Answer:
S = 30 mph
Step-by-step explanation:
A car’s speed before a sudden stop can be estimated by the formula :
[tex]S=\sqrt{30gk}[/tex]
Here,
S = speed of the car in mph,
g = drag factor, and
k = length of skid mark in feet
If drag factor is 1, k = 30 feet
So,
[tex]S=\sqrt{30\times 1\times 30}\\\\S=30\ mph[/tex]
Therefore, the correct option is (a) 30 mph.
An airliner leaves an airport going due east, flying at 350 miles per hour. Another airplane leaves the same airport at the same time going due west, flying at 400 miles per hour. How long will they be 2,250 miles apart? ( with explanation )
Sara is having a dinner party for four friends and needs to reduce the serving size of the meatloaf recipe. She uses the equation StartFraction x over 4 EndFraction = 5. How many servings did the recipe originally make?
4
5
9
20
Answer: 20 servings
Step-by-step explanation:
From the question, Sara is having a dinner party for four friends and she needs to reduce the serving size of the meatloaf recipe. Sara used the equation x/4=5 . To get the number of servings the recipe originally made, we have to find the value of x.
x/4 = 5
x = 4 × 5
x = 20
This means that the recipe that was used originally made 20 servings.
Answer: D. 20 servings
Step-by-step explanation: I got it right on edge
Please help ASAP, hehdjehbdhdi
Answer:
[tex]x = 7[/tex]
Step-by-step explanation:
[tex]2x + 5 = 3x - 2 \\ 2x - 3x = - 5 - 2 \\ - x = - 7 \\ x = 7 \: \: degrees[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
____________________________________
Hey!!
Solution2x+5=3x-2(being vertically opposite angles)
or,2x-3x=-2-5
or,-x=-7
X=7
So the value of X is 7.
Hope it helps
Good luck on your assignment
Stay safe...
___________________________________
Solve for the following equation step by step and justify your steps when using an exponential property. PLEASE HELPP
Answer:
[tex]x=5/7[/tex]
Step-by-step explanation:
[tex]7^{4x} =\frac{7^{5} }{7^{3x} }[/tex]
[tex]7^{4x} *7^{3x}=7^{5}[/tex]
[tex]7^{7x} =7^{5}[/tex]
[tex]7x=5[/tex]
[tex]x=5/7[/tex]
Answer:
x=5/7
Step-by-step explanation:
(7ˣ)⁴= 7²*7³/7³ˣ7⁴ˣ= 7⁵⁻³ˣ4x=5-3x4x+3x=57x=5x=5/7Please read the Real Work questions attached. Thanks.
Answer:
26
Step-by-step explanation:
Since B ∈ AC and BC = 10, AB = AC - BC = 36 - 10 = 26.
I need help with a few more questions!
Simply multiply the price of the product by the quantity of the product you want.
$1.66 * 9.
$14.94
wiil mark bianleast
The point (–3, –5) is shown. Which is the location of (3, –5)?
Q
T
S
R
Answer:
T
Step-by-step explanation:
Because the point (3,-5) is simply the point with coordinates (-3,-5) reflected on the y-axis.
Answer:
T
Step-by-step explanation:
(3, - 5) is represented by point T.
Steven spent 2 hours and 30 minutes to attend 3 classes. If it took him the same amount of time to attend each class, how long would it take him to attend 5 classes?
Answer:
about 4.17 hours
Step-by-step explanation:
To solve the time for each class, you do 2.5 hours divided by 3. Then you take this value and multiply by 5 since there are 5 classes. After you do this, you should get 4.17 hours roughly.
Which statements are true? Check all that apply.
If a figure has point symmetry, it also must have rotational symmetry.
If a figure has rotational symmetry, it also must have point symmetry.
If a figure has point symmetry, it also must have 4-fold reflectional symmetry.
All parallelograms have point symmetry.
A triangle never has point symmetry.
The answers are
A) If a figure has point symmetry, it also must have rotational symmetry
D) All parallelograms have point symmetry
E) A triangle never has point symmetry
on Edge 2020
A parallelogram has rotational symmetry and triangle has no points of symmetry. Therefore, option 4 and 5 are correct answers.
What is a point symmetry?Point Symmetry is when every part has a matching part the same distance from the central point but in the opposite direction. It looks the same when viewed from opposite directions (180° rotation).
1) A figure has point symmetry, if it has a rotational symmetry of 180 degrees.
2) An object is said to possess rotational symmetry if it takes the same shape before and after its rotation along its point of rotation.
3) In order for a figure to have reflectional symmetry, there needs to be at least one axis such that when the the figure "folds" over that axis it maps into itself.
4) A parallelogram has rotational symmetry. A parallelogram does not have reflectional symmetry.
So, all parallelograms have point symmetry.
5) Triangle has no points of symmetry, because there is no up and down shapes in triangle
A parallelogram has rotational symmetry and triangle has no points of symmetry. Therefore, option 4 and 5 are correct answers.
Learn more about the point symmetry here:
https://brainly.com/question/1593820.
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work or
Use the distributive property or the area model to write an expression that is equivalent
to 8(3x + 4).
a. 24x + 4
b. 3x + 32
c. 24x + 32
d. 11x + 12
Hi
k (a+b) = ka+kb
so : 8 (3x+4) = 8*3x +8*4 = 24x +32
Answer:
24x +32
Step-by-step explanation:
8 times 3 is 24 and 8 times 4 is 32.
The expression 2(a+b)=−8.1 for certain values of a and b. Find the value of the following expressions for the same values of a and b: −0.5(a+b)
Answer:
Interpreting as: 2(a+b)=-8.1
Input:
2 (a + b) = -8.1
In Given the expression
2( a + b) = 8.1 ..........................(1)
now divide both sides of the first equation by 2 ,
2 (a + b) /2 = 8.1 /2
(a + b) = 4.05
expression -0.5(a + b) ................(2)
simply put the value of (a + b) in (2),
- 0. 5( 4.05) = -0.5 * 4.05
= 2.025
Value of expression is 2.025.
What is a expression in maths?
An expression is a set of terms combined using the operations +, – , x .
For example - 4 x − 3 or x 2 – x y + 17 .
Learn more about https://brainly.com/question/24242989
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what is the range of the function graphed below ?
Answer:
the answer is the first one
Step-by-step explanation:
domain and range are x and y so you find all the y's
Answer:
B
Step-by-step explanation:
On edge
Solve the equation
A.-32,32
B.-8’8
C.8
D.32
Answer:
b
Step-by-step explanation:
[tex]\sqrt{64}[/tex]=±8
Answer:
B. -8 and 8
Step-by-step explanation:
To solve this equation, we need to get x by itself. To do this, perform the opposite of what is being done to the equation. Keep in mind everything must be done to both sides of the equation.
x^2=64
x is being squared. The opposite of being squared is taking the square root. Take the square root of both sides.
√x^2=√64
The exponent and square root on the left will cancel, and x will be left by itself.
x=√64
x=±8
The solutions of the equation are x=8 and x= -8
Therefore, the answer is B. -8, 8
00:00
Mrs. Swan wrote 4 equations on the board.
Which equation shows the Associative Property of Multiplication?
O A. 3x6x1=3 x 1
O B. 3 x 6 = (3 x 2) + (3 x 4)
O C. 3x6 = 6 x 3
0 D. (3 x 6) x 2 = 3 (6 x 2)
Answer:
Option D
Step-by-step explanation:
The Associative Property of Multiplication allows you to group numbers in any combination, and still get the correct answer from it.
[tex]a(b*c)=(a*b)c[/tex]
Option D '(3 x 6) x 2 = 3 (6 x 2)' has the same numbers, but 3 and 6 are grouped while 6 and 2 are grouped on the other side.
[tex]a*(b*c)=(a*b)*c\rightarrow(3 * 6)*2 = 3*(6 * 2)[/tex]
Option D should be the correct answer.
Consider the sequence 256,128,64,32 find the 12th term of the sequence
Answer:
It would be 0.125
Step-by-step explanation:
I hope this helps you.
pleas helpppp please
Answer:
48cm^2
Step-by-step explanation:
We are given some of the measurements of the piece of cardboard.
First, let's find the lengths of all the sides of the cardboard, as it will be easier to then find the area.
Going in clockwise order, from top to bottom, the dimensions are:
4cm, 7cm, 6cm, 2cm, 10cm, 9cm.
Now, we can easily find the area by using the formula BH=Area. Let's split the cardboard into sections that will be easier to find the area of. Say we split it in two, rather like a sneaker with the person wearing a sock showing at the ankle (I have strange explanations, I know).
To find the top part (the sock part) we can multiply 4 by 7 to get 28.
To find the shoe part, we can multiply 10 by 2 to get 20.
Finally, add these areas together to get the total area.
20 + 28 = 48
Another way to do this (if my sock and sneaker explanation was too chaotic for you) would be to imagine that the cardboard piece were an entire rectangle (ignore that chunk that has been cut out).
The area of that would be 90, from 9 by 10 as the side lengths. Then, from earlier, we know that the width and length of the chunk that has been cut out is 6 and 7, so the area that will be cut out is 42.
Subtract 42 from 90 to get 48.
to check the answer to an equation, you can ___ your answer into the equation.
A) distribute
B) combine like terms
C) substitute
15 ponints!!
Answer:
Substitute
Step-by-step explanation:
After you get an answer to an equation, you can substitute your answer into the equation to check to see if it's correct.
Options A and B are steps to complete an equation, not to check it.
Option C should be correct.
Example:
[tex]x+5=16\\x+5-5=16-5\leftarrow \text{Subtraction Property of Equality} \\x=11[/tex]
We can substitute 11 into the equation to check if it's correct.
[tex]11+5=16\\\boxed{16=16}[/tex]
Our answer is correct.
Answer:
B) combine like terms
Step-by-step explanation:
When you combine like terms, you have to consider all and need to plug in your answer into the original equation to check.
Will give brainliest to whoever answers correctly.
Answer:
x=8
Step-by-step explanation:
1st rectangle:
6×4=24
2nd rectangle:
24÷3=8
Answer:
x = 8 cm
Step-by-step explanation:
A = l x L
6cm×4cm = 3cm×xcm
x = 24cm²/3cm
x = 8 cm
(4x^3+3x^2-30x-10) divides by (x-3)
ANSWER ASAP
Step-by-step explanation:
The answer is on the picture
This week, Michael collected $468 for delivering newspapers. He had 40 repeat customers and 18 new ones. As an
incentive, he charged the new subscribers $3 less than the repeat customers.
If x represents the amount Michael collects from each repeat customer, which equation models this problem?
What is the fee Michael charges each new subscriber?
Answer:
6
Step-by-step explanation:
Answer:
B and C
Step-by-step explanation:
For the first one it is B.
For the second one it is C.
If 2a+1/2a=10 find : 4a2+1/4a2
Answer:
98
Step-by-step explanation:
(2a + [tex]\frac{1}{2a}[/tex] )² = 4a² + 2 + [tex]\frac{1}{4a^2}[/tex] , thus
10² = 4a² + 2 + [tex]\frac{1}{4a^2}[/tex] ( subtract 2 from both sides )
100 - 2 = 4a² + [tex]\frac{1}{4a^2}[/tex] , that is
4a² + [tex]\frac{1}{4a^2}[/tex] = 98
What is the measure of
Answer:
58°
Step-by-step explanation:
subtract 32 from 90 and you get the measure of x°
hope this helps
Answer:
58°
Step-by-step explanation:
Since it is 90° angle and one side of the angle is given as 32° , inorder to get the value of angle x we must subtract the given angle that is 32°from 90°by default. Then we will get the value of x as 58°.
plzz mark brianliest
hope it help yuh..
please help me, not good with math
Answer:
1/4
Step-by-step explanation:
total rolls = 10+6+4+8+6+6 = 40
P(3 or 6) = number of 3's or 6's / total
= (4+ 6) / 40
= 10/40
=1/4
please please please help meeeee
Answer:
75.36
Step-by-step explanation:
V=3.14*4*6
Answer: 75.4
Step-by-step explanation:
V= pi r^2 h
3.14(2^2)(6)
Approximately 75.39822
What inequalities have the solution set graphed in the number line? Select two options.
Answer:
A and C
Step-by-step explanation:
hope i am right
The solution to ? Is m= 1.
A). m + 2 = 1
B). m + 1 = 3
C). m + 1 = 2
D). m - 2 = 1
( C. ) m + 1 = 2
Step-by-step explanation:
m + 1 = 2
⇒ m = 2 - 1
⇒ m = 1
In a local city, the temperature at noon is -3ºC. The temperature is expected to decrease by 2.5°C each hour until the
temperature reaches -18°C. How many hours will it take for the temperature to reach -18°C?
O 6 hours
7 hours
7.2 hours
8.4 hours
Answer:
6 hours
Step-by-step explanation:
18-3= 15 degrees different between noon temperature and the reached one
15/2.5 = 6
Answer:
A
Step-by-step explanation:
E2021
This is a math problem on my summer homework assignment and I'm not sure how to do it.
5x-23=45^2+65x
Answer: x=-34.13
Step-by-step explanation:
This problems seems to ask you to solve for x. You want to get like terms on the same side and solve for x.
5x-23=45²+65x
5x-23=2025+65x
-60x=2048
x=-34.13
Consider the interval between A (-1, - 4) and B (5, 8).
0
10
10
Find the gradient of the interval AB.
Answer:
Step-by-step explanation:
will reward brainliest, LOOK AT THE IMAGE AND PLEASE ANSWER IN DESCENDING ORDER!
Answer:BCA
Step-by-step explanation: