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Tema [17]
3 years ago
12

Ann charges $7.50 for 3 hours of gardening. What is her hourly rate?

Mathematics
1 answer:
slamgirl [31]3 years ago
8 0
Her hourly rate is $2.50
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3x+y=7<br> 6x+4y=22<br> can somebody help me solve this problem?
swat32
Hey there!

\boxed{x=1;y=4}

3x + y = 7 \\ \\ &#10;    6x + 4y = 22

y = -3x + 7 \\ \\ Plug \ this \ in \ for \ variable \ (y) \ in \ equation \ \\ \\ &#10;&#10;       6x + 4*(-3x+7) = 22 \\ \\ &#10;       -6x = -6 \\ \\ 6x=6 \ x+1 \\ \\ x=1 \ y=-3x+7 \\ \\ \boxed{y=-3(1)+7=4} \\ \\ \boxed{\boxed{x=1;y=4}}

I hope this helps you!
5 0
3 years ago
Suppose you are repeating a classic study of starfish and their impact on the ecosystems of tide pools. Using historic data coll
Travka [436]

Answer:

The probability of the number of starfish dropping below 3 is 0.0463.

Step-by-step explanation:

Let X represent the number of starfish in the tide pool.

X follows a Poisson distribution with mean 6.4.

The formula for Poisson distribution is as follows.

P(X=x) = e^{-6.4} * [6.4^{x} / x!] when x = 0, 1, ...

P(X = x) = 0 otherwise

We need to find the probability that the number of starfish in the tide pool drops below 3.

Therefore, the required probability is:

P(X < 3) = P(X = 0) + P(X = 1) + P(X=2)

P(X < 3) = e^{-6.4} + (e^{-6.4}*6.4) + (e^{-6.4}*6.4^{2}/2)

P(X < 3) = 0.00166 + 0.01063 + 0.03403

P (X < 3) = 0.0463

4 0
3 years ago
The graph of y=f(x)y=f(x) is shown below. Find all values of xx for which f(x)&gt;0f(x)&gt;0
Rzqust [24]

Answer:

  (-∞, -7) ∪ (-3, ∞)

Step-by-step explanation:

The line y=0 is the x-axis. The graph is above the x-axis for x < -7 and for x > -3. The solution set is ...

  (-∞, -7) ∪ (-3, ∞)

4 0
2 years ago
The total cost in dollars to buy uniforms for the players on a volleyball team can be found using the function C equals 34.95 yo
ASHA 777 [7]

Answer:

8 ≤ u ≤ 12

Step-by-step explanation:

Given:

C = 34.95u +6.25

Where,

u = number of uniforms

what is the domain you of the function for this situation

The number of uniforms depend on the number of players

If there are at least 8 players but not more than 12 players on the volleyball team.

u ≥ 8

u ≤ 12

The domain of the function is

8 ≤ u ≤ 12

8 0
3 years ago
Suppose AP = 2 cm and BQ = 7 cm. What is the length of PC?
viktelen [127]

Step-by-step explanation:

is this a quadrilateral? or polygon or triangle?

what are the angles (I believe there should be at least an angle given) else PC can be any value that is positive

3 0
3 years ago
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