Mathematics Middle School

Help please

Solve for x.

Help PleaseSolve For X.

Answers

Answer 1

Answer:x=29

Step-by-step explanation:

x+3+x-1+x+1=90

3x+3-1+1=90

3x+3=90

3x=90-3

3x=87

x=87/3

x=29

Answer 2
X=29 that’s ur answer

Related Questions

Directions: Follow the instructions for the following inequalities.


1. 4 < 7 Multiply both sides by 3, then by 2, then by 4, then by 9


2. 11 > -2 Add 3 to both sides, then add 3, then add (-4)


3. -2 less than or equal to -2 Subtract 6 from both sides, then 8, and then 2


4. -4 < 8 Divide both sides by -4, then by -2


5. Write a short explanation of the effects of the above operations. Did this affect the inequality sign? Was it still true? Why or why not?

Answers

Answer:

1. 504 < 1512

2. 12 > 0

3. -2 = -2

4. -1 < 2

Step-by-step explanation:

Given that both sides are being changed by the same amount and sign, the sign never changes. They always have the same value.

The answer is -2 because after you multiply you have to divide

nathan buys 2 baseball tickets for 15 dollars each and 2 lunches for 3.50 how much money does he spend all together

Answers

Answer:

2*30=15+2*3.5=37%

Step-by-step explanation:

Answer:

He spends $37 each.

Step-by-step explanation:

If you add together the spent money then you get $37:

$30 + $7 = $37

Which is a correct classification for this triangle?
Responses

acute triangle

equiangular triangle

right triangle

obtuse triangle

Answers

the answer is acute triangle
I believe it’s acute. I’m doing my iReady diagnostic right now, and just answered that

the question is below

Answers

58
explanation 4x6 / 2 =5 5+5=10 8x6=48 48+10=58

Answer58

Step-by-step explanation:

How many degrees is angle 7?

Answers

Answer:

42°

Step-by-step explanation:

This is defined as a transversal in geometry, where one line intersects two straight lines.

It is given that one of the angles is 42°. Let the angle that measure 42° be denoted as ∠42.

∠4 ≅ ∠42 based on the alternate interior angles theorem.

∠4 ≅ ∠7 based on the vertical angles theorem.

Therefore, ∠42 ≅ ∠7 based on CPCTC.

Therefore,

m∠7 = 42°.

~

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42 degrees hope this helps.

Cooper was out at a restaurant for dinner when the bill came. His dinner came to $28. After adding in a tip, before tax, he paid $33.32. Find the percent tip.

Answers

Answer:

19%

Step-by-step explanation:

Percentage tip = (Tip/Dinner cost) x 100

Percentage tip = ($5.32/$28) x 100

Percentage tip = 0.19 x 100

Percentage tip = 19%

Therefore, Cooper gave a 19% tip on his dinner.

Answer: 19%

Step-by-step explanation:

Alyssa plants 1/5 of a row in her garden every 2/3 of an hour.
How many rows does Alyssa plant per hour?

A-- 3 1/3
B-- 2/15
C-- 7 1/2
D-- 3/10
A certain brand of coffee costs $6.99 for 24.2 ounces. What is the unit rate?
Enter your answer, rounded to the nearest cent, in the box.

$____ per oz.

Answers

Answer:

B for alyssa  : $0.29 per oz, or 29 cents per oz.

Step-by-step explanation:

find common denominator

1x3=3 5x3=15  so 3/15

2x5=10 3x5=15 so 10/15

To find a unit rate, divide the numerator AND denominator by the denominator. The rate is $6.99/24.2 ounces. We will divide $6.99 by 24.2, and 24.2 ounces by 24.2. The answer will be $0.288843/1 ounce. If we round, it will be $0.29/1 ounce.

Answer



B for Alyssa: $0.29 per oz or 29 cents per oz


40 PTS!!! On the following composite figure, all angles are right angles. All short edges of the figure have a measure of 1.5 centimeters. All long edges have a measure of 3 centimeters. Find the area of the figure. Explain or show how you got your answer.

Answers

Answer:

27

Step-by-step explanation:

cut the shape into 3 rectangles and one square

3 × 1.5 = 4.5

3 × 1.5 = 4.5

3 × 1.5 = 4.5

3 × 1.5 = 4.5

3 × 3 = 9

4.5 + 4.5 + 4.5 + 4.5 + 9 = 27

the answer is 27!!!!!!

Mathematics 20 points!
Please Say A) B) C) D) as your answer

Answers

B
8*3*5= 120
6*2*10= 120

Answer:

Its B

Step-by-step explanation:

8x3x5 = 120

10x2x6= 120

Btw someone please answer my question

please help. i dont understand

Answers

Answer: Look at the key, count all of the shapes on the top by matching them with the key. Then look at the key again and the answers and find what matches.

Be quick pleaase I will give brainleiets it you tell me

Answers

Answer:

True

False

False

True

False

Option 1 : 1/20 × 200

Option 3 : 10

Above options are only correct for the given question.

First of all, let us calculate the value of 5% of 200

⇒ 5/100 × 200 = 1/20 × 200 = 10

Now, check each option whether they give the same value i.e., 10.

Option 1 : 1/20 × 200

⇒ 1/20 × 200 = 10

Hence, the above expression is equivalent to 5% of 200.

Option 2 : 1/5 × 200

⇒ 1/5 × 200 = 40

Hence, the above expression is not equivalent to 5% of 200.

Option 3 : 1/2 ÷ 200

⇒ 1/2 ÷ 200 = (1/2) × (1/200) = 1/400

Hence, the above expression is not equivalent to 5% of 200.

Option 4 : 10

This option is correct as the value of 5% of 200 is 10.

Option 5 : 5

This option is incorrect as the value of given expression is 10.

To learn more about Percentage :

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who here thinks radiodust from hazbin hotel is hot

Answers

Answer: I came here for math then I found this

Answer:

Sorry but NO

Step-by-step explanation:

HELP PLEASEE!!

What is the sum of -2x³ + x-3 and x³- 3x - 4?
(a) Show your work.
(b) Is the sum of -2x³ + x-3 and x³-3x - 4 equal to the sum of x³ - 3x - 4 and
-2x³ + x-3? Explain your answer.

Answers

Answer:

a) the result is -X³-2x -7

b) no

Yes ,the two equations are equivalent because only the commutative property was applied.

please help me fast to please and if you get it right I will mark you as brainlyst and plut 15 poing please I beg you fast

Answers

Answer:1.5

Step-by-step explanation:

I have a math test tomorrow about Quadratics and Translations. Can somebody give me an easy-to-understand summary of these key topics?
Transformations with quadratic equations (shift left, right, up, down, reflections, etc.), how to find the axis of symmetry and vertex by the equation, how to find domain and range from a graph, telling if its a quadratic equation by 1st and 2nd difference and anything else related. Also please help me because when creating tables with the equation, the negatives I struggle with for example: y=x^2-4x-6 and substituting -2 it gets super confusing. I WOULD GIVE OUT MORE POINTS but sometimes ppl put bad responses SO PLEASE HELP ME CORRECTLY!! THANK YOU SO MUCH!

Answers

Quadratic equations are polynomial equations of degree 2. They can be written in the form ax² + bx + c = 0, where a, b, and c are constants. The graph of a quadratic equation is a parabola.

Transformations involve shifting or reflecting the graph of a quadratic equation. The most common transformations are shifting the graph left or right (by adding or subtracting a constant from x), shifting the graph up or down (by adding or subtracting a constant from y), and reflecting the graph across the x-axis or y-axis.

How to explain the mathematical terms

The axis of symmetry is a vertical line that divides the parabola into two symmetrical halves. The equation of the axis of symmetry for a quadratic equation of the form y = ax² + bx + c is x = -b/2a.

The vertex is the point on the parabola where it reaches its maximum or minimum value. The vertex of a quadratic equation of the form y = ax^2 + bx + c is (-b/2a, c - b²/4a).

The domain of a quadratic equation is the set of all real numbers for which the equation is defined. The range is the set of all possible y-values that the equation can take. You can find the domain and range of a quadratic equation by looking at its graph.

In recognizing quadratic equations, you can tell if an equation is quadratic by looking at the powers of the variables. A quadratic equation will always have a variable raised to the power of 2.

When substituting negative numbers into a quadratic equation, it can be helpful to use parentheses to avoid confusion. For example, to evaluate y = x² - 4x - 6 at x = -2, you would write y = (-2)² - 4(-2) - 6 = 16 + 8 - 6 = 18.

Learn more about quadratic on

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The variables x and y have a proportional relationship, and y=5 when x=8
Which equation represents this relationship

A- y=8/5x

B- y=13x

C- y=5/8x

D- y=40x

Answers

Answer:

C    y = 5/8 x

Step-by-step explanation:

y = kx

5 = k × 8

k = 5/8

y = (5/8)x

The answer is C - y=5/8x

help ty..:)))))))))............................................

Answers

Answer:

3 times more

Step-by-step explanation:

mangos: m = 108

portugals:  p

oranges:     o = 3p

108 + p + 3p = 540

108 + 4p = 540

4p = 540-108 = 432

p = 432/4 = 108

o = 3p = 3(108) = 324

324/108 = 3  there are 3 times more oranges than portugals

Answer:

1620

Step-by-step explanation:

540 X 3 = 1620

Select all of the terms that apply to the shape. // 50 points :) // ANSWER ASAP PLEASE!!

Answers

Answer:

Ok

Step-by-step explanation:

hexagon

regular polygon

Pentagon

Answer:

hexagon

Pentagon

Step-by-step explanation: :/

30 POINTS!! QUICK AND EASY
Which of the points plotted is closer to (−8, −5), and what is the distance?

A graph with the x-axis starting at negative 10, with tick marks every one unit up to 10. The y-axis starts at negative 10, with tick marks every one unit up to 10. A point is plotted at negative 8, negative 5, at negative 8, 6 and at 6, negative 5.

Point (−8, 6), and it is 11 units away
Point (−8, 6), and it is 14 units away
Point (6, −5), and it is 11 units away
Point (6, −5), and it is 14 units away

Answers

Answer:

Point (−8, 6), and it is 11 units away

Point (-8, 6), and it is 11 units away

Solve for r.
–142 = r − 953
r =

Answers

Answer:

811

explanation.

142=−953−142+953=−953+953

Calculate the volume of a cone with a height of 6 inches and a diameter of 6 inches.
Leave your answer in terms of PI

Answers

Answer: Volume ≈ 56.55

Step-by-step explanation:

56.54867 is the answer, but I rounded it. I hope this helped! :)

Answer:

18π cubic inches

Step-by-step explanation:

First, we need to find the radius of the cone, which is half of the diameter.

radius = diameter/2 = 6/2 = 3 inches

The formula for the volume of a cone is:

V = 1/3 × π × r^2 × h

where r is the radius of the base of the cone, and h is the height of the cone.

Substituting the values we get:

V = 1/3 × π × 3^2 × 6

V = 1/3 × π × 9 × 6

V = π × 18

Can someone please help me

Answers

Rate of change= (y2-y1)/(x2-x1), in this case the rate of change is 2
2

the formula for rate of change is
(Y2 - Y1)/(X2-X1).

Plug in any 2 random coordinates.

(6-4)/(5-4)

2/1

2

which number line shows the solution to the inequality?

Answers

Answer:

3rd point see explanation

Step-by-step explanation:

y-2<-5

y-2+2<-5+2

y<-3

I'll give 10 points to anyone who can answer the question.

Answers

Answer:1/30

Step-by-step explanation:

CAN YOU GUYS HELP ME PLESE TYYYY!!!

Answers

Answer:

3:4

Is the required answer

Could someone please help?

Answers

Answer:

25 gallons35 gallons

Step-by-step explanation:

You want the number of gallons of gas used by car 1 at 25 mpg and car 2 at 40 mpg when the total gas used for driving 2025 miles is 60 gallons.

Setup

Let x represent the number of gallons used by car 2 at 40 miles per gallon. Then the gas used by car 1 is (60 -x). The number of miles driven is the product of miles per gallon and gallons used.

  25(60 -x) +40x = 2025 . . . . total miles driven

Solution

Simplify the equation:

  1500 +15x = 2025

  15x = 525 . . . . . . . . . . subtract 1500

  x = 35 . . . . . . . . . . divide by 15

  60-x = 25 . . . . . gallons used by car 1

The first car used 25 gallons; the second car used 35 gallons.

__

Additional comment

The first car drove 25·25 = 625 miles; the second car drove 40·35 = 1400 miles.

625 gallons, second one is a little more difficult

Rewrite each expression using the distributive property.then combine like terms if possible
2(x+3)-6(x+3)

Answers

Answer:

2x+6-6x-18

-4x-12

Step-by-step explanation:

Your first distributing then your combining like terms,finally you cannot evaluate the answer anymore.

Please help me ! i need this done now!

Answers

B the answer would be 10 due to the figure being 90 degrees and separated to 60 and 3x. The x would be 10 as 3x10 would be added to make 30 and finally you will add 60+30 making sure it's 90.

Answer is 10 (B)
the answer to ur question is 30

PLEASE HURRYYY!!!! I WILL MARK BRAINLIEST IF IT'S RIGHT!!!

Simplify.
y⁵ · y³ ÷ y²

Answers

Step-by-step explanation:

Y^5 * Y^3  /  Y^2   =  Y ^(5+3 -2) = Y^6

Rewrite the division as a fraction.

[tex]\dfrac{y^5\times y^3}{y^2}[/tex]

Multiply y⁵ by y³ by adding the exponents.

[tex]\dfrac{y^8}{y^2}[/tex]

Cancel the common factor of y⁸ and y²

[tex]\bold{y^6}[/tex]

Could some on help me? Please.

Answers

Answer:

Step-by-step explanation:

Infinitely many.

The two equations are the same yet formatted differently. Because these lines will overlap each other, the answer is infinitely many.

It would be infinity as in if can be many
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