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3 years ago

A. Find and explain the error in the work shown.

Mathematics

1 answer:

Marizza181 [45]3 years ago

5 0

The error is that they had placed the numbers in the wrong placeholder. Remember that the Distance formula is $D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ .

Correct Work:

$D=\sqrt{(5-(-1))^2+(16-15)^2}\\D=\sqrt{6^2+1^2}\\D=\sqrt{36+1}\\D=\sqrt{37}\ \approx 6.08$

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Need help please please i need help thanks

Nadusha1986 [10]

Answer:

1) 6 balls

Step-by-step explanation:

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2)2) 20x (3÷ 4)=90 120-90=30 thus left seat has 30 seating capacity.

3)Let x & y be packets of [a] type & [b] type detergent sold

Then 9x +7y =180

Let us say x=7

Then 9*7+7y =180

7y =180–63 = 117

y =117/7=19.2 this will not do as it contains decimal not whole number

Say x=6

Then 9*6 +7y =180

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Answer: 6 packets of (a) and 18 packets of type (b) were sold to get 180Php

4) 5,6,7 female piglets

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2 years ago

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If x = -12, y = -3; find xy?

wolverine [178]

Given that :- 

x = -12
y = -3

To Find :- 

Value of xy

Solution :- 

☆ When a negative digit is multiplied with negative digit then the result comes as positive digit .

→ x × y = (-12)(-3)

→ x.y = 36

So the answer is 36.

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3 years ago

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What are the solutions of x^2 + 6 x - 6 = 10?

aleksandrvk [35]

Answer:

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Hope this helps :)

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The volume of a right circular cylinder is 1100 cm3 and the radius of its base is 5 cm. Calculate its curved surface area.

Scorpion4ik [409]

Answer:

Step-by-step explanation:

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V = πr²h

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1100 = π(5²)h
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44 = πh

Curved surface area:

S = 2πrh = 2*5*πh = 10*44 = 440 cm²

Correct choice is C

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3 years ago

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Which statements are true about the triangle? Select all that apply.

Bogdan [553]

Answer:

The triangle is obtuse.

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Obtuse triangles are defined as triangles with one angle obtuse angle over 90°. This triangle has an angle of 100°, so it is an obtuse triangle!

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