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3 years ago

What is the product? PLSS HELP!!

Mathematics

1 answer:

STALIN [3.7K]3 years ago

6 0

The answer would be [3 -12 15 -21 ]

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What is the value of x in the equation below? -3-(-8)-(-2)= X -13 3 ОО

inn [45]

Answer:

log2 8=c

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

Ad libitum [116K]

Answer:

(351.04, 368.96)

Step-by-step explanation:

Given that population mean= 360

Std devitaion = 4

margin of error = 2.5%= 0.025

Since population std deviation is known we can use Z critical value

For two tailed critical value for 2.5% would be

2.24

Margin of error = ±Critical value*std deviation

= ±2.24(4)

= ±8.96

Confidence interval =(Mean - margin of error, mean + margin of error)

= $(360-8.96, 360+8,.96)\\= (351.04, 368.96)$

3 0

4 years ago

Violet saw a scarf online for $24. If she has an 18% discount coupon what would be the discount amount?

Alika [10]

The discount would be $4.32, and the total after the discount would be $19.68.

6 0

3 years ago

A quadratic relation has zeros at 3 and –5. The parabola goes through the point (2, –14). What is the equation of the parabola i

olasank [31]

Answer:

$\displaystyle 2 {x}^{2} + 4x - 30 = 0$

Step-by-step explanation:

we are given the zeros and a point where it goes through of a quadratic equation

remember that when the roots are given then the function should be

$\displaystyle \: y = a(x - x_{1})(x - x_{2})$

where a is the leading coefficient and x1 and x2 are the roots

substitute:

$\displaystyle y = a(x - (3))(x - ( - 5))$

simplify:

$\displaystyle y = a(x - 3)(x + 5)$

now the given point tells us that when x is 2 y is -14 therefore by using the point we can figure out a

substitute:

$\displaystyle a(2 - 3)(2 + 5) = - 14$

simplify parentheses:

$\displaystyle a( - 1)(7) = - 14$

simplify multiplication:

$\displaystyle - 7a = - 14$

divide both sides by -7:

$\displaystyle a = 2$

altogether substitute:

$\displaystyle y = 2(x - 3)(x + 5)$

since it want the equation y should be

$\displaystyle 2(x - 3)(x + 5) = 0$

recall quadratic equation standard form:

$\displaystyle {ax}^{2} + bx + c = 0$

so simplify parentheses:

$\displaystyle 2( {x}^{2} + 2x - 15 ) = 0$

distribute:

$\displaystyle 2 {x}^{2} + 4x - 30 = 0$

hence,

the equation of the parabola in standard form is 2x²+4x-30=0

8 0

3 years ago

Why does it take 10 copies of 1 sixth to make the same amount as five copies of 1 third explain your answer in words and picture

vesna_86 [32]

10 is double of 5
6 is double of 3

5 0

4 years ago