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oksian1 [2.3K]
3 years ago
6

Describe the steps you would use to solve the equation 4x + 7 = 15

Mathematics
2 answers:
choli [55]3 years ago
8 0

i would subtract 7 and divide by 4;

4x + 7 = 15

4x = 8

x = 2

AleksandrR [38]3 years ago
8 0
1. Isolate the variable. Subtract 7 from both sides of the equation. (4x+7-7 = 15-7)
2. ( 4x = 8) This is what you should come up with after subtraction.
3. Divide (4x=8) by 4 to isolate x.
4. After dividing both sides by 4, (x=2) should be the answer.
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Find the coordinates of the circumcenter of the triangle with the given vertices. X(-2, 1), Y(2, -3), Z(6, -3).
lana [24]

Answer:

C (4,3)

Step-by-step explanation:

Steps to find the circumcenter:

1) Find and Calculate the midpoint of given coordinates or midpoints.

2) Calculate the slope of the perpendicular bisector lines

3) By using the midpoint and the slope, find out the equation of the line

( y-y_1 )= m(x-x_1)

4) Do the same for another line

Solve the equations of two lines to get the intersection point.

The intersection point will be the circumcenter of the triangle.

Given :

X(-2,1), Y(2,-3), Z(6,-3)

Please see the attached file:

5 0
3 years ago
Can someone please help me ..I can’t get anymore questions wrong or else I will fail I need help
dedylja [7]

Answer:

maybe number 2

Step-by-step explanation:

because if 2+k=18 then there is no other k there and where did the additional 2 come from ?and 2k=18 then value of k is 9 + there is balance.I may be wrong correct me but i think it is no.2

5 0
3 years ago
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What is 8y=48 what is the answer to the problem
valkas [14]

48 divided by 8 equals 6

so y = 6

7 0
3 years ago
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2.16 as a fraction in simplest form <br><br> please explain if you can it would help a lot!
Ludmilka [50]

Answer:

54/25

Step-by-step explanation:

54/25 is the simplest form of 2.16 when writing as a fraction.

5 0
3 years ago
Write an equation for the cubic polynomial function whose graph has zeroes at 2, 3, and 5.
TiliK225 [7]

we know that

For a polynomial, if x=a is a zero of the function, then (x−a) is a factor of the function. The term multiplicity, refers to the number of times that its associated factor appears in the polynomial.

So

In this problem

If the cubic polynomial function has zeroes at 2, 3, and 5

then

the factors are

(x-2)\\ (x-3)\\ (x-5)

Part a) Can any of the roots have multiplicity?

The answer is No

If a cubic polynomial function has three different zeroes

then

the multiplicity of each factor is one

For instance, the cubic polynomial function has the zeroes

x=2\\ x=3\\ x=5

each occurring once.

Part b) How can you find a function that has these roots?

To find the cubic polynomial function multiply the factors and equate to zero

so

(x-2)*(x-3)*(x-5)=0\\ (x^{2} -3x-2x+6)*(x-5)=0\\ (x^{2} -5x+6)*(x-5)=0\\ x^{3} -5x^{2} -5x^{2} +25x+6x-30=0\\ x^{3}-10x^{2} +31x-30=0

therefore

the answer Part b) is

the cubic polynomial function is equal to

x^{3}-10x^{2} +31x-30=0

7 0
3 years ago
Read 2 more answers
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