subtract 22 from both sides, simplify 3x = 10x-63, subtract 10x from both sides of the equation, simplify -7x = -63, divide both sides of the equation by the same factor -7x/-7 = -63/-7, then simplify

6 0

3 years ago

Use the distributive property to find the equivalent expression<br> 7(8 + d

olchik [2.2K]

Answer:

56 + 7d

Step-by-step explanation:

For using the distributive property, You have to multiply the first number to the rest. So 8 x 7 = 56 and 7 x d = 7d.

4 0

3 years ago

An offshore lighthouse is 2 kilometers from a Coast Guard station C and 2.5 kilometers from a hospital H near the shoreline. If

dangina [55]

Answer:

4.3 km

Step-by-step explanation:

The law of cosines can be used to find the desired distance. If we call the lighthouse position point L, then we have ...

CH² = LC² +LH² -2·LC·LH·cos(L)

CH² = 2² +2.5² -2·2·2.5·cos(143°) = 10.25 -10cos(143°) ≈ 18.2364

CH ≈ √18.2364 ≈ 4.27 . . . . km

The distance CH is about 4.3 km.

5 0

3 years ago