Mathematics High School

Evaluate 2x2 + 4 if x = 2

Answers

Answer 1

Answer:

x = 12

Step-by-step explanation:

insert 2 into the equation where x is.

2(2)2 + 4

so this is 2 * 2 * 2 + 4 = 12

Answer 2

2(x)2+4= 2x2x2+4= 12

Related Questions

Please help im stuck wjiesdGREE

Answers

Answer:

13/90

Step-by-step explanation:

Write in the name of the molecular geometry for each molecule described below.

A molecule with two atoms and no lone pairs around the central atom has a
shape.
A molecule with four atoms and no lone pairs around the central atom has a
shape.
A molecule that has two atoms and two lone pairs around the central atom has a
shape.
A molecule that has five atoms and no lone pairs around the central atom has a
shape.

Answers

Answer:

linear

tetrahedral

bent

trigonal-bipyramidal

Step-by-step explanation:

lineartetrahedralbenttrigonal-bipyramidalWhat is molecular geometry?

Molecular geometry, also known as the molecular structure, is the three-dimensional structure or arrangement of atoms in a molecule.

a) A molecule with two atoms and no lone pairs around the central atom has a shape -Linear.

b) A molecule with four atoms and no lone pairs around the central atom has a shape- Tetrahedral

c) A molecule that has two atoms and two lone pairs around the central atom has a shape - Bent.

d) A molecule that has five atoms and no lone pairs around the central atom has a shape- Trigonal-bipyramidal.

Learn more about molecular geometry here:

https://brainly.com/question/21939862

#SPJ2

What are the x and y-intercepts of the line described by the equation? -6x + 3y = 12

Answers

Answer:

(-2,0) (0,4)

Step-by-step explanation:

Explain why 10 x 2 is equivalent to 10 ÷ 1/2??

Answers

Answer: Because multiplying or dividing by the reciprocal is the same.

Find the range of each function when the domain is {-3, -2, 2, 3}
f(x)=5x-6

Answers

Answer:

-21, -16, 4, 9

Step-by-step explanation:

-3: f(-3) = 5(-3)-6 = -15-6 = -21

-2: f(-2) = 5(-2)-6 = -10-6 = -16

2: f(2) = 5(2)-6 = 10 - 6 = 4

3: f(3) = 5(3)-6 = 15 - 6 = 9

2x+3y=-10 Solve for y

Answers

Answer: y= -10/3 - 2x/3

Step-by-step explanation:

move all terms that dont contain y to the right side and solve

If a²+b²=74 and ab=10 find the value of (a-b)²

Answers

Answer:

Step-by-step explanation:

(a -b)²

= a² -2ab +b²

= a² +b² -2ab

= 74 -2(10) (subst. value of a²+b² and ab)

= 74 -20

= 54

The answer is: x is choose your answer

Answers

Answer:

All real numbers

Let's find the critical points of the inequality.

−4x+7=17

−4x+7+−7=17+−7(Add -7 to both sides)

−4x=10

−4x−1=10−1

(Divide both sides by -1)

4x=−10

4x=−10(Solve Exponent)

log(4x)=log(−10)(Take log of both sides)

x*(log(4))=log(−10)

x=log(−10)log(4)

x=NaN

Kelly ran 3 miles fewer than twice as far as Jim. Jim ran
m miles. Which expression represents how far Kelly ran?

Answers

Answer:

2m - 3

Step-by-step explanation:

she ran 3 miles less than twice as far as Jim

A kitchen sink faucet streams 0.5 gallons of water in 10 seconds. A bathroom sink faucet streams 0.75 gallons of water in 18 seconds. Which faucet will fill a 3-gallon container faster?

Answers

Answer:

Kitchen sink

Step-by-step explanation:

1. A recipe says that 4 cups of dry rice will serve 8 people. Complete the table as you answer the
questions. Be prepared to explain your reasoning.
cups of rice
number of people
o
How many people will 10
cups of rice serve?
4
8
o
6
12
How many cups of rice are
needed to
serve 42 people?
10
42

Answers

Answer:

How many cups will 10 cups of rice serve? 20

How many cups of rice needed to serve 42 people?21

convert to a mixed number in simplest form 82/6

Answers

Answer:

13 4/6 or 13 and 2/3

Step-by-step explanation:

82/6

find multiples of 6 closest to 82

6*13=78

82-78 is 4

13 and 4/6 or 13 and 2/3 simplified

100 points and brainliest

Mira and Sasha observed two points, P and Q, on a number line.
A number line is shown from negative 2 to positive 2 with increments of 2 over 8. A point P is shown at the seventh tick mark to the left of 0, and a point Q is shown at the seventh tick mark to the right of 0.

Sasha said that the absolute values of the numbers represented by the two points are different.
Mira said that the absolute values of the numbers represented by the two points are the same.

Which of the following explains who is correct?

A Sasha, because the points are of different signs

B Sasha, because the points are at different locations

C Mira, because each of the two points is 14 over 8 units from 0

D Mira, because the distance between the two points is 14 over 8 units

Answers

Answer:

A Sasha, because the points are of different signs

Answer:

Step-by-step explanation:

I got it right in my test and I saw it in some other brainly question

Line WV is perpendicular to both line RS and line TU.

On a coordinate plane, 3 lines are shown. Line V W goes through (negative 1, 5) and (1, 5). Line R S goes through (negative 5, 3) and (5, 1). Line T U goes through (negative 1, negative 2) and (4, negative 3).

Which statement must be true about line TU?

Line TU is parallel to line RS.
Line TU is perpendicular to line RS.
Line TU has no slope.
Line TU has a slope of –5

Answers

Answer:

Line TU is parallel to line RS

Step-by-step explanation:

I just got a 100 on the test

Line TU is parallel to line RS and has a slope of -1/5

What is a linear equation?

A linear equation is in the form:

y = mx + b

Where m is the slope and b is the y intercept.

Line V W goes through (-1, 5) and (1, 5). Line R S goes through (-5, 3) and (5, 1). Line T U goes through (-1,-2) and (4, -3).

Slope of VW = (5 - 5)/(1- (-1)) = 0

Slope of RS = (1 - 3) / (5 -(-5)) = -1/5

Slope of TU = (-3 - (-2))/(4 - (-1)) = -1/5

Line TU is parallel to line RS and has a slope of -1/5

Find out more on linear equation at: https://brainly.com/question/14323743

Ten times a number, x, is one-half the sum of the number and three.

Which answer represents this situation?

10x=12(x+3)

10x+12x+3

10x=12x+3

10x+12(x+3)

Answers

Answer:

10x=1/2(x+3)

If you substitute numbers and characters in for words you would get this equation.

In the diagram below, DE is parallel to Y. What is the value of x

Answers

180-115=65 (just writing this because my answer has to be over 20 characters)

Which equation represents the line of reflection for this graph?
3
12
2 3 4
5
6
-2
3
-5
A
O y=2
Ox=-2
© X=0
y=-1

Answers

Answer:

x= 0

Step-by-step explanation:

Because it scale factor

Look at image please help me I’m struggling

Answers

The unit rate is 2 cookies/ 1 dollar
You can get this by looking at the slope, it goes up by 2 and then to the right by 1.

Simplify:
(11x0q6)(7x0)
I need step by step too

Answers

Answer:

(11⋅7q^6)

Step-by-step explanation:

STEP 1:

11q^6 • 7

STEP 2:

Final result :

(11•7q6)

find the product using suitable properties a, 38 × 55 + (-45) ×38

Answers

Answer:

= 380

Step-by-step explanation:

(38*55) + (-45*38)

(2090) + (-1710)

2090 - 1710

= 380

380 is the correct answer I believe

What is m Enter your answer in the box
m

Answers

Answer:

x = 30

Step-by-step explanation:

x + 2x + 3x = 180 (Add like terms)

6x = 180 (Divide both sides by 6)

x = 30

Therefore;

x = 30

2x = 60

3x = 90

X=30
3x=90
2x=60

If you are referring m as x then first we need to understand and realize how a triangle will ALWAYS equate to 180°.

With that being said a triangle will always have 3 angles, along with them all being able to be added up at equating 180. In this case all of our angles are related to x. We want to first add up all of our angles to equal 180 (x+2x+3x=180 OR 6x+180.) now that we have our equation, we want to solve for x so we need to isolate x first, in order to get 6 out of 6x we must divide by 6 on both sides of the equation which will then give us 180/6=30.

With x equating to 30 then we simply plug in our values for the angle. 3(30)= 90, 2(30)= 60 and x=30

{5,25,35,45,55,65} Rational numbers

Answers

Answer:

yes

Step-by-step explanation:

5,25,35,45,55,65

(6.-12) & (15,-3)
Need to find slope

Answers

Answer:

i look it up

Step-by-step explanation:

y + 1 3 + 7 y − 7 = 2 ( 4 y + 3 ) solve it and whats the number of solutions

Answers

8y+6=8y+6
subtract 8y from both sides
6=6
all real numbers

Answer:

Step-by-step explanation:

y+13+7y-7=2(4y+3)

8y+6=8y+6

which is true for all real values.

so number of solutions=infinite (all real values)

Is it cheaper to buy 10 single apples or buy them in a bundle of 10?

Plz help I’m not trying to fail

Answers

it's easy to by them Cheaper tbh with you

and it's a quiz Right??

Answer:

A bundle always cheaper than a single apple.

Step-by-step explanation:

Bundling helps to increase efficiencies and reduce marketing and distribution as well as maintenance cost.

I need help, pls answer.

Answers

Answer:

D the last one

Step-by-step explanation:

Answer:

I say D because new Orleans is closer to sea level than Salton Through

Step-by-step explanation:

Because ik it

What is the value of f(x) when x=3?

−3
−2
1
4

Answers

Answer:

Step-by-step explanation:

x = 3 meets the requirement x ≥ 1 thus

f(x) = x + 1, so

f(3) = 3 + 1 = 4

Hope this helps

Red

Answer:

✔-3

Step-by-step explanation:

E2021

Which of the following are ordered pairs for the equation y = 1/3x + 1?
O (1,0) (2,3) (3,6)
O (0,1) (3,2) (6,3)
O (0,1) (1,4)(2,7)
O (1,0) (3,2) (6,3)

Answers

Answer:

The second answer choice; (0,1) (3,2) (6,3) is your answer.

Step-by-step explanation:

I don't know how to explain this but here's a picture of the line; y=1/3x+1

I hope this helps! :)

What do u think about these fr?

Answers

Answer:

They are super good!! better than me tbh lol

Step-by-step explanation:

Answer:

Yes.

Step-by-step explanation:

I like them they arent over drawn i like the simplicity and cleaness of the images you managed to do.

SOMEONE PLEASE HELP I CANT GET IT

Answers

Answer:
y=3x+9

Explanation:
To answer this question, we first have to understand a few key concepts.

1) The equation given (y=3x+9) is written in slope-intercept form, which is y=mx+b.

Heres what the variables mean:
Y=the coordinate
M=the slope
X=the x coordinate
B=the y-intercept (the point on the line that intercepts the y-axis)

2) Parallel lines have the same slope. Using the given equation, we now know that the slope of line s is 3. Therefore, the slope of line t is also 3 (because they are parallel).

So now, this is our equation so far:
y=3x+b

All we need to do now is find b, which we can do by plugging in the coordinate (-6,-9) as the x and y variables.

y=3x+b
-9=3(-6)+b
-9=-18+b
Add 18 to both sides
-9+18=-18+b+18
9=b

And when we plug 9 into y=3x+b, we get:
y=3x+9

(And yes, they are pretty much the same line)

I hope this helps! Please comment if you have any questions.

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