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miskamm [114]
2 years ago
15

Please help me figure out these two questions

Mathematics
1 answer:
ollegr [7]2 years ago
7 0
1. Linear
2. Quadratic
hope this helped
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12x^2+20=50 what is x
LenaWriter [7]

Answer: x=1.5811389999999999 , or 1.59

Step-by-step explanation:

First, Subtract 20 from both sides.

      12x2+20−20=50−20

      12x2=30

 Then, Divide both sides by 12:

12x^2/12 = 30/12

⇒ you get : x^2 = 5/2

After, Take square root.

x= ± √ 5/2

Finally you answer is going to be =1.5811389999999999 OR, 1.59

* Hopefully this helps:) Mark me the brainliest:)

<em>∞ 234483279c20∞</em>

7 0
3 years ago
1. Solve for x. Then find the angle measures of the<br>triangle?<br>(4x)<br>(6x+55)<br>(9x+30)​
nalin [4]

Answer:

x =  5.

First angle = 20°,  Second angle = 85°,  Third angle  = 75°

Step-by-step explanation:

The first angle of the triangle  =  (4 x)

The second  angle of the triangle  =  (6x + 55)

The third angle of the triangle  =  (9x + 30)

By ANGLE SUM PROPERTY of a triangle:

First angle + Second  angle +  Third angle  = 180°

⇒ (4 x)  + (6x+55)   +  (9x+30)​  = 180°

or, (4x + 6x + 9x) + ( 55 + 30) =  180°

or, 19x = 180 - 85

or, 19 x  = 95   ⇒ x = 95 /19 = 5

or, x = 5

Hence, first angle of the triangle =  (4 x) = 4 x 5 = 20°

Second angle = ( 6x + 30)  = 6(5) + 55 = 85°

Third angle = (9x  + 30  = 9(5) + 30 = 75°

8 0
3 years ago
Solve the problem.
Snezhnost [94]

The total cost for plumber number 1 expressed as a function of x is

c1(x)=45x+90

That is, the charge per hour times the number of hours plus the fixed charge for a visit.

Using the same pattern, write the function for the second plumber. Then set the two functions equal to each other and solve for

6 0
3 years ago
Read 2 more answers
An ice cream bar was 692 calories. If they increased the size of the bar by 3%, what is the expression to find the new calorie c
Romashka [77]
B= ice cream bar
C= new calorie count

Expression:
C=(0.03B) + B

C=(3% * 692)+692
C=(0.03 * 692)+692
C=20.76+692
C=712.76 or rounded to 713= new calorie count

Hope this helps! :)
3 0
3 years ago
Solve the proportion. 15. 7/11 = 18/x+1
xxMikexx [17]

7/11 = 18/x+1

7x + 7 = 198

7x = 198 - 7

7x = 191

x = 191/7

x = 27.28

8 0
3 years ago
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