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Genrish500 [490]
3 years ago
11

A teacher gives a test with questions that fall into 3 levels of difficulty (easy, moderate, and hard).

Mathematics
1 answer:
Tpy6a [65]3 years ago
4 0
When a teacher gives a test with questions that fall into 3 levels of difficulty (easy, moderate, and hard) The scoring method that would best allow her to identify the students who need help is: 
B. weight each question by its difficulty: 1 for easy, 2 for moderate, and 3 for hard.
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Given the three points (0,3), (4,15), (5,33), determine the equation of the parabola they represent. State the direction the par
Nonamiya [84]

Answer:

D)The equation is f(x)=3x^2−9x+3, and the parabola opens upward.

3 0
3 years ago
If the m∠1=123° m ∠ 1 = 123 ° and m∠2= (2x+7)° m ∠ 2 = ( 2 x + 7 ) ° , determine the value of x that supports l∥m l ∥ m . Show y
Georgia [21]

Answer:

25

Step-by-step explanation:

Let us assume that m<1 nad m<2 are supplementary. Since the sum of supplementary angles is 180degrees, hence;

<1 + <2= 180

123+2x+7 = 180

130+2x = 180

2x = 180 - 130

2x = 50

x = 50/2

x = 25

Hence the value of x is 25

5 0
2 years ago
Pls help me with these equations
Viktor [21]
The answers to the questions

5 0
3 years ago
Read 2 more answers
What is the slope of the line with the given slope and y intercept m=1/4,b=-3/4
Arturiano [62]

Answer:

y=1/4x-3/4

Step-by-step explanation:

y=mx+b

where m=slope and b=y-intercept,

y=1/4x+(-3/4)

y=1/4x-3/4

6 0
2 years ago
Consider the following hypothesis test: : : A sample of provided a sample mean and a sample standard deviation . Enter negative
SSSSS [86.1K]

Answer:

-1.540

Step-by-step explanation:

H0 : μ = 18

H0 : μ ≠ 18

The sample size, n = 48

Sample mean, xbar = 17

Sample standard deviation, s = 4.5

α = 0.05

The test statistic :

(xbar - μ) ÷ (s/√(n))

(17 - 18) ÷ (4.5 / √48))

-1 ÷ 0.6495190

= -1.5396

= -1.540 (3 decimal places ).

5 0
3 years ago
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