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3 years ago

Plz help me:( and have a good rest of your day

Mathematics

1 answer:

diamong [38]3 years ago

7 0

Answer:

Step-by-step explanation:

to be a right triangle, the squared of the base and height must equal the hypotenuse squared:

$\sqrt{\left(3.45^2\right)+\left(9.75^2\right)}$ = 10.34238

10.24^2 =/= 10.34

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Is this all correct?

Doss [256]

Answer:

Step-by-step explanation:

11. Correct

11a. a is the number of accessories bought

12. 32 = 3.5a + 25

7 = 3.5a

a = 2

12a. cost of the bear

13. correct

13a. f(-1)=8

3 0

3 years ago

First person to give answer with work will get brainliest!!

Ket [755]

All you will have to do is put this inside of a graph and then see if it goes through the origin.

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3 years ago

A mattress store sells only king, queen and twin-size mattresses. Sales records at the store indicate that the number of queen-s

Nitella [24]

Answer:

The probability that the next mattress sold is either king or queen-size is P=0.8.

Step-by-step explanation:

We have 3 types of matress: queen size (Q), king size (K) and twin size (T).

We will treat the probability as the proportion (or relative frequency) of sales of each type of matress.

We know that the number of queen-size mattresses sold is one-fourth the number of king and twin-size mattresses combined. This can be expressed as:

$P_Q=\dfrac{P_K+P_T}{4}\\\\\\4P_Q-P_K-P_T=0$

We also know that three times as many king-size mattresses are sold as twin-size mattresses. We can express that as:

$P_K=3P_T\\\\P_K-3P_T=0$

Finally, we know that the sum of probablities has to be 1, or 100%.

$P_Q+P_K+P_T=1$

We can solve this by sustitution:

$P_K=3P_T\\\\4P_Q=P_K+P_T=3P_T+P_T=4P_T\\\\P_Q=P_T\\\\\\P_Q+P_K+P_T=1\\\\P_T+3P_T+P_T=1\\\\5P_T=1\\\\P_T=0.2\\\\\\P_Q=P_T=0.2\\\\P_K=3P_T=3\cdot0.2=0.6$

Now we know the probabilities of each of the matress types.

The probability that the next matress sold is either king or queen-size is:

$P_K+P_Q=0.6+0.2=0.8$

8 0

4 years ago

15. The price of a ticket for your office Christmas party is $17.75. So far you've sold 28 tickets. How much money should you ha

Marina CMI [18]

17.75 x 28 = 497
you answer is C

5 0

3 years ago

What is the best estimation of the equation

valentina_108 [34]

Answer:

What is the best estimation of the equation

−

? Drag the numbers into the boxes. Numbers may be used once, twice, or not at all.

1/2 added to

1/42011/21/8

−

1/2

Step-by-step explanation:

6 0

3 years ago