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-Dominant- [34]
2 years ago
6

ct%20%5C%3A%20of%20%5C%3A%20r" id="TexFormula1" title="y = \frac{x - r}{x + r?} find \: the \: subject \: of \: r" alt="y = \frac{x - r}{x + r?} find \: the \: subject \: of \: r" align="absmiddle" class="latex-formula">
find the value of r if y=3,and x=3.
​
Mathematics
1 answer:
Olenka [21]2 years ago
6 0

Answer:

r=-3/2=-1.5

Step-by-step explanation:

y=\frac{x+r}{x-r}\\\text{At} \ x=3\ \text{and} \ y=3\\3=\frac{3-r}{3+r}\\3*(3+r)=(3-r)\\9+3r=3-r\\6=-4r,\ r=-3/2=-1.5

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Sally is making pastry dough. She mixes 1/3 cup of flour and 1/5 cup of sugar. If she wants to mix flour and sugar To make 16 cu
myrzilka [38]

Answer:

5 1/3 flour    3 1/5 sugar

Step-by-step explanation:

5 0
3 years ago
Find the area of the circle. Round your answer to the nearest tenth. The circle has a radius of 9
Rudik [331]

Answer:

I is at least ten because of nine it rounds to ten

3 0
3 years ago
4.36 Stats final scores. Each year about 1500 students take the introductory statistics course at a large university. This year
velikii [3]

Answer:

The distribution of scores on this final exam is left-skewed.

Step-by-step explanation:

We use the Pearson Mode Skewness to solve this question. It states that:

If the median is higher than the mean, the distribution is left-skewed.

If the median is lower than the mean, the distribution is right-skewed.

If the median is the same as the mean, the distribution is symmetric.

In this problem, we have that:

Median = 74

Mean = 70

Median higher than the mean

So the distribution of scores on this final exam is left-skewed.

3 0
3 years ago
Read 2 more answers
Match the three graphs to the function they represent ?
Mama L [17]

Suppose that a>b>1, then

a^x>b^x and \log_ax

Therefore, since 2<3<7, \log_2x>\log_3x>\log_7x.

Choose an arbitrary x>1. You have that a takes the greatest values at x, c takes the smallest value at x. Thus,

a>b>c and

  • a=\log_2x;
  • b=\log_3x;
  • c=\log_7x.

Answer: correct option is B.


3 0
2 years ago
HELP ASAP WILL MARK BRAINLIEST!!! Add or subtract. Write your answer in scientific notation. 4.2 x 10^6 − 1.2 x 10^5 − 2.5 x 10^
erik [133]

Answer:

see below

Step-by-step explanation:

4.2 x 10^6 − 1.2 x 10^5 − 2.5 x 10^5

All exponent have to have the same number

42 x 10^5 − 1.2 x 10^5 − 2.5 x 10^5

Subtract the number

42 - 1.2 - 2.5 = 38.3

Add back the exponent

38.3 * 10 ^5

This is not in scientific notation

Move the decimal one place to the left and add one to the exponent

3.83 * 10^6

3.3 x 10^9 + 2.6 x 10^9 + 7.7 x 10^8

All exponent have to have the same number

3.3 x 10^9 + 2.6 x 10^9 + .77 x 10^9

Add the numbers

3.3+2.6+.77 =6.67

Add back the exponent

6.67*10^9

This is in scientific notation

8.0 x 10^4 − 3.4 x 10^4 − 1.2 x 10^3

All exponent have to have the same number

8.0 x 10^4 − 3.4 x 10^4 − .12 x 10^4

Subtract

8.0 - 3.4 - .12 = 4.48

Add back the exponent

4.48* 10^4

This is in scientific notation

8 0
3 years ago
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