Answer:
The speed of sound is 2.23 times of the speed of race car
Step-by-step explanation:
Given that,
The speed of a race car = [tex]3.4\times 10^2\ mi/h[/tex]
The speed of sound = [tex]7.6\times 10^2\ mi/h[/tex]
Dividing the speed of sound to the speed of a race car. So,[tex]\dfrac{\text{speed of sound}}{\text{speed of race car}}=\dfrac{7.6\times 10^2}{3.4\times 10^2}\\\\\dfrac{\text{speed of sound}}{\text{speed of race car}}=2.23[/tex]
So, the speed of sound is 2.23 times of the speed of race car.
What is the estimation of 21x94
Answer:
its a estamite just guess
Step-by-step explanation:
Which number is not an integer? Select all that apply.
1.33
a.
b. -7
c.
d. 4
e. O
f. -1.63
Answer:
A and 1.33 and -1.63
Step-by-step explanation:
A integer is a whole number, it's either positive or negative.
What is 65% of 20?
ye
Answer:
13
Step-by-step explanation:
x/20 = 65%/100
20 x 65 = 1300
1300 divided by 100 = 13
Answer:13
First you have to turn the percent into a decimal, and then multiply it by the original number.
help please i dont no
system of equations
Answer:1:(2,7)
2:i or (1,-3)
3:is c or (-15,-25)
Step-by-step explanation:like if this helped mark me brainlest please
Answer:
(2,7)
(1,-3)
(-15,-25)
Step-by-step explanation:
Because both equations are equal to the same thing (y) we can just set them equal to each other and solve for x
4x-1=2x+3
solve for x
4x=2x+4
2x=4
x=2
We know that x=2 and can plug this value in for x into any of the beginning equations
4(2)-1=y
7=y
The answer is (2,7)
2.) We can do the exact same process as question one
x-4= -3x
-4= -4x
x=1
plug this x value in into any of the starting equations
1-4=y
-3=y
The answer is (1,-3)
3.) Same deal as the other two
x-10=2x+5
-x=15
x= -15
Plug this value in for x into any beginning equation
2(-15)+5
-30+5
y= -25
(-15,-25)
A card is in the shape of a rectangle. The length of the card is 7 cm
and the area of the card is 35 sq cm. What is the width of the card in
centimeters?
lol ok so
7*something or you can make it into a variable x=35
7*x=35
/7 /7
x=5.
Write an expression for the description: the product of 3 and p subtracted from 6
Answer:
6 - 3p
Step-by-step explanation:
The word "product" indicates to multiply 3 and p, and "subtracted from" tells us to use subtraction.
Answer:
the sum of 6 6 66 and the product of 3 3 33 and d d dd".
Step-by-step explanation:
Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. Ralph charges $34 for every 4 hours of work that he does. Who charges less?
They charge the same amount.
Ralph
Jalen
Answer:
They charge the same
Step-by-step explanation:
i hope this helps
С
00
92
2
A
3
3-2-1
+
4
{
5
If triangle ABC is reflected over the y-axis, reflected over the x-axis, and rotated 180 degrees, where will point A' lie?
O(-1,2)
O(-2,1)
O(1, -2)
O (2, -1)
Answer:
D it will be ...........
IF U ANSWER THESE QUESTIONS I WILL GIVE BRAINLIEST! 3 MINUTES!!!
Answer:
the answer is B. for problem 6
the answer for problem 8 is C.
Step-by-step explanation:
What’s the correct answer 9x+3-5x >2
Answer:
x>-1/4
Step-by-step explanation:
9x+3-5x>2
9x-5x+3>2
4x+3>2
4x>-1
x>-1/4
Therefore, x>-1/4
Rosemarie made a necklace from materials that cost $30. She is going to sell the necklace to Betty at 390% of this cost. About how much should Betty pay for the necklace?
А
$12,000
B
S1,200
C$120
DS12
Answer: 12
Step-by-step explanation:
What equation is being graphed?
A. y+5= -3/2(x-4)
B. y-5= -2/3(x+4)
C. y-5= -3/2(x+4)
D. y-4= -3/2(x+5)
Answer:
D. y-4= -3/2(x+5)
Step-by-step explanation:
Firstly, taking two valid ordered pairs from the graph:
(-2,4) and (2,-2)
Using Delta y over Delta x, we are able to obtain m as -3/2
Next,
The following is the point-slope formula:
y-y₁=m(x-x₁)
Based on the graph, (4,-5) can be spotted as a definite ordered pair
Therefore, y-4= -3/2(x+5) fits the graph best and has the appropriate m value.
Please help!!! I will mark someone brainliest!
Answer:
a = 8, b = [tex]\frac{3}{2}[/tex]
Step-by-step explanation:
Given the exponential function
f(x) = a[tex]b^{x}[/tex]
To find a and b use the given coordinate points on the graph
Using (0, 8 ), then
8 = a[tex]b^{0}[/tex] [ [tex]b^{0}[/tex] = 1 ] , then
a = 8
f(x) = 8[tex]b^{x}[/tex]
Using (2, 18 ) , then
18 = 8b² ( divide both sides by 8 )
[tex]\frac{18}{8}[/tex] = b² , that is
b² = [tex]\frac{9}{4}[/tex] ( take the square root of both sides )
b = [tex]\sqrt{\frac{9}{4} }[/tex] = [tex]\frac{3}{2}[/tex]
Thus
f(x) = 8[tex](\frac{3}{2}) ^{x}[/tex]
Evaluate 1/3r + 11/18 When r = 1/6
Answer:
1/3(1/6) + 11/18 = 1/18 + 11/18 = 12/18 or 2/3
Step-by-step explanation:
A shoe store uses a 50% markup for all of the shoes it sells. What would be the selling price of a pair of shoes that has a wholesale cost of $59?
Answer:
$88.5Step-by-step explanation:
[tex]59+50\%\times59=59+0.5\times59=59+29.5=88.5[/tex]
HELP I don’t understand
Answer:
D. y <= -x+2
Step-by-step explanation:
I used desmos and put all four then determined which one matched
Please help this is dew in 20 minutes
Answer:
It would be A.
You can trust me because a right angle is 90 degrees, so you would add the two angles.
Answer:
A
Step-by-step explanation:
List all the factors of 42.
Answer:
1, 2, 3, 6, 7, 14, 21, 42
Step-by-step explanation:
I don't think that I need to explain this OvO
Find the percent of decrease from 22 songs to 12 songs. Round to the nearest tenth of a percent if necessary.
Answer:
I am pretty sure the answer is 45%
Ahmed invests $1,500 at an interest rate if 4%, compound quarterly. How much is the investment worth at the end of 6 years?
Answer:
1904.60
Step-by-step explanation:
pv=1500
interest=4/4
interest=1
n=6*4
n=24
Fv?
fv=pv(1+r/n)^nt
the sum of the measures of two exterior angles of a triangle is 272. what is the measure of the third exterior angles
Answer.
Step-by-step explanation:
Given = sum of two exterior angle of a triangle is 272 .
rule of triangle is that each and every angle which are outside a triangle is 360.
so, 272 + x = 360
x = 360 - 272
x = 88
Noah is planning his birthday party. He is deciding between three themes: space, safari, and comics. He also has to determine where he wants his party, at a skating rink or a park. Lastly, he needs to pick the day of the week that the party will happen. His options are Friday, Saturday, or Sunday. How many different possible party outcomes does Noah have with all of these options? solve 1 2 3 4 5 by this math problem
Answer:
the answer is 18.l hope is good
Answer:18
Step-by-step explanation:3 (themes) X 2 (places) X 3 (days) = 18 or because 3 themes times 2 places times 3 days of the week = 18 options
what is 85% of 250$
Step by step plsss
Answer:
213
Step-by-step explanation:
Answer:
212.5
Step-by-step explanation:
250*.85 = 212.5
one half of a number is eight
Answer:
16
Step-by-step explanation:
Find the square root of 64a^2/9b^2+4+32a/3b
Answer:
[tex]\frac{4.(ab+3^2}{9}[/tex]
Step-by-step explanation:
What is the value of y?
Y-10
y+130
y+45°
Answer:
Step-by-step explanation:
its 165
12 (3 + 4) =
36 + 48
0.84
123 + 124
15 + 16
help please!! solve for x
Ariel swims 2 1/6 miles in every 1/3 hour.Enter the number of miles Ariel swims in 1 hour.
Answer:
6.5 miles
Step-by-step explanation:
If she travels 2 1/6 in 1/3 hours you would simply multiply by 3 because she would need to travel 2 1/6 miles three times in order for an hour to pass.