davids math grades are 85 49 67 and 83 on 4 tests. what grade must he earn on the next test to have a mean of 75

Answers

Answer 1
He must earn a 91
85+49+67+83+91=375
375/5=75

Related Questions

If tan 0 = 12/5 and cos 0 = - 5/13 then what is sin 0

Answers

Refer to the diagram shown below.

Because tan θ = 12/5 and cos θ = -5/13, therefore θ is in quadrant 3.
The sine function is negative in quadrant 3, therefore
sin θ = - 12/13

Answer: - 12/13

plz answer my question. I will make it brainliest answer. have to answer both questions.

Stefan’s family rented a rototiller to prepare an area in their backyard for spring planting. The rental company charged an initial fee of $43 with an additional fee per hour. If they paid $64 after renting the rototiller for 7 hours, what was the hourly fee?
If h represents the hourly fee, which equation models this problem?
h + 43 = 64
h = 64 + 43
7h + 43 = 64
7h + 7 = 64
What was the hourly fee for the rototiller?
$2
$3
$4
$5

Answers

Part 1 is 7h + 43 = 64
Part 2 is $3

Stanley is putting wallpaper strips on his bathroom walls that have a total area of 460 ft2. Each strip of wallpaper covers 22 square feet. How many strips of wallpaper will Stanley need to fully cover his walls? Write your answer using the correct number of significant digits.

Answers

To get the answer you multiply giving the answer of 10,120.

Answer:

21

Step-by-step explanation:

We are given that Stanley  is putting wallpaper strips on his  bathroom walls that have a total area of 460 square  feet.

Area of each strip =22 square feet

We have to find the number of strips of wallpapers  will Stanley need to fully cover his walls.

In order to find the number of strips of wall papers we are dividing the area of walls by area of each strips

Number of strips of wall paper=[tex]\frac{460}{22}[/tex]

Number of strips of wall paper=20.909 =21 strips of wallpaper

Hence, Stanley will need strips of wallpaper to cover fully his walls=21

Determine which statement is a true proportion.

Answers

The answer is option B.  11/12 = (13 3/4) /15

it could be considered a true proportion if both are equal in values.

In order to find this, you need to cross multiply the numerator and the denominator in all of those options and find which give the exact result.

11 x 15  = 13 3/4  x 12

165 = 165



The answer is option B

the ratio of boys to girls in a class is 4:3 are 35 students in the class how many students are boys

Answers

The number of boys in class
=35÷(4+3)(total ratio)×4(ratio of boys)
=20

I am not very good at explaining but I hope it helps ^^
35 : (4 + 3) = 5
5 * 4 = 20 (Boys)
5 * 3 = 15 (Girls)
-----------------
20 + 15 = 35

Add using a number line.

5/6 + (−1 1/6)

Drag and drop the word SUM to the correct value on the number line.

Answers

-1 would be the answer

Answer:

-1

Step-by-step explanation:

We are given that an expression

[tex]\frac{5}{6}-\frac{11}{6}[/tex]

We have to find the correct value of given expression on the number line.

[tex]\frac{11}{6}=1\frac{5}{6}[/tex]

[tex]\frac{5}{6}-\frac{11}{6}[/tex]

[tex]\frac{5-11}{6}=\frac{-6}{6}[/tex]

[tex]\frac{5}{6}-\frac{11}{6}=-1[/tex]

[tex]\frac{5}{6}+(-1\frac{5}{6})[/tex]

When an integer positive and other integer negative and add them .If negative integer is greater and positive integer is small then we go from left to right.

We go [tex]\frac{5}{6}[/tex] step from [tex]-1\frac{5}{6}[/tex]towards right  then we reach at [tex]{-1}[/tex].

Hence, -1 is the correct value of given expression.

Multiplying a number by 4/5 then dividing by 2/5 is the same as multiplying by what number?

Answers

number * 4/5 * reciprocal of 2/5 
number * 4/5 * 5/2 = number * 20/10 = number * 2

2
So say the number equals x.

Therefore, it would be:

x * 4/5 / 2/5

Division is basically multiplying by the second number flipped, like so:

x * 4/5 * 5/2

Then you could just multiply, saying

x * 20/10

or x * 2

So it's the same as multiplying by 2.

g=ca-b. what is a??????!!!!????

Answers

Just rearrange the equation:

G=ca-b
+b    +b    Add B to get it on the other side
______
G+b=ca   
___   __   Divide by c
  c       c

a = (G+b)/c

Make a conjecture about the relationship between a and b if ab=1

Answers

Conjecture that a and b are reciprocals
Also conjecture that a and b have the same sign
Conjecture that  if a > 1 then b < 1

Answer:

a and b are reciprocals

Step-by-step explanation:

what values of x satisfy the equation 0x = 0

Answers

it could either be 1 or 0 because 1*0=0 and 0*0=0

hope this helped you!
anything from 0 to infinity. Anything times 0 is 0. I hope this helped.


Please give brainliest, I really appreciate it :).

16x0 + 2x2 • y –1 i need help because i dont know how to do it

Answers

4y-3. < answer 
16^0=1, 2^2=4
Now we have 1+4*y-1.
1+4(y-1) 
simplify to 4y.
With the parenthesis it would be 4y-3. 

The graph of g(x) is the graph of f(x)=x+6 reflected across the x-axis. Which equation describes the function g?

A. g(x)=x−6
B. g(x)=−x−6
C. g(x)=−6x−6
D. g(x)=−x+6

Answers

ANSWER

The correct answer is [tex]g(x)=-x-6[/tex]

EXPLANATION

The mapping for reflection across the x-axis is given by [tex](x,-y)[/tex]

Given [tex]f(x)=x+6[/tex]. We can let [tex]y=x+6[/tex]

we can write the ordered pair [tex](x,y)[/tex] or [tex](x,x+6)[/tex] as the ordered pair of the preimage of [tex]f[/tex].

The image function will have the ordered pair [tex](x,-y)[/tex]

or

[tex](x,-x-6)[/tex].

That is, we negate all the y-coordinates.

Therefore

[tex]g(x)=-x-6[/tex].

I took the test and this was the answer

For $360, a rock-climbing gym offers yearly membership where members can climb as many days as they want and pay $4 per day for equipment rental. Nonmembers pay $10 per day to use the gym and $6 per day for equipment rental. Write an equation to find the number of visits after which the total cost for a member and the total cost for a nonmember are the same. Then solve the equation.

Answers

So, we have the two equations $4x+$360, and $10x+$6x. x represents how much members pay each day. The total number of visits when the cost for a member and nonmember is the same means we will have to set both equations equal to one another. 
$4x+$360=$10x+$6x 
Combine like terms. 
$4x+$360=$16x 
Subtract $4x on both sides to balance out the equation. 
$12x=$360 
Divide by $12.00 on each side. 
x=30 visits 
To check your work, plug in what x equals or 30 in the original equation. If you come up with a true statement, then you know your answer has to be correct. 
4x+360=16x 
4(30)+360=16(30) 
120+360=480 
480=480 
Because this is a true statement, you can be certain that the total number of visits when the cost of a member and a nonmember will be the same is 30 visits. Hope I helped! Brainliest too please.

153 is the product of 9 and Chad height what is the answer

Answers

17 × 9 = 153
I'd say 17

Convert 19 over 2 to a decimal using long division.

Answers

19/2 = 19 divided by 2 = 9.5

Hope this helped.

Answer:

9,5, The answer is 9.5...


I really need help with this problem thank you.

Charlie wants to order lunch for his friends. He'll order 6 sandwiches and a $2 kid's meal for his little brother. Charlie has $32. How much can he spend on each sandwich is they are all the same price?

Choose two answers: One for inequality that models this situation and one for the correct answer.

A. Inequality: 6x+2 > ( greater than or equal too ) 32

B. Inequality: 6x+2 < ( less than or equal too ) 32

C. Answer: $13 or less

D. Answer: $5 or less

E. Inequality: 2x+6 < 32

F. Inequality: 2x+6 < ( less than or equal too ) 32

Answers

So, obviously, since one of the prices is given, which is $2.00 for the kid's meal, then you need to subtract that from his $32.00 total to know what number you need to divide into the 6 sandwiches. So, so far you have $30.00. If you divide $30.00 by the 6 sandwiches, you will find out he could only spend $5.00 per sandwich. So basically, you got the expression of (32 -2) / 6 in order to find out that your answer is $5.00. Looking at you answer choices, I can see right away that D is correct. For the inequality, I can see that B would be the correct answer for this problem because he can't go over budget. So, your answers are B and D.

Inequality that models the given situation is given by 6x+2 ≤ 32.

Price of each sandwich is equals to $5 or less.

What is inequality?

" Inequality is defined as the algebraic expression which represents the relation between the variables using the sign of inequality < , > , ≤ , ≥."

According to the question,

Given,

Number of sandwiches = 6

Amount spend on kids meal = $2

Total money with Charlie = $32

'x' represents the cost of each sandwich

As per the condition inequality is given by,

[tex]6x+2 \leq 32\\\\\implies 6x \leq 32 - 2\\\\ \implies 6x \leq 30 \\\\ \implies x \leq \frac{30}{6} \\\\\implies x\leq \$5[/tex]

Hence, Option(D) is the correct answer

Learn more about inequality here

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How many degrees is 1/4 of a circle or 1/4 of a full turn? And how many degrees is 1/6 of a circle or 1/6 of a full turn ?

Answers

It will be 90 degrees for 1/4 of a circle and 60 degrees for 1/6 of a circle.

Explain how to model the multiplication of 3 and ‒4 on a number line

Answers

First, start at zero. Now, because we are multiplying -4 by 3, we will jump over by 4 to the left  ; 3 times on the number line. We should reach -12, and if we check our work, 3 x -4 = -12.                                            

Final answer:

To model the multiplication of 3 and -4 on a number line, start at zero and make three moves to the left by 4 units, ending up at -12. This demonstrates the rule that multiplying numbers with opposite signs results in a negative product.

Explanation:

To model the multiplication of 3 and -4 on a number line, you can follow these steps:

Start at zero on the number line.

Since you are multipling a positive number by a negative number, you will move in the negative direction (to the left).

Make three moves (corresponding to multiplying by 3), each 4 units to the left. This represents adding -4 three times.

Where you end up on the number line is the product of 3 and -4, which is -12.

This method of multiplication on a number line illustrates the rule that when two numbers multiplied have opposite signs, the answer has a negative sign, such as in the example ( -4) x 3 = -12.

3918 divide 92 long divided

Answers

The answer to this division problem is 42.586

Solve for D.

4 - 3d = d - 8

Answers

Simplify both sides.4−3d=d−84+−3d=d+−8−3d+4=d−8Subtract d from both sides.−3d+4−d=d−8−d−4d+4=−8Subtract 4 from both sides.−4d+4−4=−8−4−4d=−12Divide both sides by -4.−4d−4=−12−4d=3

Your answer is d=3.
The answer to your equation is d = 3

Suzanne can work 10 math problems in 15 minutes. How many can she work in an hour and a half?

Answers

Hey there!

10-15
x-90
so 15x=900
 x=60

Jacinta is working on a jigsaw puzzle that has 403 pieces.she has completed 1/4 of the puzzle. About how many pieces she has placed in the puzzle

Answers

answer is 100.8 pieces. hope this helps a lot

A school library has 260 DVDs in its collection. Given that 45% of the DVDs are about science and 40% or about history how many of the DVDs are about other subjects?

Answers

39 DVDs are about other subjects

39 DVDs are about other subjects.

To determine the number of DVDs about other subjects in the school library, we must first calculate the number of DVDs dedicated to science and history. We start by finding 45% of 260 DVDs for science and 40% of 260 DVDs for history.

Science DVDs: 45% of 260 = 0.45 * 260 = 117
History DVDs: 40% of 260 = 0.40 * 260 = 104

Adding the numbers of science and history DVDs gives us the total number of DVDs not about other subjects:

117 (Science) + 104 (History) = 221

To find the number about other subjects, we subtract the total number of science and history DVDs from the total collection:

260 (Total) - 221 (Science and History) = 39 DVDs about other subjects.

You’ve just been trick-or-treating and snagged a big bar of chocolate! The bar is eight pieces high and nine pieces long. Can you work out how many times you have to break the bar so that it is separated into individual squares?

71

49

63

72

Answers

        This is a tricky question.          First you have to break the whole bar horizontally 7 times ( because it is 8 pieces high ). After that you will have 8 rows of chocolate with 9 pieces each.   Then you will have to break each row 8 times.        Finally you will have individual squares.        So : 7 +  8 * 8 = 7 + 64 = 71       Answer: A ) 71.

The bar of chocolate should be broken [tex]\boxed{\bf 71\text{\bf\ times}}[/tex], so that it is separated into individual squares.

Further explanation:

Given that the bar of chocolate is eight pieces high and nine pieces long.

First break the chocolate horizontally [tex]7\text{ times}[/tex] since, it is eight pieces high.

Now, the broken piece of chocolate is divided into nine single strips of eight pieces each.

Each nine single strip is broken [tex]8\text{ times}[/tex].

Therefore, total number of times the chocolate bar is broken is calculated as follows:

[tex]\begin{aligned}\text{Total number of times}&=7+(8\cdot 8)\\&=7+64\\&=71\end{aliogned}[/tex]

Thus, [tex]71\text{ times}[/tex] the bar of chocolate is broken so that it is separated into individual squares.

Now, break the chocolate vertically [tex]8\text{ times}[/tex] since, it is nine pieces long.

Now, the broken piece of chocolate is divided into nine single strips of nine pieces each.

Each nine single strip is broken [tex]7\text{ times}[/tex].

Therefore, total number of times the chocolate bar is broken is calculated as follows:

[tex]\begin{aligned}\text{Total number of times}&=8+(9\cdot 7)\\&=8+63\\&=71\end{aliogned}[/tex]

Thus, [tex]71\text{ times}[/tex] the bar of chocolate is broken so that it is separated into individual squares.

Learn more:

1. Learn more about numbers https://brainly.com/question/4736384

2. Learn about place value chart https://brainly.com/question/1931524

Answer details:

Grade: Middle school

Subject: Mathematics

Chapter: Counting

Keywords: Trick, treating, snagged, big bar, chocolate, eight pieces, nine pieces, long, high, break, separated, individual, squares, 71, 72, 49, 56.

A train traveling south leaves the station at a constant rate of 62 kilometers per hour. A second train traveling north leaves the station at the same time traveling at a constant rate of 68 kilometers per hour. How many hours after the trains leave will they be 455 kilometers apart?
A 3.5


B.
4.5


C.
5.5


D.
6.5

Answers

Answer: 3.5 hours

Step-by-step explanation:

68 + 62 = 130

455 / 130 = 3.5

Hope this helps you! :)

Answer:

3.5

Step-by-step explanation:

I got it right on the test

A company finds that on average, they use 43 minutes for each meeting.

An employee sketches a graph to show the total amount of time in minutes, T, used for m meetings. The graph shows the value of T for 1 to 5 meetings.

If the employee counts by 10's, what should be the largest value on the T-axis of his or her graph so that the scale is the most appropriate for the given information?

A. 10

B. 40

C. 50

D. 200

E. 210

F. 220

G. 250

Answers

Answer:

F. 220

Step-by-step explanation:

Showing the time for 1 to 5 meetings means we would go from 43(1) = 43 to 43(5) = 215 for the y-axis (time in minutes).

We are counting by 10s.  The two closest tens to 215 are 210 and 220.  However, in order to show 215 on the graph, we must go up to 220.

Answer: 220

Step-by-step explanation:

Helppppp! After 2 1/4 h, a chainsaw has used 2 13/16 gal of fuel.

How many gallons of fuel did the chainsaw use each hour?

Enter your answer as a mixed number in simplest form.


Answers

every 2 1/4 hour, 2 13/16 gallons#every 1 hour, x gallons
x=(1 × 2 13/16)/(2 1/4)=(45/16)/(9/4)=(45×4)/(16×9)=180/144=90/72=10/8=5/4= 1 1/4 Gallons

Answer:

[tex]1\frac{1}{4}[/tex]gallon/hour

Step-by-step explanation:

After [tex]2\frac{1}{4}[/tex] hour a chainsaw has used [tex]2\frac{13}{16}[/tex] gallons of fuel.

[tex]2\frac{1}{4}[/tex] hours = [tex]\frac{9}{4}[/tex] hours

[tex]2\frac{13}{16}[/tex] gallons = [tex]\frac{45}{16}[/tex] = 2.8125 gallons

The chainsaw used fuel after [tex]\frac{9}{4}[/tex] hours = [tex]\frac{45}{16}[/tex] gallons

The chainsaw used fuel in 1 hour = [tex]\frac{\frac{45}{16}}{\frac{9}{4}}[/tex]

= [tex]\frac{45}{16}[/tex] ÷ [tex]\frac{9}{4}[/tex]

=  [tex]\frac{45}{16}[/tex] × [tex]\frac{4}{9}[/tex]

= [tex]\frac{180}{144}[/tex]

= [tex]\frac{90}{72}[/tex]

= [tex]\frac{30}{24}[/tex]

= [tex]\frac{15}{12}[/tex]

= [tex]\frac{5}{4}[/tex]

= [tex]1\frac{1}{4}[/tex] gallons of fuel

Chainsaw used [tex]1\frac{1}{4}[/tex] gallons of fuel in each hour

how old is a man that lived 86753.09 seconds? report the answers in years.

Answers

he has lived for 1/365 of a year

which equation has a slope of 2/3 and a y-intercept of 2

Answers

You said WHICH EQUATION.

You did not list the equations.

What is the product? Enter your answer as a fraction, in simplified form, in the box. 38⋅(−36)

Answers

-13 0/1
Hope this helps sorry if its wrong.

The fraction is -1,3680/10.

The given expression is 38⋅(−36).

We need to find the product of the given numbers.

What is a fraction?

In Mathematics, fractions are represented as a numerical value, which defines a part of a whole. A fraction can be a portion or section of any quantity out of a whole, whereas the whole can be any number, a specific value, or a thing.

Now, 38⋅(−36)=-1,368

Multiply and divide the number by 10.

That is, -1,368 × 10/10

=-1,3680/10

Therefore, the fraction is -1,3680/10.

To learn more about the fractions visit:

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