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Illusion [34]
3 years ago
5

Sam is 10 years younger than one-half the age of his aunt. Let a represent his aunt’s age. Which shows his aunt’s age written as

an algebraic expression and Sam’s age if his aunt is 40?
Sam is 2 years old
Sam is 6 years old
Sam is 10 years old
Sam is 30 years old
Mathematics
2 answers:
mezya [45]3 years ago
8 0
Sam is 10. 
40=(1/2) + 10
40*.5 =20
20 - 10 = 10
wariber [46]3 years ago
3 0
Sam is 10 years old because 20 is half of 40 and 20 subtract 10 is 10
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8. Draw a number line and place the following it 4/8 0.25 3/4 0.5 0 1/2 1
Andru [333]
The correct order is: 0.25, 4/8=0.5 so they go above each other, 3/4
5 0
3 years ago
What is the anwser for 9*8*9*2981=?
goldenfox [79]

it would end up equaling 1931688

3 0
2 years ago
Lisa had 1750 stamps. Mark had 480 fewer stamps than Lisa. Lisa gave some stamps to Mark. Now Mark has three times as many stamp
FrozenT [24]
L: 1750, M:1750-480=1270
Lisa gave some stamps to Mark so Lisa now has 1750-x and Mark has 1270+x. Mark also has 3 times as many as Lisa now: (1750-x)*3=1270+x
5250-3*x=1270+x
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7 0
3 years ago
Read 2 more answers
find the value of x of given figure and solve this question step by step plzz help question number D​​
Alinara [238K]

Answer:

x=15 cm

Step-by-step explanation:

The two triangles in the diagram are:

ABC and BDC

First we have to find the third side (hypotenuse) of BDC so that we can use it to find the value of x.

Hypotenuse is the largest side of a triangle which is usually in front of the right angle.

So in BDC

Base = BD =10cm\\Hypotenuse = BC = ?\\Perpendicular = CD = 2\sqrt{11}cm

Applying Pythagoras theorem:

(Hypotenuse)^2  = (Base)^2 + (Perpendicular)^2\\BC^2 = BD^2 + CD^2\\BC^2 = (10)^2 + (2\sqrt{11})^2\\BC^2 = 100+(2^2 * 11)\\BC^2 = 100+(4*11)\\BC^2 = 100+44\\BC^2 = 144\\\sqrt{BC^2} = \sqrt{144}\\BC = 12cm

Solving for triangle ABC

Base = BC = 12 cm\\Perpendicular = AB = 9 cm\\Hypotenuse = AC = x\\

Applying Pythagoras theorem

AC^2 = BC^2+AB^2\\x^2 = (12)^2 + (9)^2\\x^2 = 144+81\\x^2 = 225\\\sqrt{x^2} = \sqrt{225}\\x = 15cm

Hence,

x=15 cm

8 0
3 years ago
What are the excluded values?<br><br> 0 and 15<br><br> 3 and -5<br><br> -3 and 5
Dima020 [189]

Answer:

x=5    x = -3

Step-by-step explanation:

-7 / ( x^2 -2x -15)

Factor the denominator

-7

----

(x-5) ( x+3)

The excluded values are when the denominator is equal to zero

(x-5) (x+3) =0

x-5 =0   x+3=0

x=5    x = -3

7 0
4 years ago
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