How long will it take a rocket traveling at 8 km/s to reach 20 km? (please include the equation)
Answer:
Step-by-step explanation:
Use the second kinematic formula
[tex]x_f-x_i=V_it+\frac{1}{2}at^2\\20=8t+\frac{1}{2}(9.8)t^2\\4.9t^2+8t-20=0[/tex]
Apply the quadratic formula to solve for time. The negative value does not matter because time cannot be negative, its impossible.
I got a value of t = 1.363 seconds
i need help please and thanks
Answer:
the answer is associative
Step-by-step explanation:
elyse has $18 on a gift card that she can use to rent movies online . the graph at the right shows the amount of money remaining on her gift card based on the number of movies she rents . find the unit rate of the graph , and describe what it means in the context of the situation.
a kindergartden class has 9 girls and 11 boys in class . what is the percent of the class is girls
Answer:45%
Step-by-step explanation:
Find the area. Use 3.14 for pi
218 is the answer i think
HELP I NEED HELP ASAP
The expression 12x^2-19x+4 represents the number of fish in Ann's pond. The
expression 10x^2+x-19 represents the number of fish in Samantha's pond.
Which expression represents the total number of fish in the two pond?
A. 22x^2+20x+23
B. 2x^2+20x-23
C. 2x^2-20x+23
D. 22x^2-18x-15
Answer:
D. 22x^2-18x-15
Step-by-step explanation:
12x²-19x+4 + 10x²+x-19
22x²-18x-15
I would really appreciate some help! Im being timed right now :( tysm! :)
Answer for 7: C
Answer for 9: A
Step-by-step explanation for 7:
Because the variable is an exponent, we know there are no real numbers which cannot be placed in the exponent. Therefore, the domain is all real numbers.
Step-by-step explanation for 9:
Test a few values for x. Notice as the x value gets higher, the y value gets exponentially higher. Notice as the x value gets lower, the y value approaches 0, but no value of x will have y equal to or less than 0. Therefor, the asymptote, or line that cannot be crossed is 0 - making A the correct solution.
Sandra can type 180 words in 3 minutes. At this rate, how many words can she type in 5 minutes?
Answer:
300
Step-by-step explanation:
180÷3=60
60x5=300
Answer: 300 words in 5 minutes
Step-by-step explanation:
divide 180 by 3 (equals 60)
multiply 60 by 5 to get your answer (300)
please help me ASAP this is hard
Answer:
31/40
Step-by-step explanation:
you only got 9 right side up, so you'll have to add the numbers that aren't right side up together and divide it by 40 since the total tosses is 40.
Translate this sentence into an equation. The sum of 11 and Greg's height is 60. Use the variable g to represent Greg's height.
Answer:
g+11=60
Sum=11
Sum= +
Height is =60
9 + 9h
=
10h + 2 is this infinite solution
Answer:
no, h=7
Step-by-step explanation:
9+9h = 10h+2
9=h+2
7=h
need help please show your work
find the missing angles of triangles
Answer:
angle: 71
x = -3
Step-by-step explanation:
step 1: 180-(55+54) = 71
step 2: x+74=71 (subtract 74 from both sides)
step 3: x=-3
step 4: -3+74=71
Write an equation in point-slope form for the line that passes through (-4, 5) and has a slope of 1/2 .
Answer:
y=1/2x+7
Step-by-step explanation:
y-5=1/2(x-(-4))
y-5=1/2x+2
y=1/2x+7
1) The regular price of a shirt is $15. A store is offering a discount of 30%. What is the
discount price of the shirt? [Think: what are you finding, the part (discount), the percent,
or whole (original price)]
Answer:
$10.50
Step-by-step explanation:
15 times 30 = 4.5
15-4.5=10.50
Caroline bought movie tickets for three Children and a bucket of popcorn for $9.50. If she spent a total of $35.75, how much was each movie ticket?
Answer:
$8.08
Step-by-step explanation:
First subtract 9.50 from 35.75 to get
24.25
Then divide 24.25 by 3 to get
Approx $8.08
1. Marie took out a loan for $250 for a Nintendo Switch. She plans to pay the 1 point
loan off in 18 months. At an annual interest rate of 7%, how much will Marie
have paid altogether for the Nintendo Switch? *
Answer: $276.25
Step-by-step explanation:
250 times .07 = 17.5
17.5 times 1.5 = 26.25
250 + 26.25 = 276.25
PLEASE HELP!!!!
Will give Brainliest!!!
Write the equation of the line passing through the points (-1, 2) and (3, 4)
A)
y = 2x - 2
B)
y = 2x - 10
+
C)
y =1/2x + 5/2
D) y=1/2x-5/2
Answer:
D
Step-by-step explanation:
y_2 - y_1 / x_2 - x _1
4 - 2 / 3 - (-1) = 2/4 = 1/2
y +4 = 1/2 (x + 3) distributive property
y + 4 = 1/2x + 1.5
y= 1/2x - 5/2 subtraction (you subtract 4 from both sides) (-5/2 = -2.5)
therefore your equation is y = 1/2x - 5/2
hope this helps :)
Helppppppppp. Me. Plzzzzzz
Answer:
the answer would be A because the x's are 1's
what fraction is equivalent 4/4
Answer:
the answer is one
Step-by-step explanation:
1.......
Answer:
A fraction like 4/4 is called an "improper fraction". An improper fraction is one in which the numerator (the top number) is greater than or equal to the denominator (the bottom number). Another example of an improper fraction is 8/7 in which the numerator, 8, is greater than the denominator, 7.
Step-by-step explanation:
What is the slope of this line?
(sorry for the quality.)
Answer:
slope = - 1
Step-by-step explanation:
Calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 8,6) and (x₂, y₂ ) = (0, - 2) ← 2 points on the line
m = [tex]\frac{-2-6}{0+8}[/tex] = [tex]\frac{-8}{8}[/tex] = - 1
I NEEEED YOUR HELP DOES ANYONE KNOW HOW TO COMPLETE THISSS
Answer:
4/5
Step-by-step explanation:
Just divide both parts of the fraction by 7
28/7=4
35/7=5
Answer:
4/5
Step-by-step explanation:
Divide both the numerator and denominate by 7
28/7=4
35/7=5
Convert 14% to an
equivalent decimal.
A 5 foot tall pole casts a 3 1/3 foot shadow. At the same time an oak tree casts a 20 foot shadow. How tall is the tree?
Answer:
30 feet tall
Step-by-step explanation:
Set up a proportion where x is the height of the tree
[tex]\frac{5}{3\frac{1}{3} }[/tex] = [tex]\frac{x}{20}[/tex]
Cross multiply and solve for x:
100 = 3[tex]\frac{1}{3}[/tex]x
30 = x
So, the tree is 30 feet tall
What is the value of x?
Answer:
I'm so sorry I don't know how to do this
Step-by-step explanation:
in the diagram the measure of angle one is 3X the measure of angle two is 12 X what is the measure of angle 4
Answer:
144°
Step-by-step explanation:
m<1 =3x
m< 2= 12x
1&2 are supplementary angles, so
3x+12x= 180
15x=180
x= 12°
measure of angle 4 equals the measure of angle 2
because they're head opposite angles
m<4= 144°
please help quick!! pythagorean theorem!
Answer: x=3
Step-by-step explanation:
4^2+b^2=5^2 25-16=9 sqrt of 9 is 3
Which expression is the same as 1/8 of 3?
1. 3×8
2. 8÷3
3. 3÷8
4. 1/3×1/8
Answer:
The correct answer should be 3÷8
Answer:
3÷8
Step-by-step explanation:
Write the equation of the line in slope-intercept form: y=mx+b
Given: Point (-3,-1) Slope: 0
Answer:
Y=-1
Step-by-step explanation:
The slope of line is zero
can someone please help
Answer:
x=3, y= - 2
Step-by-step explanation:
4x + 3y = 6
x-3y= 9
x=9+3y
4.(9+3y)+3y=6
36+12y+3y=6
15y = - 30
y = - 2
=> x= 9+3y
x= 9+ 3.(- 2)
x= 3
(25-a) divided by 7=3
Answer:
a = -0.57
rounded to the nearest tenth: a = -0.6
Step-by-step explanation:
(25 - a) ÷ 7 = 3
25 - a ÷ 7 = 3
25 ÷ 7 - a = 3
3.6 - a = 3
3.57 - 3.57 - a = 3 - 3.57
a = -0.57
The value of "a" in the equation (25 - a) ÷ 7 = 3 is 4.
To find the value of "a" in the equation (25 - a) ÷ 7 = 3.
we can solve for "a" by isolating it on one side of the equation.
(25 - a)/7 = 3.
Multiply both sides of the equation by 7 to get rid of the division:
7(25 - a)/7 = 3 × 7.
25 - a = 21.
To isolate "a," subtract 25 from both sides of the equation:
25 - a - 25 = 21 - 25.
Simplifying further, we get:
-a = -4.
Multiply both sides of the equation by -1 to solve for "a":
-1 × (-a) = -1× (-4).
a = 4.
Therefore, the value of "a" in the equation (25 - a) ÷ 7 = 3 is 4.
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