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3 years ago

Do you guys now how to estimate 69.58.

Mathematics

2 answers:

nordsb [41]3 years ago

8 0

Estimates are typically whole numbers.

To estimate an answer, you would take whatever numbers you are trying to add/subtract/multiply/divide ect. and round them to the nearest whole number then complete said action with them.

Example: 3.99 + 33.85 + 31.74

3.99 is closest to 4

33.85 is closest to 34

and 31.74 is closest to 32

Then, we would add up all the numbers: 4 + 34 + 32 = 70

70 is very close to 69.58, therefore 70 is a good estimate.

andreev551 [17]3 years ago

4 0

Answer:

The answer is 70 if it's to whole number but if it's just rounding to the tenth spot it's 69.6

Step-by-step explanation:

It's 70 because if the tenth spot(the number after the decimal) is 5 or higher you add one on the one spot so that's why it's 70

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if the sum of roots of the quadratic equation x^(2)-3kx-(k+2)=0 is equal to the product of roots,find k

love history [14]

Answer:

1/2

Step-by-step explanation:

quadratic equation is ax²+bx+c=0

Products of roots is c/a

Sum of roots is -b/a

On comparing the above equation with general equation we have

a=1

b=-(3k)

c=-(k+2)

Now it is given that sum of roots and product of roots is equal

So,

-b/a=c/a

-b=c

-[-(3k)]=-(k+2)

3k=-k-2

3k+k=-2

4k=-2

k=-1/2

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3 years ago

Easy Question, Easy points

defon

Answer:

20,000 cm³

Step-by-step explanation:

The shape is a triangular prism

Base area × height

½ × 20 × 25 × 80

20,000 cm³

3 0

3 years ago

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What is the volume of a cylinder if the radius is 8 and the height is 6

gizmo_the_mogwai [7]

Answer:

1205.76

Step-by-step explanation:

The formula for volume of a cylinder is : π(or 3.14)r²h

Plug in the variables and solve

(3.14)(8)²(6)

(3.14)64(6)

384(3.14)

1205.76

Hope this helps

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3 years ago

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Assignment due today Q-Q<br> 9 1/2=k/9

nikdorinn [45]

$\huge\mathfrak\blue{answer}$

$= q - \frac{q91}{2} = \frac{k}{9}$

$\blue{switch \: sides}$

$= \frac{k}{9} = q - \frac{q91}{2}$

$\blue{multiply \: 9 \: both \: sides}$

$= \frac{9k}{9} = 9q - 9 \: . \: \frac{q91}{2}$

$\blue{lastly \: simplify}$

$=\underline {k = 9q - \frac{{9q}^{91} }{2} }$

(mark me brainliest if you're satisfied)

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3 years ago

Solve the inequality.

Stells [14]

Answer:

x ≤ - 5

Step-by-step explanation:

Given

- 2x - 1 ≥ 9 ( add 1 to both sides )

- 2x ≥ 10

Divide both sides by - 2, reversing the symbol as a result of dividing by a negative quantity.

x ≤ - 5

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3 years ago

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