( please explain it to me!) 7. Wei's mark on a test was 39. This
mark was 60%. What was the total
possible mark?

Answers

Answer 1

Answer:

65

Step-by-step explanation:

Since 39 is equal to 60%, and 60% is also equal to 60/100, then 39/x (x is the total we are solving for) is equal to 60/100.

Cross multiply so 39/x = 60/100

39*100 = 60x

3900 = 60x (divide both sides by 60)

65 = x


Related Questions

Paul spent $48.00 on three tickets to a concert. Janis spent $90.00 on five tickets to the same concert. How much did each ticket cost for the cheaper individual ticket?

Answers

Answer:

Paul's tickets costed 16 dollars each

while

Janis' s tickets costed 18 dollars each

Answer:

$16

Step-by-step explanation:

48 divided by 3 is 16. 90 divided by 5 is 18. Paul is getting the better deal. Each ticket is $2 less.

Can someone help with this please?

Answers

Given:

The table represents a linear function.

To find:

The y-intercept, slope and equation of linear function.

Solution:

Consider any two points from the given table, i.e., (0,-5) and (1,-1).

Equation of line is

[tex]y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]

[tex]y-(-5)=\dfrac{-1-(-5)}{1-0}(x-0)[/tex]

[tex]y+5=\dfrac{-1+5}{1}(x)[/tex]

[tex]y+5=4x[/tex]

Subtracting 5 from both sides, we get

[tex]y=4x-5[/tex]

On comparing this equation with slope intercept form [tex]y=mx+b[/tex], where, m is slope and y-intercept is b, we get

[tex]m=4,=-5[/tex]

Therefore, y-intercept is -5, slope is 4 and equation is [tex]y=4x-5[/tex].

HELP ME PLS BRAINLIST QUICK

Answers

Answer:

its the second choice

Step-by-step explanation:

because they need to be opposite plus minis things

b) 7p + 6q- 2p + q = ?

Answers

[tex]7p + 6q - 2p + q \\ = (7p - 2p) + (6q + q) \\ = 5p + 7q[/tex]

Answer:

5p+7q is the answer

Step-by-step explanation:

Based on data collected 5 years ago, a hotel expects that 24% of all guests will request smoking rooms. The hotel suspects that this proportion has decreased. To test this hypothesis, the hotel takes a random sample of 223 guests. Out of this sample, 39 guests requested smoking rooms. Conduct a test to check for evidence that the proportion of guests requesting smoking rooms has in fact decreased. Use a significance level of

Answers

Answer:

The calculated value Z = 2.3084 > 1.96 at 5% level of significance

Null hypothesis is rejected

Alternative hypothesis is accepted

The hotel does not expects that 24% of all guests will request smoking rooms

Step-by-step explanation:

Step(i):-

Given the hotel takes a random sample of 223 guests. Out of this sample, 39 guests requested smoking rooms.

Sample proportion

                          p = x/n = 39/223 = 0.174

Given Population proportion 'P' = 0.24

Given random sample size 'n' = 223

Level of significance ∝ =0.05

The critical value Z₀.₀₅ = 1.96

Null Hypothesis (H₀) : P=0.24

Alternative Hypothesis (H₁) : P≠ 0.24

Step(ii):-

Test statistic

            [tex]Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }[/tex]

           [tex]Z = \frac{0.174-0.24}{\sqrt{\frac{0.24 X 0.76}{223} } }[/tex]

           |Z| = | -2.3084|= 2.3084

The calculated value Z = 2.3084 > 1.96 at 5% level of significance

Null hypothesis is rejected

Alternative hypothesis is accepted

The hotel does not expects that 24% of all guests will request smoking rooms

Enuncia 5 vectores que pertenecen a un mismo sub espacio

Answers

Answer:

what?

Step-by-step explanation:


PLZ ANSWER IF U KNOW THE ANSWER




Sadie is making a recipe that needs 3 1/4 cups of sugar. each scoop Sandy adds contains 1/8 cup of sugar. how many scoops does she needs to add for the entire recipe?​

Answers

Answer:

D. 26

Step-by-step explanation:

3 1/4 as eighths is 26/8

Answer:

26

Step-by-step explanation:

Are these triangles congruent ?

And what is the theorem ?

I will give a brainlist for the correct answer :)

Answers

Answer:

Step-by-step explanation:

The two marked sides are congruent.

The angle that is marked is congruent to the other angle opposite it.

The line in the middle is equal to itself.

You have an angle between to equal sides.

The triangles are congruent by SAS

Best Answer gets BRAINLIEST!!!

Answers

Answer:

3.5/1  

Step-by-step explanation:

so 3.5

It would be 3.5/1 because going up you get 3.5 and going to the right you get 1 hope it helps:)

qustion to give kagimatoby a brainly

Answers

Answer:

wdym

Step-by-step explanation:

I need help with this please.

Answers

Answer:

CCCC.

Step-by-step explanation:

Pablo rented a truck for one day. There was a base fee of $17.95, and there was an additional charge of 82 cents for each
mile driven. Pablo had to pay $131.93 when he returned the truck. For how many miles did he drive the truck?
miles

Answers

ok so do 17.95x82 then with that answer divide it by 131.93

31.8 dived 0.58 answer

Answers

Answer:

54.8275862069

Step-by-step explanation:

If you want rounded than 54

The length of a rectangle is 3 centimeters less than five times its width. Its area is 14 square centimeters. Find the dimensions of the rectangle.
Find the Width and the Length
W=
L=​

Answers

Answer:

The length of rectangle is 7 cm and width is 2 cm.

Step-by-step explanation:

Given that:

Area of rectangle = 14 square centimeters

The length of a rectangle is 3 centimeters less than five times its width.

Let,

L be the length and W be the width of the rectangle.

L = 5W - 3

Area of rectangle = Length * Width

14 = (5W-3)*W

[tex]14=5W^2-3W\\5W^2-3W-14=0[/tex]

Factorizing the equation;

[tex]5W^2-10W+7W-14=0\\5W(W-2)+7(W-2)=0\\(5W+7)(W-2)=0[/tex]

Either,

5W+7 = 0

5W = -7

W = -7/5

Or,

W-2 = 0

W=2

As width of rectangle cannot be negative, therefore,

Width = 2 centimeters

Length = 5(2) -3 = 10-3 = 7

Hence,

The length of rectangle is 7 cm and width is 2 cm.

Express the area of the entire rectangle

Answers

Answer:

21x^4+56x^3+49x^2

Step-by-step explanation:

You need to multiply 7x^2 to each side (aka 7x^2*3x^2) and once you have each multiple you will add them all together. <3

Total Cost of Computer Repair = $1,444.50

Shipping = 2 percent of Total Cost

If Sarah wanted to include a 15 percent gratuity, based on the total cost of the computer repair, excluding shipping, how would you find her new total cost?

Answers

Answer:

Its D

Step-by-step explanation:

0.02 ($1,444.50)

Answer:

D

Step-by-step explanation:

1. Donnie makes flash cards for the vocabulary in the chapter on ocean currents. For Coriolis effect, he writes the following definition:the curving of the path of a moving object from a straight pathWhat important information did Donnie forget in his definition?A.due to windB.due to Earth’s rotationC.due to the sun’s energyD.due to continental deflection

Answers

Answer:

like ur pfp, free points ty

Step-by-step explanation:

. Naty bought a dress for $24.95 and a skirt for $14.95. The sales clerk said the total cost including 9.5% sales tax was 49.40. Below are the steps the clerk completed.

Step 1: 24.95 + 14.95 = 39.90 Step 2: 39.90 + 9.5 = 49.40

Are the clerk's steps correct? If she is incorrect, identify her mistake and explain her error. Explain in writing how to accurately calculate the sales tax, total cost, and state the correct total. ( Round final answer to the nearest hundredth)

Answers

Answer:

39.995=40.00

Step-by-step explanation:

    0.095 is tax he just added 9.5 he is not correct

Please answer i need help

Answers

m = 2/5 x b = 4 because u divided both by 5

2.3 times 4.7 how to do it show anwser

Answers

Answer:

10.81

Step-by-step explanation:

See the picture to help u

What is the equation of the line with a slope of 4 and a y-intercept of —2?

Answers

the straight line equation is y = mx + c

m = 4
y-int = -2

thus , the equation is y = 4x - 2

In a study investigating the effect of car speed on accident severity, the vehicle speed at impact was recorded for 5,000 fatal accidents. For these accidents, the mean speed was 46 mph and the standard deviation was 13 mph. A histogram revealed that the vehicle speed distribution was mound shaped and approximately symmetric. (Use the Empirical Rule.) (a) Approximately what percentage of vehicle speeds were between 33 and 59 mph

Answers

Answer:

68%

Step-by-step explanation:

Given that:

Mean speed (m) = 46

Standard deviation (s) = 13

Approximately what percentage of vehicle speeds were between 33 and 59 mph

Obtain the Zscore for P(Z < x) for both values and subtract :

For x = 33

Zscore :

Z = (x - m) / s

Z = (33 - 46) / 13 = - 1

p(Z < - 1) = 0.15866 ( Z probability calculator)

For x = 59

Zscore :

Z = (x - m) / s

Z = (59 - 46) / 13 = 1

p(Z < 1) = 0.84134 ( Z probability calculator)

Hence, 0.84134 - 0.15866 = 0.68268 = 0.68

0.68 * 100% = 68%

A and B are independent events.
PA) = 0.6
P(B) = 0.4
What is P(AB)?
O A. 0.24
B. 0.6
O c.0.4
D. Not enough information

Answers

Answer:

not enough information

Answer:

It's 0.6

Step-by-step explanation:

5(x+2)= 47

Explain why ?

Answers

ANSWER

X = 7.4

EXPLANATION: 5(7.4 + 2) = 47

Answer:

5xX=5x + 5x2=10

5x+10=47

5(7)+10

7=x

Step-by-step explanation:

I think this is the answer it might be wrong if it is I'm super sorry I hope this helps

An experiment has four groups and six observations in each group. What are the treatment degrees of freedom?a. 19b. 3c. 4d. 23e. 20

Answers

Answer:

3

Step-by-step explanation:

This experiment has four groups. Each of these groups have six observations

Total number of observations = 4 x 6 = 24

Treatment degrees of freedom can be gotten by using this formula

Df1 = K - 1

= 4-1

= 3

Therefore for this question, the treatment degrees of freedom is given as 3 and the correct answer option is b.

Answer:

Step-by-step explanation:

Hehe

____________________

Answers

9514 1404 393

Answer:

  x = 5

Step-by-step explanation:

We can subtract 3x, add 12, and divide by 4.

  7x -12 = 3x +8

  4x -12 = 8 . . . . . . . . subtract 3x

  4x = 20 . . . . . . . . . . add 12

  x = 5 . . . . . . . . . . . . divide by 4

I don't understand 1/2 +1/6 what the answer

Answers

Answer:

4/6

Step-by-step explanation:

1/2=3/6+1/6=4/6

Answer:

4/6. If you reduce it you get 2/3

Step-by-step explanation:

please help me solve

Answers

Answer:

CD

Step-by-step explanation:

Answer:

3rd one

Step-by-step explanation:

PLEASE HELP ME i’ll mark brainliest ! i added some extra points too

Answers

We want to find all the solutions to the equation [tex]f(x)=0[/tex]. Wich means that we want to find all values of [tex]x[/tex] such that [tex]y=0[/tex] (recall f(x)=y).

By looking at the graph, when does [tex]y=0[/tex]? That's right, exactly over the X axis!

The solutions to the equation are the X coordinates where the graph crosses the X axis.

They are -5,-2 and 4.

Solve the equation.
-5r-1=7r+5

Answers

Answer:

r=-1/2

Step-by-step explanation:

(-5*-1/2=2.5)( 2.5-1=1.5) (7x -1/2= -3.5)-3.5+5 =1.5

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