Answer:
9.2 and -9.2(because when a negative is squared by another negative it becomes positive)
Step-by-step explanation:
The reasoning is that if you multiply a decimal fraction by itself it is known as squaring the given number. So to get the answer you must square root 84.64, which gives you 9.2 or -9.2.
Answer:
They should insert that y value into the other equation.
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
They have to be equal if abc and adc are equal
therefore the answer is A
hows that :D
1. 980 ÷ 100 = 9.8 = 1%
9.8 × 14 = 137.2
2. 50 ÷ 5 = 10 = 20%
10 ÷ 2 = 5 = 10%
20% + 10% = 30%
3. 78 × 5 (because 20% is 1/5) = $390
4. 6000 ÷ 100 = 60 = 1%
60 ÷ 2 = 30 = 1/2%
6000 - 30 = 6970
5. 25000 ÷ 100 = 250 = 1%
250 ÷ 5 = 50 = 1/5%
250 × 12 = 3000
3000 + 50 = 3050 = 12 1/5%
6. 75% is 3/4
12 ÷ 3 = 4 = 25%
4 × 4 = 16
7. 30/20 = 3/2 = 1.5
=150%
8. 20000 ÷ 100 = 200 = 1%
200 ÷ 4 = 50 = 1.4%
200 + 50 = 250
I hope this helps!
Step-by-step explanation:
Let's take cost of 1 hamburger as h and the cost of 1 hot dog as d.
Therefore, we can form the equations:
3h + 2d = 13 and
2h + 4d = 14
2(h +2d) = 14
h + 2d = 7
h = 7 - 2d
By substituting this to the first equation, we get:
3(7 - 2d) + 2d = 13
21 - 4d = 13
4d = 8
d = $2
h = 7 - 2(2)
h = $3
Hence <u>1 hot dog costs $2</u> and <u>1 hamburger costs $3</u>