1. Use the mental math strategy of rounding (for example +1/-1, +2/- 2, +10/-10, or +20/-20) to add the following numbers. Write down how you would change the numbers in your head for each question.
Ex. 27 + 51 28+50=78
a. 41 + 16=
b. 79 + 14=
c 580 + 355=
d. 174 + 620=
e. 378 + 210=

Answers

Answer 1
a. 41 + 16=57 40+17= 57
b. 79 + 14=93 80+13= 93
c. 580+355=935 600+335=935
d. 174+620=794 194+600=794
e. 378+210=588 388+200=588


Here you go, hope this helps! :)

Related Questions

What value of x will make the equation below true?
4.5x=18

Answers

4.5x=18

Divide both sides by 4.5 to isolate x.

x=4

Smart people I need you i'll give brainlist to person who answers

Answers

Answer:

Do you think it's 60 feet^2

Step-by-step explanation:

Was it correct??

Find the area of the figure. (Sides meet at right angles.)

Answers

Answer: 37ft^2

Step-by-step explanation:

Create two separate figures. A full square 3x3 and a rectangle 7x4.

The 7ft line on the right minus 3 ft (because we are cutting out that section of the figure) = 4ft

Area of 3x3 square = 3^2 = 9ft^2

Area of 7x4 rectangle = 7x4 = 28ft^2

28+9= 37ft^2

At a high school there was a survey to find out how many people used different forms of transportation. The study found that 1/4 of the students were taken by car to school, 42% took the bus and the rest walked or took public transportation. There was a total of 600 students. How many students took the bus?

225
252
351
157
which one ^

Answers

Answer:

252

Step-by-step explanation:

600X42%=252

42/100 x 600 (42% of 600)
= 252
ans: 252

Please help ASAP rocky!!!

Answers

Hello! To find area you multiply LxW, in this case it would be 22 times 10, that would give you 220, hope this helps

Answer:

The answer is 44

Step-by-step explanation:

Be
1. (7.5A) Triangle ADE is similar to triangle ABG.
Which of the following statements must be true?
A. The measure of angle AGB is greater than the measure of angle ADE.
B. The measure of angle AGB is greater than the measure of angle AED.
C. Segment AE and Segment AB have the same length.
D. The ratio of AG to AE is the same as the ratio of AB to AD.

Answers

Answer:

D

Step-by-step explanation:

....iam not sure but i think its a because the other impossible

Answer:

The answer is D.

Step-by-step explanation:

For A- I don't think it's greater, I think they are the same.

For B- I don't think it's greater, I think they are the same.

For C- Segment AE is longer than Segment AB.

So D seems like the more logical answer.

A restaurant is making table cloths for their four round tables. Each table is a circle with a radius of 2 ft. Each table cloth needs to be 20% larger than the table surface.


How many whole table cloths can the restaurant get out of a piece of fabric with an area of 64 ft²?
Please help!!

Answers

Answer:

4

Step-by-step explanation:

Since it gives us the amount of area of material to use we know we want to find how many times we can divide it into tablecloths.  So now we need to find how much each tablecloth is.

so first it tells us that each table has a radius of 2 ft, so we find the area using that.  area of a circle is [tex]\pi r^2[/tex] so plugging in 2 ft we get 4π square feet or 12.56.

It also says that each tablecloth needs to be 20% bigger, so we find what 20% larger than 4π is.  to do this you do 4pi*1.2 = 4.8π = 15.072 square feet.

Now, how many tablecloths with areas of 15.072 square feet can be made from 64 square feet.  Hopefully it's obvious you divide.  so 64/15.072 = 4.25

Since we want whole tablecloths and that .25 is a remainder, 4 whole tablecloths can be made.

Rewrite the following using distributive property

1. 24+20
2. 12+16
3. 36+81
4. 49+84
5. 99+36​

Thanks❤

Answers

Answer:

12+16

24+20

36+81

49+84

99+36

Kaja completed construction of her rases flowerbed project and is ready to begin fing with sol. The rased flower bed is in the stage of a rectanguliza prism and has dimensions as shown belon Each bag of sol cortans 15 cubic feet of soil. How many fudbags of so wil Kaja need to buy to fi her Sower bed?
A)16
B)21
C)27
D)32​

Answers

Answer: She would need 32

Step-by-step explanation:

help me please, i’m stuck.
(.10)(9.8m/s^2)(2)

Answers

Answer:

1.96 meters / second2

Step-by-step explanation:

The x coordinate of the vertical intercept is always zero. For example, a line that crosses they axis at -6 has a vertical intercept of (0 - 6) true or false

Answers

Answer:

true

Step-by-step explanation:

go math book 5th grade lesson 10.6

Answers

Answer:lol

Step-by-step explanation:

What is the measure of < c in quadrilateral ABCD?

Answers

Answer:

the sum of interior angles of a quadrilateral = 360 degree

Step-by-step explanation:

therefore,

let the angle C be X

124 + 96 + 94 + X = 360

314 + X = 360°

X = 360 - 314 = 46°

angle C = 46°

Answer:

46 degrees

Step-by-step explanation:

I need this to be done in 5 minutes

Answers

Answer: 6 is C and 7 is a

Step-by-step explanation:

Answer:

6) b. 75

7) d. 62

Step-by-step explanation:

the sides of the box are the quartiles, and the dots at the end are the range of the data. the line in the middle of the box is the center of the data.

What is the length of the hypotenuse?​

Answers

Answer:

The answer is c = 17 feet

Step-by-step explanation:

The formula to find the hypotenuse is a^2 + b^2 = c^2 (a squared plus b squared equals c squared).  

a = 8 feet

b = 15 feet

a^2 = 8 * 8 = 64

b^2 = 15 * 15 = 225

The next step is to add: 64 + 225 = 289

But we need to remember to square root 289 because we squared a and b.

The square root of 289 equals 17

c = 17 feet

Determine whether the set of data shown below display exponential behavior. Write yes or no explain why or why not?

Answers

Answer:

I don't know what is your name is your

The width if a rectangle is 4ft and the length is unkown. If the area is the expression 12x + 24 what is the unkown length?

Answers

Answer:

Length=6 ft

Step-by-step explanation:

Name the property illustrated.

(4 + 6) + 9 = 4 + (6 + 9)

Answers

Commutative property.
Mark brainliest

URGENT !!!!!!!!! Please answer correctly !!!!! Will be marking Brianliest !!!!!!!!!!!!!!!!

Answers

Answer:

72 Sq m

Step-by-step explanation:

Area of trapezoid

[tex] = \frac{1}{2} (16.5 + 7.5) 6 \\ \\ = 24 \times 3 \\ \\ = 72 \: {m}^{2} [/tex]

Answer:

area of isosceles trapezoid = 72 m square

The area of a rectangle is 14 square units. It has side lengths a and b. Given the following value for a, find b. a = 2 & 1/3

Answers

Given:

The area of a rectangle = 14 square units.

The side lengths are a and b.

[tex]a=2\dfrac{1}{3}[/tex]

To find:

The value of b.

Solution:

We know that, the area of a rectangle is:

[tex]Area=Length\times Width[/tex]

The area of the given rectangle is:

[tex]14=a\times b[/tex]

[tex]14=2\dfrac{1}{3}\times b[/tex]

[tex]14=\dfrac{2(3)+1}{3}b[/tex]

[tex]14=\dfrac{6+1}{3}b[/tex]

On further simplification, we get

[tex]14=\dfrac{7}{3}b[/tex]

[tex]14\times 3=7b[/tex]

[tex]42=7b[/tex]

Divide both sides by 7.

[tex]\dfrac{42}{7}=b[/tex]

[tex]6=b[/tex]

Therefore, the value of b is 6 units.

a
The expression ax²+bx+c is divisible by x-1, has a
remainder of 2 when divided by x+1 and has a remainder of 8 and when divided by x-2 find the values of a, b, and c and
factorise completely.​

Answers

Answer:

(x - 1)(3x + 2)

Step-by-step explanation:

By the Remainder theorem

Given expression is divisible by x - 1 then f(1) = 0

when divided by (x + 1) then f(- 1) = 2

when divided by x - 2 then f(2) = 8

Substitute x = 1, x = - 1, x = 2 into the expression , that is

a + b + c = 0 → (1)

a - b + c = 2 → (2)

4a + 2b + c = 8 → (3)

Subtract (1) from (2) to eliminate a and c

- 2b = 2 ( divide both sides by - 2 )

b = - 1

Subtract (1) from (3) to eliminate c

3a + b = 8 ← substitute b = - 1

3a - 1 = 8 ( add 1 to both sides )

3a = 9 ( divide both sides by 3 )

a = 3

Substitute a = 3, b = - 1 into (1) and evaluate for c

3 - 1 + c = 0

2 + c = 0 ( subtract 2 from both sides )

c = - 2

Then a = 3, b = - 1, c = - 2

Thus

ax² + bx + c

= 3x² - x - 2

= (x - 1)(3x + 2) ← in factored form

i really need help with this!!! someone help please

Answers

Answer:

156 in squared

Step-by-step explanation:

So the formulas will be stated below

Parallelogram Area= 1/2h(b1+b2)

Square Area= Bh

So first do

(4)(12+6)

(4)(18)

No need to half it bc there's the same shape at the bottom

72+18+30+36

6(3)

3x5(2)

12(3)

1) 12. 1 7 round to the nearest whole number​

Answers

Answer:

12

Step-by-step explanation:

12.3 would be rounded uo but since it's a whole number it would be 12.

Give the answer in simplest form:
3/8 of 48 = n n = _____

Answers

Answer: n= 18

Step-by-step explanation: 3/8 of 48 is the same as 3/8 times 48

Answer:

18

Step-by-step explanation:

48 divided into 8 parts is 6

3x6=18

help plssssssssssssssss
one question

Answers

A. Hope this helped

please help!! I suck at this :(

Answers

Answer:

41/50

Step-by-step explanation:

82% = 0.82 = 82/100

82/100 reduced is 41/50

Write an equivalent expression to 3+2(5x)-7

Answers

Answer:

-2(2-5x)

Step-by-step explanation:

3+2×(5x)-7

Calculate the difference

-4+2×(5x)

Factor out -2 from the expression

-2(2-5x)

Thats the answer: -2(2-5x)

Hope this helps

Given AB= 20, BV=12, VA=14 and SR is a mid segment, find the given lengths

Answers

Given:

AB= 20, BV=12, VA=14 and SR is a mid segment.

To find:

The lengths of SR and AR.

Solution:

SR is a mid segment. So, SR is parallel to the non-included side BV and the length of SR is half of BV.

[tex]SR=\dfrac{1}{2}BV[/tex]

[tex]SR=\dfrac{1}{2}(12)[/tex]

[tex]SR=6[/tex]

SR is a mid segment. So, it divides the included sides in two equal parts. It means R is the midpoint of VA.

[tex]AR=\dfrac{1}{2}VA[/tex]

[tex]AR=\dfrac{1}{2}(14)[/tex]

[tex]AR=7[/tex]

Therefore, the measure of SR is 6 units and the measure of AR is 7 units.

please help me with this i’ll give you 15 points

Answers

Answer:

yes he is right

Step-by-step explanation:

Answer:

Yes he is!

Step-by-step explanation:

If you need the probability of both answers, convert 4/10 ( or 0.4 ) to 40/100 and 0.25 stays 25/100 and if you add 25 + 40 you get 65 so 0.65 or 65/100 is the probability both boys will score!

Hope this Helps! :D


y = 2x - 6
y = - 4x + 3

Answers

Answer: x = 3/2, y = -3
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