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3 years ago

Two lines that intersect to form right angles are called what?

Mathematics

2 answers:

Zanzabum3 years ago

8 0

<span>Two lines that intersect to form right angles are called </span>Perpendicular lines

Diano4ka-milaya [45]3 years ago

3 0

Perpendicular lines like a cross on a grid with four quadrants two lines that intersect forming for 90 degree angles are called perpendicular lines.<span />

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A basic cellular phone plan costs $4 per month for 70 calling minutes. Additional time costs $0.10 per minute. The formula C= 4+

Harrizon [31]

Answer:

For a monthly cost of at least $7 and at most $8, you can have between 100 and 110 calling minutes.

Step-by-step explanation:

The problem states that the monthly cost of a celular plan is modeled by the following function:

$C(x) = 4 + 0.10(x-70)$

In which C(x) is the monthly cost and x is the number of calling minutes.

How many calling minutes are needed for a monthly cost of at least $7?

This can be solved by the following inequality:

$C(x) \geq 7$

$4 + 0.10(x - 70) \geq 7$

$4 + 0.10x - 7 \geq 7$

$0.10x \geq 10$

$x \geq \frac{10}{0.1}$

$x \geq 100$

For a monthly cost of at least $7, you need to have at least 100 calling minutes.

How many calling minutes are needed for a monthly cost of at most 8:

$C(x) \leq 8$

$4 + 0.10(x - 70) \leq 8$

$4 + 0.10x - 7 \leq 8$

$0.10x \leq 11$

$x \leq \frac{11}{0.1}$

$x \leq 110$

For a monthly cost of at most $8, you need to have at most 110 calling minutes.

For a monthly cost of at least $7 and at most $8, you can have between 100 and 110 calling minutes.

8 0

4 years ago

You are ordering a meal and have $15 to spend on. The restaurant charges 6% sales tax and you plan to leave a 15% tip. The equat

Lynna [10]

Just solve the equation, x + 0.15x + 0.06x = 15
1.21x = 15,
x = $12.39 (nearly)

4 0

3 years ago

Read 2 more answers

There are 55 apples in each row. There are 5000 rows. How many apples in all?

koban [17]

Answer:

you would take the amount of apples per row and multiply it by the amount of rows, so in this case it would be 55x5000 which is 275000

there's 275000 apples in all

8 0

3 years ago

42 watts used in 3 seconds

denis-greek [22]

So am I supposed to divide or multiply

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4 years ago

Tim works for a company his normal rate of pay is 10 per hour on Friday Tim worked 4 hours overtime his overtime pay is 1 1/2 ti

Flauer [41]

Answer:

60 .

Step-by-step explanation:

Normal pay for 4 hours = 10 * 4 = 40.

Overtime for 4 hours = 40 * 1 1/2

= 60.

5 0

4 years ago