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3 years ago

The length of a rectangle is 4 more than the width. Find the width of the rectangle if the area is 32.

Mathematics

1 answer:

Serggg [28]3 years ago

7 0

Answer:

length = 8

width = 4

Step-by-step explanation:

Area = length x breadth

Let x represent the width

length = x + 4

32 = x × (x + 4)

32 = x² + 4x

x² + 4x - 32 = 0

solving using quadratic equation =

(x² - 4x) -32 + 8x

x = 4 or -8

since width cannot be a negative number, we would use 4

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If f(x)=7-3x and g(x)=3x-7, what is the value of f(1)-g(1)?

postnew [5]

Substitute 1 for x in each of your equations.

f(x)=7-3x
which is
f(1)=7-3(1)
=3
Do the same for g(x)
g(x)=3x-7
which is
g(1)=3(1)-7
=-4

Then subtract g(x) from f(x):
3-(-4)
=7

:)

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3 years ago

I need help on this question can anyone explain to me the answer?

raketka [301]

Answer:

Option C, $y = \frac{1}{10} x+1$

Step-by-step explanation:

We can find the correct answer by plugging in the x and y values of a point on the graph into each option, then finding the one that gives a true statement as a result.

For example, one point on the graph is (30,4). We can substitute 30 for the x and 4 for the y in option C's equation, $y = \frac{1}{10} x+1$ . Then, simplify:

$y = \frac{1}{10} x+1\\4 =\frac{1}{10} (30)+1\\4 = \frac{30}{10} +1\\4 = 3 +1\\4 = 4$

4 does equal 4, so when we substitute a point from the graph into this equation, the result is a true statement. Thus, option C is the answer.

4 0

2 years ago

The sum of 5 times a number and 4 is equal to 6

g100num [7]

Answer:

5(x+4)=6

5 times a number and (+) 4 is equal to 6.

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2 years ago

Can someone please help me on this one?

tensa zangetsu [6.8K]

8 is the correct answer

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2 years ago

Read 2 more answers

The owner of Sack of Suds paid his cashier $60 when he was actually owed only $42. What was the

OLga [1]

Answer: 42.9%

Step-by-step explanation:

Percent error is the difference between the measured and known value, which is divided by the known value, and then multiplied by 100%.

Percent error = (Estimated number- Actual number)/Actual Number × 100.

= (60 - 42)/42 × 100

= 18/42 × 100

= 0.429 × 100

= 42.9%

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3 years ago