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3 years ago

Is 50 reasonable fir 7.8×1.1×4.2 estimated

1 answer:

5 0

No, it is not reasonable because the answer when all of those numbers are multiplied, the answer you get is 36.036.

Reasoning: If all those numbers multiplied equaled anywhere from 45-49, then it would be reasonable for 50 to be the estimation

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Solve for the total cost. Retail price: $12.95; discount rate: 15%; sales tax rate: 7%

Alchen [17]

Answer: $10.24

Step-by-step explanation: 12.95 * 0.15 = 1.94 12.95 - 1.94 = 11.01

11.01 * 0.07 = .77 11.01 - 0.77 = 10.24

8 0

3 years ago

PLEASE ANSWER REAL

Blababa [14]

Answer:

How come my answer gets deleted when a kid spammed -_-

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3 years ago

(x^3-6x^2-9)/(x-6) long division

qaws [65]

Answer:

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4 years ago

The width of a rectangle is the length minus 7 units. The area of the

AleksandrR [38]

Answer:

8 units

Step-by-step explanation:

here's your solution

=> let the length of rectangle be X

=> then width = x - 7

=> area = 8units

=>> area = length*width

=> area = x (x-7) = 8

=> x^2 - 7 = 8

=> now, x^2 - 7x - 8 = 0

=> factories the above equation by middle term split

=> x^2 - 7x - 8

=> x^2 - 8x + x - 8

=> take the common

=> x(x - 8) + 1(x - 8)

=> (x + 1) (x - 8)

neglect (x + 1) because this will in negative for X

=> x - 8 = 0

=> x = 8

=>so, x = 8

=>length = 8 units

3 0

3 years ago

Please help with geometry question

Hunter-Best [27]

Answer:

m∠J = 45° , m∠I = 45° and m∠M = 90°

And the ΔJIM is an isosceles right angled triangle.

Step-by-step explanation:

(a). In ΔJIM,

∠J = 2x + 15,

∠I = 5x - 30, and

∠M = 6x

Now, using angle sum property of a triangle that sum of all the angles in a triangle is 180°

⇒ ∠J + ∠I + ∠M = 180°

⇒ 2x + 15 + 5x - 30 + 6x = 180°

⇒ 13x -15 = 180°

⇒ 13x = 195

⇒ x = 15

Therefore, m∠J = 45° , ∠I = 45° and m ∠M = 90°

(b). Now, ΔJIM is a right angled triangle right angled at M.

Also, ∠J = ∠I = 45°

So, JM = IM ( because in a triangle sides opposite to equal angles are equal)

So, ΔJIM is an isosceles triangle because its two sides are equal.

Hence, ΔJIM is a right angled isosceles triangle right angled at M.

8 0

3 years ago