Question 3 of 10

Solve this equation: -88=5y-13

nadya68 [22]

Answer:

y=-15

Step-by-step explanation:

4 0

3 years ago

A Student with N600 pocket money was spent on the following; Book N50, Pen N80, Maths Set N270, Bag N150, Food N50; the angles t

Vera_Pavlovna [14]

<span>Total pocket money: N600 Spent as follows: Books N50 Pen N80 Maths set N270 Bag N150 Food N50 To find: Angles that pen and food represent on pie chart. Solution: Pie is made on circle, and sum of angles of a circle is 360Â°. Angle that pen represent = (80/600)*360Â° = 48Â° Angle that food represent = (50/600)*360Â° = 30Â°</span>

3 0

3 years ago

Booneville Theater sold 1,330 tickets to Shakespearean plays last season. This season, the

Viefleur [7K]

Answer:

1862 tickets.

Step-by-step explanation:

1330 increase 40% =

1330 × (1 + 40%) = 1330 × (1 + 0.4) = 1862

3 0

3 years ago

The area of rectangular field is 1440 sq meters and perimeter is 152 metre. Out of length or breadth which one is to be decrease

Arturiano [62]

Answer:

If Length is decreased by 10% then it would become a square.

Step-by-step explanation:

Given:

Area of Rectangular field = 1440 sq. m

Perimeter = 152 m.

We need to find which one needs to be decreased by what percentage to make it a square.

Solution:

Let length be denoted by 'l'.

Also Let width be denoted by 'w'.

Now we know that Area of rectangular field is given by Length times width.

framing in equation form we get;

$l\times w = 1440 \ \ \ \ equation\ 1$

Also we know that Perimeter of rectangular field is given by 2 times sum of Length and width.

framing in equation form we get;

$2(l+w) =152\\\\l+w =\frac{152}{2}\\\\l+w=76\\\\l=76-w \ \ \ \ equation \ 2$

Now Substituting equation 2 in equation 1 we get;

$l\times w =1440\\\\(76-w)w=1440\\\\76w-w^2=1440\\\\w^2-76w+1440 =0$

Now we will find the root by factorizing the same we get;

$w^2-36w-40w+1440=0\\\\w(w-36)-40(w-36)=0\\\\(w-36)(w-40) =0 \\$

Now solving for each to find the value of 'w' we get;

$w-36 =0\\\\w=36\\\\also \\\\w-40=0\\\\w=40$

So We can say that;

Width = 36 m and Length = 40 m

Now we need to find out of length or breadth which one is to be decreased by what percentage to make it a square.

We know that square has all sides same.

So from the data we found we can say that if length is decreased by 4 then length and breadth(width) both will be equal.

So to find percentage decreased we will divide length to be decreased by total length and then multiply by 100.

framing in equation form we get;

percentage decreased = $\frac{4}{40}\times 100 = 10\%$

Hence If Length is decreased by 10% then it would become a square.

6 0

3 years ago

Pleaseee will make brainlist :(

Vlada [557]

Answer:

x^2 -20x + 100

Step-by-step explanation:

How this works is that you multiply each number by every other number, so.

(x+a)(x+b) so you do x times x since the parenthesis multiplies them together. Then you do x times b.

Then you do a times x since a is the next number in the first pair. then you do a times b.

(* is the sign for multiplication for the sake of simplifying it and to be easier than doing something like x x x where you are multiplying x together with x.)

So in the expression (x + a)(x + b) you are basically doing

x * x + x * b + a * x + a * b

In your case, a is = to -10 and b is equal to -10

So your expression would be

x * x + x * -10 + -10 * x + -10 * -10

so x times x is x^2 and x times -10 is -10x You are doing -10 * x twice so it is -20x and -10 times -10 is 100

So the final equation would be x^2 plus -20x plus 100 or

x^2 + (-20x) + 100

which is

x^2 -20x + 100

Hope this helps!

4 0

2 years ago