Answer:
The correct answer is: The test had 10 4-point questions and 30 3-point questions.
Step-by-step explanation:
Let t be the number of 3-point questions on the test
and
f be the number of 4-point questions on the test
Then,
According to the given statement that the test had 40 problems
Eqn 1
And
According to given statement that the total points are 130
Eqn 2
These equations form a system of linear equations in two variables.
Elimination method or substitution method can be used to solve the system.
So, from equation 1:
Putting t = 40-f in equation 2
Subtracting 120 from both sides
Putting f = 10 in equation 1
Subtracting 10 from both sides
Hence,
Number of 3-point questions = t = 30
Number of 4-point questions = f = 10
So,
The correct answer is: The test had 10 4-point questions and 30 3-point questions.
Answer:
5b
Step-by-step explanation:
<em>Hope this helps <3</em>
Answer:
The larger cube is 8 times as great in volume than the smaller cube.
Step-by-step explanation:
(OVER EXPLANATION BELOW)
Start by finding an expression that fits this scenario.
The larger cube's area can be simplified as (2x)^3
The Smaller cube's area can be simplified as (x)^3
2. Lets remove the brackets and put an exponent on each term:
2^3 * x^3
_______ --pretend this is a fraction
the x^3 on the bottom and top cancel out.
x^ 3 Leaving 2^3
This means the greater cube is 2^3 larger than the other cube. 2 to the exponent of 3 is 2x2x2, so 8.
The slope of the graph would be 12.50, or 12.5. You can rewrite this problem out to "y=12.5x+1.5". Since the rate at which the graph is changing is 12.5, that is the slope.
<h2>
Answer: g - 8</h2><h2>
______________________________</h2><h3>
Simplify the expression.</h3>
Hope this helps!
Also can I have Brainliest please?