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mr Goodwill [35]
2 years ago
7

Simplify the expression -2 (x + 4 + 5y).

Mathematics
1 answer:
dezoksy [38]2 years ago
5 0

Answer:

-2x-10y-8

Step-by-step explanation:

Rearange terms

-2(x+4+5y)

-2(x+5y+4)

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In a survey 27% of the people chose salads over a meat dish and in all 81 people chose salads. How many people were in the surve
Kobotan [32]
27%=27/100


so 27/100=81/x


27x=8100  divide by 27
x=300

that the answer

6 0
3 years ago
Determine whether the following lines represented by the vector equations below intersect, are parallel, are skew, or are identi
KiRa [710]

Answer:

r(t) and s(t) are parallel.

Step-by-step explanation:

Given that :

the  lines represented by the vector equations are:

r(t)=⟨1−t,3+2t,−3t⟩

s(t)=⟨2t,−3−4t,3+6t⟩

The objective is to determine if the following lines represented by the vector equations below intersect, are parallel, are skew, or are identical.

NOTE:

Two lines will be parallel if \dfrac{x_1}{x_2}= \dfrac{y_1}{y_2}= \dfrac{z_1}{z_2}

here;

d_1 = (-1, \ 2, \ -3)

Thus;

r(t) = \dfrac{x-1}{-1} = \dfrac{y-3}{2}=\dfrac{z-0}{-3} = t

d_2 =(2, \ -4, \  +6)

s(t) = \dfrac{x-0}{2} = \dfrac{y+5}{-4}=\dfrac{z-3}{6} = t

∴

\dfrac{d_1}{d_2}= \dfrac{-1}{2} = \dfrac{2}{-4}= \dfrac{-3}{-6}

Hence, we can conclude that r(t) and s(t) are parallel.

6 0
3 years ago
The sum of two consecutive odd integers is at most 166. What are the greatest consecutive odd integers?
bagirrra123 [75]
. x + (x + 2)≤166
. 2x+2≤166
. x≤83 - 1
. x≤82
. x=81
. 81+(81+2)=164;  164<166
answer: 81 and 83
4 0
3 years ago
Solve for w.<br> 8= 4 + w
Yuri [45]
W=4 that the answer !!!!!
3 0
3 years ago
Evaluate st if s = -4 and t = 9
Allisa [31]
St meaans s times t
s=-4
t=9
st=-4 times 9
negative times positive=negative
4 times 9=36
-4 time s9=-36
st=-36
answer is -36
4 0
3 years ago
Read 2 more answers
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