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STatiana [176]
3 years ago
7

The blueprint for the Daly Daly​'s living room has a scale of 2 inches=3 feet. The family wants to use a scale of 1 inch equals

= 5 feet. What is the width of the living room on the new​ blueprint?
Mathematics
1 answer:
denpristay [2]3 years ago
7 0

Answer:

5X ft

Step-by-step explanation:

Given the new scale of 1 inch equals = 5 feet

let X denote the width of the living room on the blueprint.

To find the width of the living room:

Width=Blueprint \ Dimensions \times scale\\\\=X times 5ft\\\\=5X \ ft

Hence the living room has a width of 5X ft

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A countertop is in the shape of a trapezoid. The lengths of the bases are 70.5 and 65.5 inches long. The height of the counterto
den301095 [7]
The answer is 1224. You do 70.5 + 65.5, divided by two, then you take that answer and multiply by 18 to get 1224
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3 years ago
A tax assessor wants to assess the mean property tax bill for all homeowners in a certain state. From a survey ten years ago, a
Jet001 [13]

Answer:

The answer is below

Step-by-step explanation:

From the table, the mean (μ) = 1390.75 and the standard deviation (σ) = 518.75

The confidence level (C) = 90% = 0.9

α = 1 - C = 1 - 0.9 = 0.1

α/2 = 0.1 / 2 = 0.05

The z score of α/2 (0.05) is the same as the z score of 0.45 (0.5 - 0.05) which is equal to 1.645.

The margin of error (E) is given as:

E=Z_\frac{\alpha}{2}*\frac{\sigma}{\sqrt{n} }  \\\\E=1.645*\frac{518.75}{\sqrt{14} } =228.07

The confidence interval = μ ± E = 1390.75 ± 228.07 = (1162.68, 1618.82)

The confidence interval is between 1162.68 and 1618.82.

7 0
3 years ago
NEED HELP!!!!<br><br> Please
AnnZ [28]

Answer:

# 1,3 and 6

Step-by-step explanation:

4 0
2 years ago
What is the value of y in the solution to the system of equations?x y = 12x – 3y = –30
zhenek [66]
X + y = 12 . . . . . . . . (1)
x - 3y = -30 . . . . . . . (2)
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8 0
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Read 2 more answers
What is (x+6)(x+4)(x-3) expand and simplify
mestny [16]

Answer:

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Step-by-step explanation:

Given

(x + 6)(x + 4)(x - 3) ← expand the second and third factor, that is

(x + 4)(x - 3)

Each term in the second factor is multiplied by each term in the first factor, that is

x(x - 3) + 4(x - 3) ← distribute both parenthesis

= x² - 3x + 4x - 12 ← collect like terms

= x² + x - 12

Now multiply this by (x + 6) in the same way

(x + 6)(x² + x - 12)

= x(x² + x - 12) + 6(x² + x - 12) ← distribute both parenthesis

= x³ + x² - 12x + 6x² + 6x - 72 ← collect like terms

= x³ + 7x² - 6x - 72

7 0
3 years ago
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