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Oliga [24]
2 years ago
8

Estimate. Round to the greatest place value. Circle whether the estimate is greater then or less then the actual product.

Mathematics
1 answer:
nataly862011 [7]2 years ago
4 0

Answer:

The estimate is greater then.

Step-by-step explanation:

143*2=286

286*2=572 not 6,517

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ratio of a rectangle's length to its width is 4:7. If the longer side is 31.5in., find the width, the perimeter, and the area of
Nikitich [7]

Answer:

Step-by-step explanation:

Ratio of length : width = 4 : 7

Length = 4x

Width = 7x

Longer side = 31.5 in

⇒ 7x = 31.5

Divide both sides by 7

x = 31.5/7

x = 4.5

length = 4x

           = 4*4.5

         l = 18 in

width =  31.5

       w = 31.5 in

\boxed{ \text {Perimeter of  rectangle }= 2*l + 2*w}

                                      = 2*18 + 2*31.5

                                      = 36 +  63

                                      = 99 in

\boxed{ \text{Area of rectangle = l*w}}

                             = 18*31.5

                             =  567 in²

                             

3 0
1 year ago
The sum of two complex numbers is −3 + 5i. If one of the complex numbers is 1−8i, which answer choice below is the other number?
AnnyKZ [126]

Answer:

C

Solution

For a complex number written in the form a + bi, a is called the real part of the complex number and b is called the imaginary part. The sum of two complex numbers, a + bi and c + di, is found by adding real parts and imaginary parts, respectively, that is, (a + bi) + (c + di) = (a + c) + (b + d)i. Therefore, the sum of 2 + 3i and 4 + 8i is (2 + 4) + (3 + 8)i = 6 + 11i.

Choice A is incorrect and is the result of disregarding i and adding all parts of the two complex numbers together, 2 + 3 + 4 + 8 = 17. Choice B is incorrect and is the result of adding all parts of the two complex numbers together and multiplying the sum by i. Choice D is incorrect and is the result of multiplying the real parts and imaginary parts of the two complex numbers, (2)(4) = 8 and (3)(8) = 24, instead of adding those parts together.

6 0
2 years ago
What is the net force acting on a 3000kg sled that accelerated a 5 m/s2
katovenus [111]

Answer:

15000 Newtons

Step-by-step explanation:

Force (in newtons)= weight * acceleration = 3000kg * 5 m/s^2 = 15000 N

5 0
3 years ago
HELP ME PLZ I NEED HELP
german

Answer:

A

Step-by-step explanation:

\frac{12}{a} = \frac{9}{b} => 12b = 9a

12 * 1.5 = 9 * 2

18 = 18

This option works

5 0
3 years ago
(PLEASE ANSWER) Which expression is the prime factorization of 180X²Y? *
kenny6666 [7]
I have no clue but I think it’s 959583”04&6&(9;
3 0
3 years ago
Read 2 more answers
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