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3 years ago

9

PLZZ answer lots of points

2 answers:

saul85 [17]3 years ago

8 0

Answer:

it is 7 hope helped

Step-by-step explanation:

vivado [14]3 years ago

5 0

Answer:

7

Step-by-step explanation:

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MATH HELP PLEASE!!!!!!!

Svetradugi [14.3K]

$f(x) = \dfrac{4x - 3}{7}$

$y = \dfrac{4x - 3}{7}$

$x = \dfrac{4y - 3}{7}$

$7x = 4y - 3$

$7x + 3 = 4y$

$4y = 7x + 3$

$y = \dfrac{7x + 3}{4}$

$f^{-1}(x) = \dfrac{7x + 3}{4}$

4 0

3 years ago

In a survey of 400 randomly selected people, it was determined that 22 play soccer. What is the probability that a randomly sel

insens350 [35]

Answer:

5.5% probability that a randomly selected person plays soccer

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Desired outcomes:

People surveyed who play soccer, so $D = 22$

Total outcomes:

Total people surveyed, so $P = 400$

What is the probability that a randomly selected person plays soccer?

$P = \frac{D}{T} = \frac{22}{400} = 0.055$

5.5% probability that a randomly selected person plays soccer

6 0

3 years ago

Rico can walk 3 miles in the same amount of time that Donna can walk 2 miles. Rico walks at a rate 2 miles per hour faster than

tatyana61 [14]

Answer:

$13$

Step-by-step explanation:

Donna's Rate is $R$

Rico's Rate is $R+2$

$\frac{R}{R+2}=\frac{2}{3}$

Cross-Multiply

$2(R+2)=32$

$2R+4=3R$

$4=R$

Donna's Rate is $R=4$

Rico's Rate is $R+2=6$

$\frac{6(130)}{60} = \frac{130}{10}=13$

5 0

3 years ago

If the mean is 2.7 determine the value of x and y

Allisa [31]

Answer:

13.5 and 13.5

Step-by-step explanation:

5 0

3 years ago

How do I solve this problem

aleksley [76]

The first blank is 121 and the second blank is 144

8 0

4 years ago