<span>5
estimating sums of single digit numbers which of the following represents the most accurate estimation of 4+8? answer 5,10,20, and 25</span>
Answer: 15
Step-by-step explanation: 8 times 3 equals 24 then you subtract 9 from 24 which gives you 15.
<span>x² + y² + 14x − 4y − 28 = 0
x² +14x +y² - 4y =28
x²+2*7x +7² -7² + y² - 2*2y +2² - 2² = 28
(x+7)² + (y-2)² -7²-2² =28
</span>(x+7)² + (y-2)²=28+49+4
(x+7)² + (y-2)² =81 is the answer.
Answer:
40
Step-by-step explanation:
step 1: (-4)^2=16
step2: 12X2=24
step3: 16+24+40
Ps: when you do a math that involves both addition and multiplication,
we should do multiplication and then addition
Answer: ゼロ
Step-by-step explanation:
