Answer:
Hey!
The car travelled 135 kilometers!
Step-by-step explanation:
Here you have to do the speed (45km/h) multiplied by the time (3 hours)
45 x 3 = 135
So the car has travelled 135 kilometers!
HOPE THIS HELPS!!
The square of 9 less than a number is 3 less than the number. What is the number?
-12 or 7
-12 or -7
- 7 or 12
7 or 12
Answer:
Let the number be x, then (x - 9)^2 = x - 3
x^2 - 18x + 81 = x - 3
x^2 - 19x + 84 = 0
(x - 12)(x - 7) = 0
x = 12 or 7
Step-by-step explanation:
help rsm 2.1/x+1 4/5=3/10x
Answer:
two minus one times .........
The solution to the equation is x = 7, -1.
What is a quadratic equation?The equation of the form ax² + bx +c is known as a quadratic equation.
The given equation is 2.1/x + 1 (4/5) =(3/10)x.
Simplify the equation as follows:
2.1/x + 1 (4/5) =(3/10)x
2.1/x + 9/5 = (3/10)x
2.1 + (9/5)x = (3/10)x²
21 + 18x = 3x²
3x² - 18x -21 =0
3x² - 21x + 3x -21 =0
3x(x - 7) + 3(x - 7) =0
(x - 7)(3x + 3) =0
x - 7 =0 or 3x + 3 =0
x = 7 or x = -1
Hence, the solution to the equation is x = 7, -1.
Learn more about the quadratic equations:
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Help asap
Find the surface area of a cylinder with 50 inches long and a raduis of 2 inches
Answer:
653.45
Step-by-step explanation:
Answer:
A≈653.45in
A=2πrh+2πr2=2·π·2·50+2·π·22≈653.45127in²
The figure below is a net for a rectangular prism. Side a = 22 inches, side b = 18 inches, and side c = 11 inches. What is the surface area of this figure?
A. 1,430 square inches
B. 1,672 square inches
C. 4,356 square inches
D. 836 square inches
Lily wants to buy a new smartphone. She has $500 to spend. List three ways she can get a good deal.
Answer:
get a coupon find a cheap on or steal it or get a discountAnswer:
She could use coupon deals, she could research what stores have it cheapest, see what deals online has
The price of a car is £15400 before it is reduced by 8%.
How much does it cost after the reduction?
Answer:
14168
Step-by-step explanation:
15400 / 100 x 8 = 1232
1232 = 8%
15400 - 1232 = 14168
The length of a rectangle is twice its width. If the width is 10, what is the area? Can you help me? Please?
Answer:
Area is 200
Step-by-step explanation:
First off since it said that the width is 10, We add another 10 to the length, making it 20.
Next, you multiply 20 and 10 together,
Giving you 200.
I hope I was helpful!
Answer:
200
Step-by-step explanation:
the formula for area is length * width you would 10 * 200
Help asap please ! Please explain too
Answer:
D) 35
Step-by-step explanation:
angles that are opposite are equal, so the 45 degree angles is in th triangle too. angles on a straight lines are equal to 180, so 180 - 80 = 100.
So far we have two of the angles, 100+45=145
Angles in a triangle are equal to 180, so 180-145 =35
vertically opposite angles are the same, so the ? is 35 degrees
Hope that helps
What is the surface of a box 8“ x 7“ x 2“
Answer:
172 inches squared
Step-by-step explanation:
(8 x 7)2= 112
(7 x 2)2= 28
(8 x 2)2= 32
32 + 28+ 112
172 inches squared
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an of 122 , what percent of the population has a lower IQ?
A. 47%
B. 93%
C. 22%
D. 99%
E. 7%
Answer:
B. 93%
Step-by-step explanation:
Find the z-score:
z = (x − μ) / σ
z = (122 − 100) / 15
z = 1.47
Find the probability using a calculator or z-score table.
P(Z < 1.47) = 0.93
You are wakeboarding on a river. You travel 2 miles downstream to a marina for supplies, and then you travel 3 miles upstream to a dock. The boat travels x miles per hour during the entire trip, and the river current is 3 miles per hour.
How long will the trip take when then speed of the boat is 18 miles per hour? Round to the nearest tenth minute.
Answer:
17.3
Step-by-step explanation:
(2+18)=(20mph*2miles)=6 minute
(18-2)=16mph*3miles=11.25
17.25
Which phrase describes the pattern? 1, 3, 11, 123,...
A) add 2
B) add 8
C) multiply by 3
D) square the number and add 2
E) square the number and subtract 2
The figure is made of rectangular prisms. What is the volume?
Answer:
So the first step is to do times the l that is 18 then times the width that is 6 after that times the height that is 12. The other number is from the other side so you have to times the other number too. So the answer will be c.
Step-by-step explanation:
As we the the formula for a rectangular prism is l*w*h
Answer:
2,160cm³
Step-by-step explanation:
Good luck kiddos :)
billy wishes to find the equation of a circle. this time however he only knows the end of the diameter are located at (12, 17 ) and (8, -1). below is the equation he came up with. Which part of the equation is incorrect?
Answer:
Y-8
Step-by-step explanation:
Substitute x and y in the equation
3. Fine the value of x.
A) 3.5
B)7
C) 5
D)10
Answer:
I would say B
Step-by-step explanation:
I think
select the one answer. (x+5)-4y
Answer:
B) The sum of x and 5 subtracted by 4 times y.
Step-by-step explanation:
(x + 5) = the sum of x and 5
- = subtracted by
4y = 4 times y
"The sum of x and 5 subtracted by 4 times y).
B) is your answer.
~
Answer:
B/the second one
Step-by-step explanation:
Complete the following
Gabrielle is going to shop with the $150.00 that she earned from doing chores. She wants to save 20% of her money to put into a savings account. She buys a shirt for $42.00 and a pair of pants for
$70.00, with 8% sales tax on both items. Does Gabrielle still have the amount of money she planned to put into her savings account?
no she will not have have the amount she planned on putting into her savings because she has 29.03 left over
Which point is the centroid of the triangle?
Question 5 options:
A)
D
B)
G
C)
F
D)
C
Answer:
The answer is B) G
Step-by-step explanation:
G is at the center of the triangle. It is a centroid because it is where all the medians meet.
Determine the center and radius of the following circle equation:
x² + y² - 10x + 20y + 89 = 0
Answer:
The center is ( -5, -10) and the radius = 6.
Step-by-step explanation:
Convert the equation to standard form by completing the square;
x^2 + y^2 - 10x + 20y + 89 = 0
x^2 + y^2 - 10x + 20y = -89
x^2 - 10x + y^2 + 20y = -89 Completing the square:
(x + 5)^2 - 25 + (y + 10)^2 - 100 = -89
(x + 5)^2 + (y + 10)^2 = -89 + 125
(x + 5)^2 + (y + 10)^2 = 36
Comparing this to the standard form:
( x - h)^2 + (y - k)^2 = r^2
- we see that the center is ( -5, -10) and the radius = 6.
What do you add to 2 2/9 to make 4
Answer:
I believe 1 7/9 will give you 4
Conor buys 75 tokens for games at the arcade. The price to play each game is 3 tokens. If Conor has already played x games, which expression is equivalent to the number of tokens that remain?
A. 3x – 75
B. 3(25 – x)
C. 3(25 + x)
D. 75 + 3x
Answer:
B
Step-by-step explanation:
He didn't get more tokens, so it cannot be D or C, and 3x-75 is simply not true if, for example, he played 2 games.
Pleae mark as Brainliest! :)
Have a nice day.
The value of expression is equivalent to the number of tokens that remain is,
⇒ 3(25 - x)
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
Conor buys 75 tokens for games at the arcade.\
And, The price to play each game is 3 tokens.
Here, Conor has already played x games.
Hence, The value of expression is equivalent to the number of tokens that remain is,
⇒ 75 - 3x
⇒ 3 (25 - x)
Thus, The value of expression is equivalent to the number of tokens that remain is,
⇒ 3(25 - x)
Learn more about the mathematical expression visit:
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need answer as soon as possible
Answer:
I(n)=(n4)+−5n3+45n2−70n+2424⋅δ2(n)
−3n2⋅δ4(n)+−45n2+262n6⋅δ6(n)+42δ12(n)
+60n⋅δ18(n+35n⋅δ24(n)−38n⋅δ30(n)
−82n⋅δ42(n)−330n⋅δ60(n)−144n⋅δ84(n)
R(n)=n4−6n3+23n2−42n+2424
+−5n3+42n2−40n−4848⋅δ2(n)−3n4⋅δ4(n)
+53n2+310n12⋅δ6(n)+49n2⋅δ12(n)
+32n⋅δ18(n)+19n⋅δ24(n)−36n⋅δ30(n)
−50n⋅δ42(n)−190n⋅δ60(n)−78n⋅δ84(n)
−48n⋅δ90(n)−78n⋅δ120(n)−48n⋅δ210(n)
Step-by-step explanation:
There are 30 marbles in a bag. You randomly choose 20 marbles from the bag. The results are shown in the table. Predict the total number of red marbles.
Color
Blue 6
Red 12
Yellow 2
There are about how many red marbles?
Answer:
12 because if you add 6 and 12
Step-by-step explanation:
hope it helps uou !!
Answer:
It's 12
Step-by-step explanation:
hope it helps you !!
08.01 LC)
Find the solution of 3 times the square root of the quantity of x plus 5 equals negative 9 , and determine if it is an extraneous solution. (5 points)
Question 12 options:
1)
x = 4; not extraneous
2)
x = 4; extraneous
3)
x = 0; extraneous
4)
x = 0; not extraneous
Answer:
The solution is x=4.
BRAINLIEST :)
It is not an extraneous solution.
What is the measure of 1?
95°
90°
80°
85°
Answer:
85°
Step-by-step explanation:
We need to use the angle fact that angles in a quadrilateral add up to 360° and that a right angle is 90°, using this information we can for an equation to find the value of 1. Lets call "1" x so we don't confuse it with an angle. So,
x + 85 + 100 + 90 = 360
In an equation our aim is to find the value of what we are looking for as well as keeping the equation balanced. For example if we took away 90 only from one side then the equation would change so it's an important rule to keep in mind when solving equations, that you need to keep both sides of the equation the same.
x + 85 + 100 + 90 = 360
→ Simplify equation
x + 275 = 360
→ Minus 275 from both sides to isolate x
x = 85
The measure of angle '1' is 85°
Answer:
85°
Step-by-step explanation:
∠1+85°+100°+90°= 360°
∠1 = 360°- 275°= 85°
∠1 =85°
what is the answer to z+10=5 ?
Answer:
z = -5
Step-by-step explanation:
z + 10 = 5
z = 5 - 10
z = -5
Answer: hope this helps ♡
z = -5
Step-by-step explanation:
z + 10 = 5
z + 10 - 10 = 5 - 10
z = -5
(double-check: -5 + 10 = 5 ✓)
Another khan academy question
First off, notice that this is a right triangle.
You can use this to help write equation.
Equation : x+ (4x-85)=90. The correct answer is "c"
what is the answer to 6a-15< 2(3a+4)?
Answer:
3a<38
Step-by-step explanation:
