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Harlamova29_29 [7]
3 years ago
10

would you choose to use a hundred chart to solve 90- 80? why or why. not ? if not. which strategy would work better?

Mathematics
1 answer:
notsponge [240]3 years ago
5 0
I would use a tens chart because both numbers are multiples of 10, and there both under 100, so it would work out better if u use a tens chart, since the numbers are in the tens place and would give u a product of 10.

i hope this helps u <span />
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Please help me with this math problem I don’t know it I need to pass this class !!!!!!
Alisiya [41]

The correct option is Option 4: 2a^2b^3 + 10ab^4

Step-by-step explanation:

Given

Length of box = l = ab

Width of box = w = a+5b

Height of box = h = 2b^2

The volume of a box is given by:

V = Length*Width*Height\\V = l*w*h

Putting the values

V = (ab)(a+5b)(2b^2)\\ = (ab)(2b^2)(a+5b)\\=(2ab^3)(a+5b)\\Distributive property\\=(2ab^3*a) + (2ab^3*5b)\\=2a^2b^3 + 10ab^4

Hence,

The correct option is Option 4: 2a^2b^3 + 10ab^4

Keywords: Volume, Polynomials

Learn more about polynomials at:

  • brainly.com/question/9103248
  • brainly.com/question/9323337

#LearnwithBrainly

4 0
3 years ago
25. The sides of the base of the square prism drawn below have been doubled, but its height has not been changed. Determine the
bixtya [17]
Do you have a picture to go with it
4 0
3 years ago
Read 2 more answers
Which best describes the graph of a quadratic function witha discriminant of -7?
Anettt [7]
That means that it has 2 complex roots, and it has no x intercepts, means that it doesn't touch the x axis at all
6 0
3 years ago
What is the slope of the line that passes through the points ( − 1 , − 7 ) (−1,−7) and ( 1 , − 13 ) (1,−13)? Write your answer i
Paraphin [41]

Answer:

y = -3x -10

Step-by-step explanation:

Slope-intercept formula: \frac{y_2-y_2}{x_2-x_1}

Find slope of  (−1, −7) and (1, -13)

\frac{y_2-y_2}{x_2-x_1}\\\\\\frac{-13-(-7)}{1-(-1)}\\\\\\frac{-6}{2}\\\\\-3

y = mx + b

y = -3x +b

y = -3x +b\\-7 = -3(-1) + b\\-7 = 3 +b\\-3   -3\\-10 = b

y = -3x -10

Hope this helps!

3 0
2 years ago
What is the answer to the problem i need help with?
AveGali [126]

Answer:

C

Step-by-step explanation:

Recall the equation for a circle:

(x-h)^2+(y-k)^2=r^2, where the center is (h,k) and the radius is r.

The given equation is:

(x+5)^2+(y+7)^2=21^2

Another way to write this is:

(x-(-5))^2+(y-(-7))^2=21^2

Thus, we can see that h=-5 and k=-7.

The center is at (-5, -7).

6 0
3 years ago
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