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3 years ago

Trying to understand integers. Is this correct 10=-10

Mathematics

2 answers:

storchak [24]3 years ago

8 0

No negatives don’t equal positives

adell [148]3 years ago

5 0

Answer:

No!

Step-by-step explanation:

No. 10 != -10, because one is positive and one is negative.

If we subtract them, 10 - (-10) = 10 + 10 = 20.

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Expand and simplify<br> (3y - 2)(y + 3)

Vedmedyk [2.9K]

Step-by-step explanation:

3y^2 + 7y - 6

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3 years ago

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The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,

bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

$\bar{x_1}=3.02\\\\\bar{x_2}=3.04\\\\\sigma_1=0.08\\\\\sigma_2=0.06$

So, s would be

$s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075$

So, the value of test statistic would be

$t=\dfrac{\bar{x_1}-\bar{x_2}}{s(\dfrac{1}{n_1}+\dfrac{1}{n_2})}\\t=\dfrac{3.02-3.04}{0.074(\dfrac{1}{50}+\dfrac{1}{25})}\\\\t=\dfrac{-0.04}{0.074(0.02+0.04)}\\\\t=\dfrac{-0.04}{0.044}\\\\t=-0.90$

Hence, the test statistic is t= -0.90.

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3 years ago

Wich one of the following items is an exmple of software?

saul85 [17]

A) Word-processing program is an example of a software

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3 years ago

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Simplify the expression to a polynomial in standard form: (3x-2)(-x^2+8x+6) (3x−2)(−x 2 +8x+6)

photoshop1234 [79]

Step-by-step explanation:

use mathaway! it helps a lot

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3 years ago

What’s the name of each quadrilateral and the answer

OleMash [197]

A) rhombus
b) trapezoid
c) square
d) rectangle
e) parallelogram
f) trapezoid
g) a parallelogram has 4 sides. The two opposite sides are always parallel.
A trapezoid has 4 sides. Only two opposite sides are parallel. The other two sides are not parallel.
h) a square has angles that must be 90degree big. A rhombus doesn’t.

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3 years ago