All categories

3 years ago

A rectangle has a length of 9 meters and a height of 6 meters what is the area?

Mathematics

1 answer:

SCORPION-xisa [38]3 years ago

8 0

Answer:

54 is the area

Step-by-step explanation:

you do 6 x 9=54

You might be interested in

Given f(x)= 3x^2-5x+2 and g(x)= 4x- 6, find f(x)+g(x).

kirill115 [55]

f(x) = 3x² - 5x + 2

g(x) = 4x - 6

f(x) + g(x)

(3x²- 5x + 2) + (4x - 6)

3x² - 5x + 2 + 4x - 6

3x²- 5x + 4x + 2 - 6

3x² - x - 4

8 0

3 years ago

Find the area of the given triangle to the nearest square unit. Angle a= 30 degrees, b=10, angle B=45 degrees

storchak [24]

Answer:

$A=34\ units^2$

Step-by-step explanation:

Suppose we have a general triangle like the one shown in the figure.

We know the angle A, the angle B and the length b.

$A = 30\°\\\\B = 45\°\\\\b = 10$

By definition I know that the sum of the internal angles of a triangle is always equal to 180 °.

$A + B + C = 180\\\\30 + 45 + C = 180$

We solve the equation and thus we find the angle C.

$C = 180 - 30-45\\\\C = 105$

We already know the three triangle angles.

Now we use the sine theorem to calculate the sides c and a.

The sine theorem says that:

$\frac{sin(A)}{a}=\frac{sin(B)}{b}=\frac{sin(C)}{c}$

Then

$\frac{sin(30)}{a}=\frac{sin(45)}{10}$

$\frac{sin(30)}{\frac{sin(45)}{10}}=a$

$a=7.071$

Also

$\frac{sin(105)}{c}=\frac{sin(45)}{10}$

$\frac{sin(105)}{\frac{sin(45)}{10}}=c$

$c=13.660$

Finally, we use the Heron formula to calculate the triangle area

$A=\sqrt{s(s-a)(s-b)(s-c)}$

Where s is:

$s=\frac{a+b+c}{2}$

Therefore

$s=\frac{7.071+10+13.660}{2}$

$s=15.37$

$A=\sqrt{15.37(15.37-7.071)(15.37-10)(15.37-13.66)}$

$A=34\ units^2$

3 0

2 years ago

Use the grouping method to factor this polynomial completely.

Alexxandr [17]

Answer:

The answer is A. (4x²+3)(x+2)

Step-by-step explanation:

If u multiply (4x²+3) by (x+2), u get 4x^3+8x^2+3x+6

4 0

1 year ago

can someone please send me a xbox live gift card plz :3 i cant play anymore because my dad dont let me buy it :( so can you

Olenka [21]

Answer:

This is a website to ask people for help with their school work. Not to beg others for things cause of your problems.

Step-by-step explanation:

We all know its just that you've spent all your money on Fortnite and you want more on there.

7 0

2 years ago

Correctly order the proceed for solving for x using the algebraic properties of equality.

Snezhnost [94]

Answer:

Step-by-step explanation:

Step 1: Subtract 9

50.24 = 3.14x²

Step 2: Divide by 3.14

x² = 16

Step 3: Square root both sides

x = ±4

6 0

2 years ago