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egoroff_w [7]
4 years ago
13

Need help with this problem explain pls

Mathematics
1 answer:
Usimov [2.4K]4 years ago
6 0
All sides of an equilateral triangle are equal, so all three sides are 9 cm.
To find h, use the pythagorean theorem. This requires use of only one right triangle, where we use b as our h.

a^2+b^2=c^2
(4.5)^2+b^2=(9)^2
(20.25)+b^2=(81)
b^2=(81/20.25) or 4
square root both sides
b=2
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Please solve this ASAP for 30 points
e-lub [12.9K]

Answer:

welpp

Step-by-step explanation:

3 0
3 years ago
-4x-2y=-12 <br>4x+8y=-24​
sweet [91]

Answer:

x = 6

y = -6

Step-by-step explanation:

By adding both equations :-

=》-4x -2y + 4x + 8y = -12 + (-24)

=》-4x + 4x + 8y - 2y = -12 - 24

=》6y = -36

=》y = -36 ÷ 6

=》y = -6

putting the value of y in equation 2

=》4x + 8y = -24

=》4x + (8 × -6) = -24

=》4x - 48= -24

=》4x = 48 - 24

=》x = 24 / 4

=》x = 6

6 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=400%20%5Cdiv%205%200" id="TexFormula1" title="400 \div 5 0" alt="400 \div 5 0" align="absmiddl
lyudmila [28]
The answer is 8 , 400/50=8
8 0
3 years ago
Find the product (4x-3y)(2x+5)
Llana [10]

Answer:

8x²−6xy+20x−15y

Step-by-step explanation:

(4x−3y)(2x+5)

=(4x+−3y)(2x+5)

=(4x)(2x)+(4x)(5)+(−3y)(2x)+(−3y)(5)

=8x²+20x−6xy−15y

=8x²−6xy+20x−15y

5 0
3 years ago
A kite flying in the air has a 4-m line attached to it. Its line is pulled taut and casts a 3-m shadow. Find the height of the k
NNADVOKAT [17]

Answer:

2.6

Step-by-step explanation:

I used the a^2+b^2=c^2 to get this answer. I squared all the number given and got 16 and 9. Then I subtract them to get 7. Finally square 7 off and got 2.6 as the final answer

Hope this helped

\sqrt{7}  = 2.6

3 0
2 years ago
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