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4 years ago

9

When a metallic ball bearing is placed inside a cylindrical container, of radius 2 cm, the height of the water, inside the conta

iner, increases by 0.6 cm. The radius, to the nearest tenth of a centimeter, of the ball bearing is

1 answer:

Elan Coil [88]4 years ago

7 0

It will be 1.2 cm,......

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Next number in sequence 7 16 8 27 9 ?

djyliett [7]

The next number is 38. The pattern is 7, 16, 8, 27, 9; if you look at the first 4 numbers, you notice that it counts to 7, 8, 9. Then you have 16 and 27, if the pattern continues; the next number is 38.

6 0

3 years ago

Read 2 more answers

Question in the picture. 10pt.

ELEN [110]

Answer: A and D

Step-by-step explanation:28 x 43=860

20 x 3=60

860-60=800

20 x 40=800

all of this equals 860

3 0

4 years ago

Determine the value of y that maintains the congruence of the figures.

Arturiano [62]

Answer:

We conclude that the value of y = 11 cm.

Step-by-step explanation:

Given that both the figures maintain the congruence of the figures. It means both the figures have the same size.

Thus,

The length of DQ = The length of EL

Given

The length of DQ = 3y - 1

The length of EL = 32 cm

so

The length of DQ = The length of EL

3y - 1 = 32

Adding 1 to both sides

3y - 1 + 1 = 32+1

3y = 33

Dividing both sides by 3

3y/3 = 33/3

y = 11

Thus, the value of y = 11 cm

Therefore, we conclude that the value of y = 11 cm.

6 0

4 years ago

The U.S. Energy Information Administration claimed that U.S. residential customers used an average of 10,608 kilowatt hours (kWh

Marat540 [252]

Answer:

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average

Step-by-step explanation:

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

Given that the mean of the Population = 10,608 kWh of electricity this year.

Given that the size of the sample n = 187

Given that mean of sample x⁻ = 10737 kWh

The Standard deviation of the Population = 1220kWh

Level of significance = 0.05

The critical value (Z₀.₀₅)= 1.96

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

Null Hypothesis: H₀:μ > 10608 kWh

Alternative Hypothesis: H₁: μ < 10608kWh

Test statistic

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

$Z = \frac{10737- 10608 }{\frac{1220}{\sqrt{187} } }$

Z = 1.4460

<u>Final answer:-</u>

The calculated value Z = 1.4460 < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

A local power company believes that residents in their area use more electricity on average than EIA's reported average.

3 0

3 years ago

1~ Please help. What is the measure of m∠P and m∠N?

gladu [14]

Answer:

<em>Answer is option</em><em> </em><em>b</em><em>)</em>

Step-by-step explanation:

$sum \: of \: opposite \: angles \: of \: a \: \\ cyclic \: quadrilateral \: is \: 180 \: degrees \\ from \: the \: diagram \\ 2x + 2x - 12 = 180 \\ 4x - 12 = 180 \\ 4x = 180 + 12 \\ 4x = 192 \\ x = \frac{192}{4} \\ x = 48 \\ angle \: P \: = 2x \\ \: \: \: = 2(48) \\ \: \: \: = 96 \: degrees \\ angle \: N \: = 2x - 12 \\ \: \: \: \: = 96 - 12 \\ \: \: \: = 84 \: degrees$

<em>HAVE A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

7 0

3 years ago