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marusya05 [52]
3 years ago
11

Ivana and Gloria are sisters. Gloria is

Mathematics
1 answer:
Marina CMI [18]3 years ago
4 0

Answer:

11 years old

Step-by-step explanation:

3 years ago, Gloria was 32 years old

If Ivana's age is = x

Then, 4x = 32

            x = 8

3 years ago, Ivana was 8 years old

So now she is 11 years old.

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Answer:80

Step-by-step explanation:

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2 years ago
A rectangle has side lengths (2x-5) meters and (2x+6) meters. Write a linear expression in simplest form to represent the perime
RideAnS [48]
I’m pretty sure the answer is 12 expresion
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2 years ago
Find two positive numbers whose product is 64 and whose sum is a minimum. (If both values are the same number, enter it into bot
DedPeter [7]

Answer:

X = 8, y = 8

Step-by-step explanation:

This question is an optimization problem. Two equations are going to be needed here

n = x+y

P = xy

Such that 64 = xy

When we divide through by x we get:

y = 64/x

So that n becomes:

n = x + 64/x

n = x+64x^-1

We take derivative

n' = 1-64x^-2

When n' = 0 then a min|max occurs

0 = 1-64x^-2

Such that:

64/x² = 1

Divide through by x²

64 = x²

x = √64

x = 8

Remember y = 64/x

So,

Y = 64/8

Y = 8.

X = 8, y = 8

Thank you!

3 0
2 years ago
What is the expanded form of 709.104
andreev551 [17]
700 + 9 + .1 + .04

Hope this helps that the answer
5 0
3 years ago
Please help! I’ll give brainliest to whoever answers first :)
Tanya [424]

Answer:

Step-by-step explanation:

a triangles angles add up to 180

subtract 102 from 180

180-102

that’s 78

a and b are equal so divide 78 by 2 to get 39

a and b are both 39

6 0
3 years ago
Read 2 more answers
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