Answer:
Yes, this sample is valid.
Step-by-step explanation:
This sample is valid because it surveys a random sample of the 750 students.
Let me know if this helps!
Re write the statement 19+7 divided by 2-5 by including one pair of brackets to make the total equal to 8
3. Order each set of integers from least to greatest
a. 65, 61, 59, 45,2
b. 32, 78, 48, 33, 11
c. 99,86,5,63, 31,9
d. 79, 91, 32, 27, 20
Helllllppppp pleaaaassssererreeeeeeeee
Answer:
The Answer is F
Step-by-step explanation:
first you do the first pair of parenthesis which out give you
24 - (3•2•2) Then you do the second pair of parenthesis, in which would give you 24 - 12 which is equal to 12.
Divide £720 in the ratio 5:1
Answer
600:120
Step-by-step explanation:
5+1 = 6
720/6 = 120
1 = 120
5 = 120 x 5 = 600
Please help me with math!
What is the slope of the line shown on the graph?
Answer:
b- 4/3
Step-by-step explanation:
remember that slope is rise over run
72 is 25% of students that have a cat, how many total students are there?
Answer:
288
Step-by-step explanation:
1. Use the formula: P*T=N
P = percent, T = Total, and N is the other number.
2. So, P*T=N, therefore, 25%*T=72
3. Simplify .25*T=72
4. So get the Total (T) by itself, you have to divide both sides by .25
5. T = 72/.25
6. 288
mZ1 = _º
140
160
80
what is M
Answer:
80
Step-by-step explanation:
the polygons in each pair are similar. find the missing side length.
Answer:
C 15
Step-by-step explanation:
20÷4x3=15
Answer:
C. 15
Step-by-step explanation:
If B's side length is 20, that means in the ratio 3:4 the 4 represents B's side length.
Multiply both sides of the ratio by 5:
15: 20
The answer is 15.
Josh hit a baseball straight up into the air. The equation below describes the
height of the ball (h), in meters, as a function of time (t) in seconds.
h(t) = -9.8t2 + 30t + 1.5
What is the height of the ball after 3 seconds?
Answer:
3.3 meters
Step-by-step explanation:
h(3)=-9.8(3)^2+30(3)+1.5
=-88.2+90+1.5
=3.3
A group of students formed a circle during a game.
The circumference of the circle was about 43.96 ft. ,
and the diameter of the circle was 14 ft.
Which expression best represents the value of π?
Answer and Step-by-step explanation:
C = circumference = 43.96
d = diameter = 14
C = [tex]\pi d[/tex]
Divide both sides by d.
[tex]\frac{C}{d} = \pi[/tex]
[tex]\frac{43.96}{14}[/tex] = [tex]\pi[/tex]
3.14 [tex]= \pi[/tex]
#teamtrees #WAP (Water And Plant)
Choose 3 values that would make this inequality true. 12 57 +n
Answer:
8, 10, 5
Step-by-step explanation:
7+8=15, 7+10=17, 7+5=12. You’re basically substituting the numbers in for n and seeing if its greater than or equal to 12.
Questions 5-8 I'm very confused
Answer:
first one is 8/5
2. -2/4
3.-3/2
4.-5/2
Answer:
5-8=3 by subtractions you have to do is go well for
What is the approximate radius of a sphere with a volume of 1436 cm3?
A. 41 cm
B. 14 cm
c. 7 cm
D. 69 cm
Answer:
r≈7cm
Step-by-step explanation:
Using the formula
V=4
--------= πr^3
3
r=(3V
-------------
4π)⅓=(3·1436
4·π)⅓≈6.99877cm
the answer is 7cm
Answer:
C. 7 cm
Step-by-step explanation:
Took the quiz. Trust
I need helppppp!!!!!!
Answer:
=−24y9
Step-by-step explanation:
4y2(−6y7)
=4y2*(−6y7)
=4*y2*(−6)*y7
=(4*(−6))*(y2*y7)
=−24*y9
Some friends shared 2 bags of chips. If each person got 2/3 of a bag of chips, how many friends were there?
Answer:
1 1/3
Step-by-step explanation:
show work and answer the question!! will mark brainliest
X=1 Y=0
Y-12X+15+3X^2-16X+13-Y=3X^2
-12X+15-16X+13=0
-28X+28=0
X=1
Y=3-16+13=0
A- 105.6 cm2
B- 43.76 cm2
C- 452.16 cm2
Answer:
C. 452.16 cm2
Step-by-step explanation:
A= π r^2 = π · 12^2 ≈ 452.38934 or 452.38
The closest answer to that listed is C
formula:(A = π r²)
π = 3.14
r(radius)^2= radius to the second power.
Plssssssss help meeeeeee plssssssssss I have a important test
Answer:
B
Step-by-step explanation:
RU intersect the angle
2.1b b=5 please help
Answer: 10.5 :) good luck!
Step-by-step explanation:
Answer:
Step-by-step explanation:
10.5
George completed 60% of his homework assignments. What is the portion of his homework that he still needs to complete written as a fraction in simplest form?
A. 3/5
B. 2/5
D. 40/100
E. 60/100
Answer: 3/5
Step-by-step explanation:
60/100 = 0.60 = 60%
3/5 = 0.60 = 60%
Plz help me because I don’t no it
2345 ➗ 550
Answer:
4.26363636364 or this fraction 4 and 6590909090/25000000000
Step-by-step explanation:
i need help on the math question if it's right I'll give brain.
Answer: \frac{2}{5} ; or, write in decimal form: 0.4 .
Step-by-step explanation:
Rewrite as:
_______________________
[tex]\frac{4x}{7} = \frac{8}{35}[/tex] ;
________________________
Now, "Cross-factor multiply":
that is:
_____________________
→ Given: [tex]\frac{a}{b} =\frac{c}{d}[/tex] ;
→ ad = bc ; (b≠0 ; d≠0) ;
_____________________
As such:
4x * 35 = 7 * 8 ;
_______________________
We can divide one side of the equatiuon by "4" ; and one side by "7" :
[tex]\frac{4x*35}{4*7} = \frac{7*8}{4*7}[/tex] ;
_______________________
We can simplify the "left-hand side":
"4/4 = 1 " ; and "35/7 = 5 " ; & we are left with "x * 5" ; or "5x " .
________________________
We can simplify the "right-hand side":
"7/7 = 1 " ; and: "8/4 =2 " ; to get: "2/1" ; which equals "2".
_________________________
So; we have: " 5x = 2 " ; Solve for "x" ;
__________________________
Divide each side of the equation by "5" ; to isolate "x" on one ide of the equation; & to solve for: "x" ;
__________________________
" 5x/5 = 2/5 " ; We cancel out the "5x/5" to "1x"; which equals "x":
→ x = [tex]\frac{2}{5}[/tex] ; or, write in decimal format: "x = 0.4" ;
___________________________
\frac{2}{5}
____________________________
Hope this is helpful! Best wishes in your academic pursuits—and within the "Brainly" community!
____________________________
Answer:
[tex]x = 0.4[/tex]
Step-by-step explanation:
[tex]\frac{7}{4} x \frac{4}{7} = \frac{7}{4} x \frac{8}{35}[/tex]
Reduce the number with the greatest common factor 7
[tex]\frac{1}{4} x 4x= \frac{7}{4}x\frac{8}{35}[/tex]
[tex]x=\frac{7}{4}x\frac{8}{35}[/tex]
[tex]x=7x\frac{2}{35}[/tex]
[tex]x=\frac{2}{5}[/tex]
PLZ ANSWER QUICK IT WILL HELP A LOT!
Answer:
B
Step-by-step explanation:
But I don’t really know I struggle with this
Answer:
It's D
Jsbdjsndnsndbksjdjsjdndj
I need help again I really don't know this
Answer:
13/3 x 31/6 would be your reciprocals I'm pretty sure
Step-by-step explanation:
3x + 2y = -9
X – Y = -13
Answer:
x =-7. .y=6
Step-by-step explanation:
3x + 2y = -9
(X – Y = -13)×3
3x + 2y = -9
3x – 3y = -39
5y = 30
y=6
3x +2(6)=-9
3x=-21
x=-7
The probability that a baby will be a boy is 1/2. What is the probability that a family with five children has all boys
Answer:
1/10
Step-by-step explanation:
;)
When solving −2a≥10, you must flip the inequality sign to solve for a.
true or false
Answer:
it is true because you would divide by a negative
Consider the figure below.
What are the values of x and y?
Answers:
x = 14
y = 14
==========================================
Explanation:
The tickmarks indicate the sides x and y are the same length.
So y = x or x = y
We can use the Pythagorean theorem to say
a^2 + b^2 = c^2
x^2 + y^2 = (14*sqrt(2))^2
x^2 + x^2 = 14^2*(sqrt(2))^2
2x^2 = 196*2
x^2 = 196 ...... divide both sides by 2
x = sqrt(196)
x = 14
This must mean that y = 14 as well.
This triangle is an isosceles right triangle. We also consider it a 45-45-90 triangle because the three angles are 45, 45, and 90 degrees.
For any 45-45-90 triangle, the hypotenuse is always sqrt(2) times the leg length.
hypotenuse = leg*sqrt(2)
HELPPP ILL MARK YOU BRAINLIST
Answer:
[tex]\frac{1}{4}[/tex]
Step-by-step explanation:
Just take the larger exponent and subtract the smaller exponent and it becomes --> [tex]\frac{1}{2^{2}}[/tex]
[tex]\frac{1}{2^{2}}[/tex] = [tex]\frac{1}{4}[/tex]
Pls help 25 points asap
Answer:
A hemisphere (three-dimensional object) is generated by rotating the two-dimensional figure about the line y=2.
Step-by-step explanation:
The graph shows a figure of semicircle. When it is rotated by its top it will produce a hemisphere of diameter 4 units.