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Ivanshal [37]
3 years ago
10

Explanation please...........

Mathematics
2 answers:
mina [271]3 years ago
8 0

Answer:

my school

Step-by-step explanation:

block me from sieng the image

Tamiku [17]3 years ago
4 0

Answer:

answer: Hi = 15

Step-by-step explanation:

the larger shape is the same as the smaller shape just flipped over and bigger of course so to find this out you have to take 2 simular angles and find out what multiplied by the small angle will get the big angle so I see angles gh and ba are simular I try 4.5 ÷ 1.5 = 3 so 3 is how much the shape is being multiplied by so bc is simular to hi so I do 5 x 3 = 15 and theres are answer 15 is the length of hi hope this helps you!

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First two two terms of the given number sequence 3n + 1 are...​
PtichkaEL [24]

Answer:

the sequence begins as {4, 7, ... }

Step-by-step explanation:

a(n) = 3n + 1

The first term is a(1) = 3(1) + 1 = 4, and

the second term is a(s) = 3(2) + 1 = 7

So the sequence begins as {4, 7, ... }

5 0
2 years ago
1. What is the mean to the nearest tenth?
Inessa [10]

Solution: 1. The mean is given below:

Mean=\frac{\sum fx}{\sum f}

Where:

f is the frequency

x is the value

\therefore Mean=\frac{1 \times 7 + 2 \times 1+ 3 \times 3 + 4 \times 2 + 5\times 2}{15}

                       =\frac{7+2+9+8+10}{15} =\frac{36}{15} =2.4

Therefore, the mean = 2.4

2. The mean is given below:

Mean = \frac{8+11+23+15}{4}

                 =\frac{57}{4}

                 =14.3

I am not understanding why your teacher 14.3 is wrong. Please check whether the weight of 4 pumpkins is correct or not.

3. We are given that on average 5 passengers will board the bus at each of the 6 stops.

Let x be the number of passengers board the bus at the sixth stop.

Therefore, the average is:

\frac{3+7+5+6+2+x}{6} =5

23+x=30

x=30-23

x=7

Therefore, 7 passengers need to board the bus at the sixth stop for Leah's prediction to be true.

6 0
3 years ago
Kevin and Michelle traveled together by car and shared the driving. Kevin drove for 3.25 hours, then Michelle drove for 1.5 hour
jek_recluse [69]

Using the relation of velocity, distance and time, it is found that 35 represents Michelle's velocity.

-----------------------------

Velocity is <u>distance divided by time</u>, then:

v = \frac{d}{t}

Kevin drove for 3.25 hours, thus t_1 = 3.25. The distance drove by Kevin is:

d_1 = v_1t_1

d_1 = 3.25v_1

Michelle drove for 1.5 hours, thus t_2 = 1.5. The distance drove by Michelle is:

d_2 = v_2t_2

d_2 = 1.5v_2

The total distance is:

d = d_1 + d_2

d = 3.25v_1 + 1.5v_2

Comparing to the expression:

3.25v_1 + 1.5v_2 = 3.25(42) + 1.5(35)

We get that 42 is Kevin's speed and 35 is Michelle's speed.

A similar problem is given at brainly.com/question/24316569

8 0
3 years ago
Find the particular solution of the differential equation \frac{dy}{dx} + y\cos(x) = 5\cos(x)
Assoli18 [71]
\dfrac{\mathrm dy}{\mathrm dx}+y\cos x=5\cos x
e^{\sin x}\dfrac{\mathrm dy}{\mathrm dx}+y\cos xe^{\sin x}=5\cos xe^{\sin x}
\dfrac{\mathrm d}{\mathrm dx}\left[e^{\sin x}y\right]=5\cos xe^{\sin x}
e^{\sin x}y=5\displaystyle\int\cos xe^{\sin x}\,\mathrm dx
e^{\sin x}y=5e^{\sin x}+C
y=5+Ce^{-\sin x}
4 0
3 years ago
A genetic experiment with peas resulted in one sample of offspring that consisted of 438 green peas and 173 yellow peas.
Andre45 [30]

Answer:

a

The 95% confidence interval is 0.2474 < p < 0.3188

b

  The result obtained does not contradict expectation

Step-by-step explanation:

From the question we are told that

   The number of green peas is  k =  438

   The number of yellow peas is u =  173

Generally the sample size is mathematically represented as

       n  =  k + u

=>    n  = 438 + 173

=>    n  = 611

Generally the sample proportion for yellow peas is

      \^ p = \frac{u}{n}

=>   \^ p = \frac{173}{611 }

=>   \^ p = 0.2831

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally the margin of error is mathematically represented as  

     E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} }

=>  E =  1.96 * \sqrt{\frac{ 0.2831 (1- 0.2831)}{611} }

=>  E =  0.0357

Generally 95% confidence interval is mathematically represented as  

      \^ p -E <  p <  \^ p +E

=>     0.2831  -0.0357

=>     0.2474 < p < 0.3188

From the question we are told that it was expected that 25% of the offspring peas will be yellow

   Now from the 95% confidence interval obtained we see that the expected sample proportion(25% ) falls within it so  it means that the result obtained does not contradict expectation

7 0
3 years ago
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