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2 years ago

How can you add eight 4s together so that the total adds up to 500?

Mathematics

2 answers:

Bess [88]2 years ago

7 0

You can also multiply the 8 4s like 8x4 but it won’t add up to 500

s2008m [1.1K]2 years ago

4 0

Answer:

444+44+4+4+4

Step-by-step explanation:

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-0.2x^2+0.9x+0.6=y What's the vertex form for this equation?

hjlf

Answer: y = -0.2(x - 2.25)² + 1.6125

Step-by-step explanation:

$y = -0.2x^2 + 0.9x + 0.6\\\\y - 0.6 = -0.2x^2 + 0.9x\\\\y - 0.6 =-0.2(x^2-4.5x)\\\\y-0.6+\underline{(-0.2)(2.25)^2}=-0.2(x^2-4.5x+\underline{2.25^2})\\\\y-0.6-1.0125=-0.2(x-2.25)^2\\\\y-1.6125=-0.2(x-2.25)^2\\\\y=-0.2(x-2.25)^2+1.6125$

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3 years ago

A university council wants to determine the need for a new staff room. The council conducted a survey of the staff by randomly s

iogann1982 [59]

Answer:

As the sample size is appropriately large, the margin of error is 0.026

Step-by-step explanation:

7 0

2 years ago

The length of the segment between the points $(2a, a-4)$ and $(4, -1)$ is $2\sqrt{10}$ units. What is the product of all possibl

True [87]

Answer:

-3

Step-by-step explanation:

The length of a segment is

sqrt( ( y2-y1)^2 + (x2-x1) ^2) = 2 sqrt(10)

sqrt( ( a-4 - -1)^2 + (2a -4) ^2) = 2 sqrt(10)

sqrt( ( a-4 +1)^2 + (2a -4) ^2) = 2 sqrt(10)

Combine like terms

sqrt( ( a-3)^2 + (2a -4) ^2) = 2 sqrt(10)

Square each side

( a-3)^2 + (2a -4) ^2) = 4 *(10)

FOIL the left side

a^2 -6a +9 + 4a^2 -16a +16 = 40

Combine like terms

5a^2 -22a +25 = 40

Subtract 40 from each side

5a^2 -22a -15 =0

Factor

(a - 5) (5 a + 3) = 0

Using the zero product property

a-5 =0 5a +3 = 0

a = 5 5a = -3

a=5 a = -3/5

The product of the terms is

5 * -3/5 = -3

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3 years ago

The temperature of a city during a week was 35°C, 34°C, 36°C, 38°C, 40°C, 39°C and 44°C. What was the average daily temperature

Dovator [93]

38°C
average=sum/number
=266/7 = 38

4 0

3 years ago

Question What is the factored form of this polynomial? p(x) = x + 7x2 + 4x - 12

Soloha48 [4]

Answer:

^(3)+7x^(2)+4x-12

Step-by-step explanation:

8 0

2 years ago