Given, the length of one of diagonal of quadrilateral is 10 cm and perpendicular drawn from the opposite vertices to this diagonal are the length of 2.8 cm and 4.2 cm.

A diagonal divided a quadrilateral into two triangle.

Therefore the area of the quadrilateral

= sum of the area of the triangles

$=(\frac{1}{2}\times 10\times 2.8+ \frac{1}{2}\times 10\times 4.2)$ cm² [ area of a triangle $= \frac{1}{2}\times base\times height$ ]

=35 cm²

3 0

3 years ago

Iliana is painting a picture. She has green, red, yellow, purple, orange, and blue paint. She wants her painting to have four di

erma4kov [3.2K]

Answer: i think it's the last option

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The cost of two tables and three chairs is $705. If the table costs $40 more than the chair,find the cost of the table and the c

Nadusha1986 [10]

Answer:

the cost of the table is $\$165$

the cost of the chair is $\$125$

Step-by-step explanation:

Let

x-----> the cost of the table

y----> the cost of the chair

we know that

$2x+3y=705$ -----> equation A

$x=y+40$ -----> equation B

substitute equation B in equation A

$2(y+40)+3y=705$

$2y+80+3y=705$

$5y=705-80$

$y=625/5$

$y=\$125$

Find the value of x

$x=y+40$ ----> $x=125+40=\$165$

8 0

3 years ago

The expression −50x+100 represents the balance, in dollars, of a bank account after x months.

kondor19780726 [428]

Basically get two slopes -50(1)+100 will get you 1,50 (1 is x and 50 is y since its the answer)
-50(0)+100 (0,100) Y₂-Y₁/X₂-X₁ 50-100/1-0
Rate of change per month = -$50

7 0

3 years ago

Read 2 more answers