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kompoz [17]
3 years ago
7

I am a rectangle, and my area is 80 square inches. My width is 2 inches shorter than my length. What is my perimeter?

Mathematics
2 answers:
pshichka [43]3 years ago
6 0
Area=l*b=l*(l-2)=80(given)

so, l^2 - 2l =80
   l^2 - 2l - 80=0
   l=10 or -8

l=10,b=10-2=8
perimeter=2(l+b)=2(18)=36
Mazyrski [523]3 years ago
3 0
8 of width, 10 of length, now 2(8) + 2(10)= 36 Inches

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If m< BCD = 54, find m< BAC
dmitriy555 [2]

m∠BAC = 27°

Solution:

ABCD is a quadrilateral.

AB and CD are parallel lines.

Given m∠BCD = 54°

AC bisect ∠BCD.

m∠DCA + m∠CAB = m∠BCD

m∠DCA + m∠DCA = 54°   (since ∠ACB = ∠DCA)

2 m∠DCA  = 54°

Divide by 2 on both sides, we get

m∠DCA  = 27°

AB and CD are parallel lines and AC is the transversal.

<em>If two parallel lines cut by a transversal, then the alternate interior angles are equal.</em>

m∠BAC = m∠DCA

m∠BAC = 27°

Hence m∠BAC = 27°.

7 0
3 years ago
Help please ASAP!!
Fittoniya [83]

Answer:

\displaystyle 702

Step-by-step explanation:

we are given a exponential function

\displaystyle f(x) =  {3}^{x + 1}  - 22

where x represents the number and f(x) represents the amount

we are also given that when x is 3 then f(x) is 59 likewise when x is 6 then f(x) is 2165

to figure out the average rate of change between 3 and 6 we can consider the average rate of change formula given by

\displaystyle m =  \frac{ f(x)_ {2} -  f(x)_{1} }{ x_{2} -  x_{1} }

substitute what we have:

\displaystyle m =  \frac{ 2165 -  59 }{6 - 3 }

simplify substitution:

\displaystyle m =  \frac{2106 }{3 }

simplify division:

\displaystyle m =  702

hence, the average rate of change between 3 and 6 is <u>7</u><u>0</u><u>2</u>

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2 years ago
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Cloud [144]
The two inequalities formed will be:
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x + y ≤ 600

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Equating x to 330,
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y = 265

Checking if the other inequality holds true:
330 + 265 ≤ 600
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This inequality is still true so they can sell 265 tickets on the event day and cover their expenses.
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3 years ago
A $70 dollar jacket is on sale for 25%. What is the new price?
nadya68 [22]
25% = 0.25
70*0.25 = 17.50
Subtract 17.50 from 70
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3 years ago
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icang [17]

Answer:

the answer is c

Step-by-step explanation:

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