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Eva8 [605]
3 years ago
9

What is the area of this triangle? A=bh2 54 cm² 90 cm² 108 m² 216 m² Right triangle with height labeled 12 centimeters, base lab

eled 9 centimeters, and the third side labeled 15 centimeters.

Mathematics
1 answer:
inessss [21]3 years ago
7 0

Answer:54 idk though i forgot how to do this lol

Step-by-step explanation:

You might be interested in
50 + 34 x 6 - 23. ​
dolphi86 [110]

Answer: 231

Step-by-step explanation: We can use PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction) in order. Multiply 34 and 6: 204.

50 + 204 - 23. Add 50 and 204: 254. Subtract 254 and 23: 231.

6 0
3 years ago
ΔABC is dilated by a scale factor of 0.25 with the origin as the center of dilation, resulting in the image ΔA′B′C′. If A = (-1,
AfilCa [17]

Answer:

  c.  d = 5

Step-by-step explanation:

The difference in coordinates B and C is (14, 17) -(2, 1) = (12, 16). When the figure is scaled by 0.25, that difference becomes ...

  0.25(12, 16) = (3, 4)

The length of a line segment with those coordinate differences is ...

  d = √(3² +4²) = √25 = 5 . . . . matches selection c.

3 0
3 years ago
A car is merging onto a freeway (beginning at rest), accelerating at a constant rate of 10ft/sec2. How long does it take to reac
masha68 [24]

Answer:

<h2>10.3seconds</h2>

Step-by-step explanation:

Step one:

given data

acceleration,a= 10ft/sec^2

final velocity v= 70mph

first, let is convert mph to ft/sec

1mph is 1.46667 ft/sec

70 mph is x

cross multiply we have

x= 102.7ft/s

Step two:

we are using the first equation of motion

v=u+at

initial velocity u= 0m/s

102.7=0+10*t

102.7=10t

divide both sides by 10

t=10.3seconds

5 0
3 years ago
PLEASE HELP QUICK, GIVING BRAINLIEST
ella [17]

This is classic Pythagorean solving:

Side^2 + Side^2 = Hypotenuse^2


The hypotenuse is the longest side of a triangle, and it connects the leg and the base usually. In this triangle, 18 is the hypotenuse -- so since we are solving for the unknown side, the equation is:


a^2 + 5.7^2 = 18^2 -- now solve

a^2 = 18^2 - 5.7^2

a^2 = 291.51

a = sqrt(291.51)

a = 17.07 -- because height is the square root of the difference of the squares of 18 and 5.7


The answer is choice B.

8 0
3 years ago
You used 5 cups of flour to bake 80 cookies. How many cups of flour do you need if you bake 144 cookies?
Veronika [31]

Answer:

9 cups

Step-by-step explanation:

We can write a ratio to solve

5 cups                     x cups

------------            = ----------------

80 cookies            144 cookies

Using cross products

5 * 144 = 80x

720 = 80x

Divide by 80

720/80 = 80x/80

9=x

6 0
2 years ago
Read 2 more answers
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