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3 years ago

Estimate the product 33.6 x 82.1

1 answer:

7 0

I would just round the numbers and then multiply

33.6 rounded = 34
82.1 rounded = 82

So just multiply 34 by 82

34 x 82 = 2788

Hope that helps and correct me if I'm wrong!

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The ratio of the angle measures of a triangle is 1:3:5. Find the angle measures. Then classify the triangle by its angle measure

ExtremeBDS [4]

A triangle has 180 degrees. You can find the total sum of the ratio by adding its parts together 1+3+5 = 9 Now to find out what each part of the ratio is worth we divide the whole value (180) by the sum of the ratio parts (9)
180/9 = 20

Now we multiply each part of the ratio by 20
1 * 20 = 20
3 * 20 = 60
5 * 20 = 100

Since we have an angle greater than 90 degrees this is an obtuse triangle.

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4 years ago

a plane intersects a prism parallel to the base of the prism. the cross section is a polygon with eight sides. The base of the p

luda_lava [24]

Eight sides, hope this helps!

6 0

3 years ago

Read 2 more answers

Set 2 Maths has 30 pupils in it.

Ierofanga [76]

80/100 x 30 = 24 because you just multiply percents

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3 years ago

Rewrite the fractions with their LCD.

masya89 [10]

Well the best answer for LCD is $\frac{2}{5x+15y}$ is 5(x+3y) and the best answer for LCD is $\frac{1}{2x+6y}$ is 2(x+3y)

I hope this helps!

7 0

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

3 years ago