Use mental mAth to solve 122+306

Answers

Answer 1

Answer: 122
+ 306
-------------
428

Answer 2

Answer: Mental math is using your brain so you would separate the problem into pieces to make it easier, for example first you would do 100 + 300 = 400 them add (22+6) which is 28 so 400 plus 28 is 428

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in a department store, a $40 dress is marked, "save 25%." what is the discount? what is the sale price of the dress?
At the grocery store, Tina counts eight cartons with 6 eggs each, forty cartons with 12 eggs each, and twenty cartons with 18 eggs each. Which expression represents the problem?(8 x 6) + (40 x 12) + (20 x 18)(8 + 6) x (40 + 12) x (20 + 18)(68 + 6) x (68 + 12) x (68 + 18)(68 x 6) + (68 x 12) + (68 x 18)

The circumference of a circular stage is 157 feet. If Chris paints the stage at a rate of 400 square feet per hour, how long would it take to the nearest hour, for Chris to paint the entire stage?

Answers

We need the circumference and area of the circle equations:
c = 2*pi*r
a = pi*r^2
lets find the radius from the first equation:
r = c/2*pi
r = 157/(2*3.14)
r = 24.99 ft
now lets calculate the area:
a = pi*r^2
a = 3.14*(24.99)^2
a = 1960.93 ft^2
Now we need to divide the total area by the rate at which Chris paints, and that gives us the time needed:
time = 1960.93/400
time = 4.9 hours
that would be 5 hours rounded to the nearest hour

Glenda began the day with a golf score of -6 and ended with a score of -10. Which statement represents her golf score for that day?

Answers

it is 4 because -6 [-10]=4 hope this helps you; )

joe correctly answered 70% of the questions on a test. there were 50 questions. how many questions did joe answer correctly?

Answers

your answer is 35 because you do 35 divided by 50 which equals 0.7 starting from the decimal, move two spaces to the right and you will get 70%

.70 *50 =35 .......

16. The temperature on the ground during a plane's takeoff was -7°F. At 38,000 feet in the air, the temperatureoutside the plane was -29°F. Find the difference between these two temperatures.a. 36 FC. -22°Fb. 36°Fd. 22 F

Answers

The difference between given two temperatures will be $-22^0 F$ .

What is temperature ?

Temperature is the measure of hotness or coldness of something which is expressed in terms of several scales, including Fahrenheit and Celsius.

We have,

Temperature on the ground $=-7^0F$

Temperature in the air $=-29^0F$

So, the difference between temperatures $=$ Temperature in the air $-$ Temperature on the ground

The difference between temperatures $= -29-(-7)$

$=-29+7$

$=-22^0F$

Hence, we can say that the difference between given two temperatures will be $-22^0 F$ .

To know more about temperatures click here

brainly.com/question/11464844

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The answer is -22°F because you are subtracing -7°F from -29°F.

An equation and the steps to solve it are shown below:2x − one over four (12x + 4) = 3

Step 1: 2x + 3x + 1 = 3
Step 2: 5x + 1 = 3
Step 3: 5x + 1 − 1 = 3 − 1
Step 4: 5x = 2

In which step was the error made and why?

Step 1, because incorrect signs have been used
Step 2, because the terms have been added incorrectly
Step 3, because a number has been subtracted from both sides of the equation
No error was made

Answers

step 1,
what i am thinking you're saying is 2x-1/4(12x+4)
so you would distribute the -1/4 to the 12x and the 4.
therefore making it a negative, not a positive.
so, i think step 1 is wrong.

Answer:

step 1

Step-by-step explanation:

What is 70/6 times 18/4 in simplest form

Answers

70/6 × 18/4

70 * 18/6*4. cross out 18 and 6.

= 70*3/4

= 35 * 2 * 3/ 2*2

= 35*3/2

= 105/2

= 52.5

OR

52 1/2.

70/6*18/4 = 105/2=52.5 52.5= $\boxed{32 (1)/(2)} \n$

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