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3 years ago

15-z=6 I need help please show work

Mathematics

1 answer:

solniwko [45]3 years ago

4 0

Answer:

z= -9

Step-by-step explanation:

Subtract 15 on both sides, because it is a positive number

15-15=0

6-15=-9

z= -9

Hope this helps!

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If the sin 30° is 1 over 2, then the cos ____° = _____. (4 points) 60° ; 1 over 2 30° ; square root 2 over 2 60° ; square root 3

umka21 [38]

Step-by-step explanation:

$\sin 30 \degree = \cos 60 \degree = \frac{1}{2} \\$

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2 years ago

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Choose the equation of the horizontal line that passes through the part point (1,-5)

vladimir2022 [97]

We know is a horizontal line, so, if it passes through 1,-5, it also passes through "whatever", -5, like 20, -5 or 1000000, -5, or -100000000, -5 and so on.

so, let's pick another point say -7, -5, check the picture below, and let's check about the equation that runs through it,

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~ 1 &,& -5~) 
% (c,d)
&&(~ -7 &,& -5~)
\end{array}
\\\\\\
% slope = m
slope = m\implies 
\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-5-(-5)}{-7-1}
\\\\\\
\cfrac{-5+5}{-7-1}\implies \cfrac{0}{-8}\implies 0
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-(-5)=0(x-1)
\\\\\\
y+5=0\implies y=-5$

4 0

3 years ago

Read 2 more answers

HELP ME PLEASEEEEEEEEEE

arsen [322]

Answer:

(5,-4)

Step-by-step explanation:

Move the point T three units to the right. It's (x, y), so (5,-4) is the answer.

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2 years ago

Please answer. Thank you.

Aloiza [94]

Answer:

Step-by-step explanation:

Graph shows constant change between the weight and the cost.

3/2.25 is 1.33333333

4/3 is 1.3333333

5/3.75 is 1.3333333 as well.

Others are not constant.

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2 years ago

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IrinaK [193]

Answer:

6.28

Step-by-step explanation:

1/2 x 3.14 x 2^2 = 6.28

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3 years ago