Answers
Step-by-step explanation:
if you replace n = 1
(2)(7)^(1-1)
= (2)(7⁰)
= 2×1
= 2
if n = 2
(2)(7)^(2-1)
= (2)(7)^(1)
= 2×7
= 14
choice 1
Related Questions
answer these 4 questions
Answers
Answer:
11) A=84.7m²
12) A=75.2km²
13) A=28.05ft²
14) A=48yd²
Step-by-step Explanation:
11) A = 1/2(bh)
A = 1/2(14×12.1)
A = 1/2(169.4)
A = 84.7m²
12) A = 1/2(bh)
A = 1/2(16×9.4)
A = 1/2(150.4)
A = 75.2km²
13) A = 1/2(bh)
A = 1/2(5.1×11)
A = 1/2(56.1)
A= 28.05ft²
14) A = 1/2(bh)
A = 1/2(16x6)
A = 1/2(96)
A = 48yd²
Answer:
11) A=84.7m²
12) A=75.2km²
13) A=28.05ft²
14) A=48yd²
Step-by-step explanation:
you save $15 per week to purchase a bike that costs $120. write and solve an inequality to find the number of weeks you need to save to purchase the bike.
Answers
Answer:
Must save 8 weeks or more to purchase the bike.
Step-by-step explanation:15*w >= 120 where W is the number of weeks.
w >= 120/15 = 8
You need to save $15 every week for the next 8 weeks in order to purchase the bike.
What is inequality in mathematics?In mathematics, an inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions.
Given is that you save $15 per week to purchase a bike that costs $120.
Assume that you need [w] weeks to save $120 for the bike.
Amount earned per week [A] = $15
Amount earned in [w] weeks [W] = $15w
Money needed [R] = $120
The inequality can be written as -
[W] ≥ [R]
We can write it as -
15w ≥ 120
Solving the inequality, we get -
15w/15 ≥ 120/15
w ≥ 8
Therefore, you need to save $15 every week for the next 8 weeks in order to purchase the bike.
To solve more questions on inequalities, visit the link below-
brainly.com/question/26434651
#SPJ5
How to find a side of a square when area is given?
Answers
Answer:
length =√area use this formula
The side length of square can be found by taking the square root of Area.
What are Squares?Square are closed polygons which consist of four sides and four angles.
Each angle is 90 degree.
All the sides are of equal length.
So, by the definition of square, we know that the side lengths of square are equal.
The formula to calculate the area of the square is,
Area = a², where a is the length of one side of the square.
Let Area be given, let it be equal to A.
Then,
a² = A
Taking square root on both sides,
a = √A
Hence the side length is found by taking the square root of Area.
Learn more about Area of Square here :
https://brainly.com/question/30556035
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A table showing pairs of r- and yvalues is shown below.
х
у
0 0.5
1 1.5
2. 4.5
3 13.5
4 40.5
Which equation describes the relationship between the pairs of r- and y-values?
Answers
Answer:
4
Step-by-step explanation:
Approximately how much fuel can fit into a tanker truck with a radius of 4 feet and a height of 32 feet?
Answers
Can anyone help me solve 1/2 times3/4? I am kind of confused if the answer is 3/8 or 6/8. Please help as quickly as you can!
Answers
Answer:
[tex]\frac{3}{8}[/tex]
Step-by-step explanation:
[tex]\frac{1}{2}[/tex] x [tex]\frac{3}{4}[/tex]
multiply like normal:
[tex]\frac{1}{2}[/tex] x [tex]\frac{3}{4}[/tex] = [tex]\frac{3}{8}[/tex]
You collect a random sample of size n from a population and calculate a 98% confidence interval. Which of the following strategies produces a new confidence interval with a decreased margin of error?
A: Use a 99% confidence level.
B: Use a 95% confidence level.
C: Decrease the sample size.
D: Use the same confidence level, but compute the interval n times. Approximately 2% of these intervals will be larger.
E: Nothing can guarantee that you will obtain a larger margin of error. You can only say that the chance of obtaining a larger interval is 0.02.
Answers
Answer:
B: Use a 95% confidence level.
Step-by-step explanation:
In the case when the random sample size from a population is collected and it determined the 98% confidence interval so that decrease the margin of error is to use a 95% confidence interval as it is needed to have a less critical value
So according to the given options, the option B is correct
Order the numbers from least to greatest 3/10, 0.34, 27%, 3/8
Answers
Answer:
3/10,3/8,27%,0.34
Step-by-step explanation:
Answer:
27%, 3/10, 0.34, 3/8
Step-by-step explanation:
I just made them all decimals (same as percent)
3/10=0.30
3/8= 0.375
hope this helps pls mark brainleist
Hey can you please help? I am struggling a lot don’t know how to solve this
Answers
Answer:
64.8
Step-by-step explanation:
Pythagoreon Theroem
a^2 + b^2 = c^2 in this situation it would actually be the opposite, seeing where the "x" is (on a leg) c^2 - b^2 = a^2. First take the square of 67 and 17
67 squared is 4489 and 17 squared is 289 then subtract both results
4489-289 = 4200 take the square root of this number
64.8074 (Round to the tenths 64.8)
Five less than twice the value of a number is equal to three times the quantity of four more than ½ the number. What is the number?
Answers
Step-by-step explanation:
(2x-5) = 3(4+x/2) then solve for x.
2x-5 = 12 + (3/2)x
2x-(3/2)x = 17
x/2 = 17
x=34
Checking the left side, (2x-5) = 2(34) - 5 = 63.
Checking the right side, 3(4+(34/2)) = 3(4+17) = 3(21) = 63.
27 is 50% of what number? Enter your answer in the space below.
Answers
Answer:
54
Step-by-step explanation:
so 27 is half of 54
In the diagram below, what is the measure of the missing angle?
Answers
Answer:
Answer is 62 degrees.
Step-by-step explanation:
The sum of all angles of a triangle is 180°
x + 70 + 48 = 180
x + 118 = 180
x = 180 - 118
x = 62
Approximate each irrational square root of 24
Answers
Find the probability that the team will win exactly one of the two matches
Answers
Answer:
The probability is 0.341
Step-by-step explanation:
Here, we want to calculate the probability that the student will win exactly one of the two matches
This means that;
If they win on Saturday, they lose on Sunday
or
If they lose on Saturday, they win on sunday
So either of the two scenarios will give that the team will win on either of the two days
Mathematically, we have that;
(0.45 * 0.33) + (0.55 * 0.35)
= 0.1485 + 1925
= 0.341
16. Jefferson High School has an enrollment
of 1,864 students. In May, 564 students will
graduate. How many students will be enrolled
after graduation?
Answers
Answer:
1,300 students
Step-by-step explanation:
1864 - 564 = 1300
7. Find the corresponding angle.
(look at the picture)
Answers
Answer:
angle SXV
Step-by-step explanation:
-18+x=-x+12
This one ??
Answers
Answer:
X = 15
Step-by-step explanation:
Let's solve your equation step-by-step.
−18+x=−x+12
Step 1: Simplify both sides of the equation.
x−18=−x+12
Step 2: Add x to both sides.
x−18+x=−x+12+x
2x−18=12
Step 3: Add 18 to both sides.
2x−18+18=12+18
2x=30
Step 4: Divide both sides by 2.
2x/2 30/2 = 15
If X:Y = 4:5 and x+y=144, then the values of x and y respectively are
A= 74 and 70
B= 70 and 74
C= 80 and 64
D= 64 and 80
Answers
Answer:
b
Step-by-step explanation:
domt knowsjsbjsodnsodndjdns
suppose the expression was (12-3) to the second power would you have to still simplify 3 to the second power first explain
Answers
You would take which ever number is taken to the power sat it was 12 to the power of 2+4, you would take the 12 not the 4, Hope this helps!
What two numbers multiply to get 7 and add to get -8
Answers
Answer:
-7 and -1
Step-by-step explanation:
-7x-1=7
-7-1=-6
-7 and -1
- have a great day
Find the Value of X please
Answers
Add the two valleys together and set them equal to 90. Then solve
help me please! someone?
Answers
Answer:
105 for 3 hours
Step-by-step explanation:
First we have to find that how much he is charged for 1 hour.
140 : 4 = 35 per hour
Then we have to find how much he is charged for 3 hours by multiplying with 3.
3 x 35 = 105 per 3 hours
Answer:
£105
Step-by-step explanation:
let y represent the unknown amount
£150 = 4 hrs
y = 3 hrs
we then cross multiply
£150 x 3 hrs = y x 4 hrs
450= 4y
divide both sides by 4
450/4 = 4y/4
105 = y
Solve each equation.Show your work.
Can someone help me please??
Answers
Answer:
1/2a = -5
a = (-5 x 2) : 1
a = -10
8 - b = 9,5
b = 8 - 9,5
b = -1,25
0,1 = -10c
c = 0,1 : -10
c = -0,01
I hope it's helpful.
WILL MAKE BRAINLIST!!!!!!
Explain when you should reverse the inequality symbol when solving an equality.
Answers
Answer:
To do this, subtract 6 from both sides. − 3_x_ + 6 − 6 > 12 − 6. −3_x_ > 6. Now divide both sides of the inequality by −3. Since you're dividing by a negative number, you need to flip the inequality sign.
Step-by-step explanation:
find the value of given expression
[tex] \sqrt{312 \times 312} [/tex]
Answers
Step-by-step explanation:
[tex]
\sqrt{312 \times 312} \\ = \sqrt{312 ^{2} } \\ = 312
[/tex]
Hope it will help :)❤
Answer:
√{312×312}=√312²=±312 is your answer
Daisy wants to survey middle school students to determine whether they would prefer to use a laptop or a tablet in the computer lab. She decides to go to the mall and survey the first 30 people she sees. Is this sample likely to be representative of middle school students? Explain your reasoning.
Answers
Find the area of the
trapezoid (explain ur answer)
Answers
Answer:
49
Step-by-step explanation:
8*7=56
7*6=42
56+42=98
98/2=49
Simplify the expression 5^3 + 3(5 − 3).
Answers
Answer:
131
Step-by-step explanation:
Hope it helps ;)
A taxi driver works out the fare for a journey, C pounds, using the formula , C=50h+0.5d where h is the hours driven and d is the distance travelled in km. What is the fare for a journey of 12 km that takes 0.5 hours?
Answers
Answer:
31
Step-by-step explanation:
Erik and Heather weigh a total of 260 pounds. If Erik weighs 135 pounds, how much does Heather weigh?
Answers
260-135=125 pounds
Therefore Heather weighs 125 pounds
Answer:
subtract 260-135=120
Step-by-step explanation: