Ted needs an average of at least 70 on his three day history tests. He has already scored 80 and 60 on two tests. What is the minimum grade Ted needs on his third.

Thank you for your assistance ​

Answers

Answer 1

Answer:

Step-by-step explanation:

To solve, we first need to know how to find the average of a group of numbers. To find the average of a group of numbers, you add all the numbers together and divide that answer by the number of numbers you have. For instance, to find the average of 1, 2, 3, 4 and 5, we would add all the numbers together, which would equal 15. We would then divide that number by 5, because there are 5 numbers total: 15/5 = 3. So the average is 3.

Now, to find the average in your problem, we need to look at what we know:

He received an 85 and 60 on two of the test scores

He needs an overall average of 70

Let's set this up in equation form:

%2885+%2B+60+%2B+x%29%2F3+%3E=+70

Now, let's get rid of our fraction on the left. We can do this by multiplying the entire equation by 3, giving us:

85 + 60 + x >= 210

Next, combine the numbers on the left, which will give us:

145 + x >= 210

Finally, subtract 145 from both sides, which will give us our answer:

145 + x - 145 >= 210 - 145 =

x >= 65

So, in order to average at least 70, he must score a 65 or higher on his third test.


Related Questions

Solve the problem

I will mark Brainlyest

Answers

Answer:

X=12

A=62

B=48

Step-by-step explanation:

180=70+(4x)+(x+50)60=5x 12=x

A: 12+50=62

B: 4×12 =48

In which situation would you most likely round numbers? (A) When you need to measure a precise amount of butter for cake recipe
(B) When you need to find out exactly how many guests are coming to your birthday party
(C) when you need to figure out about how much of a Carton of milk a box of cookies will cost together
(D) when you need to count the number of birthday cards and gifts you receive to be sure you didn’t lose any

Answers

Answer:

C

Step-by-step explanation:

its the only one that doesnt say precise or exactly or sure

Answer: C

Step-by-step explanation: when you need to figure out about how much of a Carton of milk a box of cookies will cost together. (You see it says "about" which means get it near the exact point. As for the others it uses words like "precise, exactly, etc".

HELP ME PLEASE!!! 12 points!

Answers

Answer:

-18

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

Parentheses first so

7-10=-3

then the brackets

-2-3-15=-20

-4-20=-24

so thats the numerator

the denominator is

2(-1)=-2

-20/-2= ?

We can remove the negative because two negatives make a positive then we would divide by 2

20/2=10

and that's our answer! :)

simply the following expression

Answers

Answer:

C.

x^8 / y^28 z^20

Step-by-step explanation:

Answer: c

Step-by-step explanation:

= [tex](\frac{y^{7} z^{5} }{x^{2} } )^{-4}[/tex]

[tex]= (\frac{x^{2} }{y^{7} z^{5} } )^{4}[/tex]

[tex]= \frac{x^{8} }{y^{28} z^{20} }[/tex]

please give me a brainliest answer

2 de secundaria pajina 25 contestada

Answers

i don’t know i don’t speak spanish

pls help :( i think i’m
supposed to add the matrices ???

Answers

I HOPE IT WILL HELP YOU.

THANK YOU.

I HOPE YOUR DAY GOES GREAT.

Pls help. Thank you!

Answers

Answer:

x = 15

Step-by-step explanation:

Here's an easy way to solve this:

OAP appears to be a right isosceles triangle. Angle O is a right angle, so the other angles are congruent (the same).

180-90 = 90

90÷2 = 45

3x = 45

x = 15

hoose the statement that describes its
solution.
3(x + 8) - 9x = 6(4- x)
O There is no solution.
оо
There is only one solution.
ws
о
All real numbers are solutions.

Answers

Answer:

3rd option

Step-by-step explanation:

3(x + 8) - 9x = 6(4 - x) ← distribute parenthesis on both sides

3x + 24 - 9x = 24 - 6x , collect like terms on left side )

24 - 6x = 24 - 6x

Since both sides are the same then any value of x will make the equation true.

That is all real numbers are solutions

Answer: C g(x) is a function because f(x) is one-to-one.

Step-by-step explanation:

(4,-3),m=-1 in standard form

Answers

Answer:

Step-by-step explanation:

m = -1 ;  ( 4 , -3)

y - y1 = m(x - x1)

y - (-3) = -1(x - 4)

y+ 3 = -x + 4

Add  x to both side.

x +y + 3 = 0

Subtract 4 from both sides

    x + y  + 3 - 4 = 0

x +y - 1 = 0

What is the volume of this rectangular prism

Answers

Answer:

Do 7 x 4 = 28 and the bottom is 28

do answer is 56 enjoy brainliest

On a map, 1 inch equals 15 miles. Two cities are 7 inches apart on the map. What is the actual
distance between the cities?
The actual distance between the cities is miles.

Answers

Answer:

105 miles

Step-by-step explanation:

The ratio you have is 1:15

So you must multiply 7 by 15 to find the actual distance in miles.

7*15=105

T.
G
1.6 cm
6 cm
6 cm

-
Find volume

Answers

Answer:

57.6......

Step-by-step explanation:

v=lxbxh...........

find value of each variable and the measure of each label (2x+32) (3x-5)

Answers

Answer:

Step-by-step explanation:

(2x+32) (3x-5)

(2x+3x) (32-5)

(5x*27)

hope this helps

I need help with this problem

Answers

Explanation: 416 feet^2

The room is 12 by 14
And walls are 8ft tall

There are two walls that have the dimensions of 12(8) and two that have the dimensions of 8(14).

The final equation would be…
2(96) + 2(112)

Simplify

192 + 224 = 416

(x-5)^2-1=0
tìm x giúp mik vs

Answers

X= 6 and X=4 ☺️, have a good day

please help im confused

Answers

Here are the answers hope they help

Hi there!

We are given two exterior angles. Don't panic! We know that exterior angles form a linear pair, which means they add up to 180 degrees.

180-130=50

180-96=84

Now that we have those angles, how can we work out the value of x?

Turns out that all the angles in any triangle add up to 180 degrees.

So

180-84-50=46 degrees.

So the value of x is 46 degrees.

Now let's work out the value of x in the next problem.

180-126=54

180-54-43=83 degrees

So the value of x in this problem is 83 degrees.

Let's move on to the third problem.

At first, it seems like we do not have enough information.

If we know that the right angle is 90 degrees (it is shown by a little square), then we have enough information.

180-90-43=47 degrees

So the value of x is 47 degrees.

Hope this helps you!

~Just an emotional teen who listens to her favorite song "Try Everything"

[tex]SilentNature[/tex]

what is the slope of the line?

Answers

Answer:

Slope = -3

Step-by-step explanation:

From (-1,0) to (0,-3), the line has a change of -3/1 (change in y/change in x) or -3

1. Find two points on the line:
(-1, 0) and (0, -3)

2. Calculate the slope

slope = change in y / change in x

0 - -3 = 3
-1 - 0 = -1
3 / -1 = -3

The slope is -3

WILL MARK BRAINLIEST!
Simplify the term 3x - 2 (5x -3)

Answers

Answer:

No solution

Step-by-step explanation:

Combine like terms on the right hand side of equation

3x + 2 = 3x -1

This cannot be simplified so there are no solutions.

Answer:

the answer is − 7 + 6

Step-by-step explanation:

multiply -2 times 5 and -2 times -3

you should get 3x-10x+6

combine the terms, you should get -7x+6

need help dont understand it

Answers

Answer:

It is Linear Increasing.

Step-by-step explanation:

If it is a straight line, it is a linear function. if it is NOT a straight line, then it is a non-linear function.

Edit: When the line starts from the top of the y-axis, then it is decreasing. If the line starts from the Origin Point (as shown in the picture you included), then it is increasing. I hope this helps you in Linear and Non-linear relationships.

A circular flowerbed is surrounded by a path 2.5m wide .The diameter of the flower bed is 40m. Find the area of the path .​

Answers

Answer:

The answer is in the photo

Step-by-step explanation:

what is 1>x346+X=123=

Answers

Answer:

1>x^346+X=123

Find the inverse function in slope-intercept form (mx+b):

f(x)=2x-8

Answers

Answer:

[tex]\sf f^{-1}(x) = \dfrac{x}{2}+4[/tex]

Step-by-step explanation:

A function is given to us and we need to find the inverse of the function in slope intercept form . The given function is ,

[tex]\sf\implies f(x) = 2x - 8 [/tex]

Let us assume that y = f(x) , so that ,

[tex]\sf\implies y = 2x - 8 [/tex]

Now interchange the positions of x and y , we have ,

[tex]\sf \implies x = 2y - 8[/tex]

Solve for y in terms of x ,

[tex]\sf \implies 2y = x + 8 \\\\\sf\implies y =\dfrac{x}{2}+4 [/tex]

This is the inverse of the function in slope intercept form. Now we can replace this y with f-¹(x) , as ,

[tex]\sf \implies \boxed{\pink{\frak{f^{-1}(x) = \dfrac{x}{2}+4}}}[/tex]


PLEASE HELP
Rewrite the equation in Ax+By=C form.
Use integers for A, B, and C.
y+ 6 = 5(x-3)

Answers

Answer:

5x - y = 21  

Step-by-step explanation:

Given the linear equation in point-slope form, y + 6 = 5(x - 3):

In order to transform the given equation into its standard form, Ax + By = C, start by distributing 5 into the parenthesis:

y + 6 = 5(x - 3)

y + 6 = 5x - 15

Subtract 5x from both sides:

- 5x + y + 6 = 5x - 5x - 15

- 5x + y + 6 = - 15

Subtract 6 from both sides:

- 5x + y + 6  - 6 = - 15 - 6

- 5x + y = - 21

Divide both sides by -1:

[tex]\frac{-5x + y}{-1} = \frac{-21}{-1}[/tex]

5x - y = 21    

Math question.

I’ll give brainliest, thanks and 5 stars to the correct answer that has been explained properly.

Answers

Answer:

C) 25%

Step-by-step explanation:

let salt be 's'

let water be 'w'

[tex]\frac{s+1}{w+s+1} = 33\frac{1}{3} \\\\\frac{s+1}{w+s+1} = \frac{1}{3} \\\\\frac{w + s + 1}{3} = s+1\\\\3s +3 = w+s+1\\w = 2s+2\\\\\frac{s+1}{w+1+s+1} = \frac{3}{10} \\\\\frac{3(w+s+2)}{10} = s+1\\\\3w+3s+6 = 10s+10\\**w = 2s+2\\3(2s+2) + 3s + 6 = 10s+10\\\\6s+6+3s+6 = 10s+10\\9s+12 = 10s+10\\-s = -2\\s = 2\\\\w= 2s+2\\w=2*2+2\\w = 6\\\\\frac{2}{2+6} = \frac{2}{8} = 0.25[/tex]

0.25 = 25%

5/8x2/3 ........................

Answers

Answer:

The answer is 5/12. I hope this helps you! :)

8xy^3*xy ^8 plsssssssssssssssssssss help

Answers

Answer:

x • (x^3 - 3x^2y + 3xy^2 + 7y^3)

Step-by-step explanation:

(8x • (y^3)) +  x • (x - y)^3

2^3xy^3 +  x • (x - y)^3

Evaluate :  (x-y)^3   =   x^3-3x^2y+3xy^2-y^3

Pull out like factors :

x^4 - 3x^3y + 3x^2y^2 + 7xy^3  =

x • (x^3 - 3x^2y + 3xy^2 + 7y^3)

x^3 - 3x^2y + 3xy^2 + 7y^3 is not a perfect cube

A plane travels a distance of 6,000 km in a time of 6.2 hours.
What is its average speed rounded to the nearest whole number?

Answers

Answer:

distance =6,000km

time =6.8 hrs

speed =distance /time =6,000/6.8=60000/68=882 km/h

plz make brainiest

Answer all questions I'll give 50 pts.

Answers

Answer:

14. 6 × 10^7

15. 6 × 10^14

16. 7.2 × 10^-7

17. 8.5 × 10^-2

18. 23 × 10^5, 6.9 × 10^6, 72 × 10^5

19. 1.89 × 10^-4, 2.5 × 10^-4, 19 × 10^-3

20. 3.125 × 10^-5

21. 3.1536 × 10^9

Step-by-step explanation:

14.

(2 × 10^5)(3 × 10^2)(200000)(3 × 10^2)(200000)(300)600000006 × 10^7  

15.

(1.5 × 10^5)(4 × 10^9)(150000)(4 × 10^9)(150000)(4000000000)6e + 146 × 10^14

16.

(6 × 10^-4)(1.2 × 10^-3)(0.0006)(1.2 × 10^-3)(0.0006)(0.0012)7.2e-77.2 × 10^-7

17.

(5 × 10^3)(1.7 × 10^-5)(5000)(1.7 × 10^-5)(5000)(0.000017)0.0858.5 × 10^-2

18.

72 × 10^5 = 72000006.9 × 10^6 = 690000023 × 10^5 = 2300000  23 × 10^5, 6.9 × 10^6, 72 × 10^5

19.

19 ×  10^-3 = 0.0192.5 ×  10^-4 = 0.000251.89 × 10^-4 = 0.000189 1.89 × 10^-4, 2.5 × 10^-4, 19 × 10^-3
i’m answering so the other can get brainlist:))) and the answers r on top btw

which line is parallel to the line whose equation is 4x 3y = 7, and also passes through the point (- 5, 2)?

Answers

Answer:  [I assume:  "4x 3y = 7" is really 4x + 3y = 7]

y = -(4/3)x -14/3

Step-by-step explanation:

Rewrite this as y=mx+b, where m is the slope.  

4x + 3y = 7

3y = -4x +7

y = -(4/3)x +(7/3)

The slope is -(4/3)

A parallel line will have the same slope, but a specific value of b to allow it to go through the given point (-5,2):

y = -(4/3)x + b

Enter the point and solve for b:

2 = -(4/3)(-5) + b

2 = (20/3) + b

b = 2 - (20/3)

b = 6/3 - 20/3

b = -14/3

y = -(4/3)x -14/3

What will be the coordinates of the point A(7, -2) after a reflection across the y axis? *

Answers

Answer:

I believe it should be (-7,-2)

Step-by-step explanation:

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