Mr. Donald's age is 7 times of 1/5 of the total of students in this class plus 12 minus 1. Assuming this class has 25 students in total. What is Mr Donald age?​

Answers

Answer 1

Answer:

46

Step-by-step explanation:

7×1/5×25+12-1

7×5+12-1

35+12-1

47-1

46

So the answer is 46


Related Questions

How many yards long is a piece of fabric witha width of 5/8 yrd nd a area of 2 3/4 square yards?

Answers

Answer:

D. [tex] 4\frac{2}{5} [/tex]

Step-by-step explanation:

Area of fabrics = 2¾ square yards

Width of fabrics = ⅝ yard

Length of fabrics = x

Area = length * width

Therefore:

2¾ = ⅝*x

Change the mixed fraction to improper fraction

[tex] \frac{11}{4} = \frac{5x}{8} [/tex]

Cross multiply

[tex] 4*5x = 11*8 [/tex]

[tex] 20x = 88 [/tex]

Divide both sides by 20

[tex] \frac{20x}{20} = \frac{88}{20} [/tex]

[tex] x = \frac{22}{5} [/tex]

[tex] x = 4\frac{2}{5} [/tex]

[tex] length = 4\frac{2}{5} [/tex]

6

A girl has $2.85 in nickels and quarters. How many of each type of coin does she have if there

are 21 coins in all? *

(4 Points)

n + 9 = 21 and .05n + .25q = 2.85

n = 12,9 = 9

n = 5,9 = 26

n = 31, 9 = 22

n = 5,9 = 7

Answers

Answer:

n = 12, q = 9

Step-by-step explanation:

The simultaneous equation that represents the expression is;

n + q = 21 .......... 1

0.05n + 0.25q = 2.85 ........ 2

Multiply equation 2 by 100 to have;

5n + 25q = 285

n + 5q = 57

____________________________________

n + 5q = 57

n + q = 21

Substract the resulting equations

5q-q = 57-21

4q = 36

q = 36/4

q = 9

Substitute q = 9 into eqn 1;

From 1; n+q = 21

n = 21-q

n = 21-9

n = 12

Hence she has 12 nickels and 9 quarters

Calculate the volume

Please show the steps....

Answers

Answer:

4,800

Step-by-step explanation: 6 times 5 times 8 times 20=4800 :D

Answer:

probably

Step-by-step explanation:

v = [20.(8+6)/2].5

v = 20.7.5

v = 700cm³ (that's a 3 btw)

Triangle ABC IS an isosceles triangle AB=BC m

Answers

Answer:

The measure of angle A is 73°

Step-by-step explanation:

Isosceles Triangles

An isosceles triangle is a triangle with exactly two congruent sides. The angles the congruent sides form with the third side are also equal.

The triangle ABC is isosceles and AB congruent with BC. The angle at B measures 34°.

The other two angles are congruent, i.e. their measures are the same. Since the internal angles of a triangle sum 180°:

[tex]2*m\angle A=180^\circ - 34^\circ =146^\circ[/tex]

Thus:

[tex]m\angle A=146^\circ /2=73^\circ[/tex]

The measure of angle A is 73°

What is the equation of the line that passes through the point (-3. 4) and has a
slope of 1/3?

Answers

Y= mx+c
So m= the gradient (slope)
And c=the y intercept (x,y= -3,4)
So it should be
Y=1/3x+4

Estimate the squrae root to rhe nearest hundredth.
1. 138
2. 405
3. 800
4. 1150
5. 6500
6. 580
7. 300
8. 250
9. 284
10. 794
Salamt....

Answers

Answer:

1.11.83

2. 20.12

3. 28.28

4. 33.91

5.80.62

6.24.08

7.17.32

8. 15.81

9. 16.85

10. 28.18

Step-by-step explanation:

pls make me brainliest

In a group of 343 children, 104 have a swing set, 126 have a trampoline and 42 have a swing set and trampoline. How many have a swing set only?a. 20b. 72c. 62d. 54e. 52f. none of above

Answers

Answer:

None of the above

Determine the ending balance in the account if you deposit $720 at 6% for 5 days

Answers

Answer:

Step-by-step explanation:

S.I =720×6×5/100×365

=21600/36500

=0.59178

So balance will be 720+0.59178

=720.59178

4 divided by 9.48 hii

Answers

0.4219 Approximately .

Also HIIII

Answer:

4 divided by 9.48= 0.42( or 0.421940928.....)

Step-by-step explanation:

..

In a population that is normally distributed that has a mean of 45 with a standard
deviation of 5, what is the probability that a randomly selected object is over 52?
0.0001
0.0808
0.0501
0.9542

Answers

I think I would be 5

50 POINTS GIVEAWAY!!!!!

I am finally rank ambitious so I am making 50 points giveaway!

To win them you just need to solve this:
[tex] 9 - 3\div \frac{1}{3} + 1 [/tex]
If your answer is right you will get a brainliest!

GOOD LUCK!!!​​

Answers

Answer:

1

Step-by-step explanation:

9 - 3/(1/3) + 1 = 1

Thank you so for hosting this giveaway! The answer is 1 :3

Solve 8,961 ÷ 29 Using standard algorithm.

(Giving brainliest and extra points)

Answers

Answer:its 309

Step-by-step explanation:

Rewrite 38/7 as a mixed number.

I need this ASAP

Answers

Answer:

5 3/7

Step-by-step explanation:

Answer:

[tex]5\frac{3}{7}[/tex]

Step-by-step explanation:

Seven goes into 38 five times. Giving you 5 from 5×7=35.

I hope this explantion was helpful.

Can anyone help with this?

Answers

Answer:

The answer is B and D.

Step-by-step explanation:

I hope this helped and if it did I would appreciate it if you marked me brainliest. Thank you and have a nice day!

is 8+y=4x a linear equations

Answers

Answer:

Yes

Step-by-step explanation:

8 + y = 4x is a linear equation in two variables ( x and y) .

yes it is a linear equation

A. 0.75s+0.4t=980

B. 0.75s-0.4t=980

C. 0.75s+0.04t=980

D. 0.75s-0.04t=980

Answers

c is the correct answer

Brian has 17 fewer marbles
than Kyle. Brian has
21 marbles. How many
marbles does Kyle have?

Answers

Answer:

the answer to your question is 38.

There are 38 marbles does Kyle have.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

Brian has 17 fewer marbles than Kyle.

And,  Brian has 21 marbles.

Now,

Let number of marbles Kyle have = x

Then, Number of marbles Brian have = x - 17

But, Brian has 21 marbles.

So, We get;

x - 17 = 21

x = 21 + 17

x = 38

Thus, There are 38 marbles does Kyle have.

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ2

It takes a groundskeeper 35 minutes to prepare a Little League baseball field for a game. It takes his assistant 45 minutes to prepare the same field. How long will it take if they work together to prepare the field?

Answers

a) It takes a groundskeeper 45 minutes to prepare a softball field for a game. It takes his assistant 50 minutes to prepare the same field. How long will it take if they work together to prepare the field?

G does 1/45 job per minute

A does 1/50 job per minute

Together, they do 1/45 + 1/50 = 19/450 jobs/minute

--> 450/19 minutes to do the job

You can use a shortcut, product/sum

50*45/(50+45) = 2250/95

= 450/19

--------------------------------

b) It takes the owner/operator of a dog kennel 7 hours to clean all of the cages. It takes his assistant 4 hour(s) more than that to clean the same cages. How long will it take if they work together?

This is 7 and 11 hours.

7*11/(7+11) = 77/18 hours

= ~ 4.28 hours

For her birthday, Kendra received a gift card in the mail from her grandparents. The gift card was worth $50. Kendra thought, since she had just received other gifts for her birthday, she would wait a while to spend the gift card. Unfortunately, Kendra forgot all about the gift card, and the card loses $5 every month after its date of purchase if it has not been used. If Kendra forgot the card for three months, she lost $______.

A. 9
B. 10
C. 15
D. 12

i will give you brainiest and it has to be the right answer.

Answers

Answer:

$15

Step-by-step explanation:

Answer:15

Step-by-step explanation:

ME NEEDS SOME HELP WITH MATH PLS

Answers

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[tex]The \: \: correct \: \: answer \: \: is \: \: (( C )) . \\ [/tex]

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C. |-3| < |9| and -3 < 9

Is it a nonlinear or a linear

Answers

Answer: linear



Step-by-step explanation:

-Hope this helps :D

Luke measured caterpillars for a science project. He believes that caterpillar A is longer than caterpillar B because it has more digits after the decimal point. Do you agree or disagree Luke's thinking. Explain your reasoning.

Caterpillar A=4.125 cm
Caterpillar B=4.03
Caterpillar C=4.23

Answers

Answer: disagree

Step-by-step explanation:

Caterpillar A is longer, but not because of the decimal places. It is longer because of the place value.

Answer:

Disagreed

Step-by-step explanation:

In order to find the answer to this question you must remember that when dealing with finding the greater decimals you have to look at which have the greater place values in this case...

[tex]CA=4.125[/tex]

[tex]CB=4.03[/tex]

[tex]CC = 4.23[/tex]

Caterpillars 1 place value is already greater then caterpillar B's place value of 0, so it doesn't really matter how many more numbers to add after 1 and 0 because these two place values are already different 1 > 0

Meaning that "although Caterpillar A is greater then Caterpillar B, it is not because it has more digits simply because one is greater then zero." You can prove this by seeing that Caterpillar C is greater then Caterpillar A because two is greater then one.

[tex]4.125 > 4.03[/tex]

[tex]4.125 < 4.23[/tex]

Hope this helps.

Expand & simplify
(2x + 3)(x + 2)

Answers

            (っ◔◡◔)っ ♥ Hey Honey Here!♥Answer♥

2ײ+ 7× + 6

plz give me brain list it would help a lot!

                        ♥  お力になれて、嬉しいです

The weekly milk order for the Tranquility Hotel includes 40 gallons of low- fat milk and 15 gallons of chocolate milk. What is the ratio of chocolate gallons to low- fat gallons in Tranquility Hotel's weekly milk order?​

Answers

Answer:

15:40

Hope it helps!

(04.04 LC)
On a coordinate grid, point T is at (2,-4) and point Sis at (2,6). The distance (in units) between points T and Sis
numbers, such as 2.) (5 points)
(Input only whole

Answers

Answer:

The distance 'd' between T and S:

[tex]d=10[/tex]

Step-by-step explanation:

As the point 'T' is located at (2, -4)

So, the point 'T' has the coordinates (2, -4)

And the point 'S' is located at (2, 6)

So, the point 'T' has the coordinates (2, 6)

The distance 'd' between T and S can be computed using the formula:

[tex]d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}[/tex]

[tex]=\sqrt{\left(2-2\right)^2+\left(6-\left(-4\right)\right)^2}[/tex]

[tex]=\sqrt{\left(2-2\right)^2+\left(6+4\right)^2}[/tex]

[tex]=\sqrt{0+10^2}[/tex]

[tex]=\sqrt{10^2}[/tex]

[tex]d=10[/tex]

Therefore, the distance 'd' between T and S:

[tex]d=10[/tex]

Answer:

t and s

Step-by-step explanation:

pls help me with long division

Answers

86÷3 =

*The divisor is 3 and the dividend is 86

First step: How many 3's can fit into 8? (8÷3)

8÷3 = 2 r 2

Second step: add a 2 above the eight in the tens place of the answer.

86÷3 = 2_

Third step: multiply 3 x 2; 3 x 2 = 6;

In this step, we put a 6 underneath the 8.

Fourth step: Subtract.

In this step, we subtract 8-6 (=2)

Fifth step: bring down the next number. In this case, it is 6.

In this step, we now have the number 26.

Sixth step: How many 3's can fit into 26? (26÷3)

26÷3 = 8 r 2

Last step: Now put an 8 in the one's place and now we have a remaining 2. That is called the remainder. We put the remainder and represent it as "r". We put r2.

I hope this was easy for you to understand!

Answer:

Step-by-step explanation:

  2  8 R2

3[tex]\sqrt{86[/tex]

-  6  

-------------

    26

-    24

-----------

     0  2

(08.01)Two lines, A and B, are represented by the following equations:

Line A: 2x + 2y = 8
Line B: x + y = 3

Which statement is true about the solution to the set of equations?

It is (1, 2).
There are infinitely many solutions.
It is (2, 2).
There is no solution.

Answers

Answer:

It is D, ( the numbers to the right of the equals sign are different.)

Step-by-step explanation:

Can x-2 be simplified more? Why?

Answers

Answer:

No:

Step-by-step explanation:

No, there is no way to further simplify this equation, unless there is a value for x.

Answer:

No. x-2 can't.

Step-by-step explanation:

Its the same reason why you can't simplify 1+1. You could add them together, but in a case like this, where one number is unknown you can't. The number is already to its simplifiest form.

im having a mental breakdown HELPPPP!​

Answers

LN is congruent to NQ so because of that you set both equal to each other

7x=5x+20

Subtract 5x on both sides

7x-5x=20

2x=20

x=10

Hope this helps!! Mark for brainliest

Which of these figures shows perpendicular lines?

Answers

Answer: I think a and b

Step-by-step explanation:

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