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Alex787 [66]
2 years ago
10

Alexandra was out at a restaurant for dinner when the bill came. She wanted to leave a tip of 13%. What number should she multip

ly the cost of the meal by to find the total plus tip in one step?
Mathematics
1 answer:
Karo-lina-s [1.5K]2 years ago
8 0

Answer:

<em>x</em> = Total meal cost

<em>y</em> = Total cost-plus tip

113% * <em>x</em>  =  <em>y</em>

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Explain Washington's choices regarding the Battle of Trenton and why he needed to make such a tough choice
evablogger [386]

Answer:

They gave Americans confidence that victory over Britain was possible. You are welcome. :)

Step-by-step explanation:

7 0
3 years ago
22. The measures of the angles of ADEF are in the ratio 2:4:4. What are the
denis23 [38]

The measures of the angles of Δ DEF are 36° , 72° , 72°

Step-by-step explanation:

The sum of the measures of the interior angles in any triangle is 180°

In Δ DEF

The ratio between the measures of its interior angles is 2 : 4 : 4

To find the measure of each angle

1. Find the sum of the ratio between the measures of its angles

2. Divide 180° by the sum of the ratio

3. Multiply the quotient by each ratio

∵ The ratio between the measures of the angles of Δ DEF = 2 : 4 : 4

∴ The sum of the ratio = 2 + 4 + 4 = 10

→    m∠D    :    m∠E    :    m∠F    :   sum of the ratio

→    2          :    4          :    4          :   10

→    ?          :     ?          :    ?          :   180°

Divide 180 by 10, then multiply the quotient by the components of

the ratio to find the measure of each angle

∵ m∠D = (2)\frac{180}{10}

∴ m∠D = 36°

∵ m∠E = (4)\frac{180}{10}

∴ m∠D = 72°

∵ m∠F = (4)\frac{180}{10}

∴ m∠F = 72°

The measures of the angles of Δ DEF are 36° , 72° , 72°

Learn more:

You can learn more about the ratio in brainly.com/question/2707032

#LearnwithBrainly

3 0
3 years ago
Find the value of an exterior angle of a polygon with 12 sides​
Juli2301 [7.4K]

Answer:

\huge \boxed{30\°}

Step-by-step explanation:

To find the value of an exterior angle of a regular polygon, we can apply a formula.

\displaystyle \frac{360}{n}

n = \sf number \ of \ sides

\displaystyle \frac{360}{12}=30

3 0
3 years ago
Read 2 more answers
Mark this question "True" if the argument is VALID, and "False" if the argument is INVALID: If this number is larger than 6, the
sleet_krkn [62]

This argument is no valid although the first part of the statement is valid. If a number is larger than 6 than its square must be larger than 36. But if the number is smaller than 6, its square does not need to be smaller than 36. For example...

(-100)²=10000

-100 is smaller than 6 but its square is bigger.

answer: False

7 0
3 years ago
The fastest a human has ever run is 27 miles per hour. How many miles per minute did the human run
Kay [80]

(27 mi/hr) x (1 hr / 60 min)  =  (27/60) (mi/min)  =  0.45 mile/minute

Using the same kind of calculation, we can see
that the world record times for other distances
correspond to:

200 meters                  23.31 mph
400 meters                   20.72 mph
800 meters                   17.73 mph
1000 meters                 16.95 mph
1500 meters                 16.29 mph
1 mile (1,609 meters)    16.13 mph
2,000 meters                 15.71 mph
10,000 meters               14.18 mph
30,000 meters               12.89 mph
Marathon  (42,195 meters)    13.10 mph

Except for that one figure at the end, for the marathon,
which I can't explain yet and I'll need to investigate further,
it's pretty obvious that a human being, whether running for
his life or for a gold medal, can't keep up the pace indefinitely.

8 0
3 years ago
Read 2 more answers
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