Answer:
x=? y=?
5x+y=21 equation 13x+y=13y=13-3x
y=13-3x in equation 15x+(13-3x)=21
5x+13-3x=21
2x+13=21
2x=21-13
2x=8
x=8/2
x=4
x=4 in equation 15(4)+y=2120+y=21
y=21-20
y=1
What is 3/8 +5/12? I need help :>
Answer:
19/24
Step-by-step explanation:
3/8+5/12
3*3/8*3+5*2/12*2
9/24+10/24
9+10/24
19/24
90% OFF original price!
Eric wants to buy a chandelier. The original price is $90. What is the sale price?
$
90% of $90 is $81, so therefore the sale price (original price - percentage) would be $9.
Question 7 Elijah is planning a circular flower garden with a 12 foot diameter. He will put plastic edging along the flowerbed. How many feet of edging will Elijah need to enclose his flower garden? Round to the nearest tenth place. (Use 3.14 for pi)
If you don't know please don't try and help.
Answer:
37.7 ft
Step-by-step explanation:
c=πd (circumference= 3.14*diameter)
c=3.14*12
c=37.68 ft
rounded to tenths place-37.7 ft
In A ABC, m ZA = 36°, m ZB = 45°, and m ZC = 99º. Which statement
is true?
A. CA > BC > AB
B. BC > CA > AB
C. AB > BC > CA
D. AB > CA > BC
Answer:
The true statement is AB > CA > BC ⇒ D
Step-by-step explanation:
In any triangle, the longest side in length is the opposite to the greatest angle in the measure, and the shortest side in length is opposite to the smallest angle in the measure.
Let us solve the question
∵ ABC is a triangle
∵ m∠A = 36°
∵ m∠B = 45°
∵ m∠C = 99°
→ That means C is the greatest angle and A is the smallest angle
∴ ∠C is the greatest angle and ∠A is the smallest angle
∴ The arrange of the measures of the angles is m∠C > m∠B > m∠A
∵ AB is the opposite side of ∠C
∴ AB is the longest side
∵ BC is the opposite side of ∠A
∴ BC is the shortest side
∵ CA is the opposite side of ∠B
∴ The arrange of the lengths of the sides is AB > CA > BC
∴ The true statement is AB > CA > BC
A football coach moves 12 m north, then 16 m south, then 22 m north, and finally 6 m
south.
What is the displacement
Answer: Displacement=12 m north
Step-by-step explanation:
12 m north
Let’s assume
north= positive
south=negative
12+(-16)+22+(-6)=12
Find the value of 17.64
Answer:
4.2
Step-by-step explanation:
A park volunteer plans to work on the park's stone walls for 1 hour every Monday, 1 hour every
Wednesday, and 3 hours on Fridays. The graph shows the number of hours he plans to work for a
given number of weeks. Complete parts a through c.
Answer:
The answer is below
Step-by-step explanation:
A linear graph has an equation in the form y = mx + b, where y and x are variables, m is the slope of the line and b is the y intercept (that is value of y at x = 0).
a) y represent the number of hours worked and x represent the number of weeks. The points are represented in the form (x, y).
First we can find the slope of the line by picking two points from the graph. Let us use (0, 0) and (2, 10). The slope m is given as:
[tex]m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{10-0}{2-0} \\\\m=5[/tex]
The slope and constant of proportionality is 5.
b) The equation can be gotten using the points (0, 0) and (2, 10). Therefore:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\y-0=\frac{10-0}{2-0}(x-0)\\\\y=5x\\\\[/tex]
c) In 16 weeks (i.e. x = 16):
y = 5x
y = 5(16)
y = 80 hours
A runner has a mass of 89 kg he produces aforce of 84 Newtons between the ground and his running shoes How fast does he accelerate
Force = mass × acceleration
acc= force / mass
84N/89kg
= 0.94m/s
The acceleration of the runner is 0.9 m/[tex]s^{2}[/tex].
We have a runner has a mass of 89 kg he produces a force of 84 Newtons between the ground and his running shoes.
We have to determine the acceleration of the runner.
What is the formula to calculate the force on a body ?The force on a body is the product of mass and acceleration. Mathematically -
F = ma
According to the question, we have -
Force = 84 N
Mass = 89 Kg
Therefore -
F = ma
84 = 89 x a
a = 84/89 = 0.9 m/[tex]s^{2}[/tex]
Hence, the acceleration of the runner is 0.9 m/[tex]s^{2}[/tex].
To solve more questions on Force, visit the link below-
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Find the explicit formula.
-6, -26,-46,-66, ...
Answer:
-20
Step-by-step explanation:
as you can see you can still see the 6s, whats the difference between 40 and 20? its 20, its like skip counting but negative, the answer couldve been "20" if it made the number go potitive but its negative so the answer is -20
(3x+23x +32) = (x+6)
Answer:
x = -26/25
Step-by-step explanation:
(3x+23x +32) = (x+6)
Combine like terms
26x +32 = (x+6)
Subtract x from each side
26x -x +32 = x+6-x
25x +32 = 6
Subtract 32 from each side
25x+32 -32 = 6-32
25x = -26
Divide each side by 25
25x/25 = 26/25
x = -26/25
X(x+7)=0 solve whatever this id
Step-by-step explanation:
x(x + 7) = 0
By Zero Product rule,
either x = 0 or (x + 7) = 0.
=> x = 0 or x = -7.
What is 287.7 round to the nearest hundredth
Answer:
287.70 because if u round to the nearest hundreds all u would have to do is add a zero.
I think it's 287.70
I will mark you brainiest if you can answer this
helpppppp it’s urgenttttttttt!!!!!
10. Use substitution to solve the system of equations below.
- x + 2y = 5
3x - 5y =-11
Answer:
the answer for y is 4 and x is 3
y=4
x=3
Please do this if multiple people answer I will give the best one brainliest
PLEASE HURRY WILL GIVE BRAINLIEST TO FASTES PERSON
Answer:
First is True Second is False Third is True Fourth is False and the last one is False
Step-by-step explanation:
Please give Brainliest
what is the unit price of $5.36 for 20 oz?
Answer:
5.36/20
0.268 dollars per oz
plz brainliest :)
do you want an explanation?
simplify 4a X 6b -3c
Juanita is buying a cover for her motorcycle which has a length of 7.5 feet if the covers are only sold in whole foot increments what size covers should Juanita buy
Answer:
Size of the cover should Juanita buy is 8 feet.
Step-by-step explanation:
Given: The length of the motorcycle is 7.5 feet.
To find: The size of the cover of motorcycle.
The length of the motorcycle is 7.5 feet. But the covers are only sold in whole foot increments.
So, Juanita should buy 8 feet long cover for motorcycle.
Please help me with this problem, I'll give brainliest!!
And if you want even more points can you go to my profile, then go to QUESTIONS then if you know the answer to the one underneath this one could you help answer it THANK YOU SO MUCH
Angela purchased a storage cube with a volume of 10 cubic feet. She wants to put it on a shelf that is 24 inches tall.
A.
Yes, because the height of the cube is approximately 4.93 inches.
B.
Yes, because the height of the cube is approximately 2.15 inches.
C.
No, because the height of the cube is approximately 25.85 inches.
D.
No, because the height of the cube is approximately 39.96 inches.
Answer:
c
Step-by-step explanation:
10 cubic feets volume is equivilant o 25.85 inches.
No, because the height of the cube is approximately 25.85 inches. Option C is correct.
What is volume?It is defined as a three-dimensional space enclosed by an object or thing. A cube's volume can be calculated using its side cube.
Given that, Angela bought a storage unit with a 10 cubic foot capacity. It will go on a shelf that is 24 inches tall,
Volume, V = 10 cubic feet
Height, h =24 inches
The volume of a cube is found as the cube of the side.
Volume of cube = side³
V=a³
10=a³
Take a cube root of 10 to find the value of a,
a=2.15 feet
We can convert feet into inches, in one foot there are 12 inches.
1 feet = 12 inches
2.15 feet = 2.15 × 12
2.15 feet = 25.85 inches
Thus, no because the height of the cube is approximately 25.85 inches. Option C is correct.
Learn more about the volume here:
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A must-have for any thrill seeker is a drop tower ride. The Precipice Plummet will stand 420 feet tall. The scale in your architectural diagrams is 1":40'. How tall will your drawing of Precipice Plummet be in inches? (do not include units in your answer, just the number
The answer is 10.5, but don't put 10.5 if it's just asking for the number and not the unit only put (10)!!!
Which is an equation of the line with a slope of 4 and a y-intercept of -2?
Answer:
y = 4x - 2
Step-by-step explanation:
Y-intercepts cross the y-axis at x = 0. So, we can plug (0 , -2) into an equation with m = 4.
-2 = 4(0) + b
-2 = b
y = 4x - 2
Solve the system of equations -30 + 7y = -18 and 4x – 4y = 8 by combining
the equations.
What is slope? Check all that apply.
Answer:
B, E, and F maybe
(1+3p)(1-3p)
the answer is 1-9p²
How do i get this though?
Step-by-step explanation:
[tex](a - b)(a + b) = {a}^{2} - {b}^{2} [/tex]
simplify the product and you get
[tex] {1}^{2} - (3p {}) {}^{2} [/tex]
1 times any power automatically equals 1. So that equals
[tex]1 - (3p) {}^{2} [/tex]
=
[tex]1 - 9p {}^{2} [/tex]
3 multiplied by what gives me 55.50
Answer:
18.5
Step-by-step explanation:
Divide 55.5 by 3 (working backwards to find your answer)
Then you will get 18.5!
Answer:
18.5
Step-by-step explanation:
divide 55.5 by 3 and you get 18.5.
John called a plumber to fix a leak in his bathroom. The
plumber charged $30 to come to the house and $25 an hour
while fixing the leak. If the final bill was $105, how many
hours was the plumber at John's house?
Answer:
3 hours
Step-by-step explanation:
$105 - $30 = $75
$75 ÷ $25 = 3 hours
What is the slop in the graph?
Answer:
-2/5
Step-by-step explanation:
rise/run you count how much it rises and how much it runs
Answer:
-2/5
Step-by-step explanation:
rise over run