The number of years it would take Becky to double the amount invested is 10 years.
The rule of 70 is a rule of thumb that is used to know the number of years it would take an investment to double at the interest rate. The formula entails dividing 70 by the interest rate.
Rule of 70 = 70 / interest rate
70 / 7 = 10 years
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Answer:
About 14.3 yearsStep-by-step explanation:
The function for this case would be:
f(x) = 7x, where f(x) is the average return of %, x - is the number of yearsIf we need the money to double, the return rate should be 100%:
7x = 100x = 100/7x = 14.3 yearsI’m not sure how to answer this in a Graph, Diagram, and Algebra(algebraic reasoning too) for a,b,c, and d. Can someone please help me?
The outline that that illustrate how k values change so that the solutions are the ones in the question are as follows
(a) The number line solution contains zero
Using algebra, we have;
The given quadratic inequality is; -x² + 4 ≥ x + k
The number line solution is the expression of the solution on the number line.
We have;
-x² + 4 ≥ x + k
-x² - x + 4 - k ≥ 0
Dividing by (-1), we get;
x² + x - 4 + k ≤ 0
When - 4 + k = -2
k = 2, we get;
x² + x - 4 + 2 ≤ 0
x² + x - 2 ≤ 0
(x - 1)·(x + 2) ≤ 0
Given that the result of the product is less than zero, we have;
((-3) - 1)·((-3) + 2) > 0
Therefore, the solution are;
x ≤ 1, or x ≥ -2
Which gives
-2 ≤ x ≤ 1
Using diagram;The solution of the above inequality includes 0 as shown in the attached number line
Graphically;The graph of the inequality is plotted using MS Excel, showing the solution set, of -2 ≤ x ≤ 1
(b) There are no solution to the inequality
In the present case, we have;
((-1)² - 4×(-1) × (4 - k) < 0
17 - 4·k < 0
[tex]k > \dfrac{17}{4}[/tex]
Let k = 5, we have;
-x² + 4 ≥ x + k
-x² - x + 4 - 5 ≥ 0
-x² - x -1 ≥ 0
The discriminant, is (1² - 4×(-1)×(-1)) = -3 < 0, therefore, there are no real
roots to inequality, and -x² - x -1 is not equal to zero.
GraphicallyPlease find attached the graph of the function, which does not intersect with the x-axis, and therefore, has no values at which y = 0
(c) The solution is a single number
-x² + 4 ≥ x + k
When k = x + 5, we have;
0 ≥ x² + 2·x + 1
0 ≥ (x + 1)²
Therefore;
The only solution is; x = -1
Using diagrams:
Please find attached the solution of the function on the number line
GraphicallyThe graph of the function showing only one intercept is attached
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What can you multiply by to find:
50% of a number?
10% of a number?
75% of a number?
Answer:
50% is 0.5
10% is 0.1
75% is 0.75
Step-by-step explanation:
When multiplying to find the percent of a number, you make it a decimal by dividing it by 100.
How do I solve this?
Answer:
x= -2
Step-by-step explanation:
y=x+4
y=2
2=x+4
-4+2=x
-2=x
x=-2
Answer:
x= -2
Step-by-step explanation:
The kids sell all the bags pf brownies for $2 each. How much money could they make from the Brownie sale?
Answer:
212
Step-by-step explanation:
106 x 2= 212
Answer:
ok so when there is 106 bags of brownies there is two ways that u can do this that i can think of so u can do 106 + 106 which= 212 or 106 x 2 = 212 this one was pretty easy u got this feel free to ask more questions!
Step-by-step explanation:
I have stopped going to school due to my mental break downs because of school so my teachers started sending me my work i have missed but the only thing i was not at school to learn how to do it so please help me....!!
Answer:
1. C.
2. A.
3. B.
i just know those im sorry-
Answer:
1 - c 6.4 ×10^6
2 - a 6.4 ×10
3- b 6.04 ×10^5
4) 5.21× 10^8 × 1.6km
=8.33×10^8 km
5) 10,000,000,000 = 1 ×10^10
BRAINLIST PLS
A triangle has two side of lengths 10 and 14. What value could the length of the third side be?
Use the Pythagorean Theorem [tex]a^2 + b^2 = c^2[/tex].
Since we have 2 sides we can easily solve for the third.
[tex]c^2 = 10^2 + 14 ^2[/tex]
[tex]c = \sqrt{100 + 196}[/tex][tex]= \sqrt{296}[/tex] ≈[tex]17.205[/tex]
A company that makes hair-care products had 8,000 people try a new shampoo. Of the 8,000 people, 16 had a mild allergic reaction. What percent of the people had a mild allergic reaction
Answer:
0,2%
Step-by-step explanation:
16 / 8000 = 0,002
0,002 * 100 % = 0,2%
a drink in japan costs 374 yen. The exchange rate is £1 = 189 yen. What is the cost in pounds
Answer:
Roughly £2
Step-by-step explanation:
multiply the echange rate by 2 , its 378Yen
A school of salmon was swimming in the river 5 feet below the surface. To escape a hungry bear, they went down another 3 feet.
What is the position of the salmon now relative to the surface?
Answer:
8 feet
Step-by-step explanation:
5 + 3 = 8
Answer:
Step-by-step explanation: The school of salmon are now 8 feet below the surface. They start at -5 feet and then you subtract 3 more feet which gives you -8 feet. -5-3=8
Maria scar' gets 28 miles to the gallon. How many miles is her round trip to work
A car moves at a speed of 45 km/h for 20 minutes. what is the distance traveled by the car ?
don't ya ans if u don't know
no plagiarism and spams
need a well explained ans
Speed of car
[tex]45 \frac{km}{h} [/tex]Time : 20 min [tex] \frac{20}{60} h[/tex][tex] \frac{1}{3} h[/tex]We have , speed [tex] = > \: \frac{distance}{time} [/tex]:. Distance [tex] = > \: speed \: \times \: time \\ = > \: 45 \frac{km}{h} \: \: \times \frac{1}{3} h \: \: \\ = > 15 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]Hence , the distance covered by the car is 15 kmI NEED THE ANSWR ASAP: Write the number as a power with a base of 5.
125^3
Answer:
5^9
Step-by-step explanation:
I had this question before.
(High School Geometry) What is the minimum number of regions that are formed by 100 distinct lines in a plane? What is the maximum number of regions formed by 100 lines in the plane?
Answer:
101 - min, 5051 - maxStep-by-step explanation:
Minimum number of regions
You may have 100 parallel lines. This will give us 101 regions
Use following formula to find the maximum possible number of regions:
R(n) = 1 + n(n + 1)/2, where n is the number of linesR(100) = 1 + 100*101/2 = 5051parallel to y = 1/5x-4 and goes through (10,-2) in point slope form
Answer:
y + 2 = [tex]\frac{1}{5}[/tex] (x - 10)
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = [tex]\frac{1}{5}[/tex] x - 4 ← is in slope- intercept form
with slope m = [tex]\frac{1}{5}[/tex]
Parallel lines have equal slopes
The equation of a line in point- slope form is
y - b = m(x - a)
Here (a, b ) = (10, - 2 ) , then
y - (- 2) = [tex]\frac{1}{5}[/tex](x - 10) , that is
y + 2 = [tex]\frac{1}{5}[/tex](x - 10) ← in point- slope form
can i have help with this please
Answer:
Your answer is [tex]2c^{2}[/tex]
Find the area of triangle PQR.
Answer:
70°
Step-by-step explanation:
Since PTS shape is equal to QTR
and PTQ shape is equal to STR
and Since QTP = 10
and Since PTS = 60
Add both up 70
Therefore PQR = 70°
A manufacturer produces cell phone she estimates that by selling them for x dollars she will be able to sell them for 285 minus 2X each week determine what the maximum revenue will be round your answer to two decimal places
Answer:
38.30
Step-by-step explanation:
because 230 -6x=0
i really need help i don’t get this at ALL. :(
Step-by-step explanation:
You have to go to Y axis first then to X. For example : (4,5) go up 4 and go to x axis and when u get to 5 you put a dot. The same thing if is (-4,-5) go down 4 and to the left 5 and mark a dot. When you mark the dot put (_,_).
Hope you understand. Let me know if you don't.
How to calculate the surface area of a football.
Answer:
A football is a sphere, so the formula for calculating its surface area is 4πr²
Hope it helps:)
Umm is this right or wrong and if it's wrong can you tell me the right answer?
Answer:
30
Step-by-step explanation:
d=√(24²+18²)=6√(4²+3²)=6√(16+9)=6√(25)=6×5=30
Help please ASAP !
If 8 km = 5 miles, convert 350 miles into km.
Answer:
560 is your answer... I hope it helps
What is the common difference for this arithmetic sequence 45,40,35,30,25,
Answer:
-5
Step-by-step explanation:
y=6x-5 convert the equation to standard form
Answer:
Add 6x to both sides.
y + 6x = -5
Reorder the left side so that the x term is first.
6x + y = -5
:)
When finding a critical T value for 95% confidence and a sample size of 30, how many degrees of freedom are there?
Answer:
29
Step-by-step explanation:
The formula for calculating degrees of freedom in a t-test is n-1 where n is the sample size. Therefore, there are 30-1=29 degrees of freedom if the sample size is n=30.
Order the integers from least to greatest
7, -3, -25, 25, 0, -10,5
A 0.-3.-10.-25.5.7.25
B -25.-10. -3.0.5.7.25
C -3.-10.-25, 0.5.7.25
Answer:
B
Step-by-step explanation:
-25,- 10, -3, 0, 5, 7, 25
For every 30 minutes she dances, Nell stretches for 10 minutes. What is the ratio value of the time Nell dances to the
time she stretches?
3
10
10/30
30
Pls answer correct
Answer:
30
Step-by-step explanation:
Answer:
A. 3Step-by-step explanation:
For every 30 minutes she dances, Nell stretches for 10 minutes
Ratio:
Dance / Stretch = 30 min / 10 min = 3/1 = 3ne ajudemmmm pfvvv ...
Answer:
NEED TRANSLATOR
Step-by-step explanation:
ENGLISH PLEASE
Use the exchange rate £1 = €1.13 to convert €339 into £.
Answer:
the answer is £300.
..........
Answer:
383.07
Step-by-step explanation:
All the info
£1 = €1.13 What are we trying to do? Turn €339 into £.
Therefore 339 X 0.13=44.07 So 44.07+339=£383.07 making £383.07 the exchanged sum
Damon drove 120 miles in 2 hours and Ashley drove 135 miles in 2.3 hours Ashley insists that she was traveling at a faster rate than Damon Is she accurate?
Ashley is incorrect, they’re traveling at the same rate. hope this helped