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slamgirl [31]
3 years ago
6

Miss James has a six square-foot bulletin board in at 12 ft.² bulletin board she wants to cover both boards with index cards wit

hout gaps or overlaps each index card has an area of 1/4 ft.² how many index cards does she need
Mathematics
1 answer:
irinina [24]3 years ago
5 0
6 divided by 1/4 = 24 + 12 divided by 1/4 = 48, then 48 + 24 = 72
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Complete the solution set for this Inequality Use one of the symbols and one of the numbers from the choice below
Whitepunk [10]

Answer:

Its 5

Step-by-step explanation:

-3 * 5 = -15 , i.e smaller than 15.

3 0
3 years ago
Substitution again help please
Vesnalui [34]

Answer:

Step-by-step explanation:

1) 4x -3

x = -7 ;

4x - 3 = 4*(-7) - 3 = - 28 - 3 = -31

x = 14 ;

4x - 3 = 4*14 - 3 = 56 - 3 = 53

x = 0

4x - 3 = 0 - 3 = -3

2) 6 -3x

x = -7 ;

6 - 3x = 6 - 3*(-7) = 6 + 21 = 27

x = 14

6 - 3x = 6 - 3*14 = 6 - 42 = -36

x = 0

6 - 3x = 6 - 0 = 6

3) \dfrac{3x - 21}{7}\\\\x = -7\\\\\\\dfrac{3*(-7)-21}{7}=\dfrac{-21-21}{7}=\dfrac{-42}{7}=-6\\\\\\x = 14\\\\\dfrac{3*14-21}{7}=\dfrac{42-21}{7}=\dfrac{21}{7}=3\\\\\\x=0\\\\\dfrac{0-21}{7}=\dfrac{-21}{7}=-3\\\\

4)

\dfrac{3x}{7}-21\\\\\\x = -7\\\\\dfrac{3*(-7)}{7}-21=-3-21=-24\\\\\\x =14\\\\\dfrac{3*14}{7}-21=3*2-21=6-21=-15\\\\\\x=0\\\\\dfrac{0}{7}-21=-21

8 0
2 years ago
N - 8 &gt; 5 <br><br> A. n &gt; 13 <br> B. n &gt; 3 <br> C. n &gt; - 3 <br> D. n &gt; -13
statuscvo [17]

the answe is a- n>13

4 0
3 years ago
A car is traveling at a speed of 20 meters per second. What is the cars speed in kilometers per hour
IRISSAK [1]

Answer:

72 km/h

Step-by-step explanation:

We need to convert units

so:

20 m    -----  1 km -------- 3600 s

1 s         -----  1000 m ----1 h

and solve ot

20 x 1 x 3600 s = 72000  we multiply  numerators

1s x 1000 m x 1 h = 1000  we multiply denominators

we divide de results 72000/1000 = 72

4 0
3 years ago
Please help me !! thank you all
Finger [1]
Ok so basically.... 15^2= 9^2+ x^2

15*15

225= 81+x
-81. -81

144=x^2

12=X

Im pretty sure it’s right!
I used the formula A^2+B^2=C^2
8 0
3 years ago
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