Answer:
the answer is x=−10
Step-by-step explanation:
hoped I helped:)
(answer asap pls) A bank of 8 floodlights together uses 1000 watts of power. How much power is used by each bolt? explain
The slope of a direct variation function is -4. What is the equation of the function?
y = 4 x
y = - 1/4 x
y = -4 x
y = x - 4
Answer:
y = -4 x
Step-by-step explanation:
what is 6+89-34X12 CASLAN
Answer:
hjyuojhgfdsa
Step-by-step explanation:
Answer:
the answer is 313
Step-by-step explanation:
Based on the table, what is the unit rate for one gallon of gasoline?
Gasoline
Number of gallons
Price
2
$6.60
3
$9.90
4
$13.20
$3.30
$4.60
$5.60
$6.50
Answer: 3:30 per gallon
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
what is the answer to this equation -12= -3y
y=4
Step-by-step explanation:
[tex]\tt{-12=-3y }[/tex] ⠀
[tex]\tt{ y=\dfrac{-12}{-3} }[/tex] ⠀
[tex]\tt{y=4 }[/tex] ⠀
!!! HELP ME !!!
i just need the four letter code !!!
solve each box using the answer choices on the side in the picture !
Answer:
DHGB
Step-by-step explanation:
Let's start with 1.
The equation is in standard form (ax+by=c): -4x+2y=8
we'll put it into slope intercept form.
Add 4x onto both sides
2y=4x+8
divide by 2
y=2x+4
Parallel lines have the same slope, but a different y intercept. (the line parallel to this one will have a slope of 2 but a y intercept different from +4)
Looking at the answer choices, the only choice with a slope of 2 is D (y=2x-5)
So the answer to 1 is D
Now 2.
we're given 3 points. One of the points crosses the y axis, which is the y intercept. In this case, the line crosses the point (0,3)
That means the y intercept of the line is (0,3)
here's the line so far:
y=mx+3 (m is a placeholder for the slope)
when given a graph, we can use rise/run. Starting from the point (3,2), we can move 3 spaces to the left, and one up.
In a graph, if you move to the left or downwards, it's a negative move. If you move up or to the right, it's a positive move.
Since we went 1 space up (rise) and 3 spaces to the left, (run) the slope is -1/3
So the line is y=-1/3x+3
Perpendicular lines are negative and reciprocal. If you multiply their slopes, they will equal -1. Their y intercepts don't matter at all.
So to find the slope, we can use this equation.
-1/3m=-1
multiply by -3 on both sides
m=3
Looking at the answer choices, H is the only answer with a slope of 3. So the answer to 2 is H.
Now, 3
You can do the graph method like above for 2, but I'll just calculate the slope.
We're given two points, (-1,-2) and (0,2)
the formula for slope is (y2-y1)/(x2-x1)
we can label the points.
x1=-1
y1=-2
x2=0
y2=2
now, substitute into the equation.
m=(2--2)/(0--1)
m=4/1
the slope is 4.
Now let's use point slope form, which is y-y1=m(x-x1)
once again, sub. into the equation.
y+2=4(x+1)
do distributive prop
y+2=4x+4
subtract by 2
y=4x+2
As said above, parallel lines have the same slope.
Looking at the answer options, G also has the slope of 4
so the answer to 3 is G
Finally, #4
Equation: 3x+y=1
subtract 3x from both sides
y=-3x+1
As said above, perpendicular lines have slopes that multiply to equal -1.
-3m=-1
multiply by -1/3
m=1/3
so the slope of the line will be 1/3.
Looking at the answer options, B also has a slope of 1/3.
So the answer to 4 is B
The code is DHGB
Hope this helps!
What triangle doesn’t belong?
Answer: B does not belong with the others. The others are all right triangles, while B is an obtuse triangle. It might be wrong if they're looking for something different though.
Step-by-step explanation:
HELP DUE IN 20 MINUTES AND I HAVE MORE TO DO!!!!
Answer:
12 5/8 ft
Step-by-step explanation:
13 - 1 = 12
7/8 - 1/4 = 5/8
=12 5/8
Find the prime factorization of the number.
22
The prime factorization
Answer:
Step-by-step explanation:
22 into 2 and 11
2 is already prime and 11 is already prime
What does the roller coaster gain as it goes down the hill?
A. Potential energy
B. kinetic energy
help plss
Answer:
kinetic
Step-by-step explanation:
it is using the energy
Answer: B. kinetic energy
Step-by-step explanation: i think this because kinetic energy is the spped of something for example a ball rolling down a hill is kinetic energy
It's fear has a radius of 4 inches in a cube shaped box has an edge length of 7.5 inches JD says the box has greater volume so the sphere will fit in the box is he correct
Answer:
JD is wrong.
Although, the volume of the cube shaped box V' = 421.88 in³ > volume of the sphere V = 268.1 in³, the sphere cannot fit into the box because its diameter, d = 8 in > side of cube = 7.5 in.
Step-by-step explanation:
The sphere would only fit into the cube shaped box if its diameter is less than the length of side of the cube L = 7.5 inches.
So, diameter of sphere d = 2r where r = radius of sphere = 4 inches. Thus, d = 2r = 2(4 in) = 8 in.
Since the diameter of the sphere d = 8 inches > length of side of the cube = 7.5 inches, the sphere would not fit into the box.
So, JD is wrong.
We calculate both the volume of the sphere and cube.
Volume of a sphere V = 4πr³/3 where r = radius of sphere = 4 inches
So, V = 4πr³/3
= 4π(4 in)³/3
= 4π(64) in³/3
= 256π in³/3
= 804.25 in³/3
= 268.1 in³
Volume of a cube V' = L³ where L = length of side of cube = 7.5 inches
So, V' = L³
= (7.5 in)³
= 421.88 in³
Although, the volume of the cube shaped box V' = 421.88 in³ > volume of the sphere V = 268.1 in³, the sphere cannot fit into the box because its diameter, d = 8 in > side of cube = 7.5 in.
-5 1/2+ 6 3/4+ (-4 1/4) =
Please help? 5) 120 = 4(-6+6n)
Answer:
n=6
Step-by-step explanation:
6. The base of a triangular field is three times its height. If the cost of cultivating the field
at 36 per hectare is? 486, find its base and height (1 hectare = 10000 m²).
Answer:
base = 519.62, height = 173.21 m
Step-by-step explanation:
Let the base and height of the triangle be represented by b and h respectively.
Thus,
b = 3h
Area of a triangle = [tex]\frac{1}{2}[/tex] x base x height
For the given triangle,
area = [tex]\frac{1}{2}[/tex] x b x 3h
= [tex]\frac{3}{2}[/tex]bh
Area of the triangle = [tex]\frac{3}{2}[/tex]bh
To determine the number of hectares,
36 per hectare = 486
hectare = [tex]\frac{486}{36}[/tex]
= 13.5
numbers of hectares = 13.5
Area of the hectares = number of hectares x 10 000 m²
= 13.5 x 10 000
= 135000
Total area of the hectares = 135 000 m²
So that,
area of the hectares = area of the triangle
area of the triangle = [tex]\frac{3}{2}[/tex]bh
135 000 = [tex]\frac{3}{2}[/tex]bh
270000 = 3bh
bh = [tex]\frac{270000}{3}[/tex]
= 90000
bh = 90000
But, b = 3h
3h x h = 90000
3[tex]h^{2}[/tex] = 90000
[tex]h^{2}[/tex] = [tex]\frac{90000}{3}[/tex]
= 30000
h = [tex]\sqrt{30000}[/tex]
= 173.2051
h = 173.21 m
So that,
b = 3 x 173.2051
= 519.6153
b = 519.62
Therefore, the base of the triangle is 519.62 m, while the height is 173.21 m.
In a high school, 28% of the students are freshmen 26% are sophomores 22% are juniors and 24% are seniors then enrollment in the school is 1600 students how many freshmen’s are there than juniors
Answer:
96
Step-by-step explanation:
First we can express in numbers how many students are freshman :
(28:100)=0.28 (percent into integer)
Then we multiply this number with 1600
1600*0.28=448 (this is the number of freshman)
Now we do it again with the number of juniors
(22:100)=0.22
1600*0.22= 352
Now we only subtraction these two numbers
448-352= 96
So we now know that there is 96 more freshmens than juniors
look at the pic and please help me
Answer:
so 8 squared is 64 but when you do 2 cubed its 8
is this what you wanted?
Elena starts her new job working at an office supply store. She works for 6 hours and makes a total of $54.
Which equation is set up correctly to determine how much Elena makes per hour (h)?
6h = 54
6, h , = 54
54h = 6
54, h , = 6
h + 6 = 54
h , + 6 = 54
54 – h = 6
PLEASE HURRY
Answer:
I believe the answer would be A.
Step-by-step explanation:
A says 6 x h is 54.
^ ^ ^
important!
6 is the number of hours.
h is how much money made per hour.
54 is the total after working 6 hours.
6х +8y - 9x + 2y
helpp
Answer: -3x+10y
Step-by-step explanation:
Just add the like terms
6x-9x=-3x
8y+2y=10y
The equation then simplifies to -3x+10y
12. Which of the following is a quadratic equation?
(1) x2 + 6 = 0
(2) 28-10 = 15
(3) 2r-32 = 2
(4) r+2 =10
Taylor plans to borrow $4500 from the bank to purchase a used vehicle if he borrows the money at the rate of 4% interest for two years what is the total amount we will have to pay back to the bank
Answer: $ 4860
Step-by-step explanation:
Formula : Amount = P (1+rt) , P = principal value , r= rate of interest , t= time
Given ; P= $4500 , r = 4% = 0.04 , t = 2years
Total amount we will have to pay back to the bank = [tex]4500(1+0.04\times 2)[/tex]
[tex]=4500(1+0.08)\\\\=4500(1.08)\\\\=\$ 4860[/tex]
Hence, the total amount we will have to pay back to the bank = $ 4860
Oder the least to greatest: -3, -10, -1 please helppp
From least to greatest: -10, -3, -1
Which of the following is the quotient of the rational expression 4x/2x-1 divided by 3x+2/x+5
Answer:
Step-by-step explanation:
Answer:
4x^2+20x/6x^2+x-2
Step-by-step explanation:
I'm cracked
find p if 45 :72=72 40:p
Help please! Ty! Ratios
Answer:
Ratios to roses to lilies....6:9
Reduced.....2:3
Step-by-step explanation:
Pretty simple doesn't need explaining
In a basketball game, Ty'rik make 20 of 28 baskets. What percentage of the shots did he make? Round to the nearest whole number. A. 20% B. 28% C. 1% D71%
Step-by-step explanation: depending on where he made the shots imma have to go wit B
Identify the slope and y intercept of the following equation: y = -1/2x - 3
Answer:
Slope: -1/2
Y-Intercept: (0,-3)
Step-by-step explanation:
y=mx + b
m is the slope, b is the y-intercept
What is the approximate diameter of a sphere with a volume of 268 cm3
Answer:
d≈8cm
Step-by-step explanation:
Answer:
8cm
Step-by-step explanation:
Ap3x
What is the area of the shape shown above
Answer:
the area is 286
pls mark as brainlist
Answer:
476 ft^2
Step-by-step explanation:
Area of the square:
Formula: L x W
13 x 22 =
286
Area of Semi-Circle:
Formula: 1/2(πr^2 )
1/2 (π11^2)
=190
Area of square + Area of Semi Circle
=476 ft^2
HELPPppp!!! uhhhhhhhh......
Given:
The triangle PQR on a coordinate plane.
To find:
The image of point Q after a rotation of 90° counterclockwise about the origin.
Solution:
From the given graph, it is clear that the coordinates of point Q are (5,0).
If the figure is rotated 90° counterclockwise about the origin, then the rule of rotation is defined as
[tex](x,y)\to (-y,x)[/tex]
Using this rule, we get
[tex]Q(5,0)\to Q'(-(0),5)[/tex]
[tex]Q(5,0)\to Q'(0,5)[/tex]
So, the image of point Q is (0,5).
Therefore, the correct option is (a).
Find the slope of the line that goes through the two points.
(6,7) (-2,11)
Answer:
-1/2
Step-by-step explanation:
The equation for slope is (y2-y1)/(x2-x1).
Plug in the values given in the problem
(11-7)/((-2)-6)
Then simplify
4/(-8)=-1/2