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Zarrin [17]
3 years ago
10

Determine the range of values of k such that the equation x²-4kx+4k²+5k+7 = 0 has real roots. ​

Mathematics
1 answer:
slega [8]3 years ago
6 0

Answer:

<h3>This is the answer of your question. ☺☺</h3>

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The price of an item has been reduced by 15%. The original price was $17
g100num [7]

Answer:

17/100*85= $14.45

Step-by-step explanation:

Divide by 100 and multiply by (100-15) 85 to get the result.

5 0
3 years ago
The answer to this question please
cestrela7 [59]

If its to number 9, it's ∈35.48

6 0
3 years ago
Find the area of the figure. Round your answer to the nearest tenth
expeople1 [14]

Answer:

4 in

Step-by-step explanation:

5 0
3 years ago
Help me with this question, please!
AURORKA [14]

Answer:

3,432 m²

Step-by-step explanation:

The amount of aluminum in square meters needed to make the mailboxes = 1863(surface area of each mailbox)

Surface area of each mail box = ½(surface area of cylinder) + (Surface area of rectangular prism/box - area of the surface of the box that joins the half-cylinder)

✔️Surface area of ½-cylinder = ½[2πr(h + r)]

r = ½(0.4) = 0.2 m

h = 0.6 m

π = 3.14

Surface area of ½-cylinder = ½[2*3.14*0.2(0.6 + 0.2]

= 0.628(0.8)

Surface area of ½-cylinder = 0.5024 m²

✔️Surface area of the rectangular box/prism = 2(LW + LH + WH)

L = 0.6 m

W = 0.4 m

H = 0.55 m

Surface area = 2(0.6*0.4 + 0.6*0.55 + 0.4*0.55)

Surface area of rectangular box = 1.58 m²

✔️Area of the surface joining the half cylinder and the box = L*W = 0.6*0.4 = 0.24 m²

✅Surface area of 1 mailbox = (0.5024) + (1.58 - 0.24)

= 0.5024 + 1.34

= 1.8424

Amount of aluminum needed to make 1863 mailboxes = 1863 × 1.8424 = 3,432.3912

= 3,432 m²

8 0
3 years ago
Solve the inequality -4&gt;-4 + h.<br> A. h&lt;0<br> B. h&gt;0<br> C. h&lt;3<br> D. h&gt;-8
artcher [175]

Answer:

A. H<0

Step-by-step explanation:

<em>Add by 4 from both sides of equation.</em>

<em>-4+4>-4+h+4</em>

<em>Simplify.</em>

<em>0>h</em>

<em>Then, switch sides to find the answer.</em>

<em>h<0</em>

<em>h<0 is the correct answer.</em>

6 0
3 years ago
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