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2 years ago

-12-(-8)+(-3) what is the answer to this question

Mathematics

2 answers:

Helen [10]2 years ago

7 0

Answer:

-7

Step-by-step explanation:

-12 -(-8) + (-3)

-12 + 8 - 3

= -7

Natali5045456 [20]2 years ago

3 0

Answer:

Step-by-step explanation:

-12-(-8)+(-3)= -12+8-3

=-12+-3+8

= -15+8

= -7

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Find the interquartile range of the data represented by this box plot.

Eduardwww [97]

Answer:

B) 30

Step-by-step explanation:

The interquartile range in 100 to 130.

130-100=30

7 0

2 years ago

Read 2 more answers

For which sample size (n) and sample proportion (p) can a normal curve be

Nonamiya [84]

Answer:

Option c.

Step-by-step explanation:

Using the normal curve to approximate a sampling distribution:

For a sample size n and a proportion n, the normal curve can be used if:

$np \geq 10$ and $n(1-p) \geq 10$

Option a:

$np = 35*0.8 = 28 > 10$

$n(1-p) = 35*0.2 = 7 < 10$

So option a cannot be used.

Option b:

$np = 65*0.9 = 58.5 > 10$

$n(1-p) = 65*0.1 = 6.5 < 10$

So option b cannot be used.

Option c:

$np = 65*0.8 = 52 > 10$

$n(1-p) = 65*0.2 = 13 > 10$

So option c can be used, and is the answer

Option d:

$np = 35*0.9 = 31.5 > 10$

$n(1-p) = 35*0.1 = 3.5 < 10$

So option d cannot be used.

The answer is given by option c.

7 0

3 years ago

If A is the area of a circle with radius r and the circle expands as time passes, find dA/dt in terms of dx/dt

valina [46]

The area of a circle in terms of the circle's radius $r$ is

$A=\pi r^2$

Differentiating both sides with respect to $t$ , you get

$\dfrac{\mathrm dA}{\mathrm dt}=2\pi r\dfrac{\mathrm dr}{\mathrm dt}$

3 0

3 years ago

The polynomial p(x)=1−2x2−3x3+4x has what order? a. 4 b. 2 c. 3 d. 1

VLD [36.1K]

Answer:

Step-by-step explanation:

Given the polynomial : p(x)=1−2x2−3x3+4x

Rearranging : p(x) = -3x³ - 2x² + 4x + 1

Looking at the polynomial Given, we can see that it is a univariate polynomial, that is it has only one variable which is x. Thus for polynomials of this sort, the order of the polynomial is the highest exponent occurring in the polynomial equation. Therefore, the order of the polynomial above is 3, because the highest power of the function is 3.

This means that those with 4 as their highest exponent are of order 4 and those with highest exponent as 2 are of order 2.

3 0

2 years ago

4/5 n = 9/10 solve n

Alex787 [66]

N =9/8
n = 1 1/8

Hope this helpsb☺

6 0

3 years ago