NEED HELP ASAP I WILL GIVE BRAINLIEST
2 answers:
Answer:
The correct option is;
She forgot to square the scale factor
Step-by-step explanation:
The parameters given are;
Dimensions of large rectangle;
Base = 30 cm
Height = 25.5
Dimensions of the small rectangle;
Base = b
Height = a
The formula to find the area of scaled dimension (small triangle) is given as follows;
Area of small triangle = (Scale factor)² × Original (or actual) area
Whereby the area, A, of a triangle is given as follows;
The smaller triangle area, , should therefore be given as follows;
Plugging in the values, we have;
However, from the question, we have;
(1/2)(25.5)(30)(1/5) = 76.5 cm²
Therefore, the correct option is that she forgot to square the scale factor.
You might be interested in
Answer:
There cannot be equal errors in both and yellow has fewer errors.
Step-by-step explanation:
we can do paired t test for these two colours
(one tailed test)
df = 9
The data can be tabulated as follows:
Yellow white
5 7
2 6
6 8
7 5
2 9
5 11
3 8
8 3
4 6
9 10
t-Test: Paired Two Sample for Means
Yellow white
Mean 5.1 7.3
Variance 5.877777778 5.788888889
Observations 10 10
Pearson Correlation -0.139051655
Hypothesized Mean Difference 0
df 9
t Stat -1.908439275
P(T<=t) one-tail 0.044341411
t Critical one-tail 1.833112923
P(T<=t) two-tail 0.088682822
t Critical two-tail 2.262157158
Since p value one tailed = 0.0443 and it is <0.05 our significance level, we reject null hypothesis.
There cannot be equal errors in both and yellow has fewer errors.