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Alexandra [31]
3 years ago
10

What value of W is a solution to this equation? W + 7 = 12

Mathematics
1 answer:
Talja [164]3 years ago
4 0

Answer:

w=5

Step-by-step explanation:

Due to the subtraction property of equality, you have to subtract 7 from both sides to isolate the W.

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A campground owner has 24002400 m of fencing. he wants to enclose a rectangular field bordering a​ river, with no fencing along
Free_Kalibri [48]
We define variables:
 x = represent the width of the field
 y = represent the length of the field
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 We clear y:
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 Answer:
 
an expression for the length of the field as a function of x is:
 
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4 0
3 years ago
If 3a-2b= 8 and a+3b=7 what is the value of 4a+b?
Fittoniya [83]
Step 1: Find the value of one variable in terms of the other.

a+3b=7\\a=7-3b

Step 2: Substitute the value you just found for this variable in the other equation.

3a-2b=8\\3(7-3b)-2b=8\\21-9b-2b=8\\21-11b=8\\21=8+11b\\13=11b\\\frac{13}{11}=b\\ b=1\frac{2}{11}

Step 3: Use your new value for the second variable to find the first.

a+3b=7\\a+3(1\frac{2}{11})=7\\a+3\frac{6}{11}=7\\\\a=3\frac{5}{11}

Now that we know the values for a and b we can find the value of 4a+b.

4a+b\\4(3\frac{5}{11})+1\frac{2}{11}\\12+\frac{20}{11}+1\frac{2}{11}\\\\12+1\frac{9}{11}+1\frac{2}{11}\\\\\boxed{15}
6 0
3 years ago
Amy spends 30% of her money on a
ioda

Answer:

£2.00

Step-by-step explanation:

Badly worded, as they oftena are! But to me it means

30% spent

60% saved (I.e also taken away and put somewhere else)

10% leftover equals 20p

So 20p equals 10% of what she originally had, so 100% must be £2.00, does that make sense?

8 0
2 years ago
What's the expression for subtract 20 divided into fourths from 55 divided into fifths
alexira [117]
The expression is 55/5 - 20/4
11-5
the answer is 6
5 0
3 years ago
Shelia is dividing x4 – 4x3 + 4x2 – 6x + 5 by x – 1 using a division table. Quotient Divisor x3 – 3x2 + x – 5 x x4 –3x3 x2 A – 1
Hatshy [7]
Is there by answer choice? Or by a table?
4 0
3 years ago
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