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3 years ago

Use the dimensions of the rectangular prism to label the indicated dimensions of its net.

Mathematics

1 answer:

Marrrta [24]3 years ago

8 0

Answer:

what do u mean

Step-by-step explanation:

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Determine which equation has exactly one real solution. PLS HELPP

sergey [27]

Answer:

b) $4x^2-12x+9=0$

Step-by-step explanation:

We can use the discriminant $b^2-4ac$ to determine how many real solutions a quadratic equation in the form $ax^2+bx+c=0$ has.

discriminant > 0 ⇒ 2 real solutions
discriminant = 0 ⇒ 1 real solution
discriminant < 0 ⇒ no real solutions

$5x^2+9x-4=0$

$b^2-4ac=9^2-4(5)(-4)=161 > 0\implies \textsf{2 solutions}$

$4x^2-12x+9=0$

$b^2-4ac=(-12)^2-4(4)(9)=0 \implies \textsf{1 solution}$

$-9x^2+6x+1=0$

$b^2-4ac=6^2-4(-9)(1)=72 > 0 \implies \textsf{2 solutions}$

$-2x^2-7=0$

$b^2-4ac=0^2-4(-2)(-7)=-56 < 0 \implies \textsf{no solutions}$

4 0

2 years ago

X-1/2=15 1/4 whats x and show work

ikadub [295]

X-1/2=15 1/4

15 1/4 = 15*4 + 1 = 61/4

61/4

x - 1/2 = 61/4
+1/2 +1/2

61/4 + 2/4 = 63/4

x = 63/4

7 0

3 years ago

Elio makes candles that are 14 cm tall. Each candle burns 8 hours before going out. He is wondering how many hours a 21 cm tall

MAXImum [283]

Elio is right in assuming the relationship between the height and the hours it burns is proportional.

Find the unit rate

14 ÷ 8 = 1.75 cm/h

Divide

21 ÷ 1.75 = 12

You can set this up as an algebraic equation to check the answer.

If the candle is 21 cm tall, it will burn for 12 hours.

Hope this helped you! :)

8 0

3 years ago

To make a project, you need a rectangular piece of fabric

Sati [7]

Answer:

12 ft²

Step-by-step explanation:

area = length * width

area = 4 ft * 3 ft

area = 12 ft²

7 0

3 years ago

Read 2 more answers

9 X 5.000 = 9 x ____thousands

OverLord2011 [107]

Answer:

5x 1000

Step-by-step explanation:

4 0

3 years ago