HELPPPPP :Expressions: Multiple choice: picture provided. With questions and answer choices. USA test prep question

HELPPPPP :Expressions: Multiple Choice: Picture Provided. With Questions And Answer Choices. USA Test

Answers

Answer 1

Option B:

[tex]$x=\pm 2\frac{1}{2}[/tex]

Solution:

Given expression:

[tex]$3 x^{2}=18 \frac{3}{4}[/tex]

To find the value of x:

[tex]$3 x^{2}=18 \frac{3}{4}[/tex]

Convert mixed fraction into improper fraction.

[tex]$3 x^{2}= \frac{18\times 4+3}{4}[/tex]

[tex]$3 x^{2}= \frac{75}{4}[/tex]

Divide by 3 on both sides of the equation, we get

[tex]$x^{2}= \frac{25}{4}[/tex]

[tex]$ x^{2}= \frac{5^2}{2^2}[/tex]

Taking square root on both side of the equation.

[tex]$\sqrt{ x^{2}}= \sqrt{\frac{5^2}{2^2}}[/tex]

[tex]$ x=\pm \frac{5}{2}[/tex]

Convert improper fraction into mixed fraction.

[tex]$x=\pm 2\frac{1}{2}[/tex]

Hence option B is the correct answer.


Related Questions

Y=x squared + 9x + 7

Answers

Answer:

y=(x+9/2)squared-53/4

Step-by-step explanation:

Notebooks cost $1.20 each this weekend they will be on sale for $.80 what percentage is the sale

Answers

It’s a 34% discount

Answer:

33%

Step-by-step explanation:

(1.20-0.80)

=0.40 dollars

(0.40/1.20)x100

0.33x 100

=33%

Hope this helps and can I get a brainliest if you want to. That would be nice thanks!

What is (-14+3/2b)-(1+8/2b) equivalent to

Answers

Answer:

-48

Step-by-step explanation:

order of operations

8/9=?/18 find another name for the given number, but with the denominator indicated. Use multiplication by 1.

Answers

Answer:

n=16

Step-by-step explanation:

Let's solve your equation step-by-step.

8

9

=

n

18

Step 1: Cross-multiply.

8

9

=

n

18

(8)*(18)=n*(9)

144=9n

Step 2: Flip the equation.

9n=144

Step 3: Divide both sides by 9.

9n

9

=

144

9

n=16

Answer: 16

Step-by-step explanation:

8/9 = ?/18

Let the missing value be c

8/9 = c/18

Cross multiply

9c = 18 x 8

9c = 144

Divide both sides by 9

c = 144/9

c = 16.

CAN SOMEONE PLEASE HELP????

Answers

The area of the figure is A. 216 cm².

Step-by-step explanation:

Step 1:

To calculate the value of the composite shape we first divide it into shapes that we know.

In this case, the composite figure consists of a rectangle and a triangle attached to it.

If we can calculate the individual areas of the two shapes we should be able to calculate the area of the composite shape.

Step 2:

The triangle has a base length of 8 cm and a height of 12 cm. The area of the triangle [tex]=\frac{1}{2} (b)(h)=\frac{1}{2} (8)(12) = 48.[/tex]

The area of the triangle is 48 cm².

Step 3:

The area of a rectangle is the product of its length and its width.

The given rectangle has a length of 14 cm and a width of 12 cm.

The area of the rectangle [tex]= (l)(w) = (14)(12) = 168.[/tex]

The area of the rectangle is 168 cm².

Step 4:

Now we calculate the area of the entire figure by adding the areas of the triangle and the rectangle.

Area of the figure [tex]=48+168 = 216.[/tex]

So the area of the figure is 216 cm² which is option A.

What is the answer to this math problem? -4(z+3)-4(5-4z)

Answers

Answer:

12z -32

Step-by-step explanation:

-4(z+3)-4(5-4z)

Distribute

-4z -12 -20 +16z

Combine like terms

12z -32

The Mad Hatter buys his tea in bulk from the local store. A case of tea
bags costs 15 gold coins.
Which inequality shows the number of cases, c, of tea bags the Mad Hatter
can buy if he has, at most, 200 gold coins?​

Answers

Answer:

Atleast 13

Step-by-step explanation: If you divide 200 by 15 you get 13.33333333 so 13 is the answer!

Thanks if u help and brainly

Answers

Answer:

Mode: 33     Mean: 35.5

Step-by-step explanation:

The mode of a data set is the number that appears most often.

So the mode of this set would be 33, since it appears twice.

The mean of a data set is the average of the numbers.

To find the mean (average), add all eight numbers together, then divide by eight...

31 + 29 + 33 + 37 + 43 + 38 + 33 + 40 = 284

284 / 8 = 35.5

So, the mean of the numbers is 35.5!

solve:

(2.5x10^6) x (3x10^6)

(1.1x10^7)/(1.2x10^7)

Answers

7.5^12

[tex].916666666666[/tex]

Half of the difference of 25 and 7

Answers

Answer:

9

Step-by-step explanation:

25-7=18

18/2=9

The result of Half of the difference of 25 and 7 would be; 9

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

We need to determine the Half of the difference of 25 and 7

The difference between them;

25-7=18

Now the half of the result is;

18/2=9

More about the Algebra link is given below.

brainly.com/question/953809

#SPJ2

I need to know the area of this trapezoid

Answers

Answer:

28

Step-by-step explanation:

Answer:

The area is 28.

Step-by-step explanation:

A=(a+b/2)h

Plug in the numbers to get (8+6/ 2) 4 to get 28

Change this radical to an algebraic expression with fractional exponents.
[tex]\sqrt{b}[/tex]

Answers

Answer:

is there options for the answer?

Answer:

The answer is b^1/2

Step-by-step explanation:

A floor plan shows the area of a room is 271.25 feet. If the room is 15.5 feet wide how long is it?

Answers

Divide the area by the width:

271.25 / 15.5 = 17.5

The room is 17.5 feet long

Answer:

255.75

Step-by-step explanation:

i subtracted the numbers, i might be wrong

What is a new expression equivalent to 8x - 9 - 12x + 5

Answers

Answer:

Step-by-step explanation:

8x - 9 - 12x + 5 = 8x - 12x - 9 +5

                         = -4x - 4

Add the like terms

What is the equivalent of (n^6k^14)^3

Answers

Answer:

C

Step-by-step explanation:

if you expand, C is the only option that is equivalent

Answer:

C.  (n^15k^35)^2.

Step-by-step explanation:

(n^6k^14)^5

= (n^6)^5 * k^14)^5

= n^30k^70

= (n^15k^35)^2.

Identify each pair of angles vertical, supplementary, or complementary

Answers

Answer:

5. V

6. S

7. V

8. S

9. C

Step-by-step explanation:

Vertical angles: Angles facing each other vertically.

Supplementary angles: Angles that add up to 180 degrees, making a straight line.

Complementary angles: Angles that add up to 90 degrees, making a right angle.

PLS HELP!!!!!!!!!!! A food store has two sacks of rice weighing 26.3 kg each. What quantity of rice was sold during the day, if at the end of the day the total quantity of rice is 35.5 kg?

Answers

Answer:

17.1 kgs

Step-by-step explanation:

There are 52.6 kgs of Rice. 26.3 + 26.3 = 52.6

Take 52.6 and minus 35.5 out of it 52.6 – 35.5 = 17.1

there were 17.1 kgs of rice sold

Write an equation in slope intercept form of the line m=3/2 and contains the point 2,9

Answers

[tex]\bf (\stackrel{x_1}{2}~,~\stackrel{y_1}{9})~\hspace{10em} \stackrel{slope}{m}\implies \cfrac{3}{2} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{9}=\stackrel{m}{\cfrac{3}{2}}(x-\stackrel{x_1}{2}) \\\\\\ y-9=\cfrac{3}{2}x-3\implies y=\cfrac{3}{2}x+6[/tex]

1 point
The volume of a container varies jointly with the square of its radius, r, and its height, h. The
container has a height of 10 centimeters, and radius of 6 centimeters, and a volume of 377 cubic
centimeters. What is the volume of a container with a radius of 4 centimeters and a height of 4
centimeters?
Your answer

Answers

The volume of a container with a radius of 4 centimeters and a height of 4  centimeters is 67.2 cubic centimeter

Solution:

The volume of a container varies jointly with the square of its radius, r, and its height, h

Therefore,

[tex]v \propto r^2 h\\\\v = k \times r^2h -------- eqn\ 1[/tex]

The  container has a height of 10 centimeters, and radius of 6 centimeters, and a volume of 377 cubic  centimeters

Substitute v = 377 and h = 10 and r = 6 in eqn 1

[tex]377 = k \times 6^2 \times 10\\\\377 = k \times 360\\\\k = 1.047 \approx 1.05[/tex]

What is the volume of a container with a radius of 4 centimeters and a height of 4  centimeters?

Substitute k = 1.05 and r = 4 and h = 4 in eqn 1

[tex]v = 1.05 \times 4^2 \times 4\\\\v = 1.05 \times 16 \times 4\\\\v = 67.2[/tex]

Thus volume of a container with a radius of 4 centimeters and a height of 4 centimeters is 67.2 cubic centimeter

Solve the system by substitution.
-2x=3y=9
-x=y

Answers

Answer:

-2x=3y    (we have 9 more) = 9

-4 = 5  x=-4 =9  as -4+5=1

-2x=3y = 1

= +-4 + 4 = 8 + 1 = 9

y=5  

As -2x=3y = 1

= +-4 + 4 = 8 +1 = 9

+ 5 +5 +5 = 15

Step-by-step explanation:

let f(x)=-5+3 and g(x)=-2x^2+5x-1

find the value of each of the following
A.) f(4)
B.) g(-3)
C.) f(x)-f(4)
D.) f(x-4)
E.) g(x+1)

Answers

A.) f(4) = -5 + 3(4) = 7

B.) g(-3) = -2(-3)^2 + 5(-3) - 1 = -2(9) - 15 - 1 = -25

C.) f(x) - f(4) = (-5 + 3x) - (-5 + 3(4)) = -5 + 3x + 5 - 12 = 3x - 12

D.) f(x - 4) = -5 + 3(x - 4) = -5 + 3x - 12 = 3x - 17

E.) g(x + 1) = -2(x + 1)^2 + 5(x + 1) - 1 = -2(x^2 + 2x + 1) + 5x + 5 - 1 = -2x^2 - 4x - 2 + 5x + 4 = -2x^2 + x + 2

if U=(1,2,3,4,5,6,7,8,9)

A=(1,2,3) is A a subset of U and is U a superset of A.

Answers

Answer:

yes A is a SUBSET of U and U is a SUPERSET of A.

Explanation: use curly braces for the elements.

A is a subset of U since U has the elements {1,2,3,4,5,6,7,8,9}, and A has the elements {1,2,3}

U contains the elements listed in set A, so a is a SUBSET of U

Answer:

Below

Step-by-step explanation:

A is a subset of U because 1,2,3 is in set U.

U is a superset of A as U contains 1,2,3 and other elements.

I NEED HELP ASAP Please

Answers

To the left of 0 the numbers are negative. -1 5/6 is the last mark before -2. Each part is split into 6. 2 1/3 is positive so it is to the right of 0. 1/3=2/6 so it would be 2 marks after positive 2.

PLEASE ANSWER QUICKLY
Lloyd used 1/4 pounds of chocolate to make 2/3 gallons of chocolate pudding. If Lloyd's recipe is for 1 gallon of pudding, how many pounds of chocolate will he need to make 1/3 the recipe?
A) 1/4 pounds of chocolate
B) 1/6 pounds of chocolate
C) 1/8 pounds of chocolate
D) 1/12 pounds of chocolate ​

Answers

Answer:1/8

Step-by-step explanation:

To find the unit rate: multiply the numerator by the reciprocal of the denominator.

unit rate =  

1

4

2

3

=  

1

4

×  

3

2

=  

3

8

pounds per gallon

Therefore,  

1

3

the recipe:  

3

8

×  

1

3

=  

1

8

pounds of chocolate

Carson went to pick apples at an orchard.he gave one-third of his apples to his friend Nathan.then he gave one-half of what he had to his friend Nikki.on his way home he dropped one-fourth if what he had left,so that he only had 9 for him and his family.how many apples did Carson pick originally?

Answers

Answer:

36 apples

Step-by-step explanation

Step 1  = he dropped 1/4  and was left with 9  

Finding 1/3 one third of 9 = 3.

Then 9 +3 = 12

Step 2 He parted with 1/2 and was left with 12

12x2=24

Step 3 He parted with 1/3 and was left with 24

= 12+ 12 + 12  = 36    Where 1/3 of 36 = 24

Answer = 36

Answer:

36

Step-by-step explanation:

Carson had x number of apples to start with.

He gave 1/3 to Nathan. Now Carson has (2/3)x apples left.

He gave 1/2 of what was left to Nikki. Now Carson has (1/2)(2/3)x = (2/6)x = (1/3)x apples.

On the way home, he dropped 1/4, so he has 3/4 of the last amount he had, and the number is 9.

(3/4) * (1/3)x = 9

3/12 x = 9

1/4 x = 9

x = 36

Answer: He picked 36 apples.

Check:

Start with 36 apples.

Give 1/3 to Nathan. Now Carson has 24 apples.

Give 1/2 to Nikki. Now Carson has 12 apples.

Drop 1/4. 1/4 of 12 is 3. 12 - 3 = 9.

Hew only had 9 apples left, so 36 is correct.

Brisa's kite is flying above a soccer field at the end of 43 m of string. If the angle of elevation to the kite measures 72degree, and Brisa is holding the kite 1.2 m off the ground. How high above the ground is the kite flying? (Round to the nearest meter)

Answers

Answer:

The height the kite is flying above the ground level to the nearest meter is 42m.

Step-by-step explanation:

this is not drown to scale:

  |\

  |  \

x |   \   43m

  |    \

  |___\

         Angle is 72º

sine = opposite / hypotenuse

sin 72 = x / 43

0.9510565 = x / 43

therefore x = 40.9m

Brisa is holding the kite 1.2 m off the ground, we also need to add 1.2 m to our calculated height of the kite. Thus, the answer is  

           40.9 m + 1.2 m = 42.1 m to the nearest meter is 42m.

Does the point (273, 2) lie on the circle that is centered at the origin and contains the point (0, -4)? Explain?

Answers

Answer:

No, the point (273, 2) does not lie on the circle that is centered at the origin and contains the point (0, -4)

Step-by-step explanation:

The circle centered at the origin that contains the point (0,-4) has equation:

[tex] {x}^{2} + {y}^{2} = 16[/tex]

If the point (273,2) lies on this circle , then it must satisfy this equation:

[tex] {273}^{2} + {2}^{2} = 74533[/tex]

Since

[tex]16 \ne74533[/tex]

The point does not lie on this circle.

Anne has duplicates of 125 stamps in her collection. She gives 50 to Sam, Then she divides the remainder among five friends. If two of her friends but there are stamps together how many will they have?

Answers

Answer:

This is incomplete you can edit and report this answer as not the answer you was looking for. 125-70 is 55 stamps among 5 friends this is either 11 stamps each but some have two together so if it is an odd number like 13 or 17 together then you type in T = 17  O=55-17= ? and you have your answer for the other three.

Step-by-step explanation:

Explain why the function represented by the equation y=ax2+bx+c is quadratic only when a≠0.

Answers

Answer:

see below

Step-by-step explanation:

y=ax^2+bx+c

Let a=0

y=0*x^2+bx+c

y = bx+c

This is the equation of a line.  It is no longer quadratic, but linear.  a cannot equal zero

CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM​

Answers

I hope this helped
1 - i quadrant
2 - iii quadrant
3- y axis
4- iii quadrant
5- iv quadrant
6- x axis
7- i quadrant
8- ii quadrant
9- iv quadrant
10- ii quadrant
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