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Solnce55 [7]
2 years ago
7

Please help with khan

Mathematics
2 answers:
nataly862011 [7]2 years ago
8 0

Answer:

C

Step-by-step explanation:

she solved it correct by subtracting 7.5 from both sides

vladimir2022 [97]2 years ago
4 0

Answer:

he made an mistake in step one

Step-by-step explanation:

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I need this urgently!! I need by 7:15!!
Sati [7]

The question is telling you that the length of the rectangle is 3 metres more than twice the width.

So let:

<em>w= width</em>

<em>L= length</em>

Because the length is 3 metres more than twice<em> </em>the width: <em>L= </em><em>2</em><em>w+</em><em>3</em>


They also tell you the perimeter is 48 metres.

<em>P= L+L+w+w</em>

So the equation of the perimeter is:

<em>48= (2w+3)+(2w+3)+2w +2w</em>

<em>48= 2(2w+3) + 4w</em>


To find w, expand and simplify.

<em>48= 4w+6+4w</em>

<em>48= 8w + 6</em>

<em>42= 8w</em>

<em>5.25=w</em>


Now that you know the width, plug in the value into the length equation:

<em>L= 2w+3</em>

<em>L=2(5.25)+3</em>

<em>L=10.50+3</em>

<em>L=13.5</em>


If I am wrong let me know! I hope this helps.

6 0
3 years ago
Kelsey has already spent 42 minutes on the phone, and she expects to spend 2 more minutes
grandymaker [24]

Answer:

11 calls

Step-by-step explanation:

She has already spent 42 min. Also she wants to talk for 2 min per call. We can change calls on x. So, only 2x min for her calls left.

42 + 2x = 64

2x = 64 - 42

2x= 22

x=11

Answer: 11 calls

8 0
3 years ago
If a barber is capable of cutting the hair of 35 people per day and he works 7 days per week, how many haircuts could he give du
Pavel [41]
June=1,225
April=1,225
May=1,225

All June April and May is 3,675 haircuts
6 0
3 years ago
HELP ME PLEASE I NEED THIS &lt;3333
WITCHER [35]

Answer:

214°

Step-by-step explanation:

The arc subtending an angle at the centre are equal, that is

arc ED = 90° and

arc DF = 360° - (90 + 146)° = 360° - 236° = 124°

Thus

arc EDF = arc ED + arc DF = 90° + 124° = 214°

4 0
3 years ago
Write an expression for the sequence of operations described below.
BabaBlast [244]

Answer:

No entiendo por qué está en ingles

4 0
3 years ago
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