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aleksandr82 [10.1K]
3 years ago
9

Here are 5 number cards 2 5 7 8 9 one of the cards is removes and the mean average of the remaining four number cards is 6. Whic

h card was removed? You must show your working
Mathematics
1 answer:
hram777 [196]3 years ago
3 0

Answer:

7

Step-by-step explanation:

If one of the cards is removes and the mean average of the remaining four number cards is 6, then their sum is 6\cdot 4=24.

The sum of all five cards is

2+5+7+8+9=31.

Since 31-24=7, then the card with number 7 is removed.

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Rewrite using a single positive exponent 5^6/5^4
Sindrei [870]

Answer:

<h2>5²</h2>

Step-by-step explanation:

We can divide exponents by subtract 4 from 6. So, now we have 5^2 or 25.

The other way to solve to check our answer is to do the math.

5^6 = 15625

5^4 = 625

15625/625 = 25

So, we know we have the correct answer.

5 0
3 years ago
What is the measure of what is the measure of (either 50,90,95, or 115)
Anuta_ua [19.1K]

Answer:

65 & 115

Step-by-step explanation:

<EGF = (180 - 50) /2 = 65 degree

<CGF = 180 - 65 = 115 degree

5 0
3 years ago
Which is larger, 7/10 or 3/4?
DIA [1.3K]
3/4 is larger than 7/10.
3 0
3 years ago
Read 2 more answers
The Polar Express
Igoryamba

Answer:

for 12-8: 33.33

or

for 8-4: 50

or

for 12-4: 66.67

Step-by-step explanation:

4 0
2 years ago
On a coordinate plane, 2 polygons are shown. Polygon A B C D has points (1, negative 6), (5, negative 6), (6, negative 2), and (
irga5000 [103]

Answer:

The correct option is;

Use a scale factor of 2

Step-by-step explanation:

The parameters given are;

A = (1, -6)

B = (5, -6)

C = (6, -2)

D = (0, -2)

A'' = (1.5, 4)

B'' = (3.5, 4)

C'' = (4, 2)

D'' = ( 1, 2)

We note that the length of side AB in polygon ABCD = √((5 -1)² + (-6 - (-6))²) = 4

The length of side A''B'' in polygon A''B''C''D'' = √((3.5 -1.5)² + (4 - 4)²) = 2

Which gives;

AB/A''B'' = 4/2 = 2

Similarly;

The length of side BC in polygon ABCD = √((6 -5)² + (-2 - (-6))²) = √17

The length of side B''C'' in polygon A''B''C''D'' = √((4 -3.5)² + (2 - 4)²) = (√17)/2

Also we have;

The length of side CD in polygon ABCD = √((6 -0)² + (-2 - (-2))²) = 6

The length of side C''D'' in polygon A''B''C''D'' = √((4 -1)² + (2 - 2)²) = 3

For the side DA  and D''A'', we have;

The length of side DA in polygon ABCD = √((1 -0)² + (-6 - (-2))²) = √17

The length of side D''A'' in polygon A''B''C''D'' = √((1.5 -1)² + (4 - 2)²) = (√17)/2

Therefore the Polygon A B C D can be obtained from polygon A''B''C''D'' by multiplying each side of polygon A''B''C''D'' by 2

The correct option is therefore;

Use a scale factor of 2.

3 0
3 years ago
Read 2 more answers
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