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mafiozo [28]
3 years ago
15

Please help me this is impossible

Mathematics
2 answers:
ratelena [41]3 years ago
7 0
1. Combine like terms, so add 2.4 to -4.8 to get -2.4
So now you should be left with .02(x+20)-2.4=-9
2. Now eliminate the -2.4 by adding 2.4 to both sides, getting .02(x+20)=-6.6
3. Multiply everything by 50 to make x+20=-333, since 50×.02=1
4. subtract 20 from both sides to get x=-353
Alex Ar [27]3 years ago
3 0

We need to distribute the parenthesis before we do anything. 0.02(x+20)=0.02x+0.4; now let's put this into the equation.

2.4+0.02x+0.4-4.8=-9; this is all about making sure we get x on one side, isolated. We need to add all the like terms.

0.02x-2=-9; let's add 2 to both sides. 0.02x=-7; let's divide each side by 0.02 so that we can have x by itself. x=-350; let's plug -350 in as in the original equation to make sure that is our answer.

2.4+0.02(-350+20)-4.8=-9; let's add the parenthesis. 2.4+0.02(-330)-4.8=-9; let's multiply. 2.4-6.6-4.8=-9; let's subtract. 2.4-6.6=-4.2-4.8=-9

So, x=-350.

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Step-by-step explanation:

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Angle JKL is an equilateral triangle jk=13x+5 KL=17x-19 and JL=8x+35
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The value of x is 6, then the value of JK is 83, KL is 83 and JL is 83.

<h3>What is a triangle?</h3>

A triangle is a polygon that has three sides and three vertices. It is one of the basic figures in geometry.

An equilateral triangle is a shape with three sides that have an equal measure of side length.

The 3 sides of triangle JKL are equal to each other, therefore we can equate any of the two sides together to find the unknown variable called x.

So, JK = KL

JK = 13x + 5

KL + 17x - 19

13x + 5 = 17x - 19

Collect like terms;

17x - 13x = 19 + 5

4x = 24

x = 24/4

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We can now proceed to find the sides;

JK = 13x + 5

13 x 6 + 5

= 78 + 5

= 83

JK = 83

KL = 17x - 19

= 17 x 6 - 19

= 102 - 19

= 83

KL = 83

JL= 8x + 35​

= 8 x 6 + 35

= 48 + 35

= 83

JL = 83

Hence, The value of x is 6, then the value of JK is 83, KL is 83 and JL is 83.

Learn more about the triangles;

brainly.com/question/2773823

#SPJ1

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Step-by-step explanation:

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