3 years ago

Please help with this question!

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

6 0

X=21.6 I think is the answer if I did my math wrong

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The Johnson twins were born four years after their older sister. This year, the product of the three siblings ages is exactly 34

svp [43]

Answer:

Step-by-step explanation:

Let age of each twin be x

let age of sister be s

So we can write:

x + 4 = s

The product of the 3 siblings ages is 3482 more than sum. We can write:

$s*x*x=3482+(s+x+x)$

This can be simplified as:

$sx^2=3482+s+2x$

We replace s with "x + 4" and solve:

$(x+4)x^2=3482+x+4+2x\\x^3+4x^2=3486+3x\\x^3+4x^2-3x-3486=0\\x=14$

Note: To solve this cubic, we used technology

Thus, we can say the twins are 14 years old

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3 years ago

3 bananas and 1 apple cost £2.45 1 apple costs £0.35 How much does 1 banana cost?

krok68 [10]

$2.10 hope this helps

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3 years ago

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What is the surface area of this right rectangular prism with dimensions of 6 inches by 4 inches by 12 inches A. 324 B.256 C.288

VMariaS [17]

Answer:

Step-by-step explanation:

(6 * 4 ) * 2 = 48

( 4 * 12 ) * 2 = 96

( 6 * 12 ) * 2 = 144

48 + 96 + 144 = 288

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2 years ago

Which list shows all the factors of 36?

almond37 [142]

Answer:

1,2,3,4,6,9,12,18,36 Is correct one

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Solve for d. -4d + 7 = 3d

STALIN [3.7K]

Step-by-step explanation:

The Answer Is

-4d + 7 = 3d

So, 7 = 3d + 4d

Then, 7 = 7d

•d = 7/7

= 1

So D = 1.

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2 years ago