Answer:
Average: 4
Standard Deviation: 0
Step-by-step explanation:
Because we don't know how each student did we are going to assume that they all got 20% of the questions right
20% of 20 is 4
Which means that we can assume each student got 4 questions correct
Because all entries are the same the standard deviation is 0
What's the probability of drawing a green marble out of a bag with 2 green marbles and 4 blue marbles?
Answer:
2/6= 1/3
Step-by-step explanation:
Answer:
p=0.4
Answer and Explanation:
Probability of drawing a green marble is p=0.4.
Jamie's quilt is made of 9 green squares and 12 yellow squares. What is the ratio of the number of yellow squares compared to the total number of squares on the quilt? Please write your answer in one of the three ways we learned about.
Answer:
yellow = 12:9 = green
yellow = 4:3 = green
Valeria's Cupcakes recently sold 3 pumpkin cupcakes and 9 other cupcakes. Considering this data, how many of the next 8 cupcakes sold would you expect to be pumpkin cupcakes?
Answer: 24 Pumpkin cupcakes.
Step-by-step explanation:
We know that:
They recently sold 6 Pumpkin cupcakes and 8 other cupcakes.
Then we can model this with the ratio 6:8
This means that for each 6 Pumpkin cupcakes sold, they also sell 8 of another type of cupcakes.
With this information, if they sell 56
write (4x^4)^2 without exponents
Answer:
256x * 16
Step-by-step explanation:
[tex](4x^{2} * 4)^{2}[/tex]
(4x * 4x * 4) * (4x * 4x * 4 )
(16x * 4 ) * ( 16x *4)
16x * 16x = 256x
4 * 4 = 16
256x * 16
hope this helped a little
* = multiply
The given expression without exponent is
[tex]4 \cdot 4 \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x[/tex]
Given :
[tex](4x^4)^2[/tex]
Explanation
We need to write the given without exponents
outside exponent is 2 . so we multiply the parenthesis twice
[tex](4x^4)^2\\4x^4 \cdot 4x^4\\16 \cdot x^4 \cdot x^4\\ 16 \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x\\4 \cdot 4 \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x[/tex]
Learn more : brainly.com/question/16735114
A scuba diver ascends 5 3/4 feet to the top of a boat platform. The diver then descends 20 1/8 feet by jumping off the boat. Write and evaluate on subtraction expression to show what lever under sea level the scuba currently is
If $600 was placed in a savings account with an interest rate of 0.5%,
find the total amount in the account after 8 years and 3 months (8.25
years)?
I got it wrong so oof
If Fran were to paint her living room alone, it would take 6 hours. Her sister Denise
could do the job in 8 hours. How long would it take them working together? If needed,
submit your answer as a fraction reduced to lowest terms.
Please show steps !! my last test for the semester!! 20 points PLEASE!!!
Answer:
r1 =6
r2 =8
t = ?
[(1/r1) * t] + [(1/r2)*t] = 1
t/6 + t/8 = 1
multiply by common denominator... 24
24 (t/6 + t/8 = 1)
4t + 3t =24
7t = 24
t = 24/7 = 3.4hrs
Hello!
I am here with a few geometry questions today.
What would x equal?
You are given the options:
63
64
65
66
When you answer this question please be sure to explain your answer and show work.
Good luck! Have a great day!
Answer:
C. 65Step-by-step explanation:
As KL║JM and JL is transversal, we already have:
∠KLJ≅∠MJLTo satisfy AAS we need to have ∠JKL≅LMJ, therefore:
m∠JKL = m∠LMJ2x+ 18 = 3x - 473x - 2x = 18 + 47x = 65Correct option is C
rob has 7.8 ounces of tuna salad. If she makes three sandwiches with an equal amount of tuna on each, how much tuna does she put on each one?
Answer:
2.6 tuna
Step-by-step explanation:
Amount of tuna salad rob has = 7.8ounces
Amount of sanndwiches made = 3sandwiches
If she had equal amount of tuna on each sandwiches
Amount of tuna in each = Total amount of tuna/Amount of sandwiches
Amount of tuna in each = 7.8/3
Amount of tuna in each = 2.6 tuna
Hence she put 2.6 tuna in each sandwiches
many solutions.
9. Find the slope of the line that passes through the points (-2, 7) and (0, -1). Then write the equation of the line in
slope-intercept form (y = mx +b).
What’s the answer ????
Answer:
999
Step-by-step explanation:
JuiceWRLD
HELP ASAP GIVING BRAINLIST
Step-by-step explanation:
An open circle means that it isn't equal to the number so the sign would either be < or >
The number that the circle is on is -1 so x is either < or > to -1
x is anything to the left to -1 so the inequality would be x< -1
I hope this helps!!!
Here is a rectangle.
9 cm
7 cm
Work out the perimeter of the rectangle.
Answer:
P=32cm
Step-by-step explanation:
Answer: 32
Step-by-step explanation: 9+9 =18
7+7= 14
14+18=32
Jacks father drives to work in 30 min when driving at his usual speed. When traffic is bad, he drives 30mph slower and the trip takes one hour longer. How far is Jacks Fathers work from home in miles
Answer:
The distance of Jack's Father's work from home in miles is 45 miles.
Step-by-step explanation:
a) Data and Calculations:
Normal time taken by Jack's father to drive to work = 30 minutes
Time taken when traffic is bad = 1 hour longer
Speed when traffic is bad = 30 mph slower
Distance covered when traffic is bad, with time taken as 1 hour 30 minutes = time * speed = 1.5 * 30 = 45 miles
b) Jack's father normally drives at 90 mph (45 *2), this is why it normally takes him 30 minutes between his home and workplace when the traffic is not bad. However, when traffic is bad, it takes him one hour longer and he drives at 30 mph slower.
Help! Marking Brainliest (Check Screenshot) Please show work, thank you.
Step-by-step explanation:
Area of Square picture = 20.25 in²
Side lengths of Square picture
= √(20.25 in²) = 4.5 in.
Therefore the dimensions of the picture
is 4.5in by 4.5in.
Josiah and his children went into a grocery store and he bought $15 worth of peaches and mangos. Each peach costs $0.50 and each mango costs $1.50. He bought 2 more mangos than peaches. Graphically solve a system of equations in order to determine the number of peaches, x,x, and the number of mangos, y,y, that Josiah bought.
plz answer my question
what is the equivalent fraction of 6 over 7
Answer:
hope it helped
Step-by-step explanation:
6/7 12/14 18/21
Can anyone help with this?
Answer:
figure it out yourself
Step-by-step explanation:
remember, all three of the triangle's interior angles should add up to 180 degrees.
Answer:
can someone pls explain to me a good dream you had in like a paragraph nothing weird because my grandmother is making me write about that and she wants me to read it to her at the end of the day
Step-by-step explanation:
Solve for x. Round to the nearest hundredth.
Answer:
Do you have a picture?
Step-by-step explanation:
A recipe makes 6 2/3 cups. The serving size is 5/6 cup. How many servings does the recipe make?
Answer:
8 servings
Step-by-step explanation:
5/6 x 8 = 6 2/3
find the difference.
(4−5y)−2(3.5y−8)
Answer:
-12y + 20
Step-by-step explanation:
First, you simplify each term:
apply the distributive property:
4 - 5y - 2 (3.5y) - 2 x -8
Multiply 3.5 by -2:
4 - 5y - 2 (3.5y) - 2 x -8
Multiply -2 by -8:
4 - 5y - 7y +16
Next, we simplify by adding terms:
Add 4 + 16:
-5y - 7y + 20
Subtract 7y from 5y:
-12y + 20
Hence the simplified form is -12y + 20
Answer:
-4·(3y-5)
Step-by-step explanation:
What is an equivalent ratio for 7:9
1. Work out these calculations
104 divide to 4 =
168 divide to 7 =
342 divide to 6 =
423 divide to 9 =
472 divide to 8 =
305 divide to 5 =
112 divide to 7 =
207 divide to 9 =
2. Work out these division calculations with their remainders (e.g.: 25r1)
351 divide to 6 =
509 divide to 9 =
398 divide to 8 =
375 divide to 4 =
436 divide to 7 =
296 divide to 3 =
254 divide to 9 =
345 divide to 6 =
396 divide to 7 =
964 divide to 5 =
231 divide to 4 =
3. What is the missing digit?
?7 x 9 = 333
Answer:
1:
26
24
57
47
59
61
16
23
2:
58.5
56.556
49.75
93.75
62.2857142857
98.667
28.223
57.5
56.5714285714
19.28
57.75
Answer:
100r1
Step-by-step explanation:
PLEASE HELP!!! I DESPERATELY NEED THE ANSWER!!!
Answer: y = x + 4
Step-by-step explanation:
y = mx + b
y is going up by 1 and x is going up by 4.
so y = x + 4.
to check if it's the correct answer plug in one of the numbers to x and y.
for example:
y = x + 4
2 = -2 + 4
Two boats leave the same place at the same time. The first boat heads due north at 10 kilometers per hour. The second boat heads due west at 16 kilometers per hour. After 2.5 hours, how fast is the distance between the boats increasing
Answer:
18.87 km/hr
Step-by-step explanation:
First boat is heading North with a speed of 10 km/hr.
Second boat is heading West with a speed of 16 km/hr.
Time for which they move = 2.5 hours
To find:
The speed at which the distance is increasing between the two boats.
Solution:
Let the situation be represented by the attached diagram.
Their initial position is represented by point O from where they move towards point A and point B respectively.
[tex]Distance = Speed \times Time[/tex]
[tex]Distance\ OA = 10 \times 2.5 = 25\ km[/tex]
[tex]Distance\ OB = 16 \times 2.5 = 40\ km[/tex]
We can use Pythagorean Theorem to find the distance AB.
AB is the hypotenuse of the right angled [tex]\triangle AOB[/tex].
According to Pythagorean theorem:
[tex]\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}\\\Rightarrow AB^{2} = OA^{2} + OB^{2}\\\Rightarrow AB^2 = 25^2 + 40^2\\\Rightarrow AB^2 = 2225^2\\\Rightarrow AB^2 \approx 47.17\ km[/tex]
The speed at which distance is increasing between the two boats is given as:
[tex]\dfrac{47.17}{2.5} \approx 18.87\ km/hr[/tex]
A new health drink has 120% of the recommended daily allowance (RDA) for a certain vitamin. The RDA for this vitamin is 50 mg. How many milligrams of the vitamin is in the drink?
Answer:
60 mg
Step-by-step explanation:
Given that:
Recommended daily allowance for the Vitamin = 50mg
Drink contains 120% of the recommended daily allowance ;
Number of milligram of the Vitamin contained in the drink is :
120% of recommended daily allowance
(120 /100) * 50
1.2 * 50
= 60 mg
i need help w/ this!! thank you
[tex]\boxed{\pink{\sf \leadsto Yes \ there \ is \ a \ solution \ of \ the \ given \ inequality .}}[/tex]
Step-by-step explanation:A inequality is given to us and we need to convert it into standard form and see whether if it has a solution . So let's solve the inequality.
The inequality given to us is :-
[tex]\bf\implies |2y + 3 | - 1 \leq 0 \\\\\bf\implies |2y+3|\leq 1 \\\\\bf\implies (|2y+3|)^2 \leq 1^2 \\\\\bf\implies (2y+3)^2 \leq 1 \\\\\bf\implies (2y)^2+3^2+2(2y)(3) \leq 1 \\\\\bf\implies 4y^2+9+12y - 1 \leq 0 \\\\\bf\implies 4y^2+12y+8 \leq 0 \\\\\bf\implies 4( y^2 + 3y + 2 ) \leq 0 \\\\\bf\implies y^2+3y +2 \leq 0 \:\:\bigg\lgroup \purple{\bf Standard \ form \ of \ inequality }\bigg\rgroup \\\\\bf\implies y^2y+2y+y+2 \leq 0 \\\\\bf\implies y(y+2)+1(y+2)\leq 0 \\\\\bf\implies ( y+2)(y+1)\leq 0 \\\\\bf\implies \boxed{\red{\bf y \leq (-2) , (-1) }}[/tex]
Let's plot a graph to see its interval . Graph attached in attachment .
Now we can see that the Interval notation of would be ,
[tex]\boxed{\boxed{\orange \tt \purple{\leadsto}y \in [-2,-1] }}[/tex]
Hence the standard form of inequality is y²+3y +2 ≤ 0 and the Solution set of the inequality is [ -2 , -1 ] .((11-7)+(14/7)^2)=
A. 4
B. 2
C. 5
D. 8
The rectangle shown has a perimeter of 84 cm and the given area. Its length is 6 more than 5 times its width. Write and solve a system of equations to find the dimensions of the rectangle.
In the number 2,222, how many times larger is the value of the value of the digit in the tens place than the value of the digit in the ones place?
Answer:
the one in the tens place is 10 times more then the number in the ones place
Step-by-step explanation: