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marshall27 [118]
3 years ago
14

What is a double fact

Mathematics
2 answers:
disa [49]3 years ago
8 0
Double facts are additions in which a number is added to itself. ex.1+1 2+2 
Luden [163]3 years ago
8 0
I double fact is something that is being it added by itself. Such as 8+ 8
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a five foot boy casts a 2 foot shadow. At the same time the shadow of the court house tower is 25 feet in length. How tall is th
erastovalidia [21]

Answer:

The court house tower should be 51 feet tall.

Step-by-step explanation:

2.5+2.5=5 feet because 2+2=4 and 0.5+0.5=1. 4+1=5

25.5+25.5=51 because 25+25=50 and 0.5+0.5=1. 50+1=51

7 0
3 years ago
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A box contains a $1 bill, a $5 bill, a $10 bill, and a $20 bill. If two bills are selected at random what is the probability tha
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Answer:

50%

Step-by-step explanation:

Because you can get either 1 and 5 which is 6 or 10 and 1 whoch is 11 but the other two will give you 15+

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4 years ago
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I need to show work and Idk how for 2 or 3. The -5,-2 and 8,3 is the answers just need work shown thanks
prisoha [69]
#2
2x - 4y = -2
2x + 3y = -16
------------------subtract
-7y = 14
y = 14/-7
y = -2

2x - 4y = -2
2x - 4(-2) = -2
2x + 8 = -2
2x = -2 -8
2x = -10
x = -10/2
x = -5
answer x = -2 and y = -5

check:

2(-5)- 4(-2) = -2
-10 +8 = -2
-2 = -2.....true

2x + 3y = -16
2(-5)+3(-2) = -16
-10 + (-6) = -16
-16 = -16...true


3 0
3 years ago
HELP PLEASE!! Sally has a mass of 70 kilograms and Dave weighs 170 pounds. What is Sally's weight as a percentage of Dave's weig
k0ka [10]

Step-by-step explanation:

Sally mass = 70 kilograms

Dave mass = 170 pounds ≈ 77 kilograms

Sally's mass as a percentage of Dave's mass = (70/77)x100

Sally's mass as a percentage of Dave's mass ≈  91 %

3 0
3 years ago
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Yolanda bought a rose bouquet. The equation C = 1.5r+6 represents the cost, C, of a rose bouquet that has r roses. Yolanda's bou
Deffense [45]

Answer:

A. 16 roses

Step-by-step explanation:

30 - 6 = 24

24 divided by 1.5 equal 16

r = 16

hopefully this helps you :)

pls give me brainlest :)

7 0
3 years ago
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