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Vlad1618 [11]
3 years ago
14

3. Sophie and Jackie each have a collection of baseball cards, Jackie has 5 more cards than

Mathematics
1 answer:
IRISSAK [1]3 years ago
5 0

Answer:

Sophie has 12.5 cards

Step-by-step explanation:

Let

x -----> number of cards Sophie has

y -----> number of cards Jackie has

we know that

x+y=30 -----> equation A  

y=x+5 -----> equation B

Solve by substitution

Substitute equation B in equation A and solve for x

x+(x+5)=30

2x=30-5

x=12.5 cards

Note I assume the problem was invented without taking into account the result, because the amount of cards should be a whole number

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A tabletop in the shape of a trapazoid have an area of 6550 square centimeters. its longer base measures 115 centimeters, and th
Arturiano [62]
A= 1/2 h ( sum of bases) SUBSTITUTE 6550= 1/2h (115+85) 6550=1/2h (200) 6550= 100h 65.5= h height is 65.5 cm Hope this helps
3 0
3 years ago
Some one help please
alisha [4.7K]

I can’t see that ....

4 0
3 years ago
3√12•√6<br><br>please show a step by step explanation ​
Oduvanchick [21]

Answer:  18\sqrt{2}\\\\

This is the same as saying 18*sqrt(2) or you could say 18√2

============================================================

Explanation:

We'll be using this square root rule: \sqrt{A}*\sqrt{B} = \sqrt{A*B}

So we could have this as our steps:

3\sqrt{12}*\sqrt{6}\\\\3\sqrt{12*6} \ \text{ ... Apply the rule mentioned}\\\\3\sqrt{72}\\\\3\sqrt{36*2}\\\\3\sqrt{36}*\sqrt{2} \ \text{ ... Apply the rule again, but in reverse}\\\\3*6*\sqrt{2}\\\\18\sqrt{2}\\\\

Therefore, 3\sqrt{12}*\sqrt{6} = 18\sqrt{2}

The basic idea is to first combine the roots using that rule. From there, we factor the radicand such that we pull out the largest perfect square factor. This will allow us to break the root apart and fully simplify it.

5 0
3 years ago
Can someone help me pleasee
Komok [63]

Answer:

Erich planted 7 seeds ...

he had to remove 17 plants ....

he expected to have less or equal 46 plants ...

Step-by-step explanation:

Look at keywords like remove ~ => which indicates that something is being subtracted

Since x represents seed packets, and the amount he planted is a number multiplied by x, we can deduce he planted 7 seeds ( 7 * x)

8 0
2 years ago
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Anna71 [15]
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0.9874~1.0
5 0
3 years ago
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