Roberto is 14 years older than Tre. Five years ago, the sum of their ages was 28. How old are they now?
Answer: Roberto is 26 years old and Tre is 12 years old.
Step-by-step explanation:
Let T=age of Tre
14+T=age of Roberto
14+T+T=28
14+2T=28
2T=14
T=7(Tre’s age 5 years ago)
14+T=14+7=21(Roberto’s age 5 years ago))
7+5=12 years old
21+5=26 years old
To check:
26-12=14
So Roberto is 14 years older.
If cos 0 = 3/5
and angle 0 is in Quadrant IV, what is the value of tan 0 ?
Tan =
Answer:
-4/3.
Step-by-step explanation:
cos O = 3/5
Using Pythagoras to find the length of the side opposite the angle O:
As the cos of O is adjacent/ hypotenuse, Hypotenuse = 5 , adjacent side = 3 so
opposite side. = sqrt(5^2 - 3^2) = sqrt 16
= 4.
Now the tangent is negative in Q IV so
tan O = opposite / adjacent side = -4/3
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There are 12 boys and 15 girls in a class.
One boy and one girl will be selected to represent the class on the student
council.
Work out the total number of ways of choosing a boy and a girl.
(2 marks)
Answer:
180
Step-by-step explanation:
For each boy you choose, you choose one of the 15 girls.
This is the counting principle.
12 * 15 = 180
Answer: 180
The number of donuts produced by a machine is directly proportional to the time the machine runs . The machine produces 380 donuts in 20 minutes . How many donuts can the machine produce after running for 45 minutes?
Answer:
855 donuts
Step-by-step explanation:
380/20 = 19 donuts per minute
19 × 45 = 855
WILL GIVE BRAINLIEST AND 20 POINTS!
To prevent fraying, a binding is attached to the outside of a circular rug whose radius is 3 ft. If the binding costs $1.35 per foot, find the cost of the binding. Use 3.14 for . (Round your answer to the nearest cent.)
$
Answer:
$4.71
Step-by-step explanation:
you would multiply the radius times pi (you would get 6.42 ft) and then divide that by 1.35 (simplifying it to 642 divided by 135 and you would then get 4.706...)which rounds to the answer
The lines represented by the equations y
3x + 5 and 5y– 15x = -10
are?
Answer:
#1 - y (0, 5) x (1, 8)
#2 - y (0, -2) x (1, 1)
(things in brackets are coordinates for the line)
Step-by-step explanation:
hope that helps :)
Which statement best describes the area of Triangle ABC shown below?
А
с
00
(5 points)
O It is twice the area of a square of side length 4 units.
O It is one-half the area of a square of side length 4 units.
It is twice the area of a rectangle with sides 4 units x 3 units.
It is one-half the area of a rectangle with sides 4 units x 3 units.
Answer:
Would be the 3rd one I believe
Step-by-step explanation:
The statement that is true is:
It is one-half the area of a rectangle with sides of 4 units x 3 units is true.
What is a triangle?A triangle is a 2-D figure with three sides and three angles.
The sum of the angles is 180 degrees.
We can have an obtuse triangle, an acute triangle, or a right triangle.
We have,
The area of the triangle.
= 1/2 x base x height
Now,
Base = 4 units
Heights = 3 units
So,
Area = 1/2 x 4 x 3 = 6 units²
Now,
It is twice the area of a square of the side length of 4 units.
6 units² < 16 units²
This is not true.
It is one-half the area of a square of side length 4 units.
1/2 x 16 units² = 6 units²
8 units² = 6 units²
This is not true.
It is twice the area of a rectangle with sides 4 units x 3 units.
2 x 12 units² = 6 units²
24 units² = 6 units²
This is not true.
It is one-half the area of a rectangle with sides 4 units x 3 units.
1/2 x (4 x 3) units² = 6 units²
6 units² = 6 units²
This is true.
Thus,
It is one-half the area of a rectangle with sides of 4 units x 3 units is true.
Learn more about triangles here:
https://brainly.com/question/25950519
#SPJ7
Work out m and c for the line:
y = X – 2
help pls all questions are in the photo
will give brainliest
Find the value of x
This is very important pls help zoom in if you can’t see will really appreciate your help
I got you! Just tell me what the zoom login is so I can help
The right triangle below is formed by squares A, B, and, C. Square A has an area of 9 meters and Square C has an area
of 16 square meters. What is the area of Square B?
A.) 6 square feet
B.) 18 square feet
C.) 5 square feet
D.) 25 square feet
Answer:
I think it's 18 square feet
PLEASE HELP! I WILL GIVE BRAINLIEST!
A
B
C
D
Answer:
Option B
Step-by-step explanation:
The number line divided in 10 parts in between 0 and 1
The 0.45 is represented by point B
Answer:
It's B miss.
Step-by-step explanation:
Classify the triangle with the following sides: 7, 10, 12
Answer:
scalene triangle i guess the spelling is wrong
Step-by-step explanation:
Answer:
Scalene triangle
Step-by-step explanation:
This is the correct spelling lol
can you help me please
Answer:
GFKSKKGKKSFG
Step-by-step explanation:
For his mother's birthday, Paulo wants to enlarge a 3- by 5-inch photo to an 18- by 30- inch photo. what is the scale factor of the dilation?
Answer:
6
Step-by-step explanation:
It is a 6 inch scale factor because if you multiply 5x6 you would get 30 and if you multiply 3x6 you would get 18 so 6 is the answer.
How do you find the perimeter of any closed figure?
Answer:
add the lengths of each side of the shape. If there are units, include units in your final result.
Step-by-step explanation:
add the lengths of each side of the shape. If there are units, include units in your final result.
Answer:
add up all of the sides. hope this helps!
Step-by-step explanation:
Perimeter is a one-dimensional measurement that represents the distance around a closed geometric figure or shape (no gaps). To find perimeter, add the lengths of each side of the shape. If there are units, include units in your final result.
solve for x 4x - 3 = 6x + 2 ?
Answer:
x = -5/2
Step-by-step explanation:
i need help with geometry !
Answer:
157 degrees.
Step-by-step explanation:
If lines are parallel, then alternate exterior angles are congruent.
NEED HELP EMERGENCY ‼️
Answer:
A. Reflect across the y-axis
Step-by-step explanation:
if the negative sign was outside the radical then it would've been a reflection on the x-axis.
-6x+y=4
-y-2x=4
Please Solve these in
Y=mx+b form! I’m stuck...
Example 6: The area of a rectangle is 3.6 meters. Th
base of the rectangle is 3 meters. Which equation
can be used to find h, the height of the rectangle?
PLEASE HELP
A. 3.6 + h = 3
B. 3.6 = 3h
B. 3.6 = h - 3
D.3.6 = 4
Answer:
B. 3.6 = 3h
Step-by-step explanation:
Area of rectangle formula :-
A = L × W
3.6 = 3 × W OR the answer choic it gave is 3.6 = 3h.
Hope this helps, thank you !!
The graph shows the relationship between the radius and volume for many cones whose height is 6 inches. Select ALL true statements about such cones.
Answer:
E. If the radius of the cone is 2 inches, the volume of the cone is 25 cubic inches.
B. The relationship between radius and volume is not linear.
Step-by-step explanation:
The true statement regarding the cones should be
If the radius of the cone is 2 inches, the volume of the cone is about 25 cubic inches.
The relationship between radius and volume is not linear.
What is the volume of cone?
The volume of the cone should be equivalent to one-third of the volume of the cylinder that contains a similar radius of the base and height. Here V means the volume, r means the radius and h means the height.
According to the graph, we can say that in the case when the radius should be 2 inches so the volume should be 25 cubic inches. And, the relation between the radius and the volume should not be linear.
learn more about cone here: https://brainly.com/question/10710386
My soccer team has 16 players. I have to choose a starting lineup of a goalie and 10 regular players (the regular players are interchangeable). How many different starting lineups can I choose?
Answer:
48048
Step-by-step explanation:
Total number of players = 16
Selection to be made :
1 goalie ; 10 players
Hence ;
Choosing 1 goalie from 16 players :
16C1
Choosing 10 players from the remaining (16 - 1), 15 players
15C10
Hence,
16C1 * 15C10
16 * 3003
= 48048
In which quadrant angle k lies, if tan k<0, an csc k >
Your answer:
A. Q11
B. Ql
C. QV
D. QIII
Answer:
A. QII.
Step-by-step explanation:
The tan < 0 in Quadrants 2 and 3.
The csc > 0 in Quadrants 1 and 2.
Marcus is building a fence around his rectangular backyard. The length of his backyard is 75 3/4 ft, and the width is 81 1/4 ft. If the fence is 3/4 finished, how much fencing is left to complete?
Answer:
Step-by-step explanation:
Answer:
4,923.75ft²
Step-by-step explanation:
The area of the backyard = Length * width \
Area of the backyard = 75 3/4 * 81 1/4
Area of the backyard = 303/4 * 325/4
Area of the backyard = 6,154.6875ft²
If 3/4 of the fence is finished, the area of the finished part is expressed as;
Finished part = 1/5 * 6,154.6875
Finished part = 1,230.9375ft²
Part left unfinished = 6,154.6875-1,230.9375
Part left unfinished = 4,923.75ft²
Answer: 235.5
Step-by-step explanation:
75 3/4= 75.75 (L). 81 1/4= 81.25 (W)
Perimeter= 314 3/4 of 314 is 235.5
Write an equation of a line that passes through the point (1, 2) and is perpendicular to the line y=-1/4x+2
Answer:
y = 4x - 2 would be the equation
Help me please :(:(:(:):):):):):
Answer:
c) -6
Step-by-step explanation:
50 + 90 + (x+46) = 180 (angle sum property)
186 + x = 180
x = 180 - 186 = -6
I hope im right!!
***HURRY IM TAKING A TIMED TEST***
*** WILL MARK BRAINLEST***
Given f(x) = -5x + 4 and g(x) = x^4, choose the expression for (fºg)(x).
Answer:
f(x^4)=-5x^4+4
Step-by-step explanation:
Set up the composite function and evaluate.
Walmart is selling 100 mL tubes of toothpaste for $1.79 or 150 mL of toothpaste for $2.19. Which is the better buy?
Answer:
1.79/100mL = 0.0179
2.19/150mL = 0.0146
so, look at the end numbers
0.0179
0.0146
0.0146 is less than 0.0179
soo, $2.19 / 150mL = 0.0146 is the better buy...
can i be brianiest...