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3 years ago

Select the proper placement for parentheses to speed up the addition for the expression 4 + 6 + 5

Mathematics

2 answers:

nata0808 [166]3 years ago

6 0

Im guessing that by making 10 it will speed up the addition process so it should be
B since (6+4) = 10 then +5 =15

vlabodo [156]3 years ago

6 0

The answer is B becuase 6+4=10 10+5=15

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Complete the equation of the line through (-6, -5) and (-4, -4). Use exact numbers

77julia77 [94]

In general the equation through (a,b) and (c,d) is

$(y-b)(c-a)=(x-a)(d-b)$

Can you see that this is a line and that both (a,b) and (c,d) are on it?

Here we're given (a,b)=(-6,-5) and (c,d)=(-4,-4)

$(y- -5)(-4 - -6) = (x - -6)(-4 - 5)$

$2(y+5)=x+6$

$2y + 10 = x + 6$

$x - 2y = 4$

$y = \frac 1 2 x - 2$

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3 years ago

Given circle E with diameter CD and radius EA. AB is tangent to Eat A.

faust18 [17]

The hypotenuse is equal to the square of the other two sides. The length of AC from the diagram is 21.9feet

<h3>Application of pythagoras theorem</h3>

The theorem states that the square of the hypotenuse is equal to the square of the other two sides

Given the following

Hypotenuse = 26 feet = CD
Base side = AD = 14ft

Required

Length AC

Use the theorem

26^2 = 14^2 + AC^2

AC^2 = 676 - 196
AC^2 = 480
AC = 21.9feet

Hence the length of AC from the diagram is 21.9feet

Learn more on pythagoras theorem here: brainly.com/question/343682

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Marat540 [252]

Answer:

Area = 530 cm^2

Step-by-step explanation:

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The time between a lighting flash and the following thunderclap may be used to estimate, in kilometers, how far away a storm is.

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