You multiply each term by each term when expanding double brackets, so:
-2x × 9x = -18x^2
-2x × -3y = 6xy
8y × 9x = 72xy
8y × -3y = -24y^2
Now you combine the like terms to get
-18x^2 + 78xy - 24y^2
I hope this helps!
Answer:
The answer is 4. He sold the console for slightly more than 150 dollars.
Step-by-step explanation:
× 150 is 162.5 dollars.
The answer is 4. He sold the console for slightly more than 150 dollars.
Answer:
<u>The diver's depth is 144.5 feet below sea level.</u>
Step-by-step explanation:
Let's find out the answer using the information given:
Depth of the diver = - 200 feet (below sea level)
Ascent speed = 12 1/3 feet per minute
Ascent duration = 4.5 minutes
Diver's depth after the ascent = - 200 + 12 1/3 * (4.5)
Diver's depth after the ascent = - 200 + 37/3 * (4.5)
Diver's depth after the ascent = - 200 + 12.33 * (4.5)
Diver's depth after the ascent = - 200 + 55.5
Diver's depth after the ascent = - 144.5
<u>After ascending 4.5 minutes, the diver will be 144.5 feet below sea level.</u>
The y value should be -128
24 mm^2
Reasoning:
The area of the big triangle will be: (6+4+2)(5)(0.5). The answer will be equal to 30 mm^2. The area of the smaller triangle will be: (4)(3)(0.5). The answer will be 6 mm^2. Next, subtract the area of the larger triangle by the smaller triangle (30-6). The final answer will then be 24mm^2.
Sorry if this may have been confusing. I had to do this on my phone.