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Anna71 [15]
3 years ago
11

Sole the following problems by setting up a proportion, then solving by cross multiplying. if possible, set up the proportion as

a single step proportion for the problem.
a pair of 80 headphones went on sale for 15% off. what was the sale price
Mathematics
1 answer:
masha68 [24]3 years ago
5 0

Answer:

chicken butt

Step-by-step explanation:

you fell for it

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100 POINTS AND BRAINLIEST! FULLY CORRECT AND EXPLANITORY ANSWERS ONLY!
Fed [463]

Answer:

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29

5 0
3 years ago
Read 2 more answers
Let X be the number of Heads in 10 fair coin tosses. (a) Find the conditional PMF of X, given that the first two tosses both lan
inn [45]

Answer:

Follows are the solution to the given point:

Step-by-step explanation:

For option A:

In the first point let z be the number of heads which is available on the first two trails of tosses so, the equation is:

P(X=k | z=2 ) = \begin{pmatrix} 10-2\\ k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k}

                         = \begin{pmatrix} 8\\k-2\end{pmatrix} (\frac{1}{2})^{k-2} (\frac{1}{2})^{10-k} \ \ \ \ \ \ \ \ \  \ \\\\

                                                                                                       k= 2,3..........10For option B:

P(X=k | X \geq 2 ) =  \sum^{10}_{i=2}  \begin{pmatrix} 10-i\\ k-i\end{pmatrix} (\frac{1}{2})^{k-i} (\frac{1}{2})^{10-k}

                                                                                                k= 2,3, 4.........10

8 0
3 years ago
The math club and the science club had a fundraiser. The math club spent $135 buying 6 cases of juice and 1 case of bottled wate
irina [24]

Answer:

what is the quistion

Step-by-step explanation:

5 0
3 years ago
What is the value of x that makes the given equation true? ​x−3x=2(4+x)
Margarita [4]

the answer to your question is x= -2

5 0
3 years ago
Read 2 more answers
An unconditional acceptance into a graduate program at a university will be given to students whose GMAT score plus 100 times th
Talja [164]

Answer:

​Robbin's grade point average must be at least 2.75 in order to be unconditionally accepted into the program. ​

Step-by-step explanation:

An unconditional acceptance into a graduate program at a university will be given to students whose GMAT score plus 100 times the undergraduate grade point average is at least 1075

Considering the GMAT score x, and the GPA y, this situation is modeled by the following inequality:

x + 100y \geq 1075

Robbin's GMAT score was 800.

This means that x = 800, and thus:

x + 100y \geq 1075

800 + 100y \geq 1075

100y \geq 275

What must her grade point average be in order to be unconditionally accepted into the​ program?

Solving the above inequality for y:

100y \geq 275

y \geq \frac{275}{100}

y \geq 2.75

Thus:

​Robbin's grade point average must be at least 2.75 in order to be unconditionally accepted into the program. ​

7 0
3 years ago
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