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Goshia [24]
3 years ago
12

I need some helpppppppppppppp

Mathematics
2 answers:
kati45 [8]3 years ago
8 0
The answer is 0.65x+1.75=10
Vesna [10]3 years ago
7 0
I keep trying to post this answer. Maybe the screenshot will work

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6-11x=7x-12 how do you solve
tekilochka [14]
Use Cymath it helps and give u the answer
6 0
3 years ago
SOMEONE HELP PLEASE! ASAP!
Luba_88 [7]
When two lines intersect, the angles across from the intersection (the "X") are congruent (equal), and referred to as "vertical angles."
So by the rule of vertical angles are congruent, we can set them equal:
{x}^{2}  - 6x = 1\div2 \: x + 42 \\  {x}^{2}  - 6x - 1 \div 2 \: x = 42 \\  {x}^{2}  - 6.5x = 42
{x}^{2}  - 6.5x - 42 = 0 \\ multiply \: both\: sides \: by \: 2 \: to \: get \\ rid \: of \: the \: decimal \\ 2({x}^{2}  - 6.5x - 42) = 2(0)
2 {x}^{2}  - 13x - 84 = 0
to factor we need the factors of 84:
1×84, 2×42, 3×28, 4×21, 6×14
Now we need one of those factors ×2 ( from the x^2 term) minus the other factor to equal 13 (the middle term)
it turns out that if we use 4×21: 4×2 = 8
and 21-8 = 13. Woohoo! we got it
So now we have:
2 {x}^{2}  - 13x - 84 = 0 \\ (2x - 21)(x + 4) = 0
Now set each factor = 0
1) 2x - 21 = 0 and 2) x + 4 = 0
1) 2x - 21 = 0, 2x = 21, x = 21/2 = 10.5
2) x + 4 = 0, x = -4

Now we plug in each answer to check:
1) x = 10.5
{x}^{2}  - 6x =  {(10.5)}^{2}  - 6(10.5) \\  = 110.25 - 63 = 47.25
1/2x + 42 = 1/2(10.5) + 42 = 5.25 + 42 = 47.25
47.25 = 47.25
BAM SO IT LOOKS LIKE THAT'S IT!!
But let's check 2) first:
2) x = -4
{( - 4)}^{2}  - 6( - 4) = 16 + 24 = 40
1/2x + 42 = 1/2(-4) + 42 = -2 + 42 = 40
40 = 40, so both work!!
But it asks for m<1, and <1 is supplementary because it lies on same line, meaning the sum of both = 189
Therefore m<1 = 180 - 47.25 = 132.75°
OR m<1 = 180 - 40 = 140°


6 0
3 years ago
What are the square roots of 81? I​
ipn [44]
The square root of 81 is 9
7 0
2 years ago
Read 2 more answers
X + 5 = -3^x + 4<br> A. X= -2.25<br> B. X= 3.75<br> C. X= -1.25<br> D. X= 1.25
Tamiku [17]
I think it is D the answer choose
7 0
3 years ago
Read 2 more answers
If G varies inversely as r, and G = 18 when r= 4, find G when r= 6
UkoKoshka [18]
The model to use here is   y = k/x.

If g =18 when r = 4, then 18 = k/4.  Solving for k, k = 72.

Then g = 72/r.  If r = 6, g = 72/6 = 12 (answer)
3 0
3 years ago
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