Answer:
x < 7
Step-by-step explanation:
Given
2x - 5 < 9 ( add 5 to both sides )
2x < 14 ( divide both sides by 2 )
x < 7
(b)
4 cm
a
3 cm
4 cm
15 cm
8 cm
Volume = 540 cm
Answer:
are you trying to look for the height or radius?
if you're looking for the height then you'll have to divide the volume by pi and the radius squared
if you're looking for the radius then you'll have to divide the volume by pu and the height and do the squareroot over the whole equation
Jlvesh is analyzing the flight of a few of his model rockets with various equations. In each equation, h is
the height of the rocket in centimeters, and the rocket was fired from the ground at timet = 0, where t is
measured in seconds.
Jivesh also has a more powerful Model B rocket. For this rocket, he uses the equation h=-90t4 + 300t.
When is the height of the Model B rocket 250 centimeters? Round your answers to the nearest
hundredth.
After t =
seconds, the rocket will have reached a height of 250 centimeters.
Answer:
After t = 1.67 seconds, the rocket will have reached a height of 250 centimeters.
Step-by-step explanation:
Given
[tex]h = -90t^2 + 300t[/tex] --- correct expression
Required: When does height = 250 cm
To do this, we have:
[tex]h = 250[/tex]
This gives:
[tex]250 = -90t^2 + 300t[/tex]
Rewrite as:
[tex]90t^2 - 300t + 250 = 0[/tex]
Divide through by 10
[tex]9t^2 - 30t + 25 = 0[/tex]
Expand
[tex]9t^2 - 15t - 15t + 25 = 0[/tex]
Factorize:
[tex]3t(3t - 5) -5(3t - 5) = 0[/tex]
[tex](3t - 5)(3t - 5) = 0[/tex]
This gives:
[tex]3t - 5 = 0[/tex]
Solve for 3t
[tex]3t = 5[/tex]
Solve for t
[tex]t = \frac{5}{3}[/tex]
[tex]t = 1.67s[/tex]
Calculate the total surface area of the pyramid. Show your work!
Answer: 22.44
Step-by-step explanation:
Base × Height /2 → (3 × 2.24)/2
3.36 · 4 = 13.44
13.44 + 3²
22.44
A jar contains 10 red marbles, 30 blue marbles, 10 green marbles, and 35 orange marbles. Find the probablilty of picking a marble.
Answer:
6/17
Step-by-step explanation:
The amount of blue marbles is 30, over the total number of marbles, which is 85. 30/85 simplifies to 6/17, which is the probability.
Hopefully this helps - let me know if you have any questions!
Maths equation need help please
Answer:
I FIGURED IT OUT!
Step-by-step explanation:
a = 3
b = 3
c = 5
d = 2
give me brainliest
Please hurry I need this now !!!
1.What is the positive solution to this equation?
x2 – 12 = -11x
a. -12
b. 12
C. -1
d. 1
Answer:
b. 12
Step-by-step explanation:
Answer:
either a or d because they are both correct.
Step-by-step explanation:
A right square pyramid has a base area of 200 square inches. Find its volume, if its height is 6 inches.
A. 33 in.
B. 400 in.
C. 3,600 in.
D. 1,200 in.
Step-by-step explanation:
400 in. is the correct answer
For a pyramid, volume= (1/3) x b x h where
B= base area, and
h= height .
So, volume= (1/3) x (200in^2) x (6in) = 400in^3.
- Chilio
Please help !
50 points !
Use the quadratic regression feature of a graphing calculator to find a quadratic model. Round to the nearest hundredths place.
A. Y=0.06x^2+0.31+4
B. Y=-4.03x^2+0.32x+8.19
C. Y=0.06x^2-0.31x-4
D. Y=4.03x^2-0.32x-8.19
Answer:
It is A
Step-by-step explanation:
Answer:
its A he's right
Step-by-step explanation:
The radius of a circle is 1 inch. What is the area?
r=1 in
Give the exact answer in simplest form.
Answer:
3.14 square inches or π square inches
Step-by-step explanation:
The radius of a circle is 1 inch. What is the area?
r=1 in
The formula for the area of a circle is given as:
πr²
The radius (r) = 1 inch
Hence,
Area of the circle = π × 1²
= 3.1415926536 square inches
Approximately = 3.14 square inches or we can say that the Area of the circle = π square inches
ill give brainliest
Write and solve an equation to determine the unknown variable. Then find the measure of the unknown angles.
Your options are:
A. x + 7 + 2x - 40 = 180 One angle is 78 degrees and the other is 102 degrees
B. x + 47 = 180 The unknown angles are both 133 degrees
C. x + 7 + 2x - 40 = 90 One angle is 48 degrees and the other is 42 degrees
D. x + 7 = 2x - 40 The unknown angles are both 54 degrees
Answer:
Answer:
To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.
HELP PLSSSSSSDSSSSSSSSSSSSSSSSSSS
Answer:
8 inches.
Step-by-step explanation:
Just count how many units there are between the two points :)
11. A bag contains 2 blue marbles and 2 green marbles. What is the probability of drawing a blue marble followed by a green marble, without replacing the first marble before drawing the second marble?
Please show work ty
Answer: your answer should be 50%
Step-by-step explanation: This is because there are only four marbles in the bag total and only 2 are blue and only 2 are green so your chances of pulling out either is 50%
Answer:
33%
Step-by-step explanation:
2 blue marbles + 2 green marbles = 4 marbles
1st draw for blue: 2/4 (2 blue marbles out of 4 marbles)
2nd draw for green: 2/3 (1 less marble from 4, marble not put back in)
2/4 x 2/3 = 4/12 = 1/3 = 0.33 or 33%
Please help.
Is algebra.
Answer to question 1 is D
answer to question 2 is A
Can I get help with number 19
Answer:
D
Step-by-step explanation:
x = 2 and y = -7
Plug those values into the equation:
2(2) - (-7) = 11
if there's a how and a guy picks her up who's getting abused
A culture of bacteria doubles every hour. If there are 500 bacteria at the beginning, how many bacteria will there be after 9 hours
A. 256,000
B.40,500
C. 9,000
D. 4,500
(I NEED ANSWERED ASAP ) this my same question from the first one )
solve for x round to your nearest tenth
Mark sorted a set of shapes into two different categories. Explain, what two attributes were used to sort the shapes. help please!!
Group A parallelogram, Group B Quadrilateral.
Answer: Parallelogram and Quadrilateral.
The two ways of classifying shapes are: Parallelogram and Quadrilateral.
There are different ways to classify an item.
How do one identify the type of quadrilateral?Quadrilaterals can be known by;
It is a polygon with four sides.
Since rectangle is known to be a parallelogram that has four right angles.
A trapezoid is regarded as a quadrilateral with only one pair of parallel sides.
And Parallelograms are known to be shapes that has four sides with only two pairs of sides that are known to be parallel.
So we conclude that Group A parallelogram, and Group B Quadrilateral.
learn more about Quadrilaterals from;
brainly.com/question/16691874
#SPJ2
i need help with this questionnnn
A line that a graph approaches but does not reach. It may be a vertical, horizontal, or slanted line.
first two letters as
Answer:
asymptote
Step-by-step explanation:
The weights of four puppies are shown in pounds
9.5
9 3/8
9.125
9 3/4
Which list shows these weights in order from greatest to least?
9 3/4 9.5 9 3/8 9.125
9.5 9 3/8 9 3/4
9.125 9.125 9 3/8 9.5 9 3/4 9 3/4 9 3/8 9.5 9.125
How many real solutions exist for this system of equations? Y = -x + 1 y = -x2 + 4x − 2 A. Zero B. One C. Two D. Infinite
Answer:
Two solutions
Step-by-step explanation:
Given the functions Y = -x + 1 y = -x² + 4x − 2
Since they are both y values, we will equate them to have:
-x+1 = -x² + 4x − 2
Equate to zero
x²-x-4x+1+2=0
x²-5x+3 = 0
Since the resulting equation is quadratic (highest degree being 2), hence there will be two solutions to the equation
Find the total surface area of the rectangular prism
Answer:
124
Step-by-step explanation:
To find the surface area, we add the area from all faces or the prism.
the first face, we can put 8 times 2.5, which is 20. There are two of these faces, so we have 40 in our area so far.
next the other face. 4 times 2.5 is 10, and there are two of these faces. 60 in out area.
now the top and bottom faces. 8 times 4 is 32. there are two of these faces, and 60 +64 = 124
Plot the x-intercepts, the y-intercept, and the vertex of the graph (Must use Desmos!)
Answer:
x-intercept: (-1,0)
y-intercept: (0,3)
Vertex: (-2,-1)
Step-by-step explanation:
Please help me to finish the table! D:
Answer: 32, 27, 20
Step-by-step explanation: This is a quadratic table.
What is the value of -5^6?
Answer:
-15625
Step-by-step explanation:
Hope this helps!
Answer:
-15,625
Step-by-step explanation:
-5^6 = -(5^6) = -(5 * 5 * 5 * 5 * 5 * 5) = -15,625
Please answer^^ I will give you brainlist!
Yes 5th grade math :clown face:
Answer:
Venn is the circles and the tree is the green one (ignore the other thing on tree)
xf(3)+3f(x)=x+6 f(6)=?
Which shows a correct comparison? A: 5 milliliters > 50 liters B: 2 liters < 200 milliliters C: 100 liters < 1,000 milliliteres D: 3,200 milliliters > 3 liters
Answer:
d
Step-by-step explanation:
Note that
> means greater than
< means less than
for example : 2 < 3 means 2 is less than 3
3 >2 means 3 is greater than 2
To determine which comparison is better we have to convert litre to millimetre
1 litre = 1000mm
A 5 mm > (50 x 1000)
5 mm > 50,000
5 is not greater than 50,000
B. (2 x 1000) < 200 mm
2000 < 200
2000 is not less than 200
C. (100 x 1000) < 1,000
100,000 < 1000
100,000 is not less than 1000
D. 3200 > (3 X 1000)
3200 > 3000
3200 is greater than 3000
NO LINKS PLZ, BUT I RLLY NEED HELP!
Answer:
Step-by-step explanation:
b