Answer:
90
Step-by-step explanation:
60 kmhr for an hour and a half
i hour 60 km
half hour 30 km
60 + 30 =90
PLEASE HELP 50 POINTS
Which of the following is a solution of y + x < -5?
(-2, -3)
(-4, -2)
(-3, -2)
(-1, -3)
Answer: The 4th option= -1, -3
Step-by-step explanation: Here, if y = -1 and x = -3. The equation would be: (-1) + (-3)= -1 -3 = -4
Now we know that -4 is greater than -5.
Some may think that -4 is smaller than -5 nut remember that the numbers are in minus form, so if u put them in a number line, then -4 is greater than -5.
Thanks.
Can i get some help ?
Answer:
Right Angle.
Step-by-step explanation:
A right angle (90°; /2 radians) exists between a tangent to a circle and the radius across the point of contact. To put it another way, the tangent and radius are perpendicular to one another.
Answer:
I would day right angle. It sounds like the best answer
Step-by-step explanation:
A mean weight of 2.2 pounds is computed for a random sample of 50 catfish from a lake....,,
What can you infer from this random sample?
A)You infer that the mean weight of all catfish is close to 2.2 pounds.
B)You infer that the mean weight of all catfish is exactly to 2.2 pounds.
C)You infer that the mean weight of catfish in the lake is close to 2.2 pounds.
D)You infer that the mean weight of catfish in the lake is exactly to 2.2 pounds.
Answer:
You infer that mean weight of catfusf in the lake is close to 2.2lbs
Step-by-step explanation:
Because it's a random sample of 50.
So plenty of catfishes left out of surveySo it lends to variation of mean .But mean remains closer to 2.2A triangular prism has a triangular face with a base of 7 meters and a height of 10 meters. It’s volume is 259 cubic meters. What is the length of the triangular prism. (will mark brainliest)
What is the length of the triangular prism is 3.7
259 / 10 = 25.9
25.9 / 7
= 3.7
6. Andy scored 90 on the last history exam. He scored 81 this time. By what percent did his score decrease?
Answer:
His score decreased by 9 percent this time.
Step-by-step explanation:
From his first history exam he had a score of 90 percent. The difference between his first score and present score is given by
90 - 81 = 9
#19. find the perimeter and the area of the figure
Answer:
Perimeter = 56 m
Area = __ m^2
Step-by-step explanation:
Perimeter = ___ m
Area = __ m^2
To find Perimeter, you have to add up all the sides of the shape,
5 + 5 + 5 + 11 + 7 + 7 + 16
= 56 m
Perimeter = 56 m
To find area, you have to multiply length times width,
5 × 5 = 25
7 × 16 = 112
112 + 25 = 137
Area = 137 m^2
Therefore the perimeter of this shape is 56 m and the area of this shape is 137m^2.
The figure below shows a triangular piece of cloth:
What is the length of the portion BC of the cloth? (1 point)
Answer:
BC / 8 = sin 35° by definition.
Step-by-step explanation:
George is solving the equation below by finding successive approximations. He started from a graph where he found the solution to be between 5 and 6. Using the lower and upper bounds from the graph, George did the following work for the first iteration. Step 1 Rewrite the equation so that it equals zero. Step 2 Evaluate the rewritten equation at the lower and upper bounds. Since the solution to the original equation is represented by a zero, one of the bounds should yield a negative difference and the other should yield a positive difference. Step 3 Take the average of the lower and upper bounds from the graph. Step 4 Evaluate the rewritten equation at . Step 5 Since this value of x yields a negative difference, use it to replace the previous upper bound that yielded a negative difference, . So, the bounds are now and . In what step, if any, did George make his first mistake? A. In step 1, George should have subtracted in the opposite order to set the equation equal to 0. B. In step 5, George should have used as the new lower bound. C. George made no mistakes, and his work is correct. D. In step 3, George should have averaged the two differences instead of the two bounds.
The mistake made by George is; D:George should have averaged the two differences instead of the two bounds.
How to Solve Successive Approximations?In Mathematics, successive approximation can be defined as a classical method that is used in Calculus for solving integral equations or initial value problems.
In this question, George started the first iteration of successive approximation by using the lower and upper bounds of the graph. However, we can deduce that George made a mistake instep 5 because he should have used x = 3/2 as the new upper bound.
Read more about Successive Approximations at; brainly.com/question/25219621
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Find the area of the irregular figure.
4 in.
6 in.
A = [? ]in.²
10 in.
7 in.
11 in.
6 in.
Answer:
160 square inches
Step-by-step explanation:
You can split the irregular figure up into regular shapes:
the top 4x6 inch rectangle
the middle section can be a 18x6 rectangle (added 7+11 for the length)
the bottom 4x7 rectangle (sibtracted 10-6 for the width)
Then, find the area of each section with the equation A = lw.
A= 4(6) = 24 square inches
A = 18(6) = 108 square inches
A = 4(7) = 28 square inches
Add these areas up to get the total area of the irregular figure.
24 + 108 + 28 = 160 square inches
Which relations are functions?
Choose all answers that are correct:
Answer:
B and C are functions.
Step-by-step explanation:
B and C are functions because they satisfy the Vertical Line Test. A and D are not functions because they do not satisfy the Vertical Line Test.
Darion picks 16 grapefruits off
a tree in his backyard. He puts
4 grapefruits in each bag. How
many bags does he need?
Answer:
he would need 4 bags
Step-by-step explanation:
16 divided by 4 is 4
you can count by 4 to find your answer
PLEASE HELP ASAP!!
Describe the transformations from the parent function, and define the function of the following graph.
Answer: Vertical stretch by a factor of 5.8 , reflection across x-axis ⇒ answer B
Step-by-step explanation:
* Lets revise the vertical and horizontal stretch with reflection
- A vertical stretching is the stretching of the graph away from the
x-axis
- If k > 1, the graph of y = k•f(x) is the graph of f(x) vertically stretched
by multiplying each of its y-coordinates by k.
- If k should be negative, the vertical stretch is followed by a reflection
across the x-axis
- A horizontal stretching is the stretching of the graph away from
the y-axis
- If 0 < k < 1 (a fraction), the graph of y = f(k•x) is f(x) horizontally
stretched by dividing each of its x-coordinates by k.
- If k should be negative, the horizontal stretch or shrink is followed
by a reflection in the y-axis
* Lets solve the problem
∵ G(x) = sin x
∵ F(x) = -5.8 sin x
∴ F(x) = -5.8 G(x)
- From the rule above
∴ G(x) is stretched vertically by scale factor -5.8
∵ The scale factor is negative
∴ The vertical stretch is followed by a reflection across the x-axis
* The transformation is:
Vertical stretch by a factor of 5.8 , reflection across x-axis
A soup can, shaped like a cylinder, has a diameter of 3.5 inches and a height of 5 inches. Each serving of soup is 15 cubic inches. If a can of soup this size costs $1.99, what is the cost for each serving of soup? Round to the nearest cent.
Answer: The answer to your question is Cost of a serving = $0.62
Step-by-step explanation:
Data
diameter = 3.5 in
height = 5 in
each serving = 15 in³
Cost of the can = $1.99
Process
1.- Calculate the volume of the can
Volume = πr²h
-Substitution
Volume = (3.14)(3.5/2)²(5)
-Simplification
Volume = (3.14)(3.062)(5)
-Result
Volume = 48.08 in³
2.- Use proportions and cross multiplication to find the cost of a serving.
48.08 in³ ---------------- $1.99
15 in³ ---------------- x
x = (15 x 1.99)/48.08
x = 29.85/48.08
x = $0.62
The second showing started 20 minutes late. Will the second
showing be over by 6:30 P.M.? Explain why your answer is reasonable
No, the second showing would be over at 6:50 because it started 20 minutes late. The time is delayed 20 minutes because it started 20 minutes later.
3x∧2±6x±x±20 sole by factorization
Answer:
just look at the algebra formula and simplify to get your answer. Remember to use your powers well
determine the equation for the given information
point-slope form
y - y₁ = m(x - x₁)
[tex]y-1=-\frac{1}{2}(x-8)\\\\y-1=-\frac{1}{2}x+4\\\\y=-\frac{1}{2}x+5[/tex]
The answer is A) Choice A.
I was confused on how to write the quadratic in standard form
[tex]\\~~~~~3x^2 +4x +7 = -1\\\\\implies 3x^2 +4x +7 +1 = 0\\\\\implies 3x^2 +4x +8 = 0\\\\\text{It is now in the standard form of quadratic equation}~( ax^2 +bx +c = 0)\\[/tex]
Can you guys help me find x and y
x -2y =-3
8x -6y =16
-2y -2y = 20
x - 7y = 14
Step-by-step explanation:
x - 2y = -3,____1 , 8x - 6y = 16____ 2
x - 2y = -3
x = 2y -3 ____ equation 3
eqn 3 in 2
2=> 8x - 6y = 16
8(2y-3) - 6y = 16
16y - 24 - 6y = 16
10y = 16 + 24
10y = 40
y = 40 / 10
y = 4
y=4 in eqn 3
3=> x = 2y - 3
x = 2(4) - 3
x = 8 - 3
x = 5
x = 5 , y = 4
-2y-2y = 20 , x - 7y = 14___ 1
-2y-2y = 20
-4y = 20
y = 20/ -4
y = -5
y = -5 in eqn 1
1=> x - 7y = 14
x - 7(-5) = 14
x - (-35) = 14
x + 35 = 14
x = 14 - 35
x = -21
x = -21 , y = -5
e + 20 ≥ 33
Please help me solve this!
( solving one-step inequalities )
Answer:
=> e is greater than Or equal to 13
Answer:
Hey I don't know if this helps but I your trying to see if the equality is true of false it would be false
Graph a line to represent the linear equation y=32x−6.
Answer:
The slope is 32 while the y-intercept is (0,-6)
Step-by-step explanation:
.......
The area of the triangle below is 15 square centimeters. What is the length of the
base? Express your answer as a fraction in simplest form.
Answer:
5/8
Step-by-step explanation:
Area for a triangle
A=1/2bh
15/32=3/4h
5/8 = h
What fraction is equal to 0.4 (with a line over the four)
A. 44/9
B. 4/99
C. 4/9
D. 9/4
Answer:
4/9 = 0.4 with a line over the 4
Step-by-step explanation:
Answer:
C. 4/9
Step-by-step explanation:
On dividing 4/9 :
4/90.444....0.4 (bar on the 4)Option C gives the right answer.
Will mark brainlist to whoever answers first, full explanation please
Reflection- It flips the image over a line to create a mirror image
Rotation - It spins a figure around a point
Translation- It slides the figure in a different direction
Dilation- It enlarges or reduces a figure
How many cubes are needed to fill the prism made by the net?
16 cubes are needed to fill in the prism mad by the net.
Sure hope this helps you
find the area of the nearest hundredth use 3.14 for π
Answer:
254.34
Step-by-step explanation:
3.14 x 9^2
or
3.14(9 x 9)
hope this helps
have a good day
The bases of Triangle A and Triangle B are equal. The ratio of the height of
Triangle A to the height of Triangle B is 4 : 5. If the height of Triangle A is
16 cm and its base is 12 cm, what is the area of Triangle B?
Answer:
A = 120 cm²
Step-by-step explanation:
The 4 part of the ratio relates to the height of triangle A , then
16 ÷ 4 = 4 cm ← value of 1 part of the ratio, then
5 parts = 5 × 4 cm = 20 cm
The area (A) of triangle B is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the height )
Here b = 12 and h = 20 , then
A = [tex]\frac{1}{2}[/tex] × 12 × 20 = 6 × 20 = 120 cm²
A car travels 150 miles in 3 hours. What is the rate of the car in miles per hour?
Answer:
50 miles per hour
Step-by-step explanation:
150 miles=3 hours
150/3=50
50miles 1 hour
100 miles 2 hours
150 miles 3 hours
each hour is 50 miles
Answer:
The rate of the car is 50 miles per hour
Please help ASAP
Will mark as brainliest answer
Answer:
i hope this will help you
Answer:
a = 1b = √15Step-by-step explanation:
An equation is solved for one of the variables by undoing the operations done on that variable. Here, we can solve for 'a' and solve for 'b' to find the desired values.
__
value of aSolve for 'a', then substitute the value of 'b'.
[tex]\sqrt{9a}=\dfrac{b^2-3}{2}\\\\9a=\left(\dfrac{b^2-3}{2}\right)^2=\dfrac{(b^2-3)^2}{4}\\\\a=\dfrac{(b^2-3)^2}{36}=\dfrac{((-3)^2-3)^2}{36}=\dfrac{6^2}{36}\\\\\boxed{a=1}[/tex]
__
value of bSolve for 'b', then substitute the value of 'a'.
[tex]\sqrt{9a}=\dfrac{b^2-3}{2}\\\\2\cdot3\sqrt{a}=b^2-3\\\\6\sqrt{a}+3=b^2\\\\b=\sqrt{6\sqrt{a}+3}=\sqrt{6\sqrt{4}+3}=\sqrt{12+3}\\\\\boxed{b=\sqrt{15}}[/tex]
How to solve for b? Do you need another variable?
Answer:
No there are 180 degrees on a line
Step-by-step explanation:
180
115-
065
65°
Please help fast-
In △LMN , point E is between points L and M, point F is between points M and N, and EF¯¯¯¯¯∥LN¯¯¯¯¯ .
LE=19 cm , LM=31 cm , and MN=124 cm .
What is MF ?
Enter your answer in the box.
Using the triangle proportionality theorem, the length of segment MF in triangle LMN is: 48 cm.
What is the Triangle Proportionality Theorem?The triangle proportionality theorem states that when a segment intercepts two sides of a triangle and it is parallel to a third side, then it divides the side proportionally.
The diagram of triangle LMN is shown below. Using the triangle proportionality theorem, we have:
MF/MN = ME/ML
Plug in the values
MF/124 = (31 - 19)/31
MF/124 = 12/31
MF = (12 × 124)/31
MF = 48 cm
Learn more about the triangle proportionality theorem on:
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