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Effectus [21]
4 years ago
12

1) 5z + 4 = 19 What is the answer for this question

Mathematics
1 answer:
Andreas93 [3]4 years ago
8 0
5z=19-4
5z=15
z=15/5
z=3
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One-fifth of an unknown number is 16. What is the unknown number?
makkiz [27]

Answer:

It would be 80.

Step-by-step explanation:

You could use the inverse operation to find the number which would be

16 x 5 = 80. You can also inverse it to find the answer.

80/5=16. Hope this helps!

6 0
3 years ago
There are 2.54 centimeters in 1 inch. How many centimeters are there in 1 foot? In 1 yard? Explain your reasoning.
Dmitry [639]

1 inch = 2.54 centimeters

1 foot = 12 inch

1 inch = 2.54 cm

12 inch = 12times 2.54 cm = 30.48 cm

Answer 1 foot = 12 inch = 12times 2.54 = 30.48 cm

* we know 1 yard = 3 foot

1 foot = 12 inch

1 inch = 2.54 cm

Answer : so 1 yard = 3 foot = 3* 12 inch = 36 * 2.54 cm =91.44 cm

6 0
3 years ago
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What are the dimensions of a rectangular tract of land when its perimeter is 66 kilometers and its area is 260 square kilometers
Nikitich [7]
The longer sides are 20 kilometers, and the shorter sides are 13 kilometers. 
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7 0
4 years ago
Ayo i have one math question show correct work and get it right=brainliest
Jlenok [28]

Answer:

y = 8

Step-by-step explanation:

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3 0
3 years ago
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Show that triangle BCD is isosceles
Sati [7]
∠A = 36
∠C =36
∠ADB =72°
∠CBD =36°
∠BDC =108°

Explanation:

AB=AD then ∠ABD & ∠ADB must be equal as they share two lines that are equal so ∠ADB=72°

∠A and ∠C must also be equal (AB=BC)
∠A = 180-72-72=36°
So ∠A & ∠C=36°

∠D=180° (straight line)
So if ∠ADC=72
∠BDC=108° (180-72)

A triangle has 180° so in triangle BDC we have 108° and 36°
So remaining angle (∠CBD) =180-108-36
=36°

This tells us that triangle BDC is isosceles as it has two equal angles ∠CBD & ∠C =36°

5 0
3 years ago
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