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3 years ago

What is the surface area

Mathematics

2 answers:

Tamiku [17]3 years ago

4 0

Answer: b

Step-by-step explanation:

pentagon [3]3 years ago

3 0

B: is your answer!!!!!!!!

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Find the missing sides. (Help me)

slavikrds [6]

Answer:

2nd one

Step-by-step explanation:

when it's a 45 45 and 90 triangle, it's 1, 1, sqrt 2, but now since the 1 is sqrt 2, v is sqrt 2, and u and sqrt 2 times sqrt 2, which is 2

3 0

3 years ago

10xy(4xy^3-7xy+9y^2)

Thepotemich [5.8K]

Answer:

$40x^{2} y^{4} -70x^{2} y^{2} +90xy^{3}$

Step-by-step explanation:

$10xy(4xy^{3} -7xy+9y^2)$

1. 10xy · 4xy^3 = $40x^2y^4$

2. 10xy · -7xy = $-70x^{2} y^{2}$

3. 10xy · 9y^2 = $90xy^3$

Final step: add up all of those values together to make an equation!

Answer: $40x^2y^4+$ $-70x^2y^2+$ $90xy^3$

Final Answer: $40x^2y^4-70x^2y^2+90xy^3$

3 0

3 years ago

Harry reads equal numbers of pages of a book every week. The graph shows the number of pages of the book left to read, y, after

horsena [70]

Answer:

$y=-55x+275$

Explanation:

The given points are:

(0, 275)
(1, 220)
(2, 165)
(3, 110)
(4,55)
(5, 0)

Since a straight line joins all the points, the equation that models the relationship is linear and you can find the slope-intercept equation which has the general form:

$y=mx+b$

Where:

$m$ is the slope

$b$ is the y-intercept

1. Find the slope

You can use any two ordered pairs.

m = rise/run = Δy/Δx = [220 - 275] /[1 - 0] = - 55

2. Find the y-intercept

The y-intercept is the value of y when x = 0; thus it is 275.

b = 275

3. Substitute in the slope-intercept equation

$y=-55x+275$

That is the last option.

5 0

3 years ago

The annual interest rate of Marta's savings account is 7.2% in a simple interest is calculated quarterly. What is the periodic i

Delvig [45]

1. You have the following information:

-The annual interest rate is 7.2%.
- The simple interest is calculated quarterly.

2. Then, to solve this exercise and calculate the periodic interest rate of Marta's Account, you only have to divide the annual interest rate (7.2%) by 1/4 year. So, you have:

=(7.2%)(1/4)
=(7.2%)/4
=1.8%

What is the periodic interest rate of Marta's Account?

The answer is: 1.8%

6 0

3 years ago

If the volume of a box is 1,463,000 cubic millimeters, what is the volume of the box in cubic meters? (1 millimeter = 0.001 mete

Stells [14]

Answer:

The volume of the box would be 0.001463 cubic meters

Step-by-step explanation:

You first have to to do the conversion from cubic milimiters to cubic meters using the rule given. A cubic milimiter is only 1^3 = or 1*1*1. We transform then this rule so it applies for cubic measures.

1 millimeter = 0.001 meter

(1 millimeter)^3 = (0.001 millimeter)^3 (raise to the cubic power)

1 cubic milimiter = (0.001*0.001*0.001) cubic meters= 0.000000001 or 1 * 10^-9 in scientific notation.

Then we us a rule of three as follows

1 cubic millimiter / 1 * 10^-9 cubic meters =1,463,000¨cubic milimiters / x cubic meters

x = 1,463,000*1 * 10^-9= 0.001463 cubic meters

8 0

3 years ago