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Anvisha [2.4K]
3 years ago
6

What is the value of the expression 2z ÷ [z – (z – 4)] when z = 8?

Mathematics
1 answer:
podryga [215]3 years ago
6 0

2z ÷ [z – (z – 4)]

Sub z=8 into the expression

2(8) ÷ [8 – (8 – 4)] = 16 ÷ 4

                             = 4

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Higher Order Thinking a carpenter plans to extend the length of rectangular desk by 7 feet. Let x represent the desk's original
abruzzese [7]

Answer:

d. 9x + 63 and 63 square feet

Step-by-step explanation:

Given

Original

Length = x

Width = 9

Extended

Length = x + 7

Width = 9

Area = 9(x + 7)

Required

Determine an expression and the value of the extended area

First, we calculate the area of the original desk

A_1 = x * 9

A_1 = 9x

From the given parameters, we have:

Area = 9(x + 7) --- area of the new surface

Open bracket

Area = 9x + 63

The area of the new surface is the summation of the area of the original desk and the area of the extended portion (E)

So:

Area = A_1 + E

Make E the subject

E= Area - A_1

E= 9x + 63 - 9x

E= 63

Hence, the area of the extended portion is 63

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3 years ago
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Sliva [168]
Warmer in Columbus, Ohio
4 0
3 years ago
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Kimberly began running 3 years ago.she has spent $832 on 13 pairs of running shoes during this time.how much on average did each
grandymaker [24]
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3 years ago
Lee is creating a garden with the dimensions shown.
den301095 [7]

Answer:

AB= 12.94ft, 108deg

ZY= 6.76ft 50deg

XY 3.05ft, 22deg

Pathway adds up to 22.95ft

Step-by-step explanation:

AB is base

Sides 8 feet each = isosceles. =8ft, 8ft, 12.94ft

Top angle is 36 degree = 36°.36°,108°

ZY is base

Sides 8 feet each = isosceles = 8ft, 8ft, 6.76ft

Top angle is 65° = 65° 65° 50 °

XY is base

Sides 8 feet each =isosceles =8ft, 8ft, 3.05ft

Top angle is 79° degree = 79°,79 °,22 °

Pathway means triangles in a row side by side = Product of 3 values = ? feet

12.94 +6.76 + 3.05 =22.95ft pathway

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3 years ago
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