All categories

3 years ago

I need help please help

Mathematics

1 answer:

goblinko [34]3 years ago

4 0

Answer:

224 m^2

Step-by-step explanation:

Assuming the 2 triangles are the same area.

The area of a triangle is (1/2)bh, and since there are 2 triangles we can write it like this: 2((1/2)bh) = bh

Now, we can substitute the values: 12 x 8 = 96

For the rectangles, 2 of the rectangles have area of 10 x 4 = 40. So, 80 since there are 2. Then the middle rectangle has length 12, so 12 x 4 = 48.

We can add the values together now to get 96 + 80 + 48 = 224

So, 224 m^2.

You might be interested in

2. 7x = 5 + 5x solve

Tresset [83]

Answer:

x = 2 $\frac{1}{2}$ or $\frac{5}{2}$

Step-by-step explanation:

Subtract 5x from both sides. This leaves us with 2x = 5. Now divide both sides by 2 to isolate x. If you want an improper fraction you can stop at x = $\frac{5}{2}$ . If you want a mixed number you will have x = 2 $\frac{1}{2}$ .

Hope this helped! Please give Brainliest.

4 0

3 years ago

-2x+4y= 12 3x+7y= 18 last one greatly appreciated

LenaWriter [7]

Value of x is $\frac{-6}{13}\\$ and y is $\frac{36}{13}$

Solution set is ( $\frac{-6}{13}\\$ , $\frac{36}{13}$ )

Step-by-step explanation:

We need to solve the system of equations given.

$-2x+4y=12\\3x+7y= 18$

Solving

Let:

$-2x+4y=12\,\,eq(1)\\3x+7y=18\,\,eq(2)$

Multiply eq(1) by 3 and eq(2) by 2 and add both

$-6x+12y=36\\6x+14y=36\\-------\\26y=72\\y=\frac{72}{26}\\y=\frac{36}{13}$

Putting value of y in equation 1

$-2x+4y=12\\-2x+4(\frac{36}{13})=12\\-2x+\frac{144}{13}=12\\-2x=12-\frac{144}{13}\\-2x=\frac{12*13-144}{13}\\-2x=\frac{12}{13}\\x=\frac{-6}{13}\\$

So, value of x is $\frac{-6}{13}\\$ and y is $\frac{36}{13}$

Solution set is ( $\frac{-6}{13}\\$ , $\frac{36}{13}$ )

Keywords: System of equations

Learn more about system of equations at:

#learnwithBrainly

7 0

4 years ago

Write -a^3b^6 and -27x^6b^9 as cubes of a monomial. -a^3b^6=( ) ^3 -27x^6b^9=( )^3

Brrunno [24]

Answer:

I'm sorry I don't know the first one but the second one is (-3x^2b^3)^3

Step-by-step explanation:

7 0

3 years ago

I need help please!

vodomira [7]

x^2 + 1 = 0
x^2 = -1
x =
x = i
:
(x^3 + 2x) = 0
Factor out x
x(x^2 + 2) = 0
x = 0

3 0

3 years ago

Read 2 more answers

George and Cameron went on a bicycle trip.They took a bus to the starting point, and then biked the rest. They traveled 275 km i

EastWind [94]

In this type of problem, we would want to use a system of linear equations.

First, we need to find our equations. We know that the two boys traveled 275 km in total, and since x and y count the distance traveled (just in different modes of travel), we can write: x + y = 275.

Next, the problem says that they biked 55 km more than they bussed. So, x = y + 55.

Now that we have two equations to solve for two variables, we can lay them out next to each other:

x + y = 275

x = y + 55

We see that we can substitute x in the first equation with y + 55. This gives us

(y + 55) + y = 275

We solve for y and get y = 110 km by bus. But, we want to know how far they traveled by bike. So, since x = y + 55 and y = 110, we can solve for x by doing 110 + 55 = 165 km by bike.

The answer is 165 kilometers.

4 0

3 years ago