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3 years ago

Which expressions would complete this equation so that it has one solution?

1 answer:

4 0

Try plugging in the equations
and d are not it because they eliminate x
4x-12=3x-4
x=8
4x-12=6x-18
2x=6
x=3
so both b and c work as answers

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What is the range of possible sizes for side x?

posledela

Answer:

x = 3.96

Step-by-step explanation:

apply the pitagoras theorem

x =

$\sqrt{ {2.8}^{2} + {2.8 }^{2} }$

4 0

2 years ago

Which values are solutions to the inequality square root of x is less than 8? A. 55 B. 8 C. -8 D. 4 E. 65 F. -64

Dima020 [189]

9514 1404 393

Answer:

A. 55

B. 8

Step-by-step explanation:

We want ...

√x < 8

x < 8² . . . . . square both sides

x < 64

In order for the inequality to make any sense, we must also have ...

0 ≤ x

So, the solution space is ...

0 ≤ x < 64

Only answer choices A (55) and B (8) are in that range.

4 0

3 years ago

A group of penguins swam 4/5 mile in 1/3 hour. Use the table to find how many miles the penguins swam in one hour if they swam a

Vinil7 [7]

Answer:

2.4 miles

Step-by-step explanation:

This is a simple ratio problem.

Penguins go 4/5 mile in 1/3rd hour. So how many miles will they go in 1 hour? Let that be x:

$\frac{\frac{4}{5}}{\frac{1}{3}}=\frac{x}{1}\\\frac{1}{3}x=\frac{4}{5}\\x=\frac{4}{5}*3=\frac{12}{5}$

That is 12/5 miles or 2 2/5 miles

In decimal, that's 2.4 miles

3 0

3 years ago

Read 2 more answers

What is the arc length of the semicircle

MrMuchimi

Answer:

The arc length of the semicircle is half the circumference of the full circle

8 0

3 years ago

Read 2 more answers

Please help, Thanks.

Evgen [1.6K]

Answer:

Step-by-step explanation:

49x² + 28xy + 4y² ← is a perfect square of the form

(ax + by)² = a²x² + 2abxy + b²y²

49 = 7² ⇒ a = 7 and 4 = 2² ⇒ b = 2

2ab = 2 × 7 × 2 = 28

Hence

49x² + 28xy + 4y² = (7x + 2y)²

with factor 7x + 2y ⇒ C

8 0

3 years ago