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skad [1K]
3 years ago
10

Question 5 of 10

Mathematics
1 answer:
Marysya12 [62]3 years ago
7 0

Answer:

D

Step-by-step explanation:

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Find the area of a triangle with legs that are 9mm 6mm and 12mm
Sidana [21]

Here we are given the three sides of the triangle.

So we have Heron's formula to find its area.

Heron's formula is given by :

A= \sqrt{S(S-A)(S-B)(S-C)}

where A, B and C are sides of triangle and S is semi perimeter which is given by,

S= \frac{A+B+C}{2}

plugging values of A, B and C to find S

S= \frac{9+6+12}{2}

S=13.5

Now plugging values of A, B , C and S in Heron's formula

A= \sqrt{13.5(13.5-9)(13.5-6)(13.5-12)}

A=26.14 mm²

Answer: Area of triangle is 26.14 mm².



6 0
3 years ago
Solve for W!<br> W - 2.76 = 6.7
MariettaO [177]
W - 2.76 = 6.7

isolate the W by adding 2.76 to both sides of the equal sign

W - 2.76 (+2.76) = 6.7 (+2.76)

W = 6.7 + 2.76

W = 9.46

9.46 is your answer

hope this helps
4 0
3 years ago
Read 2 more answers
-4b - 5 + 2b =10. Can I have some help solving this.
kramer

Answer:

-7.5

Step-by-step explanation:

Simplify

-4b - 5 + 2b = 10

-2b - 5 = 10

-2b = 15

b = -7.5

5 0
3 years ago
Read 2 more answers
Lasso SelectInsert SpaceEditUnit 1 - Part 1 - Test ReviewWriting and Modeling with Equations1) A store sells ice cream with asso
HACTEHA [7]

1

(a) The total cost, C, is given by:

C(t)=3+0.5t

b) With 3 ounces of toppings, we have

t=3C(3)=3+0.5(3)=3+1.5=4.5

Hence Evan's ice cream would cost $4.50

6 0
11 months ago
Factor 3y^2 - 4y. plzzzzzz
Lisa [10]

Answer:

y(3y - 4)

Step-by-step explanation:

3y^{2} -4y

Both have y.

Factor y out of 3y^{2} -4y

y(3y-4)

7 0
3 years ago
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