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notka56 [123]
3 years ago
11

Please help me and please

Mathematics
1 answer:
vladimir1956 [14]3 years ago
7 0

Answer:

the answer is 10

Step-by-step explanation:

sorry if im wrong :) :(

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Marlene lives in a building where half the residents live on the first floor and half live on the second floor. She wants to est
Liula [17]
5/6........................................................
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4 years ago
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An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 160 engines
abruzzese [7]

Answer:

Test statistic   Z = 2.1097

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that size of the sample 'n' = 160

Given that mean of the Population(μ)  = 5.3pounds/square inch

The Standard deviation of the population(σ) = 0.6

Mean of the sample(x⁻) = 5.4

Level of significance =0.1

<u><em>Step(ii):-</em></u>

Test statistic

    Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }

   Z = \frac{5.4-5.3}{\frac{0.6}{\sqrt{160} } }

  Z = 2.1097

<u><em>Final answer</em></u>:-

Test statistic   Z = 2.1097

5 0
3 years ago
Please help me with these answers!!!
Ronch [10]

Answer:

Step-by-step explanation:

5) D  2000/200 = 10

6) C 90/9 = 10

7) B 80/8 = 10

8) A)   10 times 2 =10*2 = 20

3 0
3 years ago
Here is a flower made up of yellow hexagons, red trapezoids, and green triangles. How many copies of this flower pattern could y
RUDIKE [14]

Answer:

Step-by-step explanation:Answer:

Part a) You could build 5 copies of the flower pattern  

Part b) You would have 40 red trapezoids left over

Step-by-step explanation:

The complete question in the attached figure

Part a)

Let

x -----> the number of yellow hexagons

y ----> the number of red trapezoids

z ----> the number of green triangles

we know that

The flower pattern has the following ratios

Find out how many copies of this flower pattern could you build if you had 30 yellow hexagons,50 red trapezoids, and 60 green triangles

1) For x=30

Divide 30 by 6 (remember that in one pattern there are 6 yellow hexagons)

Verify the quantity of y needed and the quantity of z needed

Find the value of y

10 < 50 ----> is ok

Find the value of z

45<60 --->is ok

2) For y=50

Divide 50 by 2 (remember that in one pattern there are 2 red trapezoids)

Verify the quantity of x needed and the quantity of z needed

Find the value of x

150 > 30 ----> is not ok

3) For z=60

Divide 60 by 9 (remember that in one pattern there are 9 green triangles)

60/9=6.7 copies

Round down

6 copies -----> 6(9)=54 green triangles

Verify the quantity of x needed and the quantity of y needed

Find the value of x

36> 30 --->is not ok

therefore

You could build 5 copies of the flower pattern

Part b)

we know that

x:y:z=6:2:9

If you build 5 copies

1) You would use 5*6=30 yellow hexagons and you would have 0 hexagons left over

2) You would use 5*2=10 red trapezoids and you would have (50-10=40) trapezoids left over

3) You would use 5*9=45 green triangles and you would have (60-45=15) triangles left over

therefore

You would have 40 red trapezoids left over

8 0
2 years ago
Can someone pls help me!!!!!
Sliva [168]

Answer:

G

Step-by-step explanation:

4 0
3 years ago
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