Complete Question
Use a ratio box to solve this problem the ratio of new pens to used pens was 4 to 7 in all there were 242 pens, how many new pens were in the box?
Answer:
88 new pens
Step-by-step explanation:
The ratio of new pens : Old pens = 4:7
Sum of Proportion = 4 + 7 = 11
Total number of pens = 242 pens
The number of new pens is calculated as:
4/11 × 242 pens
= 88 new pens
Therefore, the number of new pens = 88 new pens
The area of a rectangle is 20 mm2. If the width is 4 mm, find the length?
Answer:
length = 5 mm
Step-by-step explanation:
area = width x length
20 mm² = 4 mm x length
divide both sides of the equation by 4 mm:
length = 5 mm
Answer:
lenght 5
Step-by-step explanation:
A rectangle has a perimeter of 30 yards. If one side is 5 yards long, how long is the other side?
A. 15 yards
B. 25 yards
C. 10 yards
D. 30 yards
Answer:
C. 10
Step-by-step explanation:
5+5=10
10+10=20
10+20=30
Answer:
The other is 10 yards long
Step-by-step explanation:
For a given rectangle
Perimeter (P) = 30 yards
and one of rectangle is 5 yards
Now,
Perimeter of rectangle
P = 2l + 2b
30 = 2(5) + 2b
30 = 10 + 2b
30 - 10 = 2b
20 = 2b
b = 20 ÷ 2
b = 10 yards
Thus, The other is 10 yards long
-TheUnknownScientist
Suppose you invest money in two accounts. One of the accounts pays 4% interest annually, and
the other account pays 5% interest annually. You have $ 2000 more invested in the account paying
4% than in the account paying 5%. How much do you have invested in the account paying 4% if
you earn $ 670 interest in a year?
Answer:
$16,750
Step-by-step explanation:
It took a lot of plugging in and guessing
The formula used was 16750(1+.04)^1
That equaled 17420
17420-16750 is 670
Hope this helps
30 POINTS!!! PLEASE ANSWER THE QUESTIONS IN THE PICTURES!!! EACH QUESTION HAS 2 ANSWERS!!!!
Answer:
Step-by-step explanation:
I believe the first question is 1.9
second: 48.2
sorry didn't understand the third one :(
good luck in your exam!if you want 10 points answer this its easy
Answer:
1; 3; 9; 27, 81
-15; -8; -1; 6; 13
1/2; 1/4; 1/8; 1/16; 1/32
Step-by-step explanation:
Hope This Helps!
Thanks For the 5 points ; )
can someone check my answer? i got 600.
Answer:
Volume = 120 cubic cm
Step-by-step explanation:
We would apply the formula for determining the volume of a square bases pyramid which is expressed as
Volume = 1/3 x base area x height
From the diagram,
length of square base = 6 cm
The base area = 6^2 = 36
height = 10
Thus,
Volume = 1/3 x 3/6 x 10
Volume = 120 cubic cm
I hope this help you! :)
Solve y=f(x) for x. Then find the input when the output is −3. f(x)=−7x−2 x= The input is when the output is −3.
Answer:
The input is 1/7
Step-by-step explanation:
If y =f(x)
Given that f(x) = -7x -2, then y = -7x-2
x is the input
y is the output
Given the output y = -3, we are to find the input value x
Recall that y = -7x-2
On substituting the value of y into the equation
-3 = -7x - 2
-7x = -3+2
-7x = -1
x = -1/-7
x = 1/7
Hence the input is 1/7
How much money was spent?
16
24
28
22
List all the transformations for the following equation.
Answer:
flipped over the x-axis
horizontal shift left 7 units
vertical shift down 6 units
Step-by-step explanation:
Choose the correct simplification of the expression a^9 multiplied by b^10/a^2 multiplied by b^7
A^11b^17
1/a^11b^17
1/a^7b^3
A^7b^3
Answer:
a^7 b^3
Step-by-step explanation:
The question can be interpreted as
[(a^9)( b ^10)] / [(a^2 )×( b ^7)]
Then we can bring the denominator up, which means the power on the denominator will become (-ve) once it comes to the numerator side. Then we have
a^(9-2) × b^(10-7)
We can simplify by performing substraction on the power
= a^7 b^3
HELP DUE IN 10 MINS!
m∠WXZ =??
PLEASE HELP AND NO FILES PLEASE
1. you spin a penny and a nickel on a table. The penny lands on heads and the nickel lands on tails. find the probability
2. A container has 7 green buttons, 3 yellow buttons, and 4 blue buttons. You reach in and randomly draw out a blue button. You KEEP the blue button and reach in again to draw out a second blue button. find the probability.
Answer:
Step-by-step explanation:
For question 1 is a 50% chance on going on either heads or tails
for question 2 it will be green there is less of the blue buttons and more green
An observer in the lighthouse is 70 feet above the water. He sites two boats in the water directly in front of him. The angle of depression to the nearest boat is 35°. The angle of depression to the other boat is 18°. What is the distance between the two boats? Round to the nearest foot
Answer:
62 feet. looked it up.
Step-by-step explanation:
Have a great day! :)
When identifying properties of n - sided polygons where 3 _< n <_ 10. What does 3 <_ n <_ 10 means ?
9514 1404 393
Answer:
3 ≤ n ≤ 10 means "three is less than or equal to n, which is less than or equal to 10"
you're concerned with polygons having 3 to 10 sides, inclusive.
Step-by-step explanation:
The symbol ≤ means "less than or equal to." The compound inequality ...
3 ≤ n ≤ 10
means the value of n may range from 3 to 10, inclusive.
__
In the present context, where n is a number of sides, it means you're concerned with polygons that are any of ...
triangle, quadrilateral, pentagon, hexagon, ...
heptagon, octagon, nonagon, decagon
Anyone know how to do this?
Answer:
Gonna say B
Step-by-step explanation:
-0.01 (65)+110 = 109.35
It was the predicted value of the 65 year old's vision score.
Since the equation has an equal sign
y (=)
And not more than nor less than, answer choices C and D are eliminated.
The exact value for the 65 year old's vision score is 102. So, A isn't right.
PLEASEEEEEEEEEEE HELPPPPPPPPP WITH THISSSSSSSSS
Answer:
P = 10x + 2
Step-by-step explanation:
Formula to find perimeter:
P = 2(l + w)
P = 2(4x + 1 + x)
P = 2(5x + 1)
P = 10x + 2
Select the correct answer.
As part of a class project, Sarah and Geoffrey conducted a survey asking their peers whether they planned on taking a music class the next year.
of the 90 students they surveyed, 43 responded favorably. Sarah and Geoffrey calculated the margin of error for different confidence intervals.
Their work is shown.
Sarah
Geoffrey
95% confidence:
90% confidence
ME = 1.96
0.48(1 - 0.48)
90
ME = 1.65V
133
Which student incorrectly found the margin of error and why?
A. Sarah incorrectly found the margin of error because she used the wrong critical value.
B. Sarah incorrectly found the margin of error because she used the wrong sample proportion
C. Geoffrey incorrectly found the margin of error because he used the wrong sample size.
D. Geoffrey incorrectly found the margin of error because he used the wrong critical value.
Answer:
Geoffrey incorrectly found the margin of error because he used the wrong sample size.
Please give be brainliest, I really need it.
Geoffrey incorrectly found the margin of error because he used the wrong sample size. Therefore, the correct option is option B.
What is mathematical error?Measurement Error is the difference between the approximated value and the actual value of an object/quantity. The relative error can be computed in the percent with the help of relative error formula. Errors in measuring instruments occur due to inescapable faults in the measuring instrument and limitations of the human eye.
There are three types of errors in solving mathematics problems, which are factual error, procedural error, and computational error. Geoffrey incorrectly found the margin of error because he used the wrong sample size.
Therefore, the correct option is option B.
To know more about mathematical error, here:
https://brainly.com/question/29091758
#SPJ2
In a school with 2,000 students, 250 are athletes. Of those athletes, 120 lift weights in addition to participating in their primary sport. Thirty-seven athletes lift weights as their primary sport. The newspaper wants to select five athletes at random from the school to interview. What is the population size?
A.) 37
B.) 120
C.) 250
D.) 2,000
Answer:
c
Step-by-step explanation:
sub (−7x+5)−(2x2−8x+6).
10
sub (−7x+5)−(2x2−8x+6).
a.( 18:32)
b.(6:36)
c.(9:21)
convert the following ratio to fraction in it's lowest from
Answer:
Step-by-step explanation:
18 in every 32 (people or whatever it is) 18/32 then simplify i believe
Find the circumference
Answer:
circumference:
2 × 3.14 × 5.8m = the circumference ** (use your calculator here, ill die if I in do this)
Suri makes $15 per hour and gets a weekly bonus of $25. Juan makes $14 per hour and gets a weekly bonus of $50. Is it possible for Suri and Juan to make
the same amount of wages, y, by working the same number of hours, x, in one week?
O Yes, because the slopes of the equations are different so the system of equations will have one solution.
No, because the slopes of the equations are different so the system of equations will have no solutions.
O Yes, because the slopes of the equations are the same so the system of equations will have infinitely many solutions.
No, because the slopes of the equations are the same so the system of equations will have no solutions.
Answer:
first option
They will make the same amount in week 25
Step-by-step explanation:
Point A'(2,3)A
′
(2,3)A, prime, left parenthesis, 2, comma, 3, right parenthesis is the image of A(3,-4)A(3,−4)A, left parenthesis, 3, comma, minus, 4, right parenthesis under a translation.
Determine the translation.
Use non-negative numbers.
A translation by
units to the
and
units
Answer:
Step-by-step explanation:
1 unit left and seven units up. I got the answer right on Kahn
Find the area of each sector. Round your answer to the nearest tenth
Answer:
[tex]398.2 {km}^{2} [/tex]
Step-by-step explanation:
[tex] \frac{270}{360} \times \pi {r}^{2} \\ \frac{270}{360} \times \pi \times {13}^{2} \\ \frac{270}{360} \times \pi \times 169 \\ 398.2 {km}^{2} [/tex]
Hope this helps you
Can I have the brainliest please?
Have a nice day!
If angle 3 is 4x+1 and angle 4 is 7X+3. what are the measures of angle 3 and 4?
Help me please !!!!!!
Answer:
The y-int represents the base price of $200 for airfare from NYC
The slope represents a cost of 30 cents per mile traveled
If the base cost for airfare changed to $50 and the cost per mile is unchanged, the new equation would be y=50+0.30x
If the cost per mile changed to 50 cents, the new equation would be y=200+0.50x
Which of the following could be the number shown on the number line?
Answer:
I believe your answer would be C. square root of 67
Step-by-step explanation:
If 8 is the square root of 64 and the missing number is just over 8, square root of 72 would be too much and A. and D. would be too little. I do deeply apologize if this is incorrect.
yo i need help please i can’t fail please help me i’ll even give u a brainliest
A: 36 cubic cm
B: 339.12 cubic cm
C: 113.04 cubic cm
D: 678.24 cubic cm
Answer:
C
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
the volume of the cone is
V= πr²[tex]\frac{h}{3}[/tex]
i really need help please
The ratio of boys to girls in class is 4 : 5
What fraction of the class are boys
Answer:
The ratio of boys to girls is 4:5. So let 4x be the number of boys and 5x be the number of girls. Then 4x+5x = 9x is the total number of students. Then the fraction of boys in the class is 4x/9x = 4/9.