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Romashka [77]
2 years ago
14

In 28 years a man will be twice as old as he will be in 2 years. How old is he now? +

Mathematics
2 answers:
Nookie1986 [14]2 years ago
7 0

Answer:

He's 24

Step-by-step explanation:

x+28=2x+4

x=28-4

x=24

andrew-mc [135]2 years ago
3 0

Answer:

x+%2B+28+=+2x+%2B+4

x+=+28+-+4

x+=+24

He is 24 now

Step-by-step explanation:

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Find the missing side?
weeeeeb [17]

Answer:

Hey there!

Pythagorean Theorem: a^2+b^2=c^2

16+25=c^2

41=c^2

c=6.4

Let me know if this helps :)

6 0
3 years ago
The area of a trapezium is 35cm2.find its altitude if the bases is 6cm and 8cm​
r-ruslan [8.4K]

Answer: altitude: 5 cm

Explanation:

\sf \dfrac{1}{2}  ( a + b) h = Area \ of \ trapezium

[ <u>a and b are bases, h is the altitude</u> ]

Here given:

  • Area = 35
  • a = 6
  • b = 8
  • h = ?

Solve for altitude:

\sf \rightarrow \sf \dfrac{1}{2}  ( 6 + 8) h = 35  \ \  \  \Rightarrow  \ \ \ \dfrac{1}{2}  ( 14) h = 35 \ \ \ \ \Rightarrow   \ \ \  \ 7 h = 35 \ \ \ \  \Rightarrow \ \   h = \dfrac{35}{7} \   =  \  5

7 0
2 years ago
1. A waste management service attempts to design routes so that each of their trucks pick-up on average four tons of garbage or
Galina-37 [17]

Answer:

We conclude that garbage collector's average picking is more than four tons of garbage per day.

Step-by-step explanation:

We are given the following information n the question:

First, we design the null and the alternate hypothesis

H_{0}: \mu \leq 4\text{ tons}\\H_A: \mu > 4\text{ tons}

Significance level = 5% = 0.05

P-value = 0.04

  • The p-value is the probability of obtaining the observed results of a test, assuming that the null hypothesis is correct.
  • P values evaluate how well the sample data support that the null hypothesis is true.
  • P-value is a measure or indicator that helps us to know that whether the sample belongs to the population or not.
  • Null hypothesis states that the sample belongs to the population.
  • A high p-values states that the null hypothesis is true ad the sample belongs to the population.ll.
  • A low p-value suggests that sample provides enough evidence that you the null hypothesis is not true and the sample does not belong to the population.
  • We compare p-value to significance level to obtain our result.

Here,

p-value = 0.04 < Significance level = 0.05

Since the p-value is lower than the significance level, we fail to accept the null hypothesis and reject it. That is there were enough evidence to support the fact that sample does not belong to the population and we conclude that garbage collector's average picking is more than four tons of garbage per day.

6 0
3 years ago
journee ate 9 grapes . grandma gave her more grapes . journee ate 15 grapes in all . how many grapes did grandma give her ?
Law Incorporation [45]

Answer:

6 grapes.

Step-by-step explanation:

If she already had 9 grapes, subtract 15 and 9 to get 6.

6 0
3 years ago
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I need help please!!
Verdich [7]

Answer:

Step-by-step explanation:

do the thing times 2

7 0
3 years ago
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