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2 years ago

6

Ms.pacheco is three years older than mr.richards mr.edward is twice as old as mr.richard the sum of mr.richards age and mredward

s age is 81

1 answer:

iren [92.7K]2 years ago

5 0

Ms. Pacheco is 43 and a half
Mr. Richards is 40 and a half
Mr. Edwards is 81

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Select all of the following that are quadratic equations.

kifflom [539]

A quadratic equation is one in which the highest exponent of x is 2.
$7x^2+14x=0$ is quadratic; the highest exponent is 2.
x³-3x²+1=0 is NOT quadratic. The highest exponent of x is 3, not 2.
5x-7=0 is NOT quadratic. The highest exponent of x is 1, not 2.
x²+3x-5=0 is quadratic; the highest exponent of x is 2.
x-5=9x+7 is NOT quadratic. The highest exponent of x is 1, not 2.
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5 0

3 years ago

Which value for the number makes the statement true? the quotient of a number and five is 8. a-4, b-8, c-40, d-80

Inga [223]

The letter is c because you divide 40 by 5 = 8

6 0

2 years ago

HELP ASAP I WILL GIVE YOU THE POINTS !!! <br><br> What is the value of x?

Crazy boy [7]

Answer:

80

Step-by-step explanation:

70 + 30 = 100

180 - 100 = 80

7 0

2 years ago

Read 2 more answers

. Use the statistical features of your calculator to find the mean and the standard deviation to the nearest tenth of a data set

uysha [10]

Answer:

Mean = 1.9

Standard deviation = 0.6

Step-by-step explanation:

The Mean is calculate by the formula:

$Mean = \frac{\text{Sum of all the observation}}{\text{Total number of observation}}$

⇒ $Mean = \frac{24.9+24.7+24.7+23.4+27.9}{5} = 1.85$

Thus Mean to the nearest tenth is 1.9

Standard Deviation is the square root of sum of square of the distance of observation from the mean.

$Standard deviation(\sigma) = \sqrt{\frac{1}{n}\sum_{i=1}^{n}{(x_{i}-\bar{x})^{2}} }$

where, $\bar{x}$ is mean of the distribution.

Putting all values in the formula, We get

Standard Deviation = 0.597 ≈ 0.6

6 0

2 years ago

You and your sister each want to sit in the front seat of your mom’s car. For each of the following, decide if the

olya-2409 [2.1K]

The correct answer is A. You flip a two-sided coin.

the fairest answer would be A. you flip a two-sided coin. a randomly generated number would not be fair, and your mom choosing would also not be fair, therefore the answer is You flip a two-sided coin.

good luck :)

7 0

3 years ago