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ElenaW [278]
3 years ago
7

20a + 158 +6c = 20 (6) + 15 (4) + 6(8) + ? + ?

Mathematics
1 answer:
Jobisdone [24]3 years ago
7 0

Step-by-step explanation:

20a + 158+6c=you will expand the brackets

= so it is 120+60+48

20a+158+6c=120+60+48

20a+ 6c=120+60+48-158

20a+6c=70

20a divide by 20+6c divide by 6 on both side

a + c = 0.58

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If Hillary can read 560 words in 7 minutes how many words can Hilary read in 1 minute
Elza [17]
To find the number of words she can read per minute, we would do 560 divide by 7 minutes

560/7 = 80 words per minute

Hope this helps
3 0
4 years ago
Read 2 more answers
A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50% of this population prefers t
NeX [460]

Answer:

0.09

Step-by-step explanation:

Given that 50% of this population prefers the color green.

Let p the probability that one person selected from the population prefer the green color of the car. So,

p=0.05

There is only two chance, any person either prefer the green color or not, assuming this holds true for every person, so the mentioned population can be assumed as Bernoulli's population.

By using Bernoulli's theorem, the probability of exactly r success of n randomly selected from the Bernoulli's population is

P(r)=\binom{n}{r}p^{r}{(1-p)}^{n-r}\cdots(i)

Here, 15 buyers are randomly selected, so, n= 15 and

r= \frac1 3 \times 15=5

So, by using equation (i), the probability that exactly 5 buyers would prefer green out of 15 randomly selected buyers is

P(r=5)=\binom{15}{5}(0.5)^{5}{(1-0.5)}^{15-5}

=\binom{15}{5}(0.5)^{5}{0.5}^{10}

=\binom{15}{5}(0.5)^{15}

=0.0916

Hence, the probability that exactly 5 buyers would prefer green out of 15 randomly selected buyers is 0.09.

3 0
3 years ago
Can y’all help me with this!???? I’ll boost you up!
Alecsey [184]

The equations have been computed below

<h3>How to illustrate the information?</h3>

3(x + 2) + 11 = 5(x - 4)

3x + 6 + 11 = 5x - 20

Collect like terms

3x - 5x = -20 - 17

-2x = -37

x = 37/2

x = 18.5

6x + 4 = 3(3 - 2x)

6x + 4 = 9 - 6x

Collect like terms

6x + 6x = 9 - 4

12x = 5.

x = 5/12

Learn more about equations on:

brainly.com/question/2972832

#SPJ1

7 0
2 years ago
1. radius = 7 ft, central angle = 18°<br> Find arc length.
Vlada [557]

Answer:

2.2 ft ( to 1 dec. place )

Step-by-step explanation:

The arc length is calculated as

arc = circumference × fraction of circle

     = 2πr × \frac{18}{360}

     = 2π × 7 × \frac{1}{20}

     = 14π × \frac{1}{20}

     = \frac{14\pi }{20} ≈ 2.2 ft

7 0
3 years ago
1. In an AP, the ratio of the 2nd term to the 7th term is 1/3. If the 5th term is
grandymaker [24]

Answer:

T15 = 31

Step-by-step explanation:

Its in the picture

I hope it helps :)

6 0
4 years ago
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