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Orlov [11]
3 years ago
15

The measures of a complementary angles have a summer 90° angle and angle B or complementary and their measures have a difference

of 20° what are the measures of the angles
Mathematics
1 answer:
antiseptic1488 [7]3 years ago
8 0

Ok, so we kno that

A + B = 90

we also know that

A - B = 20

There are a lot of ways to solve this, but I think elimination will be best

   A + B = 90

+ (A - B = 20)

-----------------------

  2A = 110

A = 55

Therefore,

B = 90 - 55 = 35


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A value is in the domain if there is a ____ on the graph of the function at that x-value
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<span>A value is in the domain if there is a point on the graph of the function at that x-value</span>
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3 years ago
An mp3 player is on sale for 30% off the regular price of $39.98. How much is the discount? a. $11.99 b. $13.19 c. $13.33 d. $27
bagirrra123 [75]

Answer:

$11.99

https://www.percent-off.com/_30_%25+off_39.98_

(A calutor for you to use I used it to help my mom shop)

6 0
3 years ago
The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 40. What is the age of the person
ad-work [718]

Answer:

40

Step-by-step explanation:

5 people in the room have  5*40 = 200 years altogether

a new person is X years old.

Now 6 people have (200 + x) years altogether.

Mean age of 6 people  is (200+x)/6. and it is also = 40.

So,

(200+x)/6 = 40

200 + x = 240

x = 40

6 0
3 years ago
At Norman's Newsstand, 5 magazines cost $20.00. How many magazines could you buy with $44.00?
kobusy [5.1K]

Answer: 11 magazines

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1)     20/5 = $4 per magazine

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8 0
3 years ago
Read 2 more answers
Emma is making a recipe that needs 2 1/2 cups of sugar. Each
IrinaVladis [17]

The given partial fraction divided by the fraction of sugar in a scoop is

equal to multiplying the partial fraction by the reciprocal of the fraction.

  • The number of scoops of sugar needed is <u>10 scoops</u>.

Reasons:

The amount of sugar the recipe Emma is making needs = 2 1/2 cups

Amount of sugar in each scoop of sugar = 1/4 cups

Required:

The amount of scoops Emma needs to add for the entire recipe

Solution:

The amount of sugar needed = 2 1/2 cups

Amount of sugar per scoop = 1/4 cups/scoop

Therefore;

  • \displaystyle Number \ of \ scoops = \mathbf{\frac{Cups \ of \ sugar \ needed}{Cups \ of \ of \ sugar \ per \ scoop}}

Which gives;

  • \displaystyle Number \ of \ scoops \ needed  = \mathbf{\frac{2 \frac{1}{2}  \ cups \ of \ sugar }{\frac{1}{4} \  cups \ of \ sugar \ per \ scoop}}

\displaystyle  2 \frac{1}{2} = \frac{5}{2}

\displaystyle \frac{ \frac{5}{2}}{\frac{1}{4} } =  \mathbf{ \frac{5}{2} \times \frac{4}{1} = \frac{20}{2 }} = 10

Therefore;

\displaystyle Number \ of \ scoops \ needed  = \mathbf{\frac{2 \frac{1}{2}  \ cups \ of \ sugar }{\frac{1}{4} \  cups \ of \ sugar \ per \ scoop}} = 10 \, scoops

The number of scoops she needs for the entire recipe is <u>10 scoops</u>

Learn more about division by fractions here:

brainly.com/question/20591763

3 0
3 years ago
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