Mathematics Middle School

If r and t are the measures of two acute angles so that r + t = 90° , then cos r equals:
(1) sin(90° - t)

(2) sin(t + 90°)

(3) sin(t - 90°)

(4) sin t

Answers

Answer 1
The answer is 3 okomokko

Related Questions

Please help me with this volume problem!♪☂♧(^.^)

Answers

Answer:

30,000

Step-by-step explanation:

Okay so you know the formula. I would presume, so first you do 600 times 5 by doing just 6 times five which is 30 then adding the two zeroes back on. Then, proceed to multiply that by 10 by moving the decimal spot adding another 0. I hope this is correct.

Answer:

12 in

Step-by-step explanation:

Hey! Okay, so volume = l x h x w

We know the volume is 600, the height is 5, and the width is 10, so let's set up an equation.

volume = l x h x w

600 = l x 5 x 10

600 = l x 50

l = 600 / 50

l = 12

Hope that helps!

-Aphrodite

HELP THANK YOUU :))))

Answers

Its x^6 pls mark brainliest
x6 (c) is the correct answer

3. if y varies directly as x and y=23.1 when x=36.3, find y when x=11.
4. If y varies directly as x and y=4 when = 18, find y when x =27.
5.if y varies directly as x and y =6 when x =14 ,find y when x=35.
6.if y varies directly as x and y=2 when x=12, find y when x = 30.
7. if y varies directly as x and y=36 when x=60, find y when x=15.
8.if y varies directly as x and y=14 when x=16, find y when x=8.
please help me is a quiz thats do please help me

Answers

Answer:

the answer is 5 because thats the varible

Step-by-step explanation:

help please i need help if i get this one wrong i need to start over

Answers

Answer:

Step-by-step explanation:

Right/left by 3 units because in the equation, it added 3. Right because it is positive and Right/Left because this represents the change in the x-axis.

Up/Down by 5 units because in the equation, it added 5. Up because it is positive and Up/Down because this represnts  the change in the y-axis.

Please help me with this question

Answers

Answer:

5+5= 10 (diameter)

10*3.14=31.4(circumference)

Step-by-step explanation:

You go to a shop that sells tricycles. There are 18 wheels in the Wheel Shop.

How many tricycles are in the shop?
Explain how you know.

Answers

There are 6 tricycles.
Each tricycle has 3 wheels.
18 divided by 3 equals 6.
6

A tricycle has 3 wheels

So divide 18 by 3
= 6

Therefore there are three tricycles

x minus 1 < -4 What is the solution for the inequality?

Answers

Answer:

x < -3

Step-by-step explanation:

x - 1 < -4

add 1 on both sides...

x < -3

That is your answer :)

x < -3

I hope this helped!

Mrs. Velazco gave her students four options to choose from for the class project. Which option received 65% of the votes?

A.Option B and D
B.Option A and C
C.Option C and D
D.Option B and C

Answers

Answer:

A) Option B and D

Step-by-step explanation:

please rate 5 stars and hit the heart it is free and you can always change your mind later :)

The option which receives 65% of the votes is option B and option D.

What is Bar Graph?

Bar graphs are pictorial representation of the data using the rectangular columns or rectangular bars.

Here given a bar graph, which represents the percent of students voted for four options.

Percent of students who vote for option A = 15%

Percent of students who vote for option B = 30%

Percent of students who vote for option C = 20%

Percent of students who vote for option D = 35%

Sum of the percent of voted for options B and D = 30% + 35% =  65%

Hence the options B and D receives the 65% of votes of students.

Learn more about Bar Graph here :

https://brainly.com/question/30710058

#SPJ3

can someone do this dot plot for me :(( plss no links i beg you i would do it my self but i dont get the question will give branliest (HOPE YOU HAVE/HAD A NICE DAY )

Answers

Answer:

4 dots on 0. 9 dots on 1. 8 dots on 2. 5 dots on 3. 5 dots on 4. 3 dots on 5. 2 dots on 6. 2 dots on 7.

Step-by-step explanation:

There should be 4 dots on 0; 9 dots on 1; 5 dots on 3; 8 dots on 2; 5 dots on 4; 3 dots on 5; 2 dots on 6; and 2 dots on 7

can someone help me please

Answers

Answer:

determine the median of the x-values and the median of the y-values.

Step-by-step explanation:

Determine the median of the x-values and the median of the y-values

If the atomic mass of carbon is 12, and its atomic number is 6, how many neutrons will you find in a carbon atom?

Answers

Mass number =number of proton + number of neutron
12=6+number of neutron
12-6 = number of neutron =6

please help, I’m not good at math and I’m struggling lol how fun

Answers

Answer:

D. Y = x + 2

Step-by-step explanation:

The slope increases at a rate of 1 / 1, which is written as just x. The line starts at 2, which is at the y-intercept, a.k.a, where you get the +2 from.

Answer:

y = 2 + x

Step-by-step explanation:

Line is passing through the points (0, 2) and (1, 3)

y-intercept (b) = 2

Slope of line (m) = (3 - 2)/(1 - 0) = 1/1 = 1

Equation of line in slope intercept form is given as:

y = mx + b

Plugging the values of m and b.

y = 1x + 2 = x + 2

y = 2 + x

How does teh value of (18-12) divided by l2 compare to the value of 18-12?!?!?

Answers

Answer:

C is correct :)

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

hope this helps!

Anybody help me out??????

Answers

Answer:

choice A

Step-by-step explanation:

A is the better choice

6: 28 A.M - 10:08 A.M =
7:55 P.M - 5 hours and 50 minutes =
(Please answer quickly)

Answers

Answer:

1) 3 hours and 40 minutes

2) 2: 05 pm

Step-by-step explanation:

7 - 5 = 2

55 - 50 = 5

1. 3 hours and 40 minutes
2. 2:05 pm

Write an equation for the following situation

Answers

y=3x+4

(y) equals the total salads made. In order to figure this out, you would have to add the 4 salads already made plus the 3 salads being made each hour for however many hours they are making them. Since we don’t know how many hours they are making them, we use (x).

Answer:

y(x) = 4 salads + (3 salads/hour)x

Step-by-step explanation:

We start with the initial value of this function, y(0), which is 4 salads.  To this quantity we add 3 salads per hour of work, using x to represent the number of hours.  In summary, we have:

y(x) = 4 salads + (3 salads/hour)x

Example:  after 2 hours the number of salads made is 4 salads plus (3 salads/hour)(2 hours). or y(2) = 4 salads + 6 salads = 10 salads.

GIVING BRAINLIEST TO CORRECT ANSWER
Which statement is true about the information in the double line graph?

A. The number of customers at 12:00 doubled from Friday to Saturday.
B. There were more customers on Friday than Saturday.
C. The number of customers was less Saturday than Friday at 10:00 a.m. because many customers slept later.
D. There were eleven more customers Saturday at 1:00 p.m. than Friday at 1:00 p.m.

Answers

Answer:

D. there were eleven, more customers Saturday at 1:00p.m than Friday at 1:00p.m

Step-by-step explanation:

Sana makatulong

D would be the answer to that

I had to write something here so ignore what I am going to say. NSDBHJFGDKTRTEWGSFZFGSDYJFH

Answers

Answer:

OK TY SIR

Step-by-step explanation:

thanks hehehehehehe hehshdbd

What is 3/8 + 5/12???

Answers

Answer:

19/24

Step-by-step explanation:

Find a common denominator of the two numbers, 24 in this case.

3/8=9/24

5/12=10/24

9/24+10/24

19/24

Please help!!!


...

.

Answers

Answer:

you can use your phone in class wow

can you take a photo of the whole page for better understanding

Please help me .......

Answers

Answer:

ok so what we have here

Step-by-step explanation:

I’ve attached my answer...
The blue dots is were the reflected shape is
The red lines is to show the distance between the line is equal to when it’s reflected
Hope this helps!

I AM FAILING PLZ HELP ME ASAP A rectangular prism and its dimensions are shown in the diagram.

Answers

add all of the sides together and get your total! (don’t forget to line up the decimals)
add all of the sides together and get your total!!!

35% of the class are vegetarian. What is the minimum possible numbers in the class?

Answers

we need more info that can’t be the whole question
Is there any more information in this question? Otherwise it is impossible, we cant figure anything just by knowing one percentage number.

help me please I have no knowledge abt this

Answers

320 square inches
Multiply each rectangle and add everything up
Please give me Brainliest
Answer: 320 square inches!

QUESTION 1
PLEASE HELP MEEEEEEE

Answers

Answer:

D is the correct answer

hope this help

Answer:

D

Step-by-step explanation:

d is the answer

Please help me find the area of the trapezoid

Answers

Answer:

96

Step-by-step explanation:

A= a+b/2 h

a= baseb= baseh= height

10+14/2=12*8=96

I hope it will help

Jason and Saharat each had a repair made on their PlayStation. The initial cost of each repair is $100. Jason and Saharat each have two coupons. Each of them uses both of his coupons toward the cost of the repair. One coupon is for $8 off the repair cost. The other coupon is for 15% off the repair cost. Jason and Saharat use their coupons in a different order, as shown below. Jason uses the $8 off the repair coupon first. He then uses the 15% off the repair cost coupon on the remaining balance. Saharat uses the 15% off the repair cost coupon first. He then uses the $8 off the repair cost coupon on the remaining balance. Who paid the least amount of money for his PlayStation repair and how much less did he pay?

Answers

saharat paid the least, $1.20

Point A is 28 inches away from the center of the fan. How far does point A on the fan travel when the fan blades make one full revolution?

A.
168 inches

Answers

Umm did you need help or

help with b pleaseeeee

Answers

Answer:

Yes there is because the tanks get closer later in

Step-by-step explanation:

yes is the correct anwser

I NEED HELP FAST! Find the surface area. Round your answer to the nearest tenth if necessary.

Answers

9514 1404 393

Answer:

  a.  1,128.8 m²

Step-by-step explanation:

The total surface area is the sum of the areas of the two identical triangular bases and the areas of the lateral rectangles.

The two bases together have an area of ...

  A = 2(1/2)(bh) = (10 m)(14 m) = 140 m²

__

The lateral area is the product of the prism height and the perimeter of the triangular base.

  LA = Ph = (10 m + 14 m + 17.2 m)(24 m) = (41.2·24) m² = 988.8 m²

Then the total area is ...

  base area + lateral area = 140 m² +988.8 m² = 1128.8 m²

The total surface area of the prism is 1128.8 m².

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