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4 years ago

Item 3

Mathematics

2 answers:

Sergio039 [100]4 years ago

8 0

Answer:

its a

Step-by-step explanation:

if you look at it its like it

Makovka662 [10]4 years ago

3 0

I don’t understand the question

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Write the equation of the line that passes through the points (-5,-2) and (−7,−2)

Viefleur [7K]

$\frac{ - 2 - ( - 2)}{ - 7 - ( - 5)}$

5 0

3 years ago

32. The length of a rectangle measures six more than the width. The perimeter of the rectangle is 38.

Ne4ueva [31]

Answer: 12.5

You start with the equations "2x +2y=38" and "6+x=y". By adding and subtracting in the second equation, you get "2x +2y=38" and "x-y=-6". When you multiply the second equation by 2, you get "2x-2y=-12."

subtracting the equations "2x +2y=38" and "2x-2y=-12" gets you to "4y=50", where you have to divide two sides by 4 and get "y=12.5"

6 0

3 years ago

Factor 4x^2 + 1x – 13

bulgar [2K]

Answer:

$(x - \frac{\sqrt{209} - 1}{8} )(x - \frac{-1 - \sqrt{209} }{8} )$

Step-by-step explanation:

FACTS TO KNOW BEFORE SOLVING :-

Quadratic Formula :-

Lets say , there's an equation ax² + bx + c.

$=> x = \frac{-b + \sqrt{b^2 - 4ac} }{2a} \: or \: \frac{-b - \sqrt{b^2 - 4ac} }{2a}$

SOLUTION :-

According to the question ,

a (Coefficient of x²) = 4

b (Coefficient of x) = 1

c (constant) = -13

By using quadratic formula ,

$x = \frac{-1 + \sqrt{1^2 - 4 \times 4 \times (-13)} }{2 \times 4} \: or \: \frac{-1 - \sqrt{1^2 - 4 \times 4 \times (-13)} }{2 \times 4}$

$=> x = \frac{-1 + \sqrt{209} }{8} \: or \: \frac{-1 - \sqrt{209} }{8}$

$=> (x - \frac{\sqrt{209} - 1}{8} ) \: and \: (x - \frac{-1 - \sqrt{209} }{8} )$ are the factors of 4x² + x - 13.

6 0

3 years ago

When Isaac commutes to work, the amount of time it takes him to arrive is normally distributed with a mean of 44 minutes and a s

mario62 [17]

Answer:

[34,54]

Step-by-step explanation:

-The empirical rule states that the 95% of the sampled observations will fall within two standard deviations of the mean for a normally distributed population.

Where:

68% is the first standard deviation
95% is the second standard deviation about the mean
99.7% is the 3rd standard deviation about the mean.

-Therefore. the middle 95% interval is calculated as:

$CI=\mu+2\sigma\\\\=44\pm 2(5)\\\\=44\pm 10\\\\=[34,54]$

Hence, the interval is [34,54]

5 0

3 years ago

Clare made a smoothie with 1 cup of yogurt, 3 tablespoons of peanut butter, 2 teaspoons of chocolate syrup, and 2 cups of crushe

Ugo [173]

Answer: it was probably more chocolaty because he added 5 teaspoons instead of 4 which is 2 doubled

Step-by-step explanation:

4 0

3 years ago