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Gnoma [55]
3 years ago
14

Helppppp needed plz quick

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
4 0

Answer:

Step-by-step explanation:

9x - 77 = 7x - 43

2x - 77 = -43

2x = 34

x = 17

9(17) - 77 = 153 - 77 = 76

7(17) - 43 = 119 - 43 = 76

z + 76 = 180

z= 104

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Plz help got it wrong show work plz
igor_vitrenko [27]

Answer: C) $1951.53

<u>Step-by-step explanation:</u>

A=P(1+r)^{t}

  • A is amount accrued (final balance)
  • P is the Principal (original amount deposited)
  • r is the rate (in decimal form)
  • t is the number of years

A=1500(1+0.068)⁴

  = 1500(1.068)⁴

  = 1951.53

6 0
4 years ago
Scores on the GRE are normally distributed with a mean of 514 and a standard deviation of 92. Use the 68-95-99.7 rule to find th
SpyIntel [72]

Answer:

2.5%

Step-by-step explanation:

The percentage of people taking the test who are above 698 is ___%

Empirical rule formula states:

95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ

From the question, we have:

Mean of 514 and a Standard deviation of 92

Hence:

μ ± xσ

514 ± 92x = 698

514 + 92x = 698

92x = 698 - 514

92x = 184

x = 184/92

x = 2

Hence, the data is correct and it is 2 standard deviation from the mean. Therefore, 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

The question is asking us to find the percentage of people taking the test who are above 698 is calculated as:

100 - 95% /2

= 5/2

= 2.5%

The percentage of people taking the test who are above 698 is 2.5%

8 0
3 years ago
Part 1<br> Simplify each fraction. Some fractions can be simplified more<br> than once.<br> 66/108
levacccp [35]

Answer:

11/18

Step-by-step explanation:

divide the numerator and denomonater by the GCD, whic is 6.

then you would get the reduced fraction of 11/18

4 0
3 years ago
The radius of a sphere is 1 inch. Which expression represents the volume of the sphere?
allsm [11]

Answer:

V = 4/3π

Step-by-step explanation:

The volume of a sphere is found using the formula V = 4/3πr³. Substitute r = 1.

V = 4/3π1³

V = 4/3π(1)

V = 4/3π

6 0
3 years ago
Joey has 2 friends that can eat the same amount as him. If they decided to order all SMALL pizzas, how many SMALL pizzas would t
Georgia [21]

Answer:

At first instance, they can eat 3 SMALL pizzas together, while the total number of pizzas they can eat if there are subsequent instances is

3 × (Number of instance)

Step-by-step explanation:

Here, we have a word math problem, with Joey and his 2 friends who can eat the same amount as him

That is if the amount Joey can eat is x then each of his two friends can eat x hence total amount Joey and the two friends can eat is

x + 2x = 3x,

Where x is an number eaten per person at an instant

Therefore, if they decide to order all SMALL pizzas, the number of pizzas they can eat at the first instant is  3 × 1 = 3 SMALL pizzas

at subsequent instance, the number of pizzas eaten in total is 3·x  pizzas.

8 0
4 years ago
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