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3 years ago

Quadrilateral ABCD has diagonals that are congruent and perpendicular to each other. What classification can be given to ABCD?

Mathematics

1 answer:

Mariana [72]3 years ago

8 0

The answer is a rhombus

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I need the length of c in the triangle shown. plz i need help badly.

lesya [120]

Answer:

c=10

Step-by-step explanation:

6^2+8^2=c^2

36+64=c^2

100=c^2

10=c

8 0

3 years ago

Two trains leave stations 306 miles apart at the same time traveling toward each other one is traveling at 90 mph the other at 8

Sergeu [11.5K]

Answer:

They will meet in 1.8 hours.

Step-by-step explanation:

Given that, distance between trains = 306 miles

Let they take time $'t'$ to meet each other.

Speed of first train = 90 mph

Speed of second train = 80 mph

Let distance traveled by first train = $D_1$ miles

Formula for distance:

$Distance = Speed \times Time$

Distance traveled by first train, $D_1 = 90t$

Let distance traveled by first train = $D_2$ miles

Formula for distance:

$Distance = Speed \times Time$

Distance traveled by first train, $D_2 = 80t$

Total distance traveled is 306 miles.

i.e.

$D_1+D_2=306\\\Rightarrow 90t +80t=306\\\Rightarrow 170t=306\\\Rightarrow t =\dfrac{306}{170}\\\Rightarrow \bold{t=1.8\ hr}$

They will meet in 1.8 hours.

3 0

3 years ago

-2x

mars1129 [50]

y=0

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3 years ago

Sarah tosses a coin 200 times.The coin landed 108 times on heads and 92 times on tails. Using her results, estimate the prob

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6 0

3 years ago

Read 2 more answers

You have invested $12,000 into two different companies company 1 earns you 6% on your investment each year and Company 2 earns y

vovikov84 [41]

The correct questions says 5% each year for Company 2.

The amount invested in companies A and B are; $10,000 and $2000 respectively.

<h3>Percentages on Investment</h3>

Let the amount in Company 1 be; x

Let the amount in Company 2 be; y

Hence, we have the equation;

x + y = 12,000

Additionally, 6% is earned on company 1 and 50% on company 2.

Therefore, we have;

0.06x + 0.05y = 700

6x + 5y = 70000

by solving the equation simultaneously;

6(12000 -y) + 5y = 70000

72000 - 6y + 5y = 70000

y = $2000

x = $12000 - $2000

x = 10000

x = $10,000

Read more on simultaneous equations;

brainly.com/question/16863577

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3 years ago