Answer:
200
Step-by-step explanation:
Given that :
16% of coins are quarters from 1990
Number of quarters from 1990 = 32
Since 16% = 32 quarters
The number of the total coins can be obtained thus :
Let the total number of coins = x
16% = 32
100% = x
Cross multiply :
0.16x = 32 * 1
0.16x = 32
x = 32 / 0.16
x = 200
Hence, total number of coins in the collection = 200
8. A skateboard ramp is 5ft tall and is 12ft from the base of the ramp to the end. What is the length from the top of the ramp to the end?
Answer:
iacbsc kakwc s s k kd sdidv d lm vdfj
Step-by-step explanation:
Simplify (3a^3-7a^2+a)-(6a^3-4a^2-8).
Answer: −3a^3−3a^2+a+8
Step-by-step explanation: (3a^3-7a^2+a)-(6a^3-4a^2-8)
3a^3+−7a^2+a+−1(6a^3)+−1(−4a^2)+(−1)(−8)
3a^3+−7a^2+a+−6a^3+4a^2+8
(3a^3+−6a^3)+(−7a^2+4a^2)+(a)+(8)
−3a^3+−3a^2+a+8
20 POINTS!!!!!!!!! The formula for finding the volume of a square pyramid is shown below, where a is the side length of the square base and h is the height of the pyramid. When finding the volume of a square pyramid, which unit of measure would be appropriate for the side length of the base? A. ounces B. cubic millimeters C. square inches D. centimeters
Answer:
since it's a square pyramid I would assume it's C square inches
The appropriate unit of measure for the side length of the base is, ''centimeters''.
Option D is true.
What is Measurement unit?A measurement unit is a standard quality used to express a physical quantity. Also it refers to the comparison between the unknown quantity with the known quantity.
We have to given that;
The formula for finding the volume of a square pyramid is,
⇒ V = 1/2a²h
Where, a is the side length of the square base and h is the height of the pyramid.
Now, By the formula;
The appropriate unit of measure for the side length of the base is, ''centimeters''.
Learn more about the measurement unit visit:
https://brainly.com/question/777464
#SPJ2
HELPP ASAP
The ratio of boys to girls in the sixth grade is 3:4. If there are 48 girls, what is the total number of sixth graders?
36
55
60
84
Set up two ratios: 3:4 and x:48. The ratio always stays the same, so the value that you increased the girls by will be equal with the boys. To get from 4 to 48, you need to multiply by 12. So, to get a proportional number of boys, multiply 3 x 12.
The ratio of boys to girls is 36:48. The question is asking how man total, so add. 36 + 48 = 84.
There are 84 total sixth graders.
Answer:
Step-by-step explanation:
I believe it is 84
Help plz:))) I’ll mark u Brainliest
Answer:
B. Angle 8
Step-by-step explanation:
find a number such that five more than one half the number is three times the number
Answer:
0.5
Step-by-step explanation:
Which algebraic expression is equivalent to the expression below?
--------------------------
(4n + 14) + (6 + 7n)
--------------------------
A. 24n + 7
B. 10n + 21
C. 18n + 13
D. 11n + 20
Answer:
D
Step-by-step explanation:
Combine like terms 4n can only be added with 7n and 14 can only be added to 6
Answer:
11n + 20
Step-by-step explanation:
Because all of the signs are + , the parentheses can be removed.
Next, combine like terms:
4n + 14 + 6 + 7n = 11n + 20
None of the three given possible answers is correct.
Which of the following is equal to
Answer:
1.6 billon
Step-by-step explanation:
1.6 billon
Answer:
B
Step-by-step explanation:
i think it is
How far up a wall will a 13-meter ladder reach, if the foot of the ladder is 6 meters away from the base of the wall?
A. 12 m
B. 4 m
C. 133 m
D. 245 m
Answer: C
Step-by-step explanation: I took the test!!
The required distance that the ladder foot away from the base of the wall is √133 meters. Option C is correct.
What are Pythagorean triplets?In a right-angled triangle, its side, such as hypotenuse, perpendicular, and base is Pythagorean triplets.
Here,
Let the base length be x,
According to the question, a 13-meter ladder reach, the foot of the ladder is 6 meters.
So, applying the Pythagoras theorem,
13² = 6² + x²
x = √169 - 36
x = √133
Thus, the required distance that the ladder foot away from the base of the wall is √133 meters.
Learn more about Pythagorean triplets here:
brainly.com/question/22160915
#SPJ2
The area
The area of a triangle ABC is 64 cm². Given AB = 11 cm and BC = 15 cm, Find ABC. Trying to find angle B.
Answer:
∠B ≈ 50.9°
Step-by-step explanation:
The area formula for a triangle can be used to find the missing angle.
Area formulaWe don't want confusion between A for area and angle A, so we define Q as the area of the triangle with sides a, c, and included angle B. In this scenario, 'a' represents side BC (opposite angle A), and 'c' represents side AB (opposite angle C).
Q = (1/2)ac·sin(B)
Unknown angleSolving for B, we have ...
2Q/(ac) = sin(B)
B = arcsin(2Q/(ac)
B = arcsin(2(64)/(11(15)) = arcsin(128/165)
∠B ≈ 50.9°
10. Doug has added two decimal numbers. His work is shown.
14.2
+ 6.25
7.67
Doug's answer is incorrect. What did he do wrong? What should his sum be?
hurry please .
Determine the type of triangle that draw below ASAP
Derek has 6 feet of ribbon that he needs to cut into 2/3 feet pieces. How
many pieces of ribbon can Derek cut?
Answer:
The correct answer is 9 pieces of ribbon.
Step-by-step explanation:
9 is correct because if you do 6 divided by 2/3 you equal 9, therefore 9 is the correct answer
HAVE A GOOD DAY!
I need help please. This is due in 40 minutes:(
Given the diagram below, solve for x and y.
Answer:
x=14, y=37
Step-by-step explanation:
We know that (4y-10)° and 3x° are supplementary angles, meaning the total sum of the angles add up to 180°. (4y-10)° is also corresponding to the blank angle below (9x+12)°, making it a vertical angle. Since (4y-10)°=(9x+12)° because they are vertical angles, then that means we can solve for x:
Original Equation: (4y-10)°+3x°=180
New Equation: (9x+12)°+3x°=180
9x+12+3x=180
12x+12=180
12x=168
x=14
So x is 14
Because x=14, then y is:
4y-10+3(14)=180
4y-10+42=180
4y+32=180
4y=148
y=37
So y is 37
r(x)=x^2-5x-13, s(x)=-3x+5. find r(s(-1)
Can someone please help QUICK!!! (Will mark brainliest) Thank you!!
Answer:
red
Step-by-step explanation:
You are buying bottles of glue for Mrs. Perro's class. A bottle of glue is $0.74. Which equation can be use to find the number bottles she purchased for $12.58?
Find the measure of angle A.
3)
74
16x + 1
19x
A
A) 82°
C) 57°
B) 69°
D) 49°
Answer:
I think its 69* but I be wrong so good luck
Step-by-step explanation:
Brandon has been studying a lot and got 12 questions correct out of 15 on his Unit test. What
percentage of questions did Brandon get correct?
Answer: he got 80% correct
What is the slope of the line?
Answer:
c. 1/3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Find points from graph.
Point (0, -1)
Point (3, 0)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute [SF]: [tex]m=\frac{0+1}{3-0}[/tex]Add/Subtract: [tex]m=\frac{1}{3}[/tex]The average combined SAT score for students at Brookstone High was 1000 in 2003, 1100 in 2004, 1210 in 2005, and 1331 in 2006. Predict the SAT score for Brookstone seniors in 2007. Explain your answer.
What is 21 1/4% expressed as a fraction?
a) 13/200
b) 17/80
c) 21/80
d) 17/40
Answer:
B. 17/80
Step-by-step explanation:
The decimal form is 0.2125.
To make sure if 17/80 is 21.25 percent divide 17÷80=0.2125=21.15 percent
Elly's Hotdog Emporium is famous for its chilidogs. Elly's latest sales indicate that 30% of the customers order their chilidogs with hot peppers. Suppose 15 customers are selected at random.
a. What is the probability that exactly 10 customers will ask for hot peppers?
b. What is the probability that between two and six people inclusive want hot peppers?
c. What is the probability that all 15 will want hot peppers?
Answer:
A.) 0.002980
B.) 0.8335
C.) 0.00000000143
Step-by-step explanation:
The problem can be solved using the binomial probability formula :
P(success) p = 0.3
Number of trials (n) = 15
P(x = x) = nCx * p^x * (1 - p)^(n-x)
A) Exactly 10:
P(x = 10) = 15C10 * 0.3^10 * 0.7^5
3003 * 0.3^10 * 0.7^5
= 0.002980
B) between 2 and 6 people :
Using binomial probability calculator to save time
P(2) + p(3) + p(4) + p(5) + p(6)
0.0915 + 0.170 + 0.219 + 0.206 + 0.147
= 0.8335
C.) What is the probability that all 15 will want hot peppers?
P(x = 15) = 15C15 * 0.3^15 * 0.7^0
= 1 * 1.4348907E−8 * 1
= 0.00000000143
Please, can someone help me on math? Struggling a bit.
THE CORRECT ANSWER IS 12 FAVORS!!
Answer:
yes the answer in 12 fpavers
Step-by-step explanation:
wa
can someone help me with this geometry problem?
=========================================================
Explanation:
The exterior angle is 137, so the interior angle adjacent to that is 180-137 = 43. This is interior angle U of triangle UVW.
Let's find the missing angle W
U+V+W = 180
43+68+W = 180
111+W = 180
W = 180-111
W = 69
We have three three interior angles of triangle UVW
U = 43V = 68W = 69The longest side is opposite the largest angle, so the longest side is UV
The shortest side is opposite the smallest angle, so the shortest side is VW
The order of the sides from smallest to largest is
VW < UW < UV
Refer to the diagram below.
9) Eva can knit of a scarf in an hour. Her sister takes 3/4 of the time she takes. How long will her sister take to knit 8 similar scarves?
Answer:
it would take 360 minutes or 6 hours
Step-by-step explanation:
Answer:
6 hours
Step-by-step explanation:
3/4 of an hour is 45 mins, 45 minutes times 8= 360
Convert to hours and you get 6 hours.
Mark me brainiest
the figure consists of a quarter circle and a parallelogram. what is the area of the composite figure? use 3.14 for . Round to the nearest whole number.
70in.²
84in.²
154in.²
224in.²
Answer:
224
Step-by-step explanation:
the area of a circle is [tex]\pi[/tex][tex]r^{2}[/tex], so for the circle plug in your numbers:
(3.14)([tex]14^{2}[/tex]) = 615.44
divide this by 4 because t=in the picture you only have a fourth of a circle:
615.44 / 4 = 153.86
the formula for area of a trapezoid is [tex]\frac{a + b}{2}[/tex] × h
so plug in your values: [tex]\frac{14+14}{2}[/tex] × 5
you get 70
add 70 and 153.22
70 + 153.22 = 223.22
this can round to 224
Need help with these 2
Answer:
1)(6,4)
11+1=12/2 =6
6+2=8/2=4
What is the predicted value of fuel efficiency (in miles per gallon) for a car with a 2.5 cubic liters engine? Round your answer to two decimals, if needed.
Answer:
25.92
Step-by-step explanation:
Fuel efficiency is the measure or effort that is required to convert the chemical energy in the fuel to the kinetic energy which the cars needs to move. It is meant by how good or effectively the fuel is utilized by the vehicle. It is the ability of the engine to extract more energy from the fuel.
In the context, the size of the engine is 2.5 cubic liters. Then the predicted value of the fuel efficiency will be 25.92 miles per gallon.