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zmey [24]
3 years ago
8

2(y - 2) = 20" alt="5y( y + 3) - 2(y - 2) = 20" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
5 0

Answer:

Step-by-step explanation:

5y^2+15y-2y+4=20

5y^2-13y+4=20

5y^2-13y+4-20=0

5y^2-13y-16=0

This equation is in standard form: ax^2+bx+c=0. Substitute 5 for a, 13 for b, and −16 for c in the quadratic formula.

Alecsey [184]3 years ago
4 0

Answer:

y =  \frac{ - 13 -  \sqrt{489} }{10}

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Craig sells cabinets at a 600% percent markup from the cost of materials. He spent $2000.00 on the materials for cabinets he jus
barxatty [35]

Answer:

3781

Step-by-step explanation:

80 hours × $18=$1440 for labor. 1440+15%(1440×.15)=$216.00 + material cost=$2125

(2125.00+1440.00+216=3781)

6 0
2 years ago
You are competing in a race. The table shows the times from last year's race you want your time to be last year's median time wi
aleksandr82 [10.1K]

Answer:

27\leq x \leq37

Step-by-step explanation:

Let's arrange the numbers from least to greatest:

20, 25, 27, 28, 31, 32, 32, 38, 40, 40, 42, 48

The median is the "middle" number when arranged from least to greatest.

There are 12 numbers, so the middle number would be "average" of 6th and 7th terms.

6th term = 32

7th term = 32

Average = (32+32)/2 = 32

Hence, median = 32

Absolute deviation of 5 minutes means 5 minutes less or greater than the median, 32.

So, 32 - 5 = 27  &  32 + 5 = 37

Hence  27\leq x \leq37

4 0
3 years ago
The function f(x) = 2x 26 represents the distance a flock of birds travels in in miles. The function g(x) = x − 1 represents the
nydimaria [60]

Speed is the ratio of distance and time. When we divide f(x) by g(x) we will get the speed of the flock that is 9 miles/hour.

<h3>What is speed?</h3>

Speed can be defined as the rate of change in the position of an object. It is given as,

Speed = \dfrac{Distance}{Time}

Given to us

Distance traveled, f(x) = 2x+26

Time, g(x) = x − 1

As we know that the ratio of distance and time is equal to the speed of the object. Since the distance traveled by the flock of birds is given also, the time needed for them to travel the distance is also given.

We need to find f divided by g of 5, which is the speed of the flock,

Speed = \dfrac{Distance}{Time} = \dfrac{f(x)}{g(x)}

Speed = \dfrac{f(x)}{g(x)}  = \dfrac{2x +26}{x-1}

Speed = \dfrac{f(5)}{g(5)}  = \dfrac{2(5) +26}{(5)-1}\\\\Speed = 9 \rm\ miles/ hour

Hence, when we divide f(x) by g(x) we will get the speed of the flock that is 9 miles/hour.

Learn more about Speed:

brainly.com/question/7359669

7 0
3 years ago
Ramon plays a game which his older sister he first gains 5 points then loses 8 points and finally gains 10 points what is his fi
vladimir1956 [14]

Answer:

7 points

Step-by-step explanation:

started out w/ 5 points, then loses 8

5 - 8 = -3

gains 10 points

-3 + 10 = 7

3 0
3 years ago
Which reflection of the point will produce an image at the same time coordinates (0,k)
Anettt [7]
I need more details.
4 0
3 years ago
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