Answer:
12 dimes, 8 nickels
Step-by-step explanation:
1. Set up an equation. Since we know the relationship between how many dimes and how many nickels that he has, we can create values for them.
2. Say that the number of nickels is x, so the number of dimes would be 2x-4.
3. Since we know that all of the coins that he has is 20 coins, we can say that 2x-4+x=20.
4. Solve the equation. We get 3x=24, and x=8.
5. That means that the number of nickels is 8, and the number of dimes is 2(8)-4, which is 12.
Answer: Timmy has 12 dimes and 8 nickels.
Answer:
3
Step-by-step explanation:
f(x) = 2x-5
Let x = 4
f(4) = 2*4 - 5
Multiply
f(4) = 8 -5
Subtract
f(4) = 3
Answer:
Step-by-step explanation:
<u>Area Of Squares
</u>
The area of a square of side length B centimeters is
If we have two rows, each one containing B of those squares, then the total area is
Simplifying
To convert 45000 inches into miles first you have to find out how much is miles to inches then divide you should 0.4500
In order to do this problem, you need to follow the exponent rules.
For addition and subtraction, you need to have the same power to add or subtract.
For multiplication and division, you just need to add or subtract the power.
A. 8.6 × 3.2 = 27.52 and then with the powers so it's 10⁷
27.52 × 10⁷ is the same thing as 2.752 × 10⁸ so it cant be choice a
B. 1.870 x 10⁷ + 2.565 x 10⁸ you need the powers to be the same so the change one to make the other one the same so it would be 0.1870 x 10⁸ + 2.565 x 10⁸ which equals to 2.752 x 10⁸ so b cant be it either
C. 6.88 x 10¹¹ ÷ 2.5 x 10³ you just divide 6.88/2.5 = 2.752 and then subtract the exponents so it's 2.752 x 10⁸ c cant be it either
D. 7.887 x 10¹² -- 5.135 x 10⁴ that already doesn't look right because if you just subtract it directly, it's 2.752 and the two powers are completely off
The correct wrong answer is D
Hopes this helps!
