3 years ago

Please help im stuck

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

6 0

Answer:

x=40

Step-by-step explanation:

Area of a triangle = B*H/2

First, you have to find the relationship between the large triangle and the smaller triangle. 72 is three times as much as 24, so to find x, you would have to find the relationship between 120 and x. So, 120/3 = 40.

You might be interested in

Factor 7(x − 3)2 − 4(x − 3) − 3 completely.

Nezavi [6.7K]

$7(x-3)^2-4(x-3)-3\\\\substitute\ t=x-3,\ then\ we\ have\\\\7t^2-4t-3\\\\a=7;\ b=-4;\ c=-3\\\\\Delta=b^2-4ac\\\\\Delta=(-4)^2-4\cdot7\cdot(-3)=16+84=100\\\\t_1=\dfrac{-b-\sqrt\Delta}{2a};\ t_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{100}=10\\\\t_1=\dfrac{-(-4)-10}{2\cdot7}=\dfrac{4-10}{14}=\dfrac{-6}{14}=-\dfrac{3}{7}\\\\t_2=\dfrac{-(-4)+10}{2\cdot7}=\dfrac{4+10}{14}=\dfrac{14}{14}=1\\\\7t^2-4t-3=7\left(t+\dfrac{3}{7}\right)(t-1)=(7t+3)(t-1)\\\\=(7(x-3)+3)(x-3-1)=(7x-21+3)(x-4)\\\\=\boxed{(7x-18)(x-4)}$

7 0

3 years ago

Pleaseee someone helppp mee<br><br>

zheka24 [161]

Answer:

gftfyuoppoiu7644wqqettuiopouytrewesdffhjklju

Step-by-step explanation:

gffggghhhjjklliigg

6 0

2 years ago

Read 2 more answers

A(r) is a function that gives the area of ta circle with the radius r. It can be written in an equation form as A(r)=3.14r^2. wh

notsponge [240]

A(r)=3.14r^2, when r=5

A(5)=3.14(5^2)

A(5)=3.14(25)

A(5)=78.5 u^2

4 0

3 years ago

Katie wants to buy a scooter that usually sells for $95.99. The store is having a sale and all merchandise is discounted by 20%

s2008m [1.1K]

Answer:

$82.55

Step-by-step explanation:

95.99/100=0.9599

0.9599x80=76.792

76.792/100=0.76792

0.76792x7.5=5.7594

76.792+5.7594=82.55

7 0

3 years ago

Use the order of operations to simplify: 9 ÷ 3 + 4 × 6

Tasya [4]

Answer:

Step-by-step explanation:

First is 9 / 3 which is 3 and then 4 x 6 which is 24 then 24 + 3 = 27

3 0

3 years ago

Read 2 more answers