Mathematics College

Select all the correct answers.
Which values of x are solutions to this equation?
-1/2+ 5x = 8
11.5
-1.5
-2
-8
8
3

Answers

Answer 1

Answer:

x = 1.7

Step-by-step explanation:

Given

-½ + 5x = 8

Required

Find x

-½ + 5x = 8

Multiply both sides by 2

-1 + 10x = 16

Collect like terms

10x = 16 + 1

10x = 17

Divide both sides by 10

x = 1.7

Answer 2

Answer:

8, and 2

Step-by-step explanation:

(btw the three in the question is suppose to be a 2)

but those two are the only ones that you can add and the equation still equal 8.  

<3

Related Questions

If f(x)= x/2-2 and g(x)= 2x^2+x-3, find (f+g)(x).

Answers

Answer:

2x^{2} + \frac{3}{2} x - 5

Step-by-step explanation:

(f+g)(x) = f(x)+g(x)

(f+g)(x)= [tex]\frac{x}{2} -2[/tex] + [tex]2x^{2} +x-3[/tex] = [tex]2x^{2} + \frac{3}{2} x - 5[/tex]

f (x) = 3x^2 - 10x + 4

Answers

Answer: (5/3, -13/3)

Step-by-step explanation:

pls help asap will give brainliest!!!

Answers

Answer:

step two added the 9 to each side :)

Solve x4 - 11x2 + 18 = 0.

Answers

Answer:

x=√2, x=-√2, x= 3 and x=-3

Step-by-step explanation:

We need to solve the equation x^4 - 11x^2+18=0  

We can replace x^4 = u^2 and x^2 = u

So, the equation will become

u^2 -11u+18 = 0

Factorizing the above equation:

u^2 -9u-2u+18 =0

u(u-9)-2(u-9)=0

(u-2)(u-9)=0

u=2, u=9

As, u = x^2, Putting back the value:

x^2 =2 , x^2 =9  

taking square roots:

√x^2 =√2 ,√x^2=√9  

x=±√2 , x = ±3

so, x=√2, x=-√2, x= 3 and x=-3

Answer:

The second answer is correct.

Step-by-step explanation:

Mark brainliest if correct please

Solve

11× +9-7


8s- 11s+ 6s ​

Answers

Answer:

i dont know  if this the answer for the first on x=1.45454545455 and the other on is 3s

Step-by-step explanation:

plz help me!?!?

and thank u

Answers

Answer:

-4.8+2.5-7.8

= -10.1

Step-by-step explanation:

Freddie has a bag of jelly beans that has the following colours. 2 purple 1 red 4 yellow 3 orange. What is the probability that Freddie will select an orange jelly bean?\ 10% 20% 30% 40%


100 point

Answers

Answer:

30%

Step-by-step explanation:

3 out of the ten beans are orange

3/10=30%

Answer:

The answer is 30%.

Step-by-step explanation:

There are 2 purple, 1 red, 4 yellow, and 3 orange jelly beans. If you add all those together, you will get 10. So, 3 out of the 10 jelly beans are orange. That is 3/10 in fraction form. 3/10 equals to 30%, so that is your answer.  

Solve and show all steps


PLSSS ASAP I NEED HELP TYSM!!!!

Answers

Answer:

n < 6

Step-by-step explanation:

I multiplied the entire equation by 3 to remove the fraction. This got me:

12 + n < 18

I then subtracted 12 (inverse operations) to get:

n < 6

I hope this helps!

Answer:

n=1

Step-by-step explanation:   n/3=3+4 is less than 6

23) Find the area of the semi-circle. 18 in​

Answers

Answer: 127.23 in. ^2

Step-by-step explanation: if the radious is 9 with is half of 18in that area of a whole cicle would be 254.47in. so just divide by 2

Please answer this pleease

Answers

Answer:

D

Step-by-step explanation:

it is 200 km north and 50 east from the airport meaning it is 250 km away from the airport 100west and 50 north meaning it is 130 km away from the airport 130 + 250 = 380 km. 380 km is closest to 400 so D.

Asphere has a radius of 27 inches. A horizontal plane passes through the center of the sphere.
Part 1 out od 2
Describe the cross section formed by the plane and the sphere.

Answers

9514 1404 393

Answer:

  circle of radius 27 inches

Step-by-step explanation:

Anywhere a plane cuts a sphere, the cross section is a circle. When the plane includes the center of the sphere, the circle has the same radius the sphere has.

The cross section is a circle of radius 27 inches.

Complete the table below for the function y= 3x

Answers

Answer:

the first one equals 3 the second  one is 6 and the third one is 9

Step-by-step explanation:

Answer:

:D

Step-by-step explanation:

thx i needed this answer

Please answer soon ty!

Answers

Answer:

A

Step-by-step explanation:

4.22

3
45 X
Pleaseee help meeee

Answers

Answer:

135..........................

Answer: 45*3= 135

135 is the answer for 45*3.

Uma used 1/2 cup of milk for 2/3 of a cake How much milk will she use for the whole cake?

Answers

Answer:

Then you will use 2/2

Step-by-step explanation:

1/2 (3x + 5) = 7
anyone can someone explain this problem to me so I can understand it better.

Answers

The answer is x = 3

3x + 5 / 2 = 7
3x +5 = 7 x 2
3x + 5 = 14
3x = 14 - 5
3x = 9
x = 9/3
x = 3

How to solve:

5 1/2 + x/6 ≤ 3 1/3

Answers

Answer:

x≤-91

Step-by-step explanation:

Luis solves the following system of equations by elimination.
5s+ 3t = 30
2s+3t=-3
What is the value of s in the solution of the system?

Answers

the value of s is 11

X^9/7 convert from exponent form to radical form

Answers

Answer:

[tex]x^{\frac{9}{7}} = \sqrt[7]{x^9}[/tex]

Step-by-step explanation:

You can solve this by realising that the denominator of a fractional exponent can be expressed as the base of a radical.

Note also that the order does not matter.  You could also express it as

[tex]\sqrt[7]{x}^9[/tex]

The reason this works is that you're effectively breaking the exponent into fractions.  The first answer is the equivalent of:

[tex](x^9)^{1/7}[/tex]

and the second would be:

[tex](x^{1/7})^9[/tex]

In both cases, the exponents would be multiplied, giving the same result.

what is the difference between online school and in-person
pls just write some down for a project thanks :)

Answers

Answer:

The difference between online school and in person school is that online is online and inperson is in person.

Step-by-step explanation:

Answer:

Online-School is worse and In-person is better bc when your at home your not face to face with the teacher and you can get bad grades and when your at school you can get better grade and online- school is hard bc you have lots of homework and it complicated but have a great day

Step-by-step explanation:

Question Progress
Homework Progress
23/ 47 Marks
8296
Expand and simplify (x + 2)(x + 1)
Expanding and Simplifying - Double Set of Br View One Minute Version
Overview

Answers

(x+2)(x+1) = x^2 + x + 2x + 2

simplify it
x^2 + 3x + 2

Which description could be written as a linear function?

a
eight more than twice a number
b
nine more than one divided by a number
c
ten more than the square of a number
d
three more than the product of two numbers

Answers

Answer:

a

Step-by-step explanation:

because it is more then eight numbers

is -√16 a rational number or irrational?

Answers

Answer:

irrational

Step-by-step explanation:

15% of what number is 12? ​

Answers

Answer:

1.8 my brotha

Step-by-step explanation:

por que si es tru

NEED HELP ASAP WILL GIVE BRAINLIEST 100pts

Use the right trig notes to complete the following questions. upload your completed task at the bottom of the assignment for extra credit.

Answers

Answer:

What type of math is this?

Step-by-step explanation:

question can u put a picture that looks more clear is blury

I will give brainiest to whoever answers correctly !!

Answers

Answer:

The country's population decreased about 5.8 % during this time period.

Step-by-step explanation:

Population in 1990 = 164 million

Population in 2010 = 155 million

Determine the percent decrease

The formula used is: [tex]Percent\:Decrease=\frac{Initial\:Value-New\:Value}{New\:Value}\times 100[/tex]

We have :

Initial Value = 164 million (164,000,000)

New Value = 155 million (155,000,000)

Finding percent decrease

[tex]Percent\:Decrease=\frac{Initial\:Value-New\:Value}{New\:Value}\times 100\\Percent\:Decrease=\frac{164,000,000-155,000,000}{155,000,000}\times 100\\Percent\:Decrease=\frac{9,000,000}{155,000,000}\times 100\\Percent\:Decrease=5.8\%[/tex]

So, The country's population decreased about 5.8 % during this time period.

PLEASE HELP!
If Southbrook Middle School has 850 students, then how many students participate in the various number of sports: I download a picture with the question. Thank You!

Answers

Answer:

102 Non-Participation

357 One sport

238 Two sports

153 Three sports

Step-by-step explanation:

Four spheres of radius 6cm just fit inside a cylinder. Calculate the volume inside the cylinder that is empty. Leave your answer in the terms of pi

Answers

Answer:

576 pi cm3

Step-by-step explanation:

The translation that moves a figure down 4, to the right 2 is
1. (x + 4, y - 2)
2. (x - 2, y + 4)
3. (x + 2, y - 4)
4. (x - 4, y + 2)

Answers

I think it is the 3 on

HELPPP PLEASEEE ASAPP

Answers

Answer:

1.7

Step-by-step explanation:

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