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marshall27 [118]
3 years ago
7

describe two ways you could evaluate 37% of the sum of 27.6 and 15.9. tell witch method you would use and why

Mathematics
1 answer:
ozzi3 years ago
7 0
You could substract or divide It to get the sum.
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Find the absolute value.<br> What is the absolute value of four
iren [92.7K]

Answer:

whats the graph???

Step-by-step explanation:

5 0
3 years ago
Solve for s.<br> 8-45 5+13
Bess [88]

where is the s in here though

8 0
3 years ago
Lindsay is creating a bridge out of dried pasta and glue. In her plans, she sketches the graph to determine the lengths of the n
alexgriva [62]
From the graph shown it can be seen that the bridge is represented by a parabola with vertex of (5, 8) and roots of 1 and 9.

Recall that the vertex form of the equation of a parabola with vertex (h, k) is given by
y=a(x-h)^2+k

Thus, the equation of the given graph in vertex form is given by
y=a(x-5)^2+8

Also, recall that the equation of a parabola with roots, p and q, is given by
y=a(x-p)(x-q)

Thus the equation of the given graph can be given by
y=a(x-1)(x-9)

To get the value of a, we equate both equations and solve as follows:
a(x-5)^2+8=a(x-1)(x-9) \\  \\ a(x^2-10x+25)+8=a(x^2-10x+9) \\  \\ ax^2-10ax+25a+8=ax^2-10ax+9a \\  \\ 25a-9a=-8 \\  \\ 16a=-8 \\  \\ a=- \frac{8}{16} =- \frac{1}{2}

Therefore, the <span>function that Lindsay used to create her design is
f(x)=-0.5(x-5)^2+8
</span>
4 0
3 years ago
Read 2 more answers
My son needs help with this math page. I'm not too good in this area. Please help.
azamat

Answer:

7) 2 hours 30 minutes

8) 5280 yards  

9) 65 people

10) 192 cups

11) 74%

12) 15

13) D


HOPE IT HELPS

Step-by-step explanation:

7) 4 miles = 30 minutes

8 miles = 1 hour

12 miles = 1 hour 30 minutes

16 miles = 2 hours

20 miles = 2 hours 30 minutes

8) 1 miles = 1760

2 miles = 3520

3 miles = 5280

9) convert percentage into decimals

25% = .25

260 * .25 = 65

10) 1 gallon = 16 cups

12 x 16 = 192

11) 52:70*100


(52*100):70


5200:70 = 74.29

12) 60% / 100 = .6

.6 x 25 = 15

13) 1 liter = 1000 ml

18.75 x 1000 = 18750

18750 / 8 = 3750



6 0
3 years ago
Let f(x) = x2 - 81. Find f-1(x).
aalyn [17]
The answer is <span>1) ± √x+81
</span>
Step 1: Substitute y for f(x). <span>
Step 2: </span>Since every (x, y) has its partner (y, x)y switch x and y.
Step 3: <span>Solve for y.

Step 1.
The function is:         f(x) = x</span>² - 81
Substitute y for f(x):   y = x² - 81

Step 2.
Switch x and y: x = y² - 81

Step 3.
Solve for y (which is now f⁻¹(x)): f⁻¹(x) = y
x = y² - 81
y² = x + 81
y = +-√(x+81)

Therefore, the choice 1) is correct.
5 0
3 years ago
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