Answer:
-55.1
Step-by-step explanation:
2x + 553x - 10
-2x -2x
551x - 10
/551 /551
x = -55.1
With exponents of 10, the exponent really just tells you how many zeroes there are behind the 1. So, for example, 10^4=10000 (4 zeroes behind 1). When multiplying decimals by exponents of 10, you move the decimal to the right, and the amount of places is the exponent number. For example, if I multiply 5.34 by 10^2, I move the decimal over to the right 2 times and get 534.
So, if you just multiply these you get 9.36*10000, which is 93600.
Even though you have reflected this triangle, your side length would still be the same. Explanation: Reflection is when you take an object on your coordinate plain and put it somewhere else on the plain. So if side QR is 3 than side Q’R’ would also be 3. Hope this helps!
Answer:
40
Step-by-step explanation:
8×(40+7)=(8×__)+(8×7)
several ways to do this, but the most simplistic (but probably not the quickest) way to do it is to simplify both sides of the equation and solve for the missing number,
lets substitute n for the missing number, hence equation becomes:
8×(40+7)=(8×n)+(8×7) (by PEDMAS, evaluate terms inside parentheses first)
8 x (47) = (8n) + (56)
8 x 47 = 8n + 56 (next evaluate multiply)
376 = 8n + 56 (subtract 56 from both sides)
376 - 56 = 8n (evaluate subtration and rearrange)
8n = 320 (divide both sides by 8)
n = 320 / 8
n = 40