Answer:
2.275%
Step-by-step explanation:
We start by calculating the z-score
Mathematically;
z-score = (x-mean)SD
here, x = 70.5
mean = 65.5
SD = 2.5
Substituting these values;
z = (70.5-65.5)/2.5
= 5/2.5 = 2
So we want to calculate the probability that;
P( z> 2)
We check the standard normal distribution table for this
That will be
0.02275
In percentage, this is 2.275 %
Rewrite the following equation in standard form.
y + 7 = 2(x - 6)
Answer:
(-5)
Step-by-step explanation:
(-5)+7=2(×-6) fahhshzhsuhshzhhsbwysvavaghahahahwhwgwvavvwhhwshahwh
can anyone help with this question
Step-by-step explanation:
GCF of 2 prime numbers is always 1, because prime number only have two factors, themselves and 1.
LCM of 2 prime numbers will be simply multiplying them together.
Sasha can do that by; finding the HCM of two factors.
Razi will tell Jake to find the LCM you have to find the least common factor of the numbers,and then that's your answer.
Explanation:Hope this helps:)!
Bob’s monthly phone bill is made up of a $10 fee plus $0.05 per minute. Bob’s phone bill for July was $22. Write an equation to model the situation using m to represent the number of minutes. Solve the equation to determine the number of phone minutes Bob used in July.
Answer:
equation: 10 + 0.05x=22
Step-by-step explanation:
the next step after writing the equation would be to subtract 10 from both sides to get 0.05x=12. after this you would then have to divide 12 by 0.05 to get 240 minutes. you could check it by putting 240 in for x to get 10+0.05(240)=22. you would then multiply 0.05 by 240 to get 12 and then add 10 onto it to get 22 which was already given.
9514 1404 393
Answer:
equation: 10 +0.05m = 22
solution: Bob used 240 minutes in July
Step-by-step explanation:
Bob's bill is the total of the fixed fee and the charges based on minutes. The latter is 0.05m, where m is the number of minutes. Hence, Bob's July bill is ...
10 + 0.05m = 22 . . . . . total of charges for July is $22
__
The equation is solved by subtracting the constant and dividing by the coefficient of m.
0.05m = 12 . . . . . subtract 10
m = 12/0.05 = 240
Bob used 240 minutes in July.
heeeeelppp please, :) please
Answer:
7/6
Step-by-step explanation:
In order to find slope when you have two ordered pairs, you use this equation: (y2-y1)/(x2-x1)
In this case, when you plug them in, you get (49-7)/(42-6), which is 42/36, which is 7/6.
Hope this helped :)
Keith has $500 in a saving account at the beginning of the summer. He wants to have at least $200 in the account by the end of the summer. He withdraws $25 (that means he takes $25 out of) from his account each week for food, clothes, and movie tickets.
Answer:
keith is poor
Step-by-step explanation:
sorry
Which expression is equivalent to 100,000
Answer:
the answer is 10 with a little 4 on the top right corner
Step-by-step explanation:
count your zeros
Find the perimeter and area of the polygon
Answer:
p= 76
A=338
Step-by-step explanation:
Perimeter: 15+18+18+8+17=76
Area:
15x18=270+(8x17/2)
270+68=338
for a relation to be a function what must never happen
Answer:
Step-by-step explanation:
A function is a relation in which each input has only one output
so a relation cannot have more than one output
Answer:
each input (x-value) only has one output (y-value)
Step-by-step explanation:
you can use the vertical line test; pretend to draw vertical lines and if there are two point on the graph where the vertical line touches, it cannot be considered function.
Write the unit fraction depicted in the model as a percent.
One-fourth
Answer:
As
1/4×100 = 0.25×100
= 25%
Thus,
1/4 = 25%
Step-by-step explanation:
Given the fraction
1/4
In order to write the fraction 1/4 as a percent, all we need is to multiply 1/4 by 100.i.e.
1/4×100 = 0.25×100
= 25%
Therefore, we conclude that:
1/4 = 25%
best answer=brainiest can someone please explain algebraic expressions?
Answer: In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number). For example, 3x2 − 2xy + c is an algebraic expression.
Step-by-step explanation:
Answer:
An algebraic expression includes variables. Variables are letters that stand for a potential number; most commonly you see x, y, and z used but you can use any letter. Constants are also common in algebraic expressions, and are numbers that are added or subtracted, as well as coefficients, which are what you multiply the variable by.
For example:
3x + 1
Here, the variable is x. The constant is 1. The coefficient is 3.
These are different then other expressions because of the addition of variables. 4 + 4 is not an algebraic expression, but 4x + 4 is.
Algebraic expressions also do not have equal signs, they are not equations.
They can also be more complicated than the ones I've expressed already. 3x^4 + 2x^2 + 4 is an algebraic expression too.
Hope this helps!
Given that function f : x= mx + n, where m and n are constants and m> 0.
If f² : x = 64x - 36, find the values of m and n.
Answer:
yo no hablo english sorry
Step-by-step explanation:
Solve for n.
- 24 -6n= -42
Answer:
n=3
Step-by-step explanation:
Answer:
n=3
Step-by-step explanation:
-24 -6n = -42
+24 (move to other side)
-42 + 24 = -18
-6n = -18
to move the -6 to the other side you divide
-18 divided by -6 is 3
n=3
HELP! I’ll give out a free 50points if someone helps me with this and I’ll mark brainliest
Answer:
B
Step-by-step explanation:
hope this helps ^^
Answer:
B is the correct answer
Step-by-step explanation:
Edit: Woops it was already answered... sorry!
3x + 5 = 2x + 7 What should you do first to isolate the variable?
Answer:
you can subtract 2x from both sides
Then subtract 5 from both sides.
x = 2 is what the equation gives you
Step-by-step explanation:
You can do one of two things.
1. You can subtract 2x from both sides of the equation
or
2. You can subtract 5 from both sides of the equation.
Either one will give you the correct answer.
3x - 2x + 5 = 2x - 2x + 7 Combine the xs
1x + 5 = 7 Subtract 5 from both sides.
x + 5-5 = 7-5
x = 2
Answer:
subtract the lowest variable from the highest variable.
Step-by-step explanation:
3x+5=2x+7
1x+5=7
add the 5 to the 7
12
divide 12 and the 3x
Answer: 4.
x=4
2m+11=-73 what number does m=?
Answer:
m=-42
Step-by-step explanation:
hope this helps:)
Answer:
-42
Step-by-step explanation:
Subtract 11 from both sides making it 2m=-84
Divide 2 from both sides making the expression m=-42
Given vectors u = (2, -3) and v= (1, -1), what is the measure of the angle between the vectors?
O 11.3°
O 78.9°
O 92.2°
O 101.3°
Answer:
A) 11.3°
Step-by-step explanation:
got it right on edge :)
The measure of the angle between the vectors will be 11.3°. Then the correct option is A.
What is an angle?The angle is the distance between the intersecting lines or surfaces. The angle is also expressed in degrees. The angle is 360 degrees for one complete spin.
The angle between the vector is given as,
[tex]\theta = \cos^{-1} \dfrac{u \cdot v}{\left|a \right|\left|b \right|}[/tex]
Given vectors u = (2, -3) and v= (1, -1).
Then the measure of the angle between the vectors will be
[tex]\theta = \cos^{-1} \dfrac{(2, -3)\cdot (1, -1)}{\sqrt{2^2+(-3)^2} \ \sqrt{1^2 + (-1)^2}}\\\theta = \cos^{-1} \dfrac{2 + 3}{\sqrt{13} \sqrt{2}}\\\theta = \cos^{-1} \dfrac{5}{\sqrt{26}}\\[/tex]
θ = 11.3°
Then the correct option is A.
More about the angled link is given below.
https://brainly.com/question/15767203
#SPJ2
If the pre-image (0,-4) is translated by the rule (x−2,y+3) , which quadrant will the image be located
Answer:
Quadrant IV
Step-by-step explanation:
Gridded Response A basketball team scored 8 points more in its second game
than in its first. In its third game, the team scored 42 points. The total number of
points scored in the three games was more than 150. What is the least number of
points the team might have scored in its second game?
I need help!!!!
Answer:
51 points
Step-by-step explanation:
x+x+8+42>150
2x+50>150
2x>100
x>50
So, the least number is 51 which satisfies the inequality
Hope this helps plz hit the crown :D
HELP ME PLEASE
The table below shows the number of each color marker Mr. Martinez has in his
bucket. If Mr. Martinez increases the amount of markers to 153, how many markers
can he expect to be blue?
Answer:
25
Step-by-step explanation:
HEY CAN ANYONE PLS ANSWER DIS MATH PROBLEM!!!!
Answer:
No relationship
Step-by-step explanation:
Answer:
B. The number of vertices equal the number of isosceles triangles.
Step-by-step explanation:
1st figure:
No. of vertices: 4
No. of isosceles triangles: 4
2nd figure:
No. of vertices: 5
No. of isosceles triangles: 5
3rd figure:
No. of vertices: 6
No. of isosceles triangles: 6
Thus, the number of vertices equal to the number of isosceles triangles.
Plzz answer this question properly step by step
Answer:
54°
Step-by-step explanation:
∠A = 2x + 10, ∠C = 3x - 14
∠E + 266 = 360 (sum of angles around a point)
∠E = 360 - 266
∠E = 94°
AB is parallel to line BD. Lets draw a line cuts line AB and line BD to form ∠B and ∠D. Hence:
∠B + ∠D = 180° (sum of interior angles on the same side)
∠A + ∠B + ∠C + ∠D + ∠E = 540° (sum of angles in a pentagon)
2x + 10 + 3x - 14 + 94 + 180 = 540
5x + 270 = 540
5x = 540 - 270
5x = 270
x = 54°
On Monday, Byron spent $8.00 on lunch to purchase two tacos and one burrito. On Wednesday, he purchased one enchilada, one taco, and one burrito and spent $8.50. On Friday, it cost Byron $10.00 for two enchiladas and two tacos. If t represents the cost of a taco, b represents the cost of a burrito, and e represents the cost of an enchilada, which system of equations can be used to find the cost of each?
Answer:
2t+b=8
e+t+b=8.5
2e+2t=10
Mr. Harrison sold 72 hot dogs in 4 days. At this rate, how many hot dogs will Mr. Harrison sell in 7 days?
Answer:
126
Step-by-step explanation:
72/4=18 hot dogs sold per day
18*7=126 hot dogs in a week.
Find the area of the patio
Answer:19x^2-68x
Step-by-step explanation:
first, add the 2x on the side of the large rectangle to the 2x on the pool side to find the length. then find the area of the entire image (4x•8x-10=32x^2-40x) now find the area of the pool (2x•6x-14=12x^2-28x) and add it to the area of the hot tub (x•x=x^2) (13x^2-28x) finally subtract that from the area of the entire image (32x^2-40x=19x^2-68x)!
i need help because i dont understand it
Answer:
6,371.15
Step-by-step explanation:
3.14 times 13^2 times 12
Answer:
Volume equals pi times radius to the power of 2 times height
that will be pi times 13^2 times 12= 6,367.92
radius is the 13 and you have to put it to the power of 2 and multiply it by 3.14 which is pi and multiply it by 12 and the answer is 6,367.92
Step-by-step explanation:
-7x + 3 = x + 11
what is x
Answer: x=-1
Step-by-step explanation: hope this helps!
can someone please help me i dont know how to do it.
Due in half hour, please help!
Answer:
Your answer will be 69
Step-by-step explanation:
Determine whether the equation has no solution, one solution, or infinitely many solutions.
-2(11-12x)= -4( 1 -6x)
Lois earns $20 for walking 4 dogs. How much would she earn for each dog?
Answer: She would earn $5 per dog
Step-by-step explanation: 20 divided by 4 = 5
Answer:
$5 for each dog
Step-by-step explanation:
If you have $20 for walking 4 dogs and wanted to know how much you made for each single dog, you would divide by the number of dogs by the amount you received doing this you get the equation 4/20. That equals 5.
