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kondaur [170]
3 years ago
15

In order to be exempt from the semester exam in your math class, I must earn at least an 80% average. The total number of points

in your class is 438. Last week, I earned 120 points. This week I earned 90 points. How many more points must I earn this week earn at least a B (80% average)?
Mathematics
1 answer:
fiasKO [112]3 years ago
6 0
Answer would be <span>140.40.</span>
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11. Simplify 3/ 2 - /2
Igoryamba

answer:

you can't simplify that

step-by-step explanation:

3/2- /2 isn't a proper equation, therefore it cannot be simplified

please let me know if the issue is that you forgot the numerator, and in the instance that this is the case please type in the comments the numerator and i'll gladly change my answer

have a nice day!

8 0
3 years ago
What is 2.3 (3 reapeating )as a fraction
Eddi Din [679]

The answer is 2\frac{1}{3}.

.\frac{}{3} equals \frac{1}{3}, so by adding 2 the answer is 2\frac{1}{3}.

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3 years ago
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A scientist measures the angle x and the distance y between the Earth and the Sun. Using complete sentences, explain how the sci
AnnZ [28]

The scientist can use only the angle x and the distance y to calculate the distance between the Earth and the Sun using the cosine function.

cos x = BC / y

Solving for BC

BC = y cos x

BC is the distance between the Earth and the Sun :D

7 0
3 years ago
In a one-way ANOVA, the __________ is calculated by taking the squared difference between each person and their specific groups
guapka [62]

Answer:

In a one-way ANOVA, the SS_{within} is calculated by taking the squared difference between each person and their specific groups mean, while the SS_{between} is calculated by taking the squared difference between each group and the grand mean.

Step-by-step explanation:

The one-way analysis of variance (ANOVA) is used "to determine whether there are any statistically significant differences between the means of two or more independent groups".

The sum of squares is the sum of the square of variation, where variation is defined as the spread between each individual value and the mean.

If we assume that we have p groups and each gtoup have a size n_j then we have different sources of variation, the formulas related to the sum of squares are:

SS_{total}=\sum_{j=1}^{p} \sum_{i=1}^{n_j} (x_{ij}-\bar x)^2

A measure of total variation.

SS_{between}=\sum_{j=1}^{p} n_j (\bar x_{j}-\bar x)^2

A measure of variation between each group and the grand mean.

SS_{within}=\sum_{j=1}^{p} \sum_{i=1}^{n_j} (x_{ij}-\bar x_j)^2

A measure of variation between each person and their specific groups mean.

8 0
3 years ago
For exercise, mr.harris walked 1 and 3 fourths miles 5 times last week.how many miles did he walk in all?
RUDIKE [14]
Well, if he walked one and three fourths miles five times, all you have to do is multiply one and three fourths and five to get your answer.

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4 years ago
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