Eview the proof of the identity cos(π − A) = −cosA. cos(π − A)

Step 1: = cosπcosA − sinAsinπ

Step 2: = (−1)(cosA) + (sinA)(0)

Step 3: = −1cosA + (sinA)(0)

Step 4: = −cosA + 0

Step 5: = −cosA

At which step was an error made?

step 1
step 2
step 3
step 4

1/3(x-10)=-4 solve for x with steps

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

For each proportion find the unknown number x 1/5/8=×/15