All categories

2 years ago

I really need help on this geometry question, please, and thank you.

Mathematics

1 answer:

photoshop1234 [79]2 years ago

7 0

Answer:

250

Step-by-step explanation:

you have to use the fact that the big triangle and the small triangle are similar and write the proportions

$\frac{125}{10} =\frac{AB}{10}$ we took half of the side because of ΔABD and ΔBD..

AB= (125*10)/10=125

is AB =125 then AC is duble AC= 2*125=250

You might be interested in

Solve 2x2 + 20x = −38. (1 point)

RoseWind [281]

Answer:

The solutions are $x=-5+\sqrt{6}$ and $x=-5-\sqrt{6}$

Step-by-step explanation:

we have

$2x^{2} +20x=-38$

Divide by $2$ both sides

$x^{2} +10x=-19$ ------> $x^{2} +10x+19=0$

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2} +10x+19=0$

$a=1\\b=10\\c=19$

substitute

$x=\frac{-10(+/-)\sqrt{10^{2}-4(1)(19)}}{2(1)}$

$x=\frac{-10(+/-)\sqrt{100-76}}{2}$

$x=\frac{-10(+/-)\sqrt{24}}{2}$

$x=\frac{-10(+/-)2\sqrt{6}}{2}$

$x1=\frac{-10(+)2\sqrt{6}}{2}=-5+\sqrt{6}$

$x2=\frac{-10(-)2\sqrt{6}}{2}=-5-\sqrt{6}$

8 0

3 years ago

Read 2 more answers

Please help me with this question!

MakcuM [25]

x=20(y−3)2−1

5 0

3 years ago

Is y^2=4x-7 a linear

Vinvika [58]

Answer: it's a linear equation

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

A000 1 -1-1-1-1 AAA A 1 1 1 1 1 -1 (-1)(-1

cestrela7 [59]

The answer is -12!!!

3 0

3 years ago

Read 2 more answers

300g of bananas cost £1.80. how much does 1kg cost?

amm1812

Maybe try dividing by 300 and timesing by 1000?

4 0

3 years ago

Read 2 more answers