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Alex_Xolod [135]
2 years ago
10

Help anyone 8th grade math need it asap

Mathematics
1 answer:
Step2247 [10]2 years ago
5 0

Answer:

The value of x = -13

Step-by-step explanation:

Given the expression

\frac{0.2x+1}{2}=-0.8

Multiply both sides by 2

\frac{2\left(0.2x+1\right)}{2}=2\left(-0.8\right)

simplify

0.2x+1=-1.6

Subtract 1 from both sides

0.2x+1-1=-1.6-1

Simplify

0.2x=-2.6

Divide both sides by 0.2

\frac{0.2x}{0.2}=\frac{-2.6}{0.2}

Simplify

x=-13

Therefore, the value of x = -13

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Cos(theta)= -.9041, 180degress< theta <270degress
AVprozaik [17]

Answer:

\theta=205.298^o

Step-by-step explanation:

We know

cos\theta=-.9041

in the third quadrant 180^o

We use a scientific calculator to find the inverse cosine of -0.9041 to find

\theta=154.702^o

Since this angle is not in the required quadrant we must find the other angle who has the same cosine. The required angle is equidistant from the found value from the 180 degrees angle, so our solution is

\theta=180^o+(180^o-154.702)=205.298^o

7 0
3 years ago
Use &lt;, &gt;, or = to compare the following <br> 5 and -8 <br> 7 and -11
MrRissso [65]

Answer:

5 > -8 , and 7 > -11

Step-by-step explanation

5 and 7 are greater than negative numbers

5 0
2 years ago
2,76<br> 5. Rationalize the denominator of the following: 2 root 6 divided by root 2 + root 3
rewona [7]

Answer:

6 √2 -4 √3

Step-by-step explanation:

Here, we want to rationalize the denominator of the following surdic fraction;

2√6/(√2 + √3)

To rationalize this, we have to multiply the numerator and the denominator by the conjugate of the denominator

The conjugate of the denominator is √2 - √3

So, we have the rationalization as follows;

2 √6(√2-√3)/(√2 + √3)(√2-√3)

Thus, we have

(4√3-6 √2)/(-1)

= 6 √2 -4 √3

8 0
2 years ago
15. Given the side measures, which of the following could form a triangle
alexdok [17]

Answer:

6,8,9

Step-by-step explanation:

6,8,9

any sum of two sides are bigger than the third side

7 0
3 years ago
Determine if its possible to form a triangle using the set of segments with the given measurement. explain please! 12 m, 5 m, 18
IRINA_888 [86]

Adding together the shorter two sides results in 17 m.  If these two sides were laid end to end, the sum of their sides (17 m) would be less than the length of the third side.  Thus, NO triangle could be constructed with this set of line segments.

6 0
3 years ago
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