Step-by-step explanation:
x =7-y
subs x in eqn 2
3(7-y)+y=15
21-3y+y=15
21-2y=15
21-15=2y
6=2y
y=6/2
y=3
Please help meeeee!!
Answer:
-27
Step-by-step explanation:
order of operations 2÷2 = 1 +53 =54
3x1 = 3 -5 = -2
54÷-2 = -27
If Mike walked 10 miles in two hours how many miles did he walk in one hour?
Answer:
5 miles
Step-by-step explanation:
10 miles in 2 hours
so the half in 1 hour; 5 miles
Help if right U GET ................. U KNO WAH
Answer:
a: 448 gallons
b: 5 fish
Step-by-step explanation:
Gabriel bought a dog crate shaped like a rectangular prism with the dimensions shown in the model 36x24x30
Answer:
25920
Step-by-step explanation:
you do lxwxh
Find the lateral area of this cone.
Leave your answer in terms of .
15in
12 in
LA = [ ? ]t in
Hint: Lateral Area of a Cone = mre
Where e = slant height
Given:
Radius of the base of the cone = 12 in.
The slant height of the cone = 15 in.
To find:
The lateral surface area of the given cone.
Solution:
The lateral surface area of the cone is:
[tex]LA=\pi rl[/tex]
Where, r is the radius of the base of the cone and h is the slant height of the cone.
Putting [tex]r=12,h=15[/tex], we get
[tex]LA=\pi (12)(15)[/tex]
[tex]LA=180\pi[/tex]
The lateral surface area of the cone is 180π in ² and the missing value for the blank is 180.
Answer:
Lateral is 180π
SURFACE AREA IS 340π
Step-by-step explanation:
Which graph represents a reflection of f(x) = 2(0.4)x across the y-axis? On a coordinate plane, an exponential function approaches y = 0 in quadrant 2 and increases into quadrant 1. It crosses the y-axis at (0, 2) and goes through (1, 5). On a coordinate plane, an exponential function decreases from quadrant 3 to quadrant 4 and approaches y = 0 in quadrant 3. It crosses the y-axis at (0, negative 2) and goes through (1, negative 5). On a coordinate plane, an exponential function decreases from quadrant 2 to quadrant 1 and approaches y = 0 in the first quadrant. It goes through the y-axis at (0, 2) and goes through (negative 1, 5). On a coordinate plane, an exponential function increases from quadrant 3 to quadrant 4 and approaches y = 0. It goes through (negative 1, negative 5) and crosses the y-axis at (0, negative 2).
The graph of g(x) is (a) an exponential function approaches y = 0 in quadrant 2 and increases into quadrant 1. It crosses the y-axis at (0, 2) and goes through (1, 5).
The function f(x) is given as:
[tex]f(x) = 2(0.4)^x[/tex]
The rule of reflection over the y-axis is:[tex](x,y) \to (-x,y)[/tex]
This means that:
[tex]g(x) =f(-x)[/tex]
Substitute -x for x in f(x)[tex]f(-x) = 2(0.4)^{-x}[/tex]
Substitute the expression for f(-x) in the above equation [tex]g(x) =f(-x)[/tex][tex]g(x) = 2(0.4)^{-x}[/tex]
Hence, the graph of g(x) is graph (a)
Read more about function transformation at:
https://brainly.com/question/12619643
sovle for x , no links
Answer:
inequality form
[tex]x \geqslant - 3[/tex]
5.6^2 + 3.8^5 x 8.1^9 + 2.5^7
Help PLeAse
Answer:
1. Y=2
2.A=1.3
5.p=28/3
Step-by-step explanation: make me brainliest
I NEED HELP ( this is the semester review thingy and there just introducing me to angels, not even a lesson :( )
Find the measure of angle x in the figure below
35°
48°
69°
78°
Answer:
Step-by-step explanation:
So we know that a straight line adds up to 180 degrees.
This means that:
52+59+y = 180
y + 111 = 180
y = 69
We also know a triangle also adds up to 180 degrees.
This means that:
y+x+63 = 180
69+63+x = 180
x + 132 = 180
x = 48
pleaseeee please please
Answer:
Step-by-step explanation:
there are 32 student in a class 7 sun I'f the ratio of boys and girls is 5:3 find the number of boys and girla
Answer:
there are 20 boys and 12 girls
find the distance between the two points (-1,3) and (4,2) ?
Answer:
sqrt(26) units
Step-by-step explanation:
Use the formula d=sqrt((x2-x1)^2 + (y2-y1)^2). d is the distance, and (x1, y1) and (x2, y2) are the points.
d=sqrt((4-(-1))^2 + (2-3)^2)
=sqrt(5^2 + (-1)^2)
=sqrt(25+1)
=sqrt(26)
It tells to round to the nearest hundredth and to only use numbers and decimal points. Please help
Answer:
189.27 ft²
Step-by-step explanation:
Find the area of the rectangle, then the semi-circle, then add the sums.
1.) Rectangle ▭
║A = lw
║A = 10 ⋅ 15
║A = 150
2.) Semi-circle◗
║A = [tex]\frac{1}{2}[/tex](πr²)
║A = [tex]\frac{1}{2}[/tex](π ⋅ 5²)
║A = [tex]\frac{1}{2}[/tex](78.54)
║A = 39.27
3.) Adding sums +
║150 + 39.27 = 189.27
[Your answer should be 189.27 ft²]
Ted bought a fishing pole for $35.99, bait for $16.99, and a pair of shorts for $21.99. He had a coupon for 50% off the shorts only. What was the total cost of Ted’s items before tax?
Can y’all plz help I will mark u
Answer:
4/8
Step-by-step explanation:
7/8 - 3/8 - 4/8
4/8 + 3/8 = 7/8
n = 4/8
hope this helps
Find the volume of a box with dimensions: 5 ½ by 8 by
4 ½ inches..
Answer:
178 1/2 inches cube
Step-by-step explanation:
Volume = length * width * height
= 8 1/2 * 5 1/4 * 4
= 17/2 * 21/4 * 4
= 1428 / 8
=357/2
= 178 1/2 inches cube.
Given f(x) = 3x^3 -5x + k, and x-2 is a factor of f(x), then what is the value of k?
Answer:
-14
Step-by-step explanation:
Given f(x) = 3x^3 -5x + k, and x-2 is a factor of f(x), then what is the value of k?
This is an interesting question, since I have to think I have ever seen a question like this asked before.
3x³ - 5x + k i'll try dividing by x-2 and adjust k so there is no remainder
3x² + 6x + 7
x-2 | 3x³ + 0x² - 5x + k
3x³ - 6x
6x² - 5x
6x² - 12x
7x + k
7x - 14
0 remainder is 0 if k = - 14
when I graphed 3x³ - 5x -14 and (x-2)(3x² +6x +7) the graphs were equivalent
Given the figure below. What is the theorem or postulate that justifies triangle ABD congruent
to triangle CBD?
Answer:
SAS is the answer in my opinion
What is the area of the obtuse triangle below? 19 11 O A. 99 sq. units OB. 10 sq. units O C. 49.5 sq. units O D. 20.5 sq. units
answer:
C.49.5sq. units
explanation:
Sana makatulong
HELP ASAP!!? HELP ME PLEASE!! 10 POINTS
Answer:
D) 3x²y
Step-by-step explanation:
56 POINTS
Step 1: Analyze the graph.
Daredevil Danny takes a practice jump as shown on the graph below. Complete the steps to determine the equation for the parabolic trajectory of his practice jump.
⦁ What are the key aspects of any parabola? What do the key aspects tell you about the graph?
(5 points)
⦁ What are the key aspects of Daredevil Danny’s practice jump shown in the graph provided? Describe each value and how it is determined. (10 points)
Step 2: Solve for coefficient a.
⦁ What equation is used to find the vertex form of a parabola with the vertex (h, k)? (5 points)
⦁ Solve for the coefficient a in the vertex form for the parabola in Daredevil Danny’s practice jump using key aspects from step 1. As you solve for the coefficient, explain each step of the process in detail. (15 points)
⦁ What is the vertex form of the parabola from Daredevil Danny’s practice jump? (5 points)
Answer:
Step 1:
What are the key aspects of any parabola? What do the key aspects tell you about the graph?
(5 points)
0=a(4-24)^2+50
-50=a(4-24)^2
4-24
-20^2=400
-50=a(400)
-50=400a
-50/400=-0.125
a = -0.125
B.) What are the key aspects of Daredevil Danny’s practice jump shown in the graph provided? Describe each value and how it is determined. (10 points)
The roots and vertex, you can find the vertex by using vertex form y=a(x-h)^2+k. You find the roots by solving the quadratic equation.
Step 2: Solve for coefficient a.
a.) What equation is used to find the vertex form of a parabola with the vertex (h, k)? (5 points)
f(x) = a(x-h)^2 +k
b.) Solve for the coefficient a in the vertex form for the parabola in Daredevil Danny’s practice jump using key aspects from step 1. As you solve for the coefficient, explain each step of the process in detail. (15 points)
Not sure about this one...?
c) What is the vertex form of the parabola from Daredevil Danny’s practice jump? (5 points)
f(x)=-12/25(x-25)^2+32
The equation of Daredevil Danny's jump in vertex form is y = -0.32(x - 25)^2 + 32
The key aspects of the graphThe graph that completes the question is added as an attachment
These are the vertex and the intercepts of the graph.
The intercepts tell us about when the time of flight and the time of landing, while the vertex tell about the maximum height of Danny's jump.
From the graph, we have:
Vertex = (25,32)x-intercepts = 15 and 35The value of the coefficient aA quadratic function is represented as:
y = a(x - h)^2 + k
Where:
vertex = (h,k)
So, we have:
y = a(x - 25)^2 + 32
Substitute the value of the x-intercept
0 = a(15 - 25)^2 + 32
Subtract 32 from both sides
a(15 - 25)^2 = -32
Solve for a
a = -0.32
Hence, the value of the coefficient a is -0.32
So, the equation in vertex form is y = -0.32(x - 25)^2 + 32
Read more about quadratic functions at:
https://brainly.com/question/1214333
#SPJ6
[tex]\sqrt \frac18[/tex]
Step-by-step explanation:
[tex]\sqrt{1/8}[/tex]=[tex]\sqrt{1} /\sqrt{8}[/tex]
[tex]\sqrt{8} =2\sqrt{2}[/tex]
[tex]1/(2\sqrt{2} )[/tex]
if the denominator is a root then multiply itself by itself to get an integer
[tex]1(2\sqrt{2} )/((2\sqrt{2})(2\sqrt{2} ))[/tex]
[tex]\sqrt{2} /4[/tex]
Hope that helps :)
A bike trail is 2 2/5 miles long. Rosie rides her bicycle on the bike trail 4 days a week. How many miles does Rosie ride per week?
Answer: Rosie biked 9.6 miles per week because you do 2 2/5 times 4. 2 2/5 becomes 12/5 and you just times it by 4.
Hope it helps! :D
Given square JKLM, JK=9. Find JL
Answer:
answer is 18
Step-by-step explanation:
.................
Answer:
11
Step-by-step explanation:
It may not be correct
Quinn is mixing juices to make pund for a party. Select all the mixtures
that will fit into a 1-gallon pitcher.
6 pänts apple juice and 6 cups cranberry juice
2 quarts apple juice and 8 cups cranberry juice
5 pints apple juice and 2 quarts cranberry juice
9 cups apple juice and 3 pints cranberry juice
punts apple juice and 3 quart qanberry juice
Answer:
2 quarts apple juice and 8 cups cranberry juice
9 cups apple juice and 3 pints cranberry juice
Step-by-step explanation:
We can easily obtain the answer by converting all the volumes to the same unit and comparing each of them, to see if they can make up to a gallon.
1). 6 pints apple juice and 6 cups cranberry juice
Let us convert pints and cups to gallons
1 pint = 0.125 gallons
6 pints = 6 X 0.125 = 0.75 gallons
1 cup = 0.0625 gallons
6 cups = 6 X 0.0625 =0.375 gallons
Total juice got from here is 0.75 +0.375 = 1.125gallons.
This cannot fit into the one-gallon pitcher as it is more in volume than a gallon.
2) 2 quarts apple juice and 8 cups cranberry juice.
2 quarts = 0.5 gallons
8 cups = 0.5 gallons.
Total juice got here is 0.5 + 0.5 = 1 gallon.
This can fit into the 1-gallon pitcher
3). 5 pints of apple juice and 2 quarts of cranberry juice
5 pint = 0.625 gallons
2 quarts = 0.5 gallons
Total juice got here is 0.625+ 0.5 = 1.125 gallon
This cannot fit into the 1-gallon pitcher
4). 9 cups of apple juice and 3 pints of cranberry juice
9 cups = 0.5625 gallons.
3 pints = 0.375 gallons
Total juice got here is 0.5625 + 0.375 = 0.9375 gallons.
This can fit into the 1-gallon pitcher because it is of less volume.
Hence, only these combination of drinks can fit into the 1-gallon pitcher:
2 quarts apple juice and 8 cups cranberry juice
9 cups apple juice and 3 pints cranberry juice
Find the volume of this cube
Answer:
Step-by-step explanation:
This is a cube so the formula for the volume of a square is a³ = Volume
This means:
5³ = V
V = 125in³
Answer:
125 in^3
Step-by-step explanation:
b/c
v=L×w×h
V=5 in×5 in×5 in
v=125 in^3
[tex]\frac{x}{2}+2+=-2\\[/tex]
Re-Write the quadratic function below in standard Form
y = 5(x+3)(x-4)
First come first served brainiest
Step-by-step explanation:
firat one 50.24
second one 63.585
PLSS HELPP
Find the trigonometric ratio as a fraction Tan N =
Find the trigonometric ratio as a fraction Tan L =
Answer:
Tan N = 4 / 3
Tan L = 3 / 4
Step-by-step explanation:
By Pythagoras theorem,
(LN)² = (MN)² + (LM)²
10² = 6² + (LM)²
100 = 36 + (LM)²
(LM)² = 100 - 36
(LM)² = 64
LM = 8
Tan N
= Opposite / Adjacent
= LM / MN
= 8 / 6
= 4 / 3
Tan L
= 1 / Tan N
= 1 / ( 4 / 3 )
= 3 / 4