$ fence is used to enclose a rectangular land plot. If the area of the land plot is $456\text{ feet}^2$ .

TO FIND: equation to determine the length $x$ of the land plot.

SOLUTION:

total length of fence $=100\text{ foot}$

let the width of land plot be $y$

perimeter of plot $=2(x+y)=100$

$x+y=50$

area of rectangular plot $=\text{length}\times\text{breadth}$

$xy=456$

$y=\frac{456}{x}$

putting value of $y$

$x+\frac{456}{x}=50$

$x^2-50x+456=0$

Hence required equation to get length $x$ of land plot is $x^2-50x+456=0$

on solving

$x=38,12$

possible length of land plot is $38\text{ foot}$ and $12\text{ foot}$

6 0

3 years ago

Atiker wants to uile a rectangular wall which reasures Ambuy 2.5 m,

ruslelena [56]

Answer:

Step-by-step explanation:

There are 100 cm in 1 meter. the dimensions are 400cm by 250cm. depending on which way you turn them, they will fit better. if you take 400 divided by 16, you will have a row of 25 wide and if you divide 250 by 10, you will have a length of 25. you now have 25 rows of 25. 25x25 is 625 tiles.

Hope this helps

7 0

3 years ago

Help please with explanation​

Help please with explanation