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4 years ago

10 pol

Mathematics

1 answer:

const2013 [10]4 years ago

4 0

False, The sum is positive, no subtraction is being done and no negatives are present.

A positive plus a positive is another positive.

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Which of these graphs represents a rate of change of 4?

mamaluj [8]

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3 years ago

Y = x^2 - 4 <br> y= x + 2

Snezhnost [94]

Hopes this help:

Answer: x = 3, -2 & y = 5, 0

Hopes this is the answer that you where looking for if not I am so sorry.

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2 years ago

Does anyone know the square root of 10,221? My online teacher wants me to figure it out. :)

faust18 [17]

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8 0

3 years ago

Without multiplying all the terms, verify these equalities. a) 10!= 6!7! b) 10!=7!5!3! c) 16!= 14!5!2! d) 9!=7!3!3!2!

Romashka-Z-Leto [24]

Answer:

a)10! = 6×5×4×3×2 ×7!

10! = 6! 7! (Verified)

b)10! = 3! × 5! × 7! = 7!5!3! (Verified)

c)16! = 2! × 5! × 14!

16! = 14!5!2! (Verified)

d)9! = 3! × 3! ×2! × 7!

9! = 7!3!3!2! (Verified)

Step-by-step explanation:

a) 10!= 6!7!

10! = 10×9×8×7!

Reducing to their lowest factors

10! = (2×5)×(3×3)×(2×2×2) × 7!

Rearranging the factors, we have;

10! = (2×3)×(5)×(2×2)×(3)×2 × 7!

10! = 6×5×4×3×2 ×7!

10! = 6! 7! (Verified)

b) 10!=7!5!3!

10! = 10×9×8×7!

10! = (2×5)×(3×3)×(2×2×2) × 7!

Rearranging the factors, we have;

10! = (2×3)×(5)×(2×2)×(3)×2× 7!

10! = (3×2×1) × (5×4×3×2×1) × 7!

10! = 3! × 5! × 7! = 7!5!3! (Verified)

c) 16!= 14!5!2!

16! = 16×15×14!

16! = (2×2×2×2) × (5×3) × 14!

Rearranging the factors.

16! = (2) × (5) × (2×2) × (3) × (2) ×14!

16! = (2!) ×(5×4×3×2) × 14!

16! = 2! × 5! × 14!

16! = 14!5!2! (Verified)

d) 9!=7!3!3!2

9! = 9×8×7!

9! = (3×3) × (2×2×2) × 7!

Rearranging the factors

9! = (3×2) ×(3×2) ×(2) × 7!

9! = 3! × 3! ×2! × 7!

9! = 7!3!3!2! (Verified)

3 0

3 years ago

A sphere has a surface area of 80 square feet. Which choice is the closest to its radius? Use 3.14 to approximate pi.

solniwko [45]

Answer: 2.524 ft
----
The equation for the surface area of a sphere is $SA = 4 \pi r^2$ .
SA = surface area
r = radius

You're told that the surface area, SA = <span>80 square feet. Plug that into the equation and solve for r:
</span> $80 = 4 \pi r^2\\
20 = (3.14) r^2\\
 r^2 = \frac{20}{3.14} \\
r = \sqrt{ \frac{20}{3.14}}\\
r \approx 2.524 \: ft$ <span>
</span>

6 0

4 years ago

Read 2 more answers