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4 years ago

Please help me with any of the questions

Mathematics

1 answer:

Svetlanka [38]4 years ago

7 0

1.) There are 6 numbers you can roll on a standard dice: 1, 2, 3, 4, 5, 6
There are 3 odd and 3 even. Keep in mind that an odd plus an odd will always be even and an even plus an even will always equal an even. Only if you add an odd and an even will you get an odd.

The chances of getting an even sum are much higher which is why you should choose even.

3.) The formula for finding the area of an equilateral triangle is (<span>√3)/4(a^2) where a is just a side length.

Because the perimeter is 12 and each side of an equilateral triangle is equal, we can divide 12 by 3 sides and get each side is 4. Plug in 4 for a.

</span>(√3)/4(4^2) = (√3)/4(16)

Because (√3)/4 = (1 x √3)/4,
(√3)/4(16) is equal to (16 x √3)/4

You have to divide (16 x √3) by 4. 16/4 = 4, and you only need to divide once to. We get 4√3 as the final answer.

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Plz answer my question

allochka39001 [22]

What is the question??

7 0

4 years ago

Read 2 more answers

The population of a type of local dragonfly can be found using an infinite geometric series where a1 = 65 and the common ratio i

hram777 [196]

In mathematics, number sequencing of the same pattern are called progression. There are three types of progression: arithmetic, harmonic and geometric. The pattern in arithmetic is called common difference, while the pattern in geometric is called common ratio. Harmonic progression is just the reciprocal of the arithmetic sequence.

The common ratio is denoted as r. For values of r<1, the sum of the infinite series is equal to

S∞ = A₁/(1-r), where A1 is the first term of the sequence. Substituting A₁=65 and r=1/6:

S∞ = A₁/(1-r) = 65/(1-1/6)
S∞ = 78

6 0

3 years ago

Kevin Horn is the national sales manager for National Textbooks, Inc. He has a sales staff of 40 who visit college professors al

just olya [345]

Answer:

(a) median = 57

(b) Q1=50 Q3=63.5

(c)D1 = 41 D9=67

(d)P33= 51

Step-by-step explanation:

(a) The numbers are arranged in ascending order, and there are even number of calls. So the median will be the average of the middle terms.

middle terms are 55 and 59

Median = $\frac{55+59}{2}$

median= 57

(b) First quarter Q1 = $\frac{1}{4} number of calls$ th

= $\frac{1}{4} *30$ th

= 7.5th

so the first quarter lies in the 7.5th= (7+0.5)th term

So we multiply 0.5 by the difference of the 7th and 8th term

=0.5 *0= 0

Q1 = 50+0=50

Q3= $\frac{3}{4} number of calls$ th

= $\frac{3}{4} *30$ th

=22.5th = (22+0.5)th term

So we multiply 0.5 by the difference of the 22th and 23rd term

= 0.5*1=0.5

Q3= 63+0.5=63.5

(c) First decile (D1) = $\frac{1}{10} number of calls$ th

= $\frac{1}{10} *30$ th

= 3rd term

D1= 41

D9= $\frac{9}{10} number of calls$ th

= $\frac{9}{10} *30$ th

=27th term

D9 = 67

(d) 33rd percentile = $\frac{33}{100} number of calls$ th

= $\frac{33}{100} *30$ th

= 9.9th term = (9 +0.9)th

Multiply 0.9 by the difference between the 9th and tenth term.

= 0.9*0 =0

P33 = 51

8 0

3 years ago

Mark and Tony share a sum of money in the ratio 3:5. What fraction of the money did Tony ratio receive?

gladu [14]

Answer:

Part A is 3/8 of the whole
Part B is 5/8 of the whole

Solution:
Assuming there are no other parts,
the Whole = A + B is the denominator:
Whole = 3 + 5 = 8

Part A = 3 and Part B = 5 are numerators for each fraction.

The fractions are then:
3/8 and 5/8

Meaning:
Part A is 3/8 of the whole
Part B is 5/8 of the whole

4 0

4 years ago

If Carl hangs a picture using 3/8 yard of a wire that is 1 1/8 yards long how much wire will Carl have left

nasty-shy [4]

Answer:

1 yard of wire or 8/8 yard of wire

Step-by-step explanation:

To figure out how much wire he has left you need to take 3 from 11 which equals 8. You do not change the 8 that is behind the 3 or 11. This means you have 8/8 or 1 yard of wire.

8 0

3 years ago