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2 years ago

I need help with finding the area of the following triangles

Mathematics

1 answer:

svetlana [45]2 years ago

5 0

1) 1/2 x (4)(3) = 1/2 x 12=6in2
2) 1/2 x (12)(6) = 1/2 x 36=18cm2
3) 1/2 x (9)(7) = 1/2 x 63=31.5ft2
4) 1/2 x (12)(12) = 1/2 x 144= 72cm2
5) 1/2 x (3)(2) = 1/2 x 6=3ft2
6) 1/2 x (20)(16) = 1/2 x 320=160cm2
7) 1/2 x (7)(15) = 1/2 x 105=52.5m2
8) 1/2 x (9)(9) = 1/2 x 81=40.5in2
9) 1/2 x (2)(2) = 1/2 x 4=2ft2
10) 1/2 x (6)(4) = 1/2 x 24=12ft2
11) 1/2 x (15)(10) = 1/2 x 150=75ft2
12) 1/2 x (3)(10) = 1/2 x 30=15m2

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Use the quadratic formula to determine the exact solutions to the equation. 2x²−5x+1=0

SashulF [63]

Answer: the answer is......

X=1 and X=2 or if you want the other way its

X=2.28077640640442 X=0.21922359359585

Step-by-step explanation:

Trust me its right

7 0

2 years ago

The perimeter of a triangle with two equal sides is 50 cm. If its base were lengthened by 3 cm and each leg were shortened by 4

Nataly [62]

Answer:

Base of the original triangle is 12 cm.

Step-by-step explanation:

Let base of triangle be x

two equal legs of triangles by y

therefore perimeter of triangle

x+y+y = 50 or x+2y =50

according to the question

if base is x+3 and leg is y-4

then both are equal

that is x+3 = y-4

y-x = 7 or y =x+7

x+2y =50

x+2(x+7) = 50

x+2x +14 =50

3x +14 =50

3x = 50 -14

3x = 36

x = 12

therefore base of the original triangle is 12 cm

6 0

3 years ago

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Anni [7]

1/2!!! hope this helps!

3 0

3 years ago

Read 2 more answers

An angle is 26.2° more than its complementary angle what is the measure of each angle

Mila [183]

Answer:

58.1 and 31.9 degrees

Step-by-step explanation:

x + other angle = 90 because complementary angles add up to 90

x = the angle

x = 26.2 more than the other angle

subtract 26.2 from both sides

x - 26.2 = other angle

x + other angle = 90

plug x - 26.2 for other angle

x + (x-26.2) = 90

2x - 26.2 = 90

add 26.2 to both sides to isolate the variable and its coefficient

2x = 116.2

divide both sides by 2 to find x

x = 58.1

other angle = x - 26.2 = 31.9

7 0

2 years ago

IT'S A TIME SENSITIVE EMERGENCY!!!

kap26 [50]

Complete question is missing, so i have attached it.

Answer:

Yes, they are all correct

Step-by-step explanation:

From the attached image, we see that the sign is showing;

Parking lot: ¾ miles

Summit: 1½ miles

Summit distance can also be expressed as an improper fraction = 3/2 miles

Now, since they started hiking from the park to the summit, it means that they had moved ¾ mile from the parking lot and had 3/2 miles left to get to the summit.

Thus, total distance from parking lot to summit = ¾ + 3/2 = 9/4 miles

Now, let's analyze each of their statements;

Mai said they are a third of their way there.

They had covered 3/4 mile and the total distance is 9/4 miles.

Thus, fraction of total distance covered is;

9/4 ÷ 3/4 = 1/3.

So, Mai is correct

Clare said they have to go twice as far as they had already gone.

They had covered 3/4 miles.

Therefore, twice this = 2 × 3/4 = 6/4 = 3/2 which is same as the sign distance left to the summit.

Thus, Clare is correct

Tyler said that the total hike is three times as long as what we have already gone.

They had gone 3/4 miles

3 times this = 3 × 3/4 = 9/4 miles.

This tallies with the total distance calculated earlier.

Thus, they are all correct

8 0

2 years ago