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3 years ago

The sum of two numbers is 27. One number is 2 times as large as the other. What are the numbers?

Mathematics

1 answer:

mafiozo [28]3 years ago

7 0

X+y=27
x=2y

2y+y=27
y=9

x=27-y
x=27-9=18

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Quadrilateral ABCD with AB= 5.5cm,BC= 3.5cm,CD= 4cm,AD= 5cm and <A= 45°.

11111nata11111 [884]

Answer:

⇒ Draw a line segment AB=5.5cm

⇒ Take A as a center and draw an angle of 45

⇒ Cut off AD=5cm

⇒ Take D as a center with radius 4.5cm and draw an arc.

⇒ Take B as a center with radius 3.5cm and draw an arc, which meets previous arc at point C.

⇒ Join BC and CD.

∴ ABCD is a required quadrilateral.

Step-by-step explanation:

hope this helps!

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2 years ago

. The mean incubation time for a type of fertilized egg kept at a certain temperature is 25 days. Suppose that the incubation ti

Paul [167]

Answer:

Step-by-step explanation:

Given that the mean incubation time for a type of fertilized egg kept at a certain temperature is 25 days.

Let X be the incubation time for a type of fertilized egg kept at a certain temperature is 25 days.

X is N(25, 1)

a) Normal curve is in the attached file

b) the probability that a randomly selected fertilized egg hatches in less than 23 days

= $P(X$

we convert x into Z score and use std normal distn table to find probability

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8 0

3 years ago

Also need help on this

Ira Lisetskai [31]

Answer is 0.5
-2 divided by -4 equals 0.5
and same thing for the rest of the equation.

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3 years ago

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butalik [34]

Step-by-step explanation:

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2 years ago

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loris [4]

Answer:

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Step-by-step explanation:

Let be $r = -14 - i\,5$ . In the complex plane, if $\Re (r) < 0$ (real component) and $\Im (r) < 0$ (imaginary component), the number belongs to the third quadrant of the complex plane. The complex number $r = -14 - i\,5$ belongs to the third quadrant of the complex plane.

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2 years ago