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tigry1 [53]
3 years ago
8

8+—3(6+—6a) help please

Mathematics
1 answer:
LenKa [72]3 years ago
5 0
We know that:

(+)+(-)=(-)

and:

(-)*(+)=(-)

8+(-3)[6+(-6a)]=8+(-3)*6+(-3)*(-6a)=8-18+18a=(-10)+18a

if you have solve for a then:

(-10)+18a=0
18a=10
a= \frac{10}{18}
a=\frac{5}{9}

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7(2 + 3) − 4 · 2 2 <br><br> the second two is up in the air fyi
AfilCa [17]

Answer:

19

Step-by-step explanation:

7(<u>2 + 3</u>) − 4 · 2² ← like that right so

<u>parenthesis first add the numbers up↓</u>

7(5) - <u>4</u> · 2²

write number in exponential form↓

<u>7(5)</u> - 2²· 2²

multiply↓

35 - <u>2² · 2²</u>

calculate the product↓

35 - <u>2⁴</u>

evaluate the power↓

35-16

then subtract↓

19

7 0
2 years ago
The angle of depression from the hot-air
BlackZzzverrR [31]

Answer:

3497.47 feet

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\sin(32 = opposite \6600)

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3 0
1 year ago
I don't get this it hard!!!!!!!!!
asambeis [7]
I don't think that anybody in Elementary School would Understand this you might want to post this question in the High School section.

Hope it gets answered :)
7 0
3 years ago
Read 2 more answers
Please help I need help
Naddika [18.5K]
I don’t know what it is
3 0
2 years ago
what are the ex and Y coordinates of point E, which partition the directed line segment from A to B into a ratio of 1:2?
Paul [167]

Answer:

Step-by-step explanation:

The formula for this is the one we use when we are given the ratio the directed line segment is separated into as opposed to the point being, say, one-third of the way from one point to another. The 2 equations we use to find the x and y coordinates of this separating point are:

x=\frac{bx_1+ax_2}{a+b}  and  y=\frac{by_1+ay_2}{a+b} where x1, x2, y1, y2 come from the coordinates of A and B, and a = 1 (from the ratio) and b = 2 (from the ratio). Filling in for x first:

x=\frac{2(2)+1(-4)}{1+2}=\frac{4-4}{3}=0 and then y:

y=\frac{2(-3)+1(9)}{1+2}=\frac{-6+9}{3}=\frac{3}{3}=1

The coordinates of point E, then, are (0, 1).

6 0
2 years ago
Read 2 more answers
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