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3 years ago

Help pls..................

Mathematics

1 answer:

Triss [41]3 years ago

5 0

Answer:

Area = 152ft²

Step-by-step explanation:

Simpifly:

A = 13(13-6) + 9(13-6)

A = 13(7) + 9(7)

A = 22(7)

A = 20(7)+2(7)

A = 140 + 14

A = 152

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Estimate the square root of 83 to the nearest whole number.

sleet_krkn [62]

Nothing can go into 83 so of you square root it you will get a decimal so the nearest whole number You would get is 9 because 9*9=81 and that's the closet that you will get to 83

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3 years ago

All of the students in sixth grade either purchased their lunch or brought their lunch from home on Monday.

Nat2105 [25]

Answer:

250

Step-by-step explanation:

1. 190 students is the number that is 100-24 = 76% of the 6th grade population

0.76x = 190

x = (190/.76) = <u>250</u>

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3 years ago

Read 2 more answers

your brother is 1.3 your age. your sister is 6 years older tahn your brother.Your sister is 10 years old. Write and solve a equa

Papessa [141]

Answer:

My age is 12 years.

Step-by-step explanation:

Given:

Sister's age = 10 years

Let my age be x.

Now according to question;

my brother's age is 1/3 of my age

So brother's age = $\frac{1}{3}x$

Also according to question;

my sister is 6 years older than my brother;

Sister's age = $6+\frac{1}{3}x$

Also given Sister's age = 10 years

hence equation to find my age will be expressed as below;

$6+\frac{1}{3}x = 10\\\\\frac{1}{3}x = 10-6\\\\\frac{1}{3}x = 4\\\\\therefore x = 4\times3 = 12$

Brothers age = $\frac{1}{3}x=\frac{1}{3}\times12=4$

Hence my age is 12 years.

4 0

3 years ago

Is 26 a perfect square

Leno4ka [110]

No because you can see nothing will fit in the number but the a n s we r is no

4 0

4 years ago

The area of a rectangle is 24 square centimeters. The length (X), in centimeters of the rectangle is given by the equation x2 +

Allisa [31]

The length of the rectangle is 3 cm

<h3>Applications of Quadratic equations</h3>

From the question, we are to determine the value of the length of the rectangle

To find the length of the rectangle, we will determine the value of x in the given equation

The given equation is

$x^{2} + 5x =24$

This can be written as

$x^{2} +5x -24 =0$

Factorizing

$x^{2} +8x - 3x -24 = 0$

$x(x+8) -3(x+8)=0$

$(x-3)(x+8)=0$

Then,

$x-3 = 0$ OR $x + 8 = 0$

x = 3 OR x = -8

Since, the length of the rectangle cannot be negative, the value of x is 3.

Hence, the length of the rectangle is 3 cm.

Learn more on solving quadratic equations here: brainly.com/question/8649555

8 0

2 years ago