Answers
Answer:
Step-by-step explanation:
HaiaisiisisisisiisjsjsjsjjjxjxixijsbsbsRelated Questions
3. Mrs. Lopez, a counselor at Round Rock High School. found that 18% of the students had a math class first period. If there are 800 students at the school, how many students are NOT in a math class for first period?
Answers
Answer:
656 students
Step-by-step explanation:
18% of 800 is 144, and 800-144= 656 :)
Richard is planning a course for a running event. He is required to post the distance of the course in miles and kilometers. If the course Richard plans is 6.8 miles, how many kilometers is the course? (rounded to the nearest tenth) (1 mile = 1.6 Km).
A.10.9
B.6.5
C.12.5
D.17.6
Answers
Answer:
its A
Step-by-step explanation:
You throw a ball at a height of 5 feet above the ground. The height h (in feet)
of the ball after t seconds can be modeled by the equation h=-16tsqaured +44t +5
A. After how many seconds does the ball reach a height of 15 feet?
B. After how many seconds does the ball hit the ground? Round your answer
to two decimal places.
Answers
Answer:
A. After 2.5 sec and .25 sec the ball was at a height of 15 ft.
B. 2.86 sec is the time it takes to hit the ground
Step-by-step explanation:
A. let h = 15
then 15 = -16t^2 + 44t + 5
16t^2 - 44t + 10 =0
2(8t^2 - 22t + 5) = 0
2(2t - 5)(4t - 1) = 0
t = 5/2 = 2.5 or t = 1/4 = .25
After 2.5 sec and .25 sec the ball was at a height of 15 ft.
B. Let h = 0.
-16t^2 + 44t + 5 = 0
Use the quadratic formula to find t. (I will let you do that)
t = 2.85929... or t = -.10929...
t cannot be negative, so 2.86 sec is the time it takes to hit the ground
The answer of A is After 2.5 sec and 0.25 sec the ball was at a height of 15 ft and the answer of B is 2.86 sec is the time it takes to hit the ground.
A. let h = 15
What is the quadratic equation?
[tex]ax^2+bx+c=0[/tex]
a, b, c = known numbers, where a ≠ 0
x = the unknown
then 15 = -16t^2 + 44t + 5
16t^2 - 44t + 10 =0
2(8t^2 - 22t + 5) = 0
2(2t - 5)(4t - 1) = 0
t = 5/2 = 2.5 or t = 1/4 = 0.25
After 2.5 sec and 0.25 sec the ball was at a height of 15 ft.
B. Let h = 0.
-16t^2 + 44t + 5 = 0
Use the quadratic formula to find t.
t = 2.85929... or t = -.10929...
t cannot be negative, So 2.86 sec is the time it takes to hit the ground.
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Laura takes 80 steps to walk across her local park.
Laura's steps are 70 centimetres long.
Her sister Kara's steps are 80 centimetres long.
How many steps does Kara take to walk across
the park?
a. 45
b.56
c.70
d.80
Answers
Answer:
c. 70
Step-by-step explanation:
Laura’s steps are 70cm, and she takes 80 steps, which would give her a total length of 5600cm. Kara’s steps are 80cm, so we have to divide 5600cm by 80cm. This means Kara takes 70 steps to walk across the park.
The circumference of the circle shown below is 54 centimeters. Which
expression gives the length in centimeters of ?
х
120"
O A.
360
.. 545
120
y
ОВ.
120
360
54
O c.
360
-.54
120
O D.
120
• 545
360
Answers
Answer:
B
Step-by-step explanation:
120/360 54
While studying medical treatments, scientists noticed a relationship between two of the treatments when applied together. As Treatment X became more effective, Treatment Y became less effective. Which scatter plot BEST demonstrates this relationship?
Answers
Answer: C
Step-by-step explanation: it says that As Treatment X became more effective(In the graph it shows its increases) Treatment Y became less effective. The graph shows as one is increasing other decrease.
The scatter plot C best demonstrates this relationship.
What is an inverse relation?An inverse relation is a relation in which value of two variable is inversely proportional to each other.
Given,
When treatment X became more effective, treatment Y became less effective.
Also, when treatment Y became more effective, treatment X became
less effective.
Therefore, variables X and Y follows inverse relationship.
Hence, Graph between X and Y is correct in option C.
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change 45% into decimal
Answers
Evaluate the expression. 0.1×( – 0.9+ – 0.2÷ – 0.5) Write your answer as an integer or a decimal. Do not round.
Answers
The solution of expression [tex]0.1 \times (- 0.9 + - 0.2 \div - 0.5)[/tex] by using the BODMAS rule would be [tex]- 0.05.[/tex]
Used the concept of the BODMAS rule which states that,
The correct order in which to solve maths problems. Bodmas stands for B-Brackets, O-Orders (powers/indices or roots), D-Division, M-Multiplication, A-Addition, S-Subtraction.
Given that the expression is,
[tex]0.1 \times (- 0.9 + - 0.2 \div - 0.5)[/tex]
Solve the above equation by using the BODMAS rule,
[tex]0.1 \times (- 0.9 + - 0.2 \div - 0.5)[/tex]
It can be written as,
[tex]0.1 \times [- 0.9 + (- 0.2 \div - 0.5)][/tex]
[tex]0.1 \times [- 0.9 + 0.4][/tex]
[tex]0.1 \times - 0.5[/tex]
[tex]- 0.05[/tex]
Therefore, the solution of the expression is [tex]- 0.05.[/tex]
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52nd term of arithmetic sequence 5,9,13
Answers
Answer:
209
Step-by-step explanation:
the Nth term is 4n plus 1
substitute 52 into n
4 times 52 is 208
208 plus 1 is 209
Answer:
201
Step-by-step explanation:
52 (amount of terms) - 2 (terms shown other than 5) = 49 * 4 = 196 + 5 = 201
answer asap ----------------------
Answers
Answer:
BC ≈ 15.01
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan65° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{BC}{7}[/tex] ( multiply both sides by 7 )
7 × tan65° = BC , then
BC ≈ 15.01 ( to the nearest hundredth )
PLZZZZZZZZZZ HELP ITS FOR A TEST!!!The question is in the blue, the way I want you to solve it is the second one
Answers
How many kilograms are equivalent to 450 grams?
Answers
Answer:
0.45
Step-by-step explanation:
Answer:
0.45 kg
Step-by-step explanation:
Given that a - b = 3 and ab=5, find, without the use of a calculator,
the value of a^2 +b^2?
Answers
Answer:
19
Step-by-step explanation:
a-b=3 ab=5
a²+b² = (a-b)²+2ab ( a general formula)
= 3²+2×5
=9+10 = 19
The hypotenuse of a right triangle measures 12 cm and one of its legs measures 10
cm. Find the measure of the other leg. If necessary, round to the nearest tenth.
Answers
Answer:
6.6
Step-by-step explanation:
Delta math...if you are rounding to the nearest tenth!
The length of other leg of a right triangle is 6.633 cm
What is a right triangle?A triangle in which one of the interior angles is 90° is called a right triangle. The longest side of the right triangle, which is also the side opposite the right angle, is the hypotenuse and the two arms of the right angle are the height and the base.
To find the length of hypotenuse the formula is c² =a² + b² , where c is hypotenuse and a, b are sides of triangle
From the question hypotenuse(c)= 12 cm and one of its leg(b) =10cm
12² =a² +10²
144= a² + 100
44= a²
a= 6.633
Thus the length of other leg of a right triangle is 6.633 cm
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A recliner chair is normally $750 is discounted to $600. What is the percent discount?
Answers
Answer:
20%
Step-by-step explanation:
Discount = Original Price x Discount %/100
Discount = 750 × 20/100
Discount = 750 x 0.2
You save = $150.00
Final Price = Original Price - Discount
Final Price = 750 - 150
Final Price = $600.00
Answer:
20%
Step-by-step explanation:
Just multiply 750 by 20%, and you will get 150. Subtract and you will get 600. That means my answer is correct.
Good Luck!
FIND THE THE
MISSING ANGLE:
70°
30° -
Answers
Which set does not contain a rational number?
Answers
Answer:
[tex]\sqrt{21}[/tex], π, [tex]\sqrt{75}[/tex]
Step-by-step explanation:
this set contains only irrationals
11) Determine the distance between -1 and -7. A) -8 units B) -6 units C) 6 units D) 8 units
Answers
Answer:
c
Step-by-step explanation:
Answer:
-6
Step-by-step explanation:
x-intercept of 5 and a y-intercept of -4.
Write this street's equation in slope intercept form.
Answers
Answer:
y = 5x -4 or you could also write y = 5x + -4
it's still the same thing.
Step-by-step explanation:
Calculaţi suma a trei numere naturale ştiind că: primul este egal cu produsul numerelor 31 şi 75, al doilea reprezintă din primul, iar al treilea reprezintă din diferenţa primelor două numere.
Raspundeti repede pls!Dau coroana!!!
Answers
Answer:
fartzzzzzzzzzzzzzzzzzzzzzz
Step-by-step explanation:
Answer:
DABABY CONVERTIBLE GANG :)
Dakota paid $48.60 for a new backpack, and this included an 8% sales tax. What is the price before tax.
Answers
Answer:
The price before sales tax was added was $9.72.
Step-by-step explanation:
48.60 x 0.8 = 38.88 (Sales tax price)48.60 - 38.88 = 9.72 (Price before sales tax)The volume of the prism shown below is 140 cubic meters. Find the height of the prism
Answers
Answer:
5
Step-by-step explanation:
First multiply 7 and 4
7 * 4 = 28
Then divide 140 by 28
140/28 = 5
Height is 5
HELP!!! answer quickly pls
Answers
Answer:
X-axis
Step-by-step explanation:
HELP WILL MARK BRAINIEST NO LINKS!!
Answers
Answer:
length - 80
width - 80
Step-by-step explanation:
95*2 = 190
65*2 = 130
190+130 = 320
320/4 = 80
80 x 80 = 6400
95 x 65 = 6175
6400 > 6175
80 x 4 = 320 = both perimeters
Given that a = -2 and b = 7 ,evaluate the following algebraic expression
(1) a(b2 -a)
Answers
Answer:
-2(14--2)
-2*19
38.
I think this is the correct answer. Thanks
Answer:
Answer is -32.
Step-by-step explanation:
a= -2
b=7
Expression: a(b2-a)
-2(7*2--2) (Place 'a' and 'b' values)
= -2(14+2) (Solve inside the bracket)
= -28-4 (Multiply -2 with the values inside the bracket)
= -32 (ans)
Thank you!!
Hope it helps!! (^-^)
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FACTOR COMPLETELY f(x) = 4x^2 + 8x − 5
Answers
Answer:
(2x - 1)(2x + 5)
Step-by-step explanation:
Start by finding factors of 4 and factors of 5, then find out which ones will add or subtract to the middle term, 8. You get (2x -1)(2x+5).
Hopefully this helps - let me know if you have any questions!
(a+2)(a-1) - (a+1)(a-2), if a = 2
Answers
Answer:
4
Step-by-step explanation:
(a+2)(a-1) - (a+1)(a-2)
put a=2
(2+2)(2-1) - (2+1)(2-2)
4*1 -3*0
4-0
4
PLEASE HELP I WILL MARK BRAINLIEST
Answers
Answer:
I think its d
Step-by-step explanation:
Someone please help
Answers
a cone has a height of 4 in and a radius of 6in. what is the volume of the cone
Answers
Answer:
150.8
Step-by-step explanation:
The formula for the volume of a cone is V=1/3hπr². Trust me