Answer:
0.4
Step-by-step explanation:
Find side x give answer to 1dp
Answer:
X= 10.8
Step-by-step explanation:
Find the equation of the line that goes through the point
(-2,5) and a slope = -4
Submit
Please help
Answer:
y=-4x-8
Step-by-step explanation:
use the equation y-y1=m(x-x1) and solve for y
Answer:
y=-4x-3
Step-by-step explanation:
For this, you would use the point-slope formula, which is (y-y1)=m(x-x1), with x1 and y1 being the coordinates from the ordered pairs, and m being the slope. You can plug the values from the problem into the formula:
(y-5)=-4(x+2)
y-5=-4x-8
y=-4x-3
hope this helps! :)
Solve each system of equations 2a+b+c=0 2b+c+a=-4 2c+a+b+4
Answer:
(a, b, c) = (0, -4, 4)
Step-by-step explanation:
Any of a variety of calculators, spreadsheets, or web sites can solve these equations for you. A calculator result is attached. It shows the solution to be ...
(a, b, c) = (0, -4, 4)
__
If you'd like to solve the system by hand, here's one way:
Add the three equations together:
(2a +b +c) +(2b +c +a) +(2c +a +b) = (0) +(-4) +(4)
4a +4b +4c = 0 . . . . simplify
a +b +c = 0 . . . . . divide by 4
Substitute this into each of the other equations:
a +(a +b +c) = 0 ⇒ a +0 = 0 ⇒ a = 0
b +(a +b +c) = -4 ⇒ b +0 = -4 ⇒ b = -4
c +(a +b +c) = 4 ⇒ c +0 = 4 ⇒ c = 4
1. Which of the following models is an exponential decay model?
a) y = 12 (3.57)^t
b) y = 4 (1.21)^t
c) y = 1 + 6t
d) y = 7 (0.98)^t
2. Which of the following models is an exponential decay model?
A) y = 2,000 (0.07)^t
B) y = 4,000 (3.84)^t
C) y = 26t^2
D) y = 1 + 17t
3. Exponential decay models have a base between ____ and ____.
Answer:
1. d) [tex]\mathsf{y=7(0.98)^t}[/tex]
2. A) [tex]\mathsf{y=2000(0.07)^t}[/tex]
3. zero and 1
Step-by-step explanation:
General form of an exponential model: [tex]\mathsf{y=ab^x}[/tex]
If 0 < b < 1 then model decays
1. d) [tex]\mathsf{y=7(0.98)^t}[/tex]
2. A) [tex]\mathsf{y=2000(0.07)^t}[/tex]
3. Exponential decay models have a base between 0 and 1
Finding the missing side of an triangle?
Answer:
10.1119 m or √102.25 m
Step-by-step explanation:
Using our lovely Pythagorean theorem, a² + b² = c², we can find the value of x in this triangle.
Let's say that a = 4.8 and b = 8.9, then set c as x.
(4.8)² + (8.9)² = x²
23.04 + 79.21 = x²
x² = 102.25
x = √102.25
= 10.111874208...
≈ 10.1119
You have four $1 bills, three $5 bills and two $10 bills in your wallet. How much money do you have in your wallet
Answer: $39
Step-by-step explanation: 4(1)+3(5)+2(10)=39
Answer:
39 dollars.
Step-by-step explanation:
1 x 4= 4
3 x 5= 15
2 x 10= 20
add them up:
15+4= 19
19+20= 39
Find the length of the side RT in the triangle above.
In the given ∆RST,
➾Tan 53° = ST/RT
➾ 1.327 = 14/RT
➾ RT = 14/1.327
➾ RT = 10.55 (approx)
➢ Therefore, the length RT = 10.55 cm (approx)
Directions: Write each equation in slope intercept form (y = mx + b)
1...2x+y=1
x-2y=8
2... 3x+2y=4
x+2y=-4
3... 4x+y=1
x+y=-2
SHOW WORK
Answer:
Below.
I Hope it helps :)
Step-by-step explanation:
Slope intercept form :
y=mx+b
1.
[tex]2x + y = 1[/tex]
Slope intercept form :
[tex]y = - 2x + 1[/tex]
Equation :
[tex]x - 2y = 8[/tex]
Slope intercept form :
[tex] - 2y = - x + 8[/tex]
or
[tex] y = \frac{1}{2} x - 4[/tex]
2.
[tex]3x + 2y = 4[/tex]
Slope intercept form :
[tex]2y = - 3x + 4 \\ [/tex]
Divide through by 2
[tex]y = - \frac{3}{2} x + 2[/tex]
Equation :
[tex]x + 2y = - 4[/tex]
Slope intercept form :
[tex]2y = - x - 4[/tex]
Divide through by 2
[tex]y = - \frac{1}{2} x - 2[/tex]
3.
[tex]4x + y = 1[/tex]
Slope intercept form =
[tex]y = - 4x + 1[/tex]
Equation :
[tex]x + y = - 2[/tex]
Slope intercept form :
[tex]y = - x - 2[/tex]
You are an office manager, and you need to buy a new
printer. You are looking at two options for the printer
model you like. A local electronics store offers the
model for $499.99 plus a 5% sales tax. An online store
offers the same model for $549.99 plus $22.95 for
shipping and no sales tax. You plan to use a coupon
for the online store for 10% off the purchase price
before the shipping fee.
What will be the final price of the better deal?
$472.49
$515.65
$517.94
$524.99
$572.94
First let's calculate the final price at the electronic store.
499.99*(1+0.05)≈524.99
Now let's calculate the final price online
(549.99+22.95)*(1-0.1)≈515.65
If we compare the two we can see that the online price is cheaper at around 515.65 dollar therefore the second choice is correct.
I hope this helped if you have any questions please ask!
Drag each day to the correct location on the tree drag each estimated measurement next to the correct she not all shapes and measurements will be used.
A tree from a forest with a height of 30 feet is shown below the bottom branches are about 4 feet from the ground and are 10 feet long from left to right.the tree trunk is about 2 feet wide.
what are the appropriate shapes to model the trunk of the tree and the rest of the tree?what are the approximate surface areas of each of the two shapes?
Answer: cone Cylinder
Surface area is 402ft2 and 69ft2
Step-by-step explanation:
I got the answer right
The appropriate shape to model trunk is cylinder, rest of the tree is cone and surface area of trunk is 25.12 [tex]feet^{2}[/tex]and surface area of rest of the tree is 415.58 [tex]feet^{2}[/tex].
What is surface area?It is the space occupied by a two dimensional surface. The area occupied by a three dimensional object by its outer surface area.
How to calculate surface area?The upper part of the tree is similar to the cone and the trunk is of cylindrical shape. So the appropriate shape used to model the entire is cone above the cylinder.
We have been given the height of entire tree=30 feet,
Width of upper part=10 feet.
Height of trunk=4 feet
Width of tree means diameter of upper part or cone. Height of cone means height of cylinder, width of trunk means diameter of cone.
So, The radius of cone ie 5 feer,radius of cylinder is 1 feet, height of cone be 30-4=26 feet.
Surface area of cone is πrl where l is slant height of cone which is equal to [tex]\sqrt{r^{2} +h^{2} }[/tex]
l=[tex]\sqrt{5^{2} +26^{2} }[/tex]
=[tex]\sqrt{701}[/tex]
=26.47 feet.
Surface area of cone=π*5*26.47
=3.14*5.26*26.47
=415,28 [tex]feet^{2}[/tex]
Surface area of cylinder=2πrh
=2π*4*1
=2*3.14*4
=25.12 [tex]feet^{2}[/tex]
Hence cone and cylinder of surface area 415.28 [tex]feet^{2}[/tex] and 25.12 [tex]feet^{2}[/tex] can be used to model out tree.
Learn more about surface area at https://brainly.com/question/16519513
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PLEASE HELP LOOK AT THE PICTURE I NEED HELP NOWWWW!!!! WILL GIVE 20 POINTSSSSSS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Which of the following could be the number shown on the number line?
A.35
B.38
C.37
D. 30
Answer:
A. 35
Step-by-step explanation:
√35 = 5.9160797830996160425673282915616170484155012307943403228797196691
Answer: √35
Plz mark brainliest ;)
Sushil and Fiona win some money and share it in the ratio 3:5. Sushil gets £42. How much did they win in total?
Help please!!
Answer:
Step-by-step explanation:3 divided by 42=14
14*5=70
70+42=112
Divide B by 3 then triple the results
Answer:
It is B
Step-by-step explanation:
B:3=b
bx3=B
Sony’s wireless bluetooth speaker originally costs $99. Currently it is on sale for 45% off. What is the discount?
Answer:
How much it's worth now - 54.45 Dollars
Discount - 44.55 Dollars
A recent survey by the American Automobile Association showed that a
family of two adults and two children on vacation in the United States will
pay an average of $247 per day for food and lodging with a standard
deviation of $60 per day. Assuming the data are normally distributed, if
the family had a z-score of 1.5, what was their daily expense for food and
lodging?
The daily expense for food and lodging will be 337.
What is the z-score?The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.
The z-score is given as
z = (x - μ) / σ
Where μ is the mean, σ is the standard deviation, and x is the sample.
A recent survey by the American Automobile Association showed that a family of two adults and two children on vacation in the United States will pay an average of $247 per day for food and lodging with a standard deviation of $60 per day.
Assuming the data are normally distributed if the family had a z-score of 1.5.
Then the daily expense for food and lodging will be
z = (x - μ) / σ
1.5 = (x - 247) / 60
90 = x - 247
x = 247 + 90
x = 337
The daily expense for food and lodging will be 337.
More about the z-score link is given below.
https://brainly.com/question/15016913
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Byron earns $11.00 per hour. How many hours will Byron have to work to earn $143.00?
7.7 hours
13.0 hours
14.3 hours
15.7 hours
Answer:
13.0 hours
Step-by-step explanation:
$143 ÷ $11 (how he gets payed per hour) = 13 hours
Byron has to work 13 hours to earn $143 dollars
Answer:
[tex]Byron \: will \: have \: to \: work \: for \\ \: 13\: hrs \: to \: earn \: 143[/tex]
[tex]let \: the \: number \: of \: hrs \: = x \\ then \\ for \: the \: salary \: of \: \: 143 \: \\ the \: earning \: \times \: the \: time \: (x) = 143 \\ so \: 11x \: = 143 \\ x = \frac{143}{11} = 13.[/tex]
STEPS
1)
1. Write the coordinates of the 1st and
2nd points.
2. Label the coordinates of the first point
as
(X1,Y1) and the 2nd point as (X2
Y2).
3. Use the formula
m=Y2-Y
X2 - X
1st Point 2nd Point
1st Point:
2nd Point:
m=Y-Y
X2 - X
m=Y-Y
X2 - X
Answer:
The first point is right in the origin, so it's (0,0)
Our second point is (2, 1)
Our first point (0,0) would look like if labeled
0(X1) , 0(Y1)
Our second point would look like if labeled
2(X2) , 1(Y2)
Order them to find the slope;
1 - 0 1
____ = ___, our slope for this is 1/2
2 - 0 2
evaluate and solve for the variable 70 = 7m
Answer:
10= m
Step-by-step explanation:
70 = 7m
70/7 = 7m/7
10= m
hope this helps! :)
Answer: 10m
Step-by-step explanation: m=10
Matthew was flying a paper airplane. If Matthew’s plane flew 36.5 centimeters, how many inches did matthew’s plane fly?
Answer:
The answer should be 14.37008 inches.
Step-by-step explanation:
please help me answer this question!! I don’t understand it at all. picture attached
Answer:
Step-by-step explanation:
whats the angle between m,n,i i think thats what its asking but i dont know for sure.
Solve for x.
z = 6 π x y
Image Below
Answer:
third option
Step-by-step explanation:
Given
z = 6πxy ( isolate x by dividing both sides by 6πy )
[tex]\frac{z}{6\pi y}[/tex] = x
Can anyone help me with this?
Answer:
is there an area tho
Step-by-step explanation:
Write 3 1/2 hours : 36min as a ratio in its simplest form
Answer:
Step-by-step explanation:
you can re-write 3 1/2 hours into minutes.
1 hr = 60 minutes,
Therefore:
3 1/2 hours = 3.5 times 60 = 210 minutes
So now we have the ratio:
3 1/2 hours : 36 minutes
210 minutes : 36 minutes
Both numbers can be divided by 6
210/6 = 35 and 36/6 = 6
So now we can re-write the ratio as :
35 : 6
Determine if the equations are intersecting, parallel, or coincident.
4x +y=-4
–8x – 2y = 10
Answer:
the equations are coincident.
Step-by-step explanation:
Answer:
Parallel
Step-by-step explanation:
The answer above me is wrong. These lines are parallel, not coincident.
A box of dried fruit has 52 Calories in 4 servings how many calories are there per serving
Answer:
13 calories per serving
Step-by-step explanation:
52/4 = 13
Answer:
13
Step-by-step explanation:
52 divide 4 equals to 13
Hope this help :)
BE QUICK I NEED THE ANSWER AND WILL GIVE BRAINLEST
A candy bar box is in the shape of a triangular prism. The volume of the box is 1,200 cubic centimeters.
Part A: What is the height of the base? Show your work. (5 points)
Part B: What is the approximate amount of cardboard used to make the candy box? Explain how you got your answer. (5 points)
Answer:
A) 12 cm
B) 520 cm² (just sides); 720 cm² (sides and base)
Once you have identified a problem, the next step is to determine the possible solutions, which are called
Answer:
decision alternatives
Step-by-step explanation:
uhhh yea thats pretty much it -
A 20-feet ladder leaning against a wall is used to reach a window that is 17 feet above the ground. How far from the wall is the bottom of the ladder? Round to the NEAREST TENTH of a foot.
Group of answer choices
10.5 ft
10.4 ft
10.6 ft
10 ft
Answer:
B, 10.5
Step-by-step explanation:
It's actually 10.54, but since you want be to round it, it's 10.5
which expression is equivalent to 2(t+1)+(t+3)?
a. 2t + 5
b. 3t + 5
c. 3t + 3
d 4t + 8
2x+5=12
Show me the working out
Answer:
[tex]\sf{x=\dfrac{7}{2}=3.5 }[/tex]
Step-by-step explanation:
It is necessary to isolate the term of x from both sides in order to solve this problem.
First, subtract by 5 from both sides.
2x+5=12
[tex]\sf{2x+5-5=12-5}[/tex]
Solve.
[tex]\sf{12-5=7}[/tex]
2x=7
Divide by 2 from both sides.
2x/2=7/2
Solve.
Dividing is another option.
7/2=3.5
So, the final answer is 7/2=3.5.
I hope this helps you! Please let me know if my answer is wrong.