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mariarad [96]
2 years ago
9

Can someone please help me with this!!!!

Mathematics
2 answers:
balandron [24]2 years ago
7 0
You can use the similarity approach of these two triangles CBD and CAE

as a result:
\frac{BD}{AE} = \frac{10}{2x} = \frac{CD}{CE} = \frac{3x}{?}

so:
? = 6x^2 / 10 = 0.6 x^2

and the fact of:

"The segment connecting the midpoints of two sides of a triangle is parallel to the third side and equals its half length"

so:BD = 0.5 AE        10 = 0.5 * 2x        >>> x= 10


Back to:
? =0.6 x^2 = 0.6 * 10^2 = 0.6 * 100 = 60



A

Hope that helps
rjkz [21]2 years ago
3 0
In a triangle the midline joining the midpoints of two sides is parallel to the third side and half as long ⇒

AE = BD*2 = 10*2 = 20
also AE = 2x (given) ⇒
2x = 20
x = 20/2
x = 10

CD = 3x = 3*10 = 30

BD is the midsegment of ΔACE ⇒ ΔBCD <span>∼ </span>ΔACE therefore:

\frac{BD}{CD}= \frac{AE}{CE} \ \ \ \to \ \ \  CE= \frac{CD*AE}{BD}= \frac{30*20}{10}=60

Answer: 60
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please help me if you can if your going to say I'm cheating i don't care cause i know I'm not thanks!!​
Colt1911 [192]

Answer:

13.9 sorry if I'm wrong just trying to help.

Step-by-step explanation:

first plug in your numbers

a*2+ b*2= c*2

12*12= 144

7*7=49

144+49= 193

square root of 193: 13.89244399

rounded to nearest tenth is 13.9

6 0
3 years ago
The endpoints of GH are G(3,3) and H(-7,7).<br> Find the coordinates of the midpoint M.
sesenic [268]

Step-by-step explanation:

Hey there!!

You can simply use midpoint formulae to find midpoint of the coordinates.

Here, Given that;

G(3,3) and H(-7,7).

Using midpoint formulae,

midpoint \: of \: gh =  (\frac{x1 + x2}{2}  ,\frac{y1 + y2}{2})

midpoint \: of \: gh =  (\frac{3 - 7}{2}  ,\frac{3 + 7}{2})

After simplifying it we get,

= (-2,5).

Therefore, midpoint of GH is M(-2,5).

<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

3 0
2 years ago
A family ordered some candy bars and bags of chips for snacking. The number oof candy bars was twice as much as the number of ba
nikdorinn [45]

Answer:

The family bought 2 bags of chips

Step-by-step explanation:

Let the number of chips bags be  =   x

The number of candy bars  =  twice as much as the number of bags of chip

The number of candy bars  =  2x

The total cost  spent is  = $5.50

Therefore cost of all the chips bags + candy bars = 5.50

2x +  x = 5.50

3x = 5.50

x = \frac{5.50}{3}

x =  1.83

x = 2 (approx)

Thus the number of chips is 2 and the candy bars is 2(2) = 4 bags

4 0
2 years ago
Plz plz Plz help!
likoan [24]

Answer:

$16,666.67

Step-by-step explanation:

PMT= PV*i Where PMT is the withdrawals ,PV is present value and i is the dicounting rate

PMT = $1,000.00

PV= ?

i = 6%

hence  $1,000 = PV*6%

PV=1,000/6%

PV = 16,666.67

4 0
2 years ago
Your friend rolled a number cube and got number 5. On his next turn he says he won’t be able to get another 5 because his chance
Sophie [7]

Answer:

he can still get a 5 but he is equally likely to get any other number 1 to 6

Step-by-step explanation:

he has a 1/6 chance of rolling 5 the first turn and it becomes more and more rare to roll lots of 5s in a row

1/6

1/36

1/216

etc

each time the denominator is multiplied by 6 because it is less likely he will roll a 5 so many times in a row

8 0
2 years ago
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