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Kisachek [45]
3 years ago
8

How do i do these two while using a proportion?

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0
For #2, the proportion would be .40/.25 and x/15, then you would cross multiply to find x. and for #3 the proportion would be 15/6 and 75/x and again you would cross multiply to find x. (:
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Roberta jogs 3 laps the first day, 5 laps the second day, 7 laps the third day,
Goshia [24]

Answer:

Roberta will jog 13 laps on the sixth day.

Step-by-step explanation:

In the pattern 3, 5, 7 we can see it is adding 2 each day.

Keep adding 2 until you get to 13, which is the sixth day.

6 0
3 years ago
Simplify (2x+y^2) (2y-4x-3y^2)
Naya [18.7K]

explaining

 

Algebra

 

Simplify (2x^2)(4x^3y^2)

(2x2)(4x3y2)(2x2)(4x3y2)

Multiply x2x2 by x3x3 by adding the exponents.

Tap for more steps...

2x5(4y2)2x5(4y2)

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2⋅4(x5y2)2⋅4(x5y2)

Multiply 22 by 44.

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5 0
3 years ago
Evaluate: f(x) = 2x^2 + 6x - 4; f(-5) *
jasenka [17]

f(x)=2x^2+6x-4\\

Find f(-5) by substituting x = -5 in the equation.

f(-5)=2(-5)^2+6(-5)-4\\f(-5)=2(25)-30-4\\f(-5)=50-34\\f(-5)=16

Therefore, the answer is f(-5) = 16

8 0
2 years ago
Read 2 more answers
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lord [1]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Identify the area of the rhombus. PLEASE HELP! I'm desperate!!
Naddika [18.5K]

Area = 1/2(diagonal) * √4*side^2 - diagonal^2

Area = 1/2(16)*√(4*17^2 - 16^2)

Area = 8 * √(4*289-256)

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Area = 8 * 30

Area = 240 m^2

4 0
3 years ago
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