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fredd [130]
3 years ago
9

kim is 10 years older than laura. laura is twice as old as melissa. if melissa will be 1o years old in 5 years, how old is kim n

ow
Mathematics
2 answers:
Sergio039 [100]3 years ago
7 0

Answer:

Kim is 20 years old

Step-by-step explanation:

We have to make equations;

Kim= laura+10 so L+10

Laura is twice as old as Melissa so Laura will be

2 X M = 2M

<h2>Melissa is 5 years old now </h2>

Input values in to the equation

<h2>2M = 2X5= 10 years old (Laura)</h2>

As Kim is 10 years older than Laura it will be 10+10

<h3>which will give the answer of 20 </h3>

ehidna [41]3 years ago
5 0

Answer: Kim is now 20 years old

Step-by-step explanation:

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a rectangle has a length if x + 7 centimeters. The perimeter of the rectangle is 23 centimeter. What is the value of x
Tems11 [23]

23 = 14 + 2x
reasoning \: for \: each \: term \: in \: the  \\ \: above \: equation\\  \\ p = 23 \\  14 = 7 \times 2 \\ 2x = 2 \times x
\:  \:  \:  \:  \: 23 - 14 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 14 + 2x - 14 \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  9 = 2x
\:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 9  \div 2 \:  \:  \:  \:  \:  \:  \:  \:  \: 2x \div 2 \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 4.5 = x
So, the answer is 4.5
8 0
3 years ago
Is 2 a perfect square ?
wel

Answer:

yes

Step-by-step explanation:

5 0
2 years ago
What is negative 48 plus 14
leva [86]

Answer: negative 34

Step-by-step explanation:

just take away 14 to 48 and put a negative infront

7 0
2 years ago
What is 5x5 cause I don’t know what it is
grigory [225]

Answer:

25

Step-by-step explanation:

5 + 5 + 5 + 5 + 5 = 25

6 0
2 years ago
Read 2 more answers
46:34
Mashcka [7]

Answer:

The first 2

Step-by-step explanation:

First expression = -4+30-3 =23

Second expression = 8(10+4)= 112.

The others would lead to a negative number.

Remember negative times negative = positive

Negative times negative times negative = negative

4 0
3 years ago
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