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3 years ago

Find the value of this expression if x = 1 and y = -7. x^2y/-9

Mathematics

1 answer:

Dmitry [639]3 years ago

3 0

Answer:

math is hard for me but yeah a good place to find answers is here or ggl maybe search on gg and the at the end put answer key i do that a lot hope my

Step-by-step explanation:

explanation helps

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John davis, a manager of a supermarket, wants to estimate the proportion of customers who use food stamps at his store. he has n

8_murik_8 [283]

Answer:

1509

Step-by-step explanation:

We know that, formula for number of samples is,

$n= \frac{z^2 \times p \times q}{SE^2}$

When nothing is given, we take $p=0.5$ and we know that $q = 1-p=0.5$ .

SE = 0.03 (the true proportion should remain withing 3%)

Putting the values we get,

$n= \frac{(2.33)^2 \times 0.5 \times 0.5}{(0.03)^2}$

$n= \frac{5.4289 \times 0.5 \times 0.5}{0.03 \times 0.03} \approx 1509$

Therefore, the sample required to estimate the true proportion to within 3 percentage points is 1509.

7 0

4 years ago

You are 330 miles from home and you are driving toward home at an average of 55 mph. Write an equation to represent the situatio

Softa [21]

55x=330. so x=6 the domain is 6 because its the input and 330 is the range because its the outpt

4 0

4 years ago

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Solve the equation ALGEBRA

Kryger [21]

You got it correct

about + - 10.4

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3 years ago

HELP! I WILL GIVE BRAINLIEST AND RATING!

Ede4ka [16]

Answer:

The answer is C.

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3 years ago

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Una empresa registró la entrada de 1354 celulares y 1586 tabletas al almacén sin embargo una semana después de un sismo dañó par

Marysya12 [62]

Explicación paso a paso:

Para el celular:

Número total de teléfonos móviles registrados antes del terremoto = 1354 teléfonos móviles

Número total de teléfonos móviles registrados después del terremoto = 571+ 28 = 599 teléfonos móviles

Número total de teléfonos móviles en el almacén después del terremoto = 1354 + 599 = 1953 teléfonos móviles.

Para la tableta:

Número total de tabletas registradas antes del terremoto = 1586 teléfonos móviles

Número total de tabletas registradas después del terremoto = 942 + 45 = 987 teléfonos móviles

Número total de tabletas en el almacén después del terremoto = 1586 + 987 = 2573 tabletas.

3 0

4 years ago