3 years ago

Can someone please help me solve this (7th grade math)

Mathematics

2 answers:

Alina [70]3 years ago

5 0

8x = 72

It’s this because you are subtracting 14 from both sides so that it’s eliminated and then you can solve for x

Reil [10]3 years ago

3 0

Answer: 8x = 72

Step-by-step explanation:

and in case you need to go any further at any point, <em>x = 9</em>

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What is the slope of a line perpendicular to the line whose equation is 3x+y=-5

julsineya [31]

Answer:

tdy

Step-by-step explanation:

tyzey

7 0

3 years ago

Find the length of DE. Round to the nearest hundredth. (Picture included)

LenKa [72]

Notice the picture
we have, the opposite side
the angle
and we want the hypotenuse

so recall your SOH CAH TOA $\bf sin(\theta)=\cfrac{opposite}{hypotenuse}
\qquad \qquad 
% cosine
cos(\theta)=\cfrac{adjacent}{hypotenuse}

\\ \quad \\\\
% tangent
tan(\theta)=\cfrac{opposite}{adjacent} =$

which one has all that? low and behold, is Ms Sine,
so let's bother Ms Sine

$\bf sin(\theta)=\cfrac{opposite}{hypotenuse}\implies sin(27^o)=\cfrac{18}{hypotenuse}
\\\\\\
hypotenuse=\cfrac{18}{sin(27^o)}$

make sure your calculator is in Degree mode, since the angle here is in degrees, as opposed to Radian mode