Estimate by rounding to the nearest integer. -9.916 + 12.4 = 9 + 12 = 21 True False

QUESTION POSTED AT 20/02/2020 - 11:21 PM

Answered by admin AT 20/02/2020 - 11:21 PM

If you estimate it the equation is -10+12=9+12=21 or 2=21=21 so the answer is false
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Related questions

The radius of the sphere is 10 units.What is the approximate volume of the sphere? Use π = 3.14 and round to the nearest whole cubic unit. cubic units

Answer:

V = 4187 cubic units.

Step-by-step explanation:

Volume of a sphere = 4/3*π*r^3

Given: r = 10, π = 3.14

Volume of the sphere = 4/3*3.14*10^3

= 4/3*3.14*1000

= 4/3*3140

= 12560/3

V = 4186.66

When we round to the nearest whole number, we get V = 4187 cubic units.

Hope this will helpful.

Thank you.

ANSWERED AT 31/03/2020 - 10:47 AM


QUESTION POSTED AT 31/03/2020 - 10:47 AM

Libby wants to measure the length of a pond. She measured 13 yd from point X to point Z and 12 yd from point Y to point Z. What is the length of the pond?

Answer:The answer is 5yds mate  i did it on USAtestprep

Step-by-step explanation:

would u please mark me brainliest answer mates im doing it for a yt video ps im lazarbeam.if u saw this you are winning 2000 in  my video that will drop tommorow

ANSWERED AT 31/03/2020 - 10:46 AM


QUESTION POSTED AT 31/03/2020 - 10:46 AM

If 8:12 = 6:a then the value of a is?

8/12 = 6/a

8a = 72
a = 9

ANSWERED AT 31/03/2020 - 10:44 AM


QUESTION POSTED AT 31/03/2020 - 10:44 AM

Over the last 12 month, Petco has lost a total of $1824.00 due to shoplifting. Write and solve an equation that shows how much money Petco lost each month. ( Since they have lost the money, remember that you need to use negative integers to represent the situation correctly.)

Take y=mx+b  
let x=years and 
y=lost money

then divide 1824 by 12 = 152
and since it is a loss make it into -152
and insert it for m as the constant rate of loss per month
your answer should be y=-152x.
if the store has a starting amount of money plug that into b.

ANSWERED AT 31/03/2020 - 10:40 AM


QUESTION POSTED AT 31/03/2020 - 10:40 AM

What is the value for x that makes the following equation true? 4/7x=2/5

4/7x = 2/5
4/7(7/4)x = 2/5(7/4)
x = 14/20
x=7/10

ANSWERED AT 31/03/2020 - 10:39 AM


QUESTION POSTED AT 31/03/2020 - 10:39 AM

It takes Ivanna 3 minutes to complete 2 problems on her math homework . How long will it take Ivanna to complete 12 problems?

3 min to complete 2 problems
___ min to complete 12 problems  

It took her 6 min. Why. Divided 12 divided by 2 is 6. So if it took her 3 min to complete 2 problems then it took her 6 min to complete 12 problems. 
  


                      

ANSWERED AT 31/03/2020 - 10:37 AM


QUESTION POSTED AT 31/03/2020 - 10:37 AM

Simplify, following the order of operations: 5+10^2-3 x (12-8)

It would be 93, as PEMDAS is in play

ANSWERED AT 30/03/2020 - 01:36 AM


QUESTION POSTED AT 30/03/2020 - 01:36 AM

4 + 12 + 36 + … ; n = 15

I've attached a picture below of the formula for a finite geometric sequence. It includes an infinite geometric sequence formula for your reference, too.

a_1 = 4
r(ratio)= 3
n=15

Plug in the values. 

S_{15} = 4*( \frac{1-3^{15}}{1-3} )
S_{15} = 4*( \frac{1-3^{15}}{-2} )
S_{15} = 4*( \frac{1-14348907}{-2} )
S_{15} = 4*( \frac{-14348906}{-2} )
S_{15} = 4*7174453
S₁₅ = 28697812

ANSWERED AT 29/03/2020 - 11:43 PM


QUESTION POSTED AT 29/03/2020 - 11:43 PM

Which of the equation has a solution of 9. A. W-12=21 B. R- 1 = 10 C. A + 3 = 12 D. M + 9 = 81

Well C because
a+3=12
    -3    -3 
a= 9

ANSWERED AT 29/03/2020 - 06:28 PM


QUESTION POSTED AT 29/03/2020 - 06:28 PM

True or false? The first distribution shown below has a smaller mean than does the second.

The awnser is  It is true

ANSWERED AT 29/03/2020 - 06:25 PM


QUESTION POSTED AT 29/03/2020 - 06:25 PM

A segment has endpoints at (7,12) (-5,-9) what is the x coordinate of the midpoint of that segment

You have two points so you can use the midpoint formula.
The midpoint formula is (x1 + x2/2, y1 + y2/2).
In this case you are solving for the x-coordinate of the midpoint so you are solving x1 + x2 / 2. Just plug in 7 for x1 and -5 for x2 and solve

ANSWERED AT 29/03/2020 - 06:18 PM


QUESTION POSTED AT 29/03/2020 - 06:18 PM

The length of a semicircle is half the perimeter of the circle to which it belongs. True or false

True? A semi- circle is half a circle, so the perimeter would have to be half of a circle. Hope this helps 

ANSWERED AT 29/03/2020 - 04:32 PM


QUESTION POSTED AT 29/03/2020 - 04:32 PM

What is12×12=? Please tell me the answer

The answer is 12*12=144

ANSWERED AT 29/03/2020 - 04:32 PM


QUESTION POSTED AT 29/03/2020 - 04:32 PM

At a carnival game, you randomly throw two darts at the board and break two balloons out of 15. What is the probability that both the balloons you break are purple? Write your answer as a fraction or percent rounded to the nearest tenth. (3 red, 4 blue, 2 green, 2 yellow, 4 purple)

Add up the total number of balloons (15) there are 4 purples so the probably of you getting purple at all is 4/15. consider that after you hit the first purple, your odds decrease to 3/14. 

ANSWERED AT 28/03/2020 - 01:00 PM


QUESTION POSTED AT 28/03/2020 - 01:00 PM

The ordered pair (-2, -4) is the 4th quadrant true or false

False should be the answer

ANSWERED AT 28/03/2020 - 12:59 PM


QUESTION POSTED AT 28/03/2020 - 12:59 PM

Compute and compare the side lengths of the two figures. Does this support an argument claiming that they are congruent? What else must be true to say two polygons are congruent?

The side lengths of the two figures can be calculated with the distance formula:

 √ (x1 - x2)² + (y1 - y2)²        

AB = √13  

BC = √13      

CD = √13    

DA = √13  

A'B' = √13      

B'C' = √13      

C'D' = √13      

D'A' = √13

They are all the same lengths. This supports an argument claiming that they are congruent because if the sides are congruent, then the two polygons are congruent.

Something else that must be true to say that two polygons are congruent is that the angles have equal measures.

Hope this helps! :)

ANSWERED AT 28/03/2020 - 12:59 PM


QUESTION POSTED AT 28/03/2020 - 12:59 PM

Given points A(4,5) and B(-4,11). Find the distance AB to the nearest tenth.

If A(x', y') & B(x",y") the the distance AB is given by the following formula:

AB =√[(x"-x')² + (y"-y')²]

Plug into the above with A(4,5) and B(-4,11).

AB =√[(-4-4)²+(11-5)²] =√(-8)²+(6)² = √(64) + (36) =√100 = 10

ANSWERED AT 28/03/2020 - 12:55 PM


QUESTION POSTED AT 28/03/2020 - 12:55 PM

What are the intercepts of 6x + 8y = 24? a.(4, 0) and (0, 1) b.(12, 0) and (0, 1) c.(3, 0) and (0, 4) d.(4, 0) and (0, 3)

6x + 8y = 24

x intercept is the value when y =0 & y intercept is the value when x=0


for y=0 ==> 6x+0 =24 ==> x=4 for x=0==> 0+8y =24 ==> y=3

(4,0) & (0,3) (ANSWER d)

ANSWERED AT 28/03/2020 - 12:46 PM


QUESTION POSTED AT 28/03/2020 - 12:46 PM

Ιғ a cιrcle нaѕ a radιυѕ oғ 12 cм and a ѕecтor deғιned вy a 120 degree arc, wнaт ιѕ тнe area oғ тнe ѕecтor

120
times 12 - 360
it should give you the right answer if you solve the problem like that

ANSWERED AT 28/03/2020 - 12:46 PM


QUESTION POSTED AT 28/03/2020 - 12:46 PM

Jorge needs to ship a thin metal rod to a metalworking shop. The only boxes available for shipping are 7-inch cubes. To the nearest inch, what is the length of the longest metal rod that can be sent? 11 inches 12 inches 13 inches 14 inches

Answer:

The length of the longest metal rod that can be sent is 12 inches.

Step-by-step explanation:

As given, the only boxes available for shipping are 7-inch cubes. As Jorge needs to ship a thin metal rod to a metalworking shop, he will put the rods diagonally or space diagonally in the box.

The space diagonal of a cube can be found by the formula :

D=\sqrt{x^{2}+x^{2}+x^{2} }

= \sqrt{3} x

Here, x is 7 inches.

So, Diagonal is = \sqrt{3} \times7

= 1.732\times7=12.12 inches.

Rounding this to nearest whole number we get 12.

So, the length of the longest metal rod that can be sent is 12 inches.

ANSWERED AT 28/03/2020 - 12:44 PM


QUESTION POSTED AT 28/03/2020 - 12:44 PM

Which statement is true for log3(x+1)=2

Answer:

x = 8 is the correct statement.

Step-by-step explanation:

The given statement is log_{3}(x+1)=2

Now from the rules of the logarithm

log_{3}(x+1)=2

3^{2}=(x+1)  [Since log_{a}b=c\Rightarrow b=a^{c}]

Therefore 3^{2}=(x+1)

x + 1 = 9

x = 9 - 1 = 8

Therefore answer will be x = 8.

ANSWERED AT 28/03/2020 - 12:44 PM


QUESTION POSTED AT 28/03/2020 - 12:44 PM

To win a prize in a archery contest,Kenny must score an average of 70 points or above after 3 rounds.Kenny scores 76 points and 65 points in the first two rounds.To win a prize,what is the minimum score Kenny must get in the third round?

I think it's 71 because I added up 76 and 65 to get 141 then I subtracted 70 to get 71. He had 71 points in the third round to win a prize. Hope this helped ( :

ANSWERED AT 28/03/2020 - 12:42 PM


QUESTION POSTED AT 28/03/2020 - 12:42 PM

True or False? The sum of the differences must be zero for any distribution consisting of n observations.

Answer:

it's right, it's true

Step-by-step explanation:

ANSWERED AT 28/03/2020 - 12:37 PM


QUESTION POSTED AT 28/03/2020 - 12:37 PM

What is the area of triangle DEF? Round to the nearest tenth of a square unit. 10.3 square units 18.0 square units 20.0 square units 20.6 square units

Since we are given 2 sides and 2 angles, we can use the Side Angle Side (SAS) method. The area of a triangle is given by the formula:
Area = absinC/2; where a and b are adjacent sides and C is the angle between a and b.

Area = 5*8*sin31°/2 = 10.3 square units.

ANSWERED AT 28/03/2020 - 12:34 PM


QUESTION POSTED AT 28/03/2020 - 12:34 PM

In one year Jane laid 12 dozen eggs. How many eggs is that?

The answer is 144, you multiply 12 times 12.

ANSWERED AT 28/03/2020 - 12:34 PM


QUESTION POSTED AT 28/03/2020 - 12:34 PM