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MAXImum [283]
3 years ago
5

What is the solution to this equation7x-12x-5= -45+15​

Mathematics
1 answer:
balandron [24]3 years ago
6 0

Answer:

-5x-5 = -50

-5x = -45

x = 9

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Please help!!<br><br>Find BD​
Temka [501]

Answer:  8\sqrt{2}

==========================================================

Work Shown:

Focus entirely on triangle ABD (or on triangle BCD; both are identical)

The two legs of this triangle are AB = 8 and AD = 8. The hypotenuse is unknown, so we'll say BD = x.

Apply the pythagorean theorem.

a^2 + b^2 = c^2\\\\c = \sqrt{a^2 + b^2}\\\\x = \sqrt{8^2 + 8^2}\\\\x = \sqrt{2*8^2}\\\\x = \sqrt{8^2*2}\\\\x = \sqrt{8^2}*\sqrt{2}\\\\x = 8\sqrt{2}\\\\

So that's why the diagonal BD is exactly 8\sqrt{2}\\\\ units long

Side note: 8\sqrt{2} \approx 11.3137

6 0
3 years ago
A pole that is 3m tall casts a shadow that is 1.22m long. At the same time, a nearby building casts a shadow that is 38.5m long.
vichka [17]
Refer to the diagram shown below.

The height of the pole is CD (3 m), and its shadow is AB (1.22 m).
The height of the building is h m, and its shadow is AD (38.5 m).

The two triangles ΔABC and ΔADE are similar because of AAA.
Therefore
\frac{DE}{BC} = \frac{AD}{AB} \\\\  \frac{h}{3} = \frac{38.5}{1.22}

Cross multiply.
1.22 h = 3*38.5 = 115.5
h = 115.5/1.22 = 140.91 m

Answer: 141 m (nearest meter)

5 0
4 years ago
Read 2 more answers
Is Mikasa less than or equal to Levi <br> This is math I promise
Hitman42 [59]

Answer:

less than because levi is one of the most skilled

3 0
3 years ago
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What is the 4th term in the sequence? <br><br> C(1)=56<br> C(n)= c(n-1)•1/2
Anton [14]

Answer:

The 4th term is 7

Step-by-step explanation:

we have

C(n)=C(n-1)\frac{1}{2}

C(1)=56

step 1

Find C(2)

For n=2

C(2)=C(1)\frac{1}{2}

C(2)=(56)\frac{1}{2}=28

step 2

Find C(3)

For n=3

C(3)=C(2)\frac{1}{2}

C(3)=(28)\frac{1}{2}=14

step 3

Find C(4)

For n=4

C(4)=C(3)\frac{1}{2}

C(4)=(14)\frac{1}{2}=7

therefore

The 4th term is 7

3 0
4 years ago
A basket contains 10 red apples and 7 green apples. One apple is selected at random and is not replaced. A second apple is then
Juliette [100K]

Answer:

Step-by-step explanation:

3 0
3 years ago
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