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Lemur [1.5K]
3 years ago
13

Help me with this question

Mathematics
1 answer:
Molodets [167]3 years ago
3 0

Answer:

Pretty sure its 7.5 units²

Step-by-step explanation:

5·3=15÷2=7.5

Doing area with triangles is kind of the same as rectangle, just do base × height. But then divide it by two.

For example: base=3, height=7. With rectangles it would be 21 units².

But with triangles it would be 3·7=21 divided by 2, it would be 10.5 units²

You might be interested in
If 50% is 30 what is 75%​
Gemiola [76]

Answer:

50\% = 30 \\ 70\% = x \\  \\ 50\%x = 30 \times 70\% \\ x =  \frac{30 \times 70\%}{50\%}  \\ x = 42 \\ hence \: 70\% \: is \: 42

6 0
3 years ago
An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. The particular
kolezko [41]

Answer:

42.1% of variation in the response is explained by the regression line

Step-by-step explanation:

Correlation coefficient is a measure which tells us that how strongly are two variables under study are linearly related to each other i.e correlation coefficient gives the strength of linear association between the variables.

If the magnitude of correlation coefficient is closer to 1, it indicates a strong linear relationship. If the magnitude of correlation coefficient is closer to 0, it indicates a weak linear relationship.

There is another variable known as "Coefficient of Determination", which is equal to square of Correlation Coefficient. Coefficient of Determination tells us that what percentage of variation in the response of the study can be explained by the regression line.

This means, for this question we need to calculate the Coefficient of Determination.

Correlation coefficient = r = 0.649

Coefficient of Determination = R = r² = (0.649)²= 0.421 = 42.1 %

This means that 42.1% of variation in the response is explained by the regression line.

5 0
3 years ago
Help me please
Stolb23 [73]

Answer:

Step-by-step explanation:

The ratio of the circumference to its diameter.

the proportion can be written this way

Circumference / diameter = pi / 1

4 0
2 years ago
Jared bought eighteen doughnuts to share with his coworkers. If each doughnut cost c cents, which expression represents his tota
Oduvanchick [21]
Wait, how many cents?
7 0
1 year ago
Pls help ASAP pls !!!
JulsSmile [24]

Answer:

130

Step-by-step explanation:

The Honda will cost 24480 - 1400 = 23080

The Toyota will cost 25500 - 0.1 * 25500 = 25500 - 2550 = 22950.

So the Toyota will cost 130 less

7 0
2 years ago
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