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3 years ago

For what values of h does the equation have real solutions. √(3x-h)= x+3

Mathematics

1 answer:

Andru [333]3 years ago

4 0

Square both side to get

3x-h = (x+3)^2

distribute the squared

3x - h = x^2 + 6x + 9

subtract 3x from both sides

-h = x^2 + 3x + 9

The answer will only have real solutions if the right side is factorable

h= -19, and 2.25 are both values that would make the right side factorable

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3/5 of the students in a classroom are girls if there are 10 boys in the class how many total students are there

nata0808 [166]

16 students is the correct answer...
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3 years ago

You're shopping for a new 45" HD TV.

Bezzdna [24]

Answer:

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399.99-99.99=300

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Step-by-step explanation:

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2 years ago

How many servings in 3/4 of a cookie when each serving is 1/2 cookie

pishuonlain [190]

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3 years ago

a cone has a volume of 1,570in3. If the height of the cone is 15 inches. Calculate the radius of the cone?

spin [16.1K]

Answer:

approximately 10

Step-by-step explanation:

Volume = 1/3h times $\pi$ times radius square

1570 = 1/3 x 15 x 22/7 x $r^{2}$

1570 = 5 times $\frac{22}{7}$ times $r^{2}$

1570 = 15.71 $r^{2}$

$\frac{1570}{15.71}$ = $\frac{15.71 r^{2}}{15.71}$

99.9 = r^2

$\sqrt{99.9}$ = r

≅10

5 0

3 years ago

A rectangular board has a perimeter of 28 feet. if the length is twice the width minus 1 foot, then what is the length of the bo

Westkost [7]

P = 2(L + W)
P = 28
L = 2W - 1

28 = 2(2W - 1 + W)
28 = 2(3W - 1)
28 = 6W - 2
28 + 2 = 6W
30 = 6W
30/6 = W
5 = W ....width is 5 ft

L = 2W - 1
L = 2(5) - 1
L = 10 - 1
L = 9 <=== length is 9 ft

4 0

3 years ago