sbach732 sbach732

14-06-2020
Mathematics

contestada

Need help with question a

Need help with question a class=

Respuesta :

mhanifa mhanifa

14-06-2020

Answer:

1.8 cm

6.3 cm²

Step-by-step explanation:

AC⊥BC

BD=BC=x

(x+5)²+x²=7²
x²+10x+25+x²=49
2x²+10x- 24=0
x²+5x-12=0
x=1.8

BC= 1.8 cm

Area of ABC= 1/2*1.8*7= 6.3 cm²

Answer Link

Otras preguntas

A metal surface emits photoelectrons when illuminated by green light. This surface must also emit photoeléctrons when illuminated by blue light a) True b) False

A 1,970 g mass is hung on a "massless" vertical spring with aspring constant of k=330(N)/(m). The mass is pulled down and released such that it undergoessimple

What hypothesis can be formed about financial strain as far as lowering crime rates in Virginia?

When buying a house and letting the seller rent it back how do you ensure them getting out by agreed upon date ?

What were the poet/musicians in the south of France during the twelfth and thirteenth centuries called?

what is the sqaure root of 448

What section within the Windows 10 System Information tool allows you to view details about your operating system and applications? A) System Summary B) Compone

A paragraph of EIGHT lines (A description of the location of the area you have chosen with historical and geographical scope of the problem) topic is local cli

Dose the point (512, 512) satisfy the equation y = x? Yes or no

Which of the following structures will genes contain the information to code for? a) Proteinsb) Lipidsc) Carbohydratesd) Nucleic acids