Please explain how to find 40 x 50 using mental math... xD

Answers

Answer 1

Answer:

Basically, what you do is multiply 4 times 5 ( this only applies when the numbers are in tens so like 10,20,30,40, etc.)

then after this you add the zeros of both numbers.

Step-by-step explanation:

so, this would be 2000


Related Questions

In the equation 3j = 75 + 9, what is the next step in the equation solving sequence?

Answers

Answer:

Combine 75 and 9

Step-by-step explanation:

3j = 75 + 9

Combine like terms

3j = 84

Answer:

3j = 75+9

3j = 84

j = 84/3

j = 28

The next step is to add, you are adding 75+9.

Anita collects shells and stones in a ratio of 1 : 2 If she has a total of 6 shells , how many stones does she have ?

Answers

If I'm not mistaken, the answer should be 12. For every one shell you have, you have two stones.

What are the slope, m, and y-intercept, b, of a line that passes through the points
(3,-1) and (7,-5)?

Answers

Answer:

Slope would be m= -1, y-int is 2.

Step-by-step explanation:

To find slope, use (y2-y1/x2-x1) Plugging this in, we get (-5-(-1)/(7-3). This can be simplified to -4/4, which is -1. After we find slope, we plug in one of the points to find be. Using (7,-5), y=-5 and x=7. So, -5=7(-1)+b. -5=-7+b. Add 7 to both sides, b=2. Therefore, the entire equation is y=-x+2.

Answer:

The answer is 1

Step-by-step explanation:

use slope formula!

[tex]m= \frac{y_{2}-y_{1}}{x_{2}-x_{1} }[/tex]

3 is xsub1

-1 is ysub1

7 is xsub2

-5 is ysub2

substitute and solve!

[tex]m= \frac{-5-(-1)}{7-3}\\= \frac{-5+1}{4}\\= \frac{-4}{4}\\= -1[/tex]

slope is 1

hope this helps!

Is 6,364 a reasonable product for 706×45

Answers

Answer:

I don't think so because I tried it and that's what I got

Step-by-step explanation:

Answer:

No, it is not. A reasonable product is 31,770.

Step-by-step explanation:

Ever heard of a calculator? It's way faster.

45 x 100 = 4,500

4,500 x 7 = 31,500

45 x 6 = 270

31,500 + 270 = 31,770

Is this function? Please help

Answers

Answer:

Its a funcion if "x" doesnt repeat

Step-by-step explanation:

Express 19.07 as a mixed number.

Answers

19 7/100. Basically you will have 19 as the whole number, then you will put the 7 over the 100 (7/100). The reason why it’s 7/100 because the .07 is in the hundredth place. Thus making the problem 19 7/100

Someone help please

Answers

Answer:

1.0

Step-by-step explanation:

you have to follow the arrow

Write the equation of the line in slope-intercept form.

Answers

Answer:

y = -½x + 3

Step-by-step explanation:

The equation of a line in slope-intercept form is

y = mx + c

where m is the gradient (slope) and c is the y-intercept

We can find the gradient and intercept from the two points on the diagram

The points are:

(0, 3) and (4, 1)

The y-intercept is when x = 0

we are already given this point so

c = 3

now we can use our other point to find m. So:

1 = 4m + 3

-2 = 4m

-½ = m

Now we can put both variables into our slope-intercept form

y = -½x + 3

Given f(x) = {(4 - x), what is the value of f(16)?​

Answers

Answer:

f(16)= 4-16

f(16)= -12

The sum of 5 and twice a number.

Answers

Answer:

5+x2

Step-by-step explanation:

Answer:

5 + 2x

Step-by-step explanation:

Sum means your adding so it would be 5 + any given number which you can call x times by 2. Which is 5 + 2x

HELP PLZZZZ
THANK YOU SO MUCH FOR HELPING ME!!!!

Answers

f(1/2 pi) = 2
I don't entirely remember how to do the second one so hang on
f(x) = 0 when x = k (pi) ?
Range: [-2,2]
f(pi/2)=2
X=-2pi,-pi,0,pi,2pi
Range=-2,0,2

A theater charges $45 for each general admission ticket and $25 for each same-day ticket. If Dan spent $485 on 13 tickets, how much money did he spend on same-day
tickets?
$225
$200
$125
O $75

Answers

Answer:

Step-by-step explanation:

45g + 25s = 485

g + s = 13

 45g + 25s = 485

-25g - 25s = -325

20g = 160

g = 8

8 + s = 13

s = 5

25(5)= $125 on same-day tickets

The points ​(​12,14​) and ​(42,​49​) form a proportional relationship. Find the slope of the line through the points. Then use the slope to graph the line.

Answers

Answer: 5/2

Step-by-step explanation:

49 - 42/ 14 - 12

The ratio of boys to girls at a movie is 4:7. If there are 21 girls, how many boys are at the movie?

Answers

Answer:

12

Step-by-step explanation:

Solid shape is made 4 cubes. What is the front elevation ​

Answers

The easiest method to draw elevations to the same scale as your floor plans to make the process a bit easier.Tape your main floor plan drawing to the surface of your work table with the front side house facing towards you

The front elevation of the cube will be either a square or a rectangle.

What is a cube?

A three-dimensional object with six congruent square faces is called a cube. The cube's six square faces all have the same dimensions.

Given that, a solid shape is made from 4 cubes.

The front face of a cube is square, therefore, the front elevation of 4 cubes will be either a square or a rectangle.

Hence, the front elevation of the cube will be either a square or a rectangle.

Learn more about cubes:

https://brainly.com/question/29372770

#SPJ2

Solve and show your work.
What is 3/4 of 1/2?

Answers

3/4 of 1/2

⚠️REMEMBER IN MATH THE WORD *OF* STANDS FOR MULTIPLICATION⚠️

so 3/4 x 1/2

when multiplying two fractions, we multiply the numerators together and the denominators together

(3 x 1) / (1 x 2)

that is

3/8

so 3/4 of 1/2 is 3/8

Hope this helps :)

[tex]\frac{3}{4} *\frac{1}{2}[/tex]

find surface area please

Answers

Answer:

The area is 54.6

Step-by-step explanation:

Hopefully this helps!

multiply. express your anwser in simplist form.. 1 7\8 × 2 1\3​

Answers

Answer:

If not simplified 35/8 if simplified 4 and 3/8.

Have a fantastic day :)

Its Either 35/8 Or 4/8

2) Use a graph to find the length of DE if D(4, -3) and E(-5, -7).​

Answers

Answer:

The answer rounded to the nearest tenth is 9.8.

Step-by-step explanation:

The answer itself is really long so I rounded to the tenths place.

Perform the following calculation and round your answer appropriately to the correct number of significant figures: 10. x 0.007809

Answers

Answer:

0.07809

Step-by-step explanation:

all do is multiply it and you will get your anwer.

QUICK WHATS 1 + 1 WRONG ANSWERS ONLYY

Answers

Answer:

5

Step-by-step explanation:

Because Math is Math smh

Answer:

Glizzy

Step-by-step explanation:

it tastes good

The two triangles shown are similar. Find the value of
a
b
2.1
1.4

Answers

Answer:a 2.1 similar to 1.4 is 5.6  n answer to your question

Step-by-step explanation:

Answer:

1.5

Step-by-step explanation:

x and y intercepts for -4x+2y=6​

Answers

Answer:

y-intercept = 3

x- intercept = -1.5

Step-by-step explanation:

-4x + 2y = 6

+4x          + 4x

2y = 4x + 6

2          2

y = 2x + 3

Graph then you would get the coordinates of (0, 3) and (-1.5, 0)

Answer:

x intercept: (-3/2,0)

y intercept:(0,3)

Step-by-step explanation:

Similarities between capitalism and Socialism

Answers

Answer:

there social system

Step-by-step explanation:

An online music store is offering a promotion. When you spend $30 or more, you receive 3 songs for free. You buy an album for $10. Identify an inequality that represents how much more money $m$ you must spend to receive the three free songs.

Answers

Answer:

10 + m  ≥ 30

You must spend AT MOST $20 or more

Step-by-step explanation:

Basically you have already spent 10 dollars and you have to pay MORE than or equal to 30. You cannot pay less than because you want the free songs. So the sign has to be  ≥ or the inequality will not be true.

10 + m  ≥ 30

10 - 10 + m  ≥ 30 - 10     ( subtract 10 from each side to isolate m)

m  ≥ 20     ( we are left with this )

The answer is :

m  ≥ 20

You must spend at most 20 dollars more to get the 3 free cd's. Your welcome :D

4x-5≥7 in interval notation

Answers

Answer:

4x - 5 > 7 = [3,∞)

Step-by-step explanation:

Move all terms not containing x to the right side of the inequality.

4x > 12

Divide each term by 4 and simplify.

x > 3

Convert the inequality to interval notation.

[3,∞)

I hope this helps

if you could, feel free to mark me Brainliest it would be much appreciated :D

HELP PLEASE I am in elementary school don’t make fun of me but this is my Q: 274/385 + 583/648

Answers

Answer:

402007/249480

Step-by-step explanation:

or decimal form: 1.61137966

A vending machine operator has determined that the number of candy bars sold per week by a certain machine is a random variable with mean 109 and standard deviation 11. His profit on each bar sold is $0.12, and it costs him $10 per week to maintain the machine and rent the space for it. What are the mean and standard deviation for Y= the profit he earns from this machine in a randomly selected week?​

Answers

Answer:

10

Step-by-step explanation:

Using the approximation 3.14 for (pie symbol ​, what is the radius of a circle with a circumference of 59.7

​m?

Answers

Here is my answer for your question

4log, 11 – 20log 35

Answers

Answer:

  -26.71579

Step-by-step explanation:

Any scientific or graphing calculator can evaluate this expression for you.

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