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3 years ago

2x+30=5x+9 Solve for x O 6 0 -7 O -6 What’s the answer please?

Mathematics

2 answers:

dmitriy555 [2]3 years ago

5 0

$\text {Hey! Let's Solve this Equation!}$

$\text {\underline {The First Step is to Subtract 2x}}$

$\text {2x+30-5x=5x+9-5x}$

$\text {Your New Problem Is: -3x+30=9}$

$\text {\underline {The Next Step is to Subtract 30}}$

$\text {3x+30-30=9-30}$

$\text {Your New Problem Is: -3x=-21}$

$\text {\underline {The Final Step is to Divide -3}}$

$\text {-3x/-3=-21/-3}$

$\text {Your Answer Would Be:}$

$\fbox {x=7}$

$\text {Best of Luck!}$

Maksim231197 [3]3 years ago

4 0

Answer:

Step-by-step explanation:

get the x on the same side.

subtract 2x from both sides

30=3x+9

then get the variables on one side by themselves. subtract 9 from both sides.

21=3x

now divide by 3 on both sides.

there's your answer.

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2sin^(-2490)+tan 1410

givi [52]

2sin²(-2490)+tan 1410=2sin²(-330-6*360)+tan (330+3*360)=
=2sin²(-330)+tan (330)=2 sin²(30-1*360)+tan (-30)=
=2sin²(30)-tan (30)=2(1/2)²-√3/3=1/2-√3/3)=(3-2√3)/6

Answer: 2 sin²(-2490)+tan (1410)=(3-2√3)/6 (≈-0.07735...)

7 0

3 years ago

Point B has coordinates (1,2). The x-coordinate of point A is -8. The distance between point A and point B is 15 units. What

Xelga [282]

Answer:

The possible coordinates of point A are $A_{1} (x,y) = (-8, 14)$ and $A_{2} (x,y) = (-8, -10)$ , respectively.

Step-by-step explanation:

From Analytical Geometry, we have the Equation of the Distance of a Line Segment between two points:

$l_{AB} = \sqrt{(x_{B}-x_{A})^{2} + (y_{B}-y_{A})^{2}}$ (1)

Where:

$l_{AB}$ - Length of the line segment AB.

$x_{A}, x_{B}$ - x-coordinates of points A and B.

$y_{A}, y_{B}$ - y-coordinates of points A and B.

If we know that $l_{AB} = 15$ , $x_{A} = -8$ , $x_{B} = 1$ and $y_{B} = 2$ , then the possible coordinates of point A is:

$\sqrt{(1+8)^{2}+(2-y_{A})^{2}} = 15$

$81 + (2-y_{A})^{2} = 225$

$(2-y_{A})^{2} = 144$

$2-y_{A} = \pm 12$

There are two possible solutions:

1) $2-y_{A} = -12$

$y_{A} = 14$

2) $2 - y_{A} = 12$

$y_{A} = -10$

The possible coordinates of point A are $A_{1} (x,y) = (-8, 14)$ and $A_{2} (x,y) = (-8, -10)$ , respectively.

8 0

3 years ago

How much would $200 invested at 6% interest compounded annually be worth after 4 years.

Pachacha [2.7K]

A=P(1+r)^t
A=200(1+.06)^4
$252.50

8 0

3 years ago

Read 2 more answers

There are 3/4 of a pizza left over from last night how many 1/8 portions are there

KiRa [710]

3/4 of the pizza is left

3/4 = 6/8

There are 6 "1/8" portions left

hope this helps

8 0

3 years ago

Suppose your dean of admissions is considering surveying high school seniors about their perceptions of your school to design be

KonstantinChe [14]

Answer and explanation:

Advantages of telephone interviews:

They are more convenient than face to face interviews

They are alot more cost-effective

There is a wider geographical access as you can reach people in other countries too

Disadvantages of telephone interviews:

Questions become has limited complexity as opposed to face to face interviews

It may be somewhat intrusive for customers and there could also be interference from noise in the background. Also bad connection issues.

Advantages of internet survey:

Increased geographical access leading to high response rate.

Alot more convenient and flexible than face to face interviews

Low cost advantages

Disadvantages of internet survey:

Inability for individuals who are not online to participate

Non response bias

Limited complexity of questions, usually close ended questions

3 0

3 years ago