Pretty simple question, but how the hell am I supposed to know whether to put an addition sign or a subtraction sign.
Answers
Answer:
you must remember + and + equal to minus
Related Questions
pleaseeeee I needdd help, please
find x value using the quadrants
sinx = ( - sin²x + cos²x)
Answers
Answer:
Step-by-step explanation:
sin²x+cos²x = 1. No Matter What is the value of x. For Explanation: Sin x is opposite_side/hypotenuse of a Right angle triangle. Cos x is adjacent_side/hypotenuse of a Right angle triangle.
A bus and a car both drive 145 miles from town A to town B. The bus drives 8 miles per hour faster than the car. If it takes the car 2 hours and 54 minutes to arrive, how long does it take for the bus to arrive?
Answers
Answer: 2.5 hours
Step-by-step explanation:
Given
Distance between A to B town is [tex]d=145\ miles[/tex]
Bus speed is 9 miles per hour faster than car
time taken by car is 2 hours and 54 minutes i.e.
[tex]t=2+\dfrac{54}{60}=2+0.9=2.9\ hr[/tex]
Speed of car is v
[tex]\Rightarrow v=\dfrac{d}{t}=\dfrac{145}{2.9}=50\ mph[/tex]
Speed of bus is [tex]v+8=50+8=58\ mph[/tex]
time taken by bus is t'
[tex]\Rightarrow t'=\dfrac{d}{v+8}=\dfrac{145}{58}=2.5\ hr\\\\\\\Rightarrow t'=2\ hr\ \text{and}\ 30\ \text{minutes}[/tex]
The width of a rectangle is 7 feet and the diagonal legnth of the rectangle is 11 feet. Which measurement is closest to the length of this rectangle in feet?
Answers
Answer:
8.49 feet
Step-by-step explanation:
Characteristics of a rectangle
A rectangle is a quadrilateral It has two parallel sides the diagonals of a rectangle bisect each other and they are equal in lengthOne diagonal of a rectangle divides a rectangle into two right angled triangles. Thus, the length of the rectangle can be determined using the Pythagoras theorem
The Pythagoras theorem : a² + b² = c²
where a = length = ?
b = width = 7
c = diagonal = 11
7² + a² = 11²
49² + a² = 121²
a² = 121 - 49
a² = 72
calculate the square root of 72
a = 8.49 feet
Answer:
8.49 feet
Step-by-step explanation:
10 and
In acute triangle ABC, side b = 12, side c =
mLA = 42. Find side a.
Answers
Answer:
20
Step-by-step explanation:
I'm not completely sure, however.
12+10 = 22
42-22 = 20
The temperature at 5:30 A.M. was recorded as 7 degrees below zero on the Fahrenheit scale. Write the temperature using a signed number
Answers
Answer:
mhhm yea this is very questioned questioned
Step-by-step explanation:
yea mhm
Crystal's soccer team won 14 of the 20 games they played last season. What percent of games played did they win?
Answers
Answer:
70%
Step-by-step explanation:
hooe this helps plz follow ❤❤
Ms. F arrived at the Wizarding World of Harry potter at 9:12 am. It took her 1 hour and 16 minutes to get there from leaving her house. What time did she leave her house?
Answers
Answer:
She left her house at 7:56 am
Step-by-step explanation:
An animal trainer at the aquarium
trains bottlenose dolphins to jump
for performances. One dolphin
jumped out of the water at a height
of 15 feet and then dove back under
the water to a depth of 20 feet. Write
an expression to represent the vertical
distance the dolphin traveled. What is
the vertical distance?
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Answer:
15 up plus 20 down= 35 feet.
Step-by-step explanation:
15+20=35
What is the GCF of 28x3 and 28x5?
Answers
Answer:
28x^3
Step-by-step explanation:
Can someone plz help me on this plz
Answers
Which graph below shows the rule: output = 5 times input?
Answers
Given:
Output = 5 times input
To find:
The graph for the given statement.
Solution:
We know that, y-axis represents the output and x-axis represents the input.
Let y be the output and x be the input. Then the given statement can be written as
[tex]y=5x[/tex]
Here, the slope of the line is 5 because the value of [tex]m[/tex] is 5 on comparing the equation with [tex]y=mx+b[/tex].
It means the line is steeper because the vertical change is greater than the horizontal change.
Therefore, the correct option is A.
Determine the radius of the circle below.
Answers
Answer:
r = 22.629
Step-by-step explanation:
Using the Pythagorean theorem:
(35 + r)² = 53² + r²
1225 + 70r + r² = 2809 + r²
subtract r² from each side of the equation:
1225 + 70r = 2809
subtract 1225 from each side:
70r = 1584
r = 22.629
Expand and simplify 4(2p+7)+6(8q-2)
Answers
Answer:
8 p + 48 q + 16
Step-by-step explanation:
Please help really struggling..... Need the grade and just answer the question and not for just the points, no links!!!! Marking brainliest!!!!!
Answers
Answer:254.47 I think
Step-by-step explanation:
Question 13 (1 point)
(07.05 MC)
What is the solution to the equation 4x + 2(x - 2) = 4x + x - 12? (1 point)
O 1) -8
2) -1
3) 1
04) 8
Answers
Answer:
-8
Step-by-step explanation:
4x+2(x-2)=4x+x-12
4x+2x-4=5x-12
6x+2x-4=5x-12
x-4=-12
x=-8
Need help with this question.
Answers
Answer:
D.
Step-by-step explanation:
the smallest angle correpsonds with the smallest side, and longest angle with longest side. hope it helped
I only need answer for part A.
Answers
Answer:
y= 1/6 x - 1 1/2
p-by-step explanation:
Answer:
[tex]y=\frac{1}{6} x - 1\frac{1}{2}[/tex]
Step-by-step explanation:
have a great day :D
Please help with explanation.
Answers
Answer:
hope help you stay happy
The area of a sector is. What does the variable n represent?
Answers
the number of degree in the central angle
N is the degree of the central angle of the sector.
What is sector in an angle?The sector angle is the angle subtended between two radii of circle to the center of Circle.
If the radius of the circle is 10 inches, and the central angle of the sector is 90 degrees, the area of the sector can be found as follows:
90/360 * (3.14 * 10^2).
Following the order of operations, the equation proceeds as follows:
1/4 * (3.14 * 100) = 1/4 * 314 = 78.5.
Thus, the area of the sector is 78.5 square inches.
The formula to find the area of a sector is A = N/360 x (pi x r^2).
A sector is a section of a circle. In the formula given, A is the area of the sector,
N is the degree of the central angle of the sector, pi is an irrational number that can be rounded to 3.14, and r is the length of the radius of the circle.
Hence, N is the degree of the central angle of the sector.
Learn more about sector:
https://brainly.com/question/15591260
#SPJ2
Samuel is a teacher and takes home 75 papers to grade over the weekend. He can grade at a rate of 7 papers per hour. How many papers would Samuel have remaining to grade after working for 8 hours?
Answers
Answer: 19
Step-by-step explanation:
75 papers need to be marked
He grades 7 papers per hour
To find out how many paper he graded in 8 hours:
7 x 8
(7 is the number of papers graded in an hour)
(8 is the number of hours)
7 x 8 = 56
(56 is the number of papers he graded in 8 hours)
Now, there was a total of 75.
To find the remaining number of test sheets:
75 - 56
(75 is the total number of papers)
(56 is the number of papers graded)
75 - 56 = 19
Therefore, there are 19 papers remaining to grade.
Drew's car weighs 1,344 kilograms. His car weighs 7 times as much as his motorcycle. How many grams does his motorcycle weigh? Note: 1 kilogram = 1000 grams
Answers
Answer:
192,000 grams
Step-by-step explanation:
turn 1,344 kilograms to grams, which gives u 1344000 grams
divide 1344000 by 7 and you get 192,000 grams. Hope this helped :)
determine the total surface area.
Answers
Answer:
it should be 288
Step-by-step explanation:
i got the last one wrong , pls give me the right answer i need atleast a 75%
Answers
What is the vertex for the parabola shown?
A) (1.2)
B) (2,1)
C) (0.1.5)
D) (-1,3)
Answers
Answer:
the answer is B
Step-by-step explanation: Its B because the vertex is in the middle
Can someone teach me how to solve this
Answers
28.9
Step-by-step explanation:
Multiply the denominator by the number on the other side. This will give you 28.9 as t. To check your work, divide 28.9/8.5. This will give you 3.4.
On a boat tour, there are half as many children as there are adults. There are 30 people on the tour.
Answers
Answer:
I dont know your question. But, im guessing how many children are there. There are 15 children on the boat tour.
Step-by-step explanation:
Half of 30 is 15.
Answer:
hay15 niños
Step-by-step explanation:
Todd uses white tiles and some black tiles to make mosaic the mosaic has a total area of 144 square centimeters each tile has an area of 3 square centimeters how many black tiles did Todd use
Answers
Answer:
27 tiles
Step-by-step explanation:
Here is the complete question :
Todd uses 21 white tiles and some black tiles to make a mosaic.the mosaic has a total area of 144 square centimeters. Each tile has an area of 3 square centimeters. How many black tiles did Todd use
Steps to take to determine the answer
Determine the total area of the white tiles used. This can be determined by multiplying the number of white tiles by the area of a tilesubtract the area of the white tiles from the total area of the mosaic. Divide the answer derived in the previous step by 3Area of the white tile = area of each tile x total white tiles used
3 x 21 = 63cm²
144cm² - 63cm² = 81cm²
Number of black tiles used = 81cm² / 3cm² = 27 tiles
please help due pretty soon
Answers
Answer:
C. y - 1 = 5( x - 8)
Step-by-step explanation:
Since line is passing through (8, 1) and has a slope 5.
So, the equation of line in point slope form is given as:
y - 1 = 5( x - 8)
Answer: C
Step-by-step explanation:
How many arms do a 6 starfish have?
Answers
So 30 is the answer
Hope this helps
NEED HELP ! PLEASE HELP ASAP !
Answers
Answer:
distance between points is 5.6568...
when you round it will be 5.7
answer is 5.7
Step-by-step explanation:
find the distance between two points using distance formula