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hjlf
3 years ago
11

A scale drawing of a bedroom is shown below. The scale is 1 : 30.

Mathematics
2 answers:
LenaWriter [7]3 years ago
7 0
" = inches
' = feet

the scale is 1:30 
3" * 30" = 90"
4" * 30" = 120"

the room is 90" by 120"

90" / 12" = 7.5'
120" / 12" = 10'

the room is 7.5' by 10'

7.5' * 10' = 75' ^2
^ = exponential sign (10^2) means 10 to the second power.

The area of the room is 75' ^2
Brrunno [24]3 years ago
7 0

Answer:

<h2><u><em>he's right give him brainliest</em></u></h2>

Step-by-step explanation:

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LuckyWell [14K]
Y=-2x+4. is what it simplifies too. there is not enough info to solve
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Bernard a part of a small pizza he started with 11/12 of a pizza but only ate 2/3 of it which is the best estimate of the amount
sleet_krkn [62]

Answer:

Bernard ate a little less than Two-thirds of the pizza.

Step-by-step explanation:

i took the test

7 0
4 years ago
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A juice can is about 2.25 inches in diameter what is the circumference
solong [7]
About 7.07 inches. to get this do 2.25 x 3.14 (pi) to get about 7.07
4 0
3 years ago
Y is inversely proportional to d^2 When d=10 y=4 D is directly proportional to x^2 When x=2, d=24 Find a formula for y in terms
Sati [7]

Answer:

y = 1.44x⁴

Step-by-step explanation:

From the question,

Y∝d²

To remove the proportionality sign we introduce a constant.

Y = kd²............... Equation 1

make k the subject of the equation

k = Y/d²............. Equation 2

Given: Y = 4, d = 10

Substitute these values into equation 2

k = 4/10²

k = 4/100

k = 0.04

Substitute these value of k in equation 1

Y = 0.04d²................ Equation 3

Similarly,

d∝x²,

d = Cx²

make C the subject of the equation

C = d/x²................... Equation 4

Given:  d = 24, x = 2

Substitute into equation 4

C = 24/2²

C = 24/4

C = 6

Hence,

d = 6x²................... Equation 5

Substitute the value of d in equation 5 into equation 3

y = 0.04(6x²)²

y = 0.04(36x⁴)

y = 1.44x⁴

Hence the formula for y in terms of x is y = 1.44x⁴

6 0
3 years ago
A rug is 3 feet longer than 5 times the width. The area of the rug is 92 square feet. What are the dimensions of the rug?
Rzqust [24]

Answer:

36

Step-by-step explanation:

L=W+5

Area=LW

36=(W+5)W

36=W^2+5W

W^2+5W-36=0

(W+9)(W-4)=0

W-4=0

W=4 ANS. FOR THE WIDTH.

L=4+5=9 ANS. FOR THE LENGTH.

PROOF:

36=9*4

36=36

I hope this helped! ;)

4 0
3 years ago
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