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pav-90 [236]
3 years ago
15

What is the answer to x + 1.2x?

Mathematics
1 answer:
Alborosie3 years ago
4 0

Answer:

2.2x^2 or 2.2x

Step-by-step explanation:

You might be interested in
PLS PLS PLS!! TIMEDD!!
igomit [66]

Lines l and m are parallel because same-side interior angles are supplementary

From the question, we are to determine the lines we can conclude are parallel

From the given information, we have that

m ∠3 + m ∠4 = 180°

That is,

The measure of angle 3 and the measure of angle 4 are supplementary.

In the diagram,

We can observe that ∠3 and ∠4 are same-side interior angles

NOTE: If interior angles on the same side of the transversal sum to 180, then lines are parallel.

Hence,

Due to the fact that same-side interior angles are supplementary, lines l and m are parallel

Learn more on Parallel lines postulates here: brainly.com/question/9602013

#SPJ1

4 0
1 year ago
A sphere with a radius of 6 cm has the same volume as a cone with a height of 6 cm. What is the radius of the cone?
Advocard [28]
The volume of a sphere is
V_s = 4/3 * pi * r_s^3
The volume of a cone is
V_c = 1/3 * pi * h * r_c^2

Since we know that the two volumes are equal, we can say
V_s = V_c
4/3 * pi * r_s^3 = 1/3 * pi * h * r_c^2

Let us now isolate r_c, the radius of the cone:
4/3*r_s^3 = 1/3 *h*r_c^2
sqrt((4*r_s^3)/h) =r_c = 12 cm 

So the radius of the cone is 12 cm
8 0
3 years ago
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth 5y^2-8y=2
solmaris [256]

Answer:


Step-by-step explanation:

First, rewrite the equation (all terms should be in the left side):

5y^2-8y-2=0.

In this equation,

  • a=5;
  • b=-8;
  • c=-2.

Then the discriminant

D=b^2 -4ac=(-8)^2-4\cdot 5\cdot (-2)=64+40=104.

Then

y_1=\dfrac{-b+\sqrt{D}}{2a}=\dfrac{-(-8)+\sqrt{104}}{2\cdot 5}=\dfrac{8+2\sqrt{26}}{10}=\dfrac{4+\sqrt{26}}{5},\\ \\y_2=\dfrac{-b-\sqrt{D}}{2a}=\dfrac{-(-8)-\sqrt{104}}{2\cdot 5}=\dfrac{8-2\sqrt{26}}{10}=\dfrac{4-\sqrt{26}}{5}.

6 0
3 years ago
\begin{aligned} &2x+7y=1 \\\\ &y=4x -8 \end{aligned}
Lina20 [59]

Answer:

Step-by-step explanation:

hello :

2x+7y=1 ...(*)

y=4x−8...(**)

(4;8) means x= 4 and y= 8

put this values in (*) and(**) :

2(4)+7(8) =1           62=1    false

8=4(4)-8          8=8   true

so :(4;8)  is not solution for this system.

3 0
4 years ago
Find ML, JK=3x+11, ML=10x-12, NP=45
tigry1 [53]

Answer:

ML = 58

Step-by-step explanation:

Given

JK=3x+11, ML=10x-12, NP=45

See attachment

Required

Length ML

First, calculate x using the following equivalent ratios

JK : NP = NP : ML

Express as fraction

\frac{JK }{ NP} = \frac{NP }{ ML}

Cross Multiply

JK * ML = NP * NP

Substitute values:

(3x +11) * (10x - 12) = 45 * 45

Expand

30x^2 - 36x + 110x - 132 = 2025

30x^2 +74x - 132 = 2025

Collect like terms

30x^2 +74x - 132 - 2025=0

30x^2 +74x -2157=0

Using a calculator:

x \approx -10 and x \approx 7

Given that:

ML=10x-12

Substitute values for x

ML=10*-10-12 = -100 - 12 = -112

ML=10*7-12 = 70 - 12 = 58

ML cannot be negative; So:

ML = 58

5 0
3 years ago
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