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olganol [36]
3 years ago
8

Taylor is experimenting with the area of rectilinear shapes. She says, "If a shape has an area of 19 cm2, the length of it could

be 38cm.
Is she correct? Explain why.
Mathematics
1 answer:
My name is Ann [436]3 years ago
7 0

Answer:

Step-by-step explanation:

Recall that the formula for the area of a rectangle of length L and width W is

A = LW.  

What if the area is 19 cm^2 and the length is 38 cm?  Solving the above equation for W, we get

W = A/L

and if we let A = 19 cm^2 and L = 38 cm, then W would be W = (19 cm^2) ? (38 cm) = (1/2) cm.  The rectangle would be very narrow, but certainly possible.

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Pls helpppp and thank you
Nookie1986 [14]
If the question is y = blank(x) + blank (I can’t see the left of the equation
Then the answer is y = 2x + -4
3 0
2 years ago
Frankie paid $11.75 for the movie tickets and $4.75 for popcorn and drink. How much did Frankie spend?
olasank [31]

Answer:

he spent $16.5

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
What is the hypothesis of a triangle with a base of 11cm and height of 9cm
natima [27]

<u>Answer:</u>

<h2>14.21 cm</h2>

<u>Explanation:</u>

you mean the hypotenuse* lol

the hypotenuse = √(11²+9²)

the hypotenuse = √(121+81)

the hypotenuse = √(202)

the hypotenuse ≈ 14.21 cm

3 0
2 years ago
Two streets bounding your triangular lot make an angle of 74∘. The lengths of the two sides of the lot on these streets are 126
ycow [4]

Answer: a) Yes, there is enough fance

b) 58.1° and 47.9°

c) The city will not approve, because 1/3 of the area is just 2220.5ft²

Step-by-step explanation:

a) using law of cosines: x is the side we do not know.

x² = 126² + 110² - 2.126.110.cos74°

x² = 20335.3

x = 142.6 ft

So 150 > 142.6, there is enough fance

b) using law of sine:

sin 74/ 142.6 = sinα/126 = sinβ/110

sin 74/ 142.6 = sinα/126

0.006741 = sinα/126

sinα = 0.849

α = sin⁻¹(0.849)

α = 58.1°

sin 74/ 142.6 = sinβ/110

sin 74/ 142.6 = sinβ/110

0.006741 = sinβ/110

sinβ = 0.741

β = sin⁻¹(0.741)

β = 47.9°

Checking: 74+58.1+47.9 = 180° ok

c) Using Heron A² = p(p-a)(p-b)(p-c)

p = a+b+c/2

p=126+110+142.6/2

p=189.3

A² = 189.3(189.3-126)(189.3-110)(189.3-142.6)

A = 6661.5 ft²

1/3 A = 2220.5

So 2300 >  2220.5. The area you want to build is bigger than the area available.

The city will not approve

7 0
3 years ago
b. Demonstrate that the two expressions are equivalent by substituting a with the value of 4, and then complete the sentence bel
11Alexandr11 [23.1K]

Answer

2x+5=43

Step-by-step explanation:

5 more than 2 times a number is 43

3 0
3 years ago
Read 2 more answers
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