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3 years ago

WILL MARK BRANLIEST IF GOTTEN RIGHT

Mathematics

1 answer:

sveticcg [70]3 years ago

3 0

Answer:

There is not enough information to prove the congruence

Step-by-step explanation:

There is not enough information to prove the congruence because we would need to be given at least 3 equal elements (angles and sides) between the triangles. But in this problem we are only given the fact that 2 sides are equal in both triangles, which as I mentioned earlier is not enough.

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A sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's p

charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

$n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\$

We calculate the standar deviation:

$\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176$

We calculate the value of the test statistic:

$z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85$

So the value of the test statistic is -0.85.

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4 years ago

What is the cost of each chicken and what is the cost of each duck

zimovet [89]

Answer: $8 chicken $5 duck

Step-by-step explanation:

50x+30y=550

x=8

y=5

400+150=550

7 0

4 years ago

Read 2 more answers

Find the next term in the following sequence 8, 13, 6, -16, -49, -82

DochEvi [55]

Answer:

Unidentifiable.

Step-by-step explanation:

8 to 13 is +5. 13 to 6 is -7. 6 to -16 is -20. -20 to -49 is -19. -49 to -82 is -33.

There is no distinguishable pattern since the differences between the terms vary significantly and in unpredictable ways. Make sure to double check you've got all your numbers correctly. <3

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3 years ago

What is the result when the number 11 is increased by 8.8%?

Dafna1 [17]

Answer:

11.968

Step-by-step explanation:

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3 years ago

225 grams of flour are needed to make 9 cakes.

Brut [27]

So basically, 9 cakes need 225 grams of flour
Therefore 1 cake needs: $\frac{225}{9}$ = 25 grams of flour

Moreover, 20 cakes need: 20 × 25 = 500 grams of flour

500 g > 475 g

Marian does not have enough flour to make 20 cakes

4 0

3 years ago