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IrinaK [193]
3 years ago
12

Which pair of angles has congruent values for the sin x° and the cos y°?

Mathematics
1 answer:
IRISSAK [1]3 years ago
7 0

Answer:

D

Step-by-step explanation:

We know that if angles x and y are complementary, then sin(x)=cos(y).

This means the measures of the angles have to add to 90 degrees, which is satisfied by the fourth option.

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a student is given a reading list of ten books from which he must select two for an outside reading requirement. in how many way
Lelechka [254]

Answer:

The ways in which he can make selection = 10\times 9 =90

Step-by-step explanation:

Student is having a list of 10 books.

Assuming that the student can't read the same book twice.

The student has 2 choices to make for an outside reading requirement,for his 1st choice, he had 10 books to choose from; for his 2nd, he has 9 books left to choose from therefore the total permutations of his choices are =10\times 9 =90

So the total ways in which the student can make his selection = 90

6 0
4 years ago
Find the perimeter of ADE
irga5000 [103]
At D point in the bottom then up and to the right upper corner to Letter B
5 0
3 years ago
I have $225.00 in my account. I can spend al but 20% of that on some new equipment. What is the most that I can afford to spend
Setler79 [48]
You can "spend all but 20%" so that means you can spend up to 80% of your money (since 20%+80% = 100%). Apply 80% to the value 225

80% of 225 = (80/100)*225 = 0.80*225 = 180

The most you can afford to spend is $180
3 0
4 years ago
P = a^b + b^a. Given a,b,p are prime numbers. find the value of p
VARVARA [1.3K]
2³   +  3² = 2*2*2+3*3= 8+9=17
a=2,
b=3,
P= 17,
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4 0
3 years ago
3. At the start of summer, Ben has $250 . He takes a summer
earnstyle [38]

Answer:

Week 4

Step-by-step explanation:

Ben has $250 in the beginning.  He saves $150 per week.

y = 150x + 250

Tim has $1,650 in the beginning.  He spends $200 per week.

y = 1650 - 200x

We are trying to find which x-value produces the same y-value for both equations.  You can do this by setting both equations equal to each other.

150x + 250 = 1650 - 200x

(150x + 250) + 200x = (1650 - 200x) + 200x

350x + 250 = 1650

(350x + 250) - 250 = (1650) - 250

350x = 1400

(350x)/350 = (1400)/350

x = 4

By week 4, they will have the same amount of money.

3 0
3 years ago
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