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ira [324]
3 years ago
9

The number 21 is a(n) — number because

Mathematics
1 answer:
ser-zykov [4K]3 years ago
3 0

Answer:

Composite

Step-by-step explanation:

because it's factors are:

1, 3, 7, 21

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A vehicle purchased for $ 27500 depreciates at a constant rate of 4 % . Determine the approximate value of the vehicle 12 years
Anna35 [415]

Answer:

$13,200

Step-by-step explanation:

Multiply the original cost by .04 and 12 years

(original cost)(rate in decimal form)(time)

6 0
3 years ago
Complete the steps for solving 7 = -2x2+10x
V125BC [204]
Step 1: move all terms to one side

7 + 2x^2 - 10x = 0

Step 2: Use the quadratic formula

X = 10 + 2(square root of 11). 10-2 _/—-11
————————————. ——————
4. , 4

Step 3: Simplify solutions

X= 5 + (square root of 11) 5 - (square root 11)
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2. 2
4 0
3 years ago
Read 2 more answers
Solve the equation 1/x + 1/3x =4
vova2212 [387]

Answer:

4/3x

Step-by-step explanation:

4 0
2 years ago
2) What is the inequality that this graph represents? -15 # 3 6 x​
kvasek [131]

Answer:  y < -\frac{1}{2}x+3

This is the same as writing y < (-1/2)x+3

==============================================================

Explanation:

The dashed boundary line goes through (0,3) and (4,1)

Apply the slope formula for those two points

m = (y2-y1)/(x2-x1)

m = (1-3)/(4-0)

m = -2/4

m = -1/2

The slope of the dashed line is -1/2. The y intercept is 3. So we go from y = mx+b to y = (-1/2)x+3 to represent the equation of the dashed line. This is the same as writing y = -\frac{1}{2}x+3

We shade below the dashed line to represent the inequality y < -\frac{1}{2}x+3. Points in the shaded region are solutions to the inequality. One example point is (0,0).

Note that we don't have "or equal to" as part of the inequality sign because we are not including points on the boundary. A solid line, rather than a dashed line, would include points on the boundary.

3 0
2 years ago
Jack's annual salary increased by 10 percent and Arnie's decreased by 5 percent. If their annual salaries were equal in 2011 Arn
Ivenika [448]
15 percent I'm pretty sure correct me if wrong plz

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2 years ago
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