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Hunter-Best [27]
3 years ago
10

It will take five builders 62 days to complete a particular project. At this rate, how long would the project take if there were

only two builders?(SHOW WORK)
Mathematics
1 answer:
Lena [83]3 years ago
6 0

Answer:

2 builder complete work = 155 days

Step-by-step explanation:

Given:

5 builder complete work = 62 days

So,

1 builder complete work = 62 days × 5

if,

2 builder complete work = [62 days × 5] / 2

2 builder complete work = 155 days

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there are usually 30 students in my science class 1/5 of the students are absent today how many students were in my class today
Vesnalui [34]
30/5 = 6

30 - 6 = 24

Therefore, only 24 students were in class today.  
6 0
3 years ago
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2. The sum of the reciprocals of two consecutive positive integers is 17/72. Write an equation that can be used to find the two
Lena [83]
To answer this item, we let x be the first positive integer. Then, the second would be x+1. Their reciprocals would be 1/x and 1/(x+1). Then, the equation that would best represent the scenario above is,
                            1/x + 1/(x+1) = 17/72
Solving the equation above,
                           ((x+1) + x) / (x)(x+1) = 17/72
If we take the numerators of both sides of the equation,
                              (x+1) + x = 17
The value of x from the equation is 8 and x+1 would be 9. Thus, the answer would be 8 and 9. 
8 0
4 years ago
he lengths of a particular​ animal's pregnancies are approximately normally​ distributed, with mean muequals252 days and standar
Rashid [163]

Answer:

Step-by-step explanation:

Let X be the lengths of a particular​ animal's pregnancies

X is N(252, 20)

​(a) What proportion of pregnancies lasts more than 262 ​days? ​

P(X>262) = 0.3085

(b) What proportion of pregnancies lasts between 227 and 257 ​days?

P(227

​(c) What is the probability that a randomly selected pregnancy lasts no more than 237 ​days?

P(X<237) = 0.2266

​(d) A​ "very preterm" baby is one whose gestation period is less than 202 days. Are very preterm babies​ unusual?

P(X

Yes very unusual since probability is very near to 0.

7 0
4 years ago
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HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
ivolga24 [154]

<u>Answer:</u>

<h2>A = 15 u²</h2>

<u>Explanation:</u>

according to the coordinates the triangles is right at the pair (2, -3)

the area of the triangle = height × base × 1/2

the <u>height</u> is the line passing through the pairs (-1, 6) and (2, -3)

h² = (2-(-1))²+(-3-6)²

h² = 3² + (-9)²

h² = 9 + 81

h² = 90

h = √90

the <u>base</u> is the line passing through the pairs (5, -2) and (2, -3)

b² = (2-5)²+(-3-(-2))²

b² = 3² + (-3+2)²

b² = 9 + 1

b² = 10

b = √10

A = h×b×1/2

A = √90×√10×1/2

A = √900×1/2

A = 30×1/2

A = 15 u²

5 0
3 years ago
Subtract<br> (a-3a+5)-(-a+2b+3)
uysha [10]
1 Simplify a-3a+5a−3a+5 to -2a+5−2a+5 -2a+5-(-a+2b+3)−2a+5−(−a+2b+3) 2 Simplify brackets -2a+5+a-2b-3−2a+5+a−2b−3 3 Gather like terms (-2a+a)+5-2b-3(−2a+a)+5−2b−3 4 Simplify -a+5-2b-3−a+5−2b−3 5 Simplify -a-2b+2−a−2b+2
5 0
3 years ago
Read 2 more answers
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