Answer:
2
Step-by-step explanation:
Mark studied a group of 30 whales. If each whale weird approximately 3.8x10.5 pounds, find the total weight of all 30 whales. Express in Scientific notation.
Answer:
1.197 * 10^3 lbs
Step-by-step explanation:
3.8 * 10.5 = 39.9 lbs each
Now, we multiply 39.9 by 30, which is 1197 lbs in total
In scientific notation, 1197 is 1.197 * 10^3
I hope this helped, please mark Brainliest, thank you !!
Answer:
114 × 10 ^ 5
Step-by-step explanation:
30: Number of whales
380,000: weight of each whale
30 × 38,000 = 11,400,000 total weight
Scentific notation: Expressing large numbers in a smaller way so
114 × 10 exp 5
Find the Slope -6,7 -10,10
Answer: -4,3
Step-by-step explanation: When you find slope of two points you do the change of y over x. Which basically means you subtract x and subtract y. Both values. -10-(-6) 10-7. -4,3.
Here is my other question?
Answer:
Triangle A has one right angle
Step-by-step explanation:
a triangle can only have one right angle in it
this angle can be symbolized by the little square thing you see in the corner of the first picture
What is the Equivalent ratios for 16:14
Answer:
14:16
Step-by-step explanation:
Answer:
8:7 or 8/7
Step-by-step explanation:
Ratios work the same as fraction because they can also be written as fractions therefore, the ratio 16:14 can also be written as 8:7 or 8/7
What is the probability that a point chosen at random in the triangle is also in the blue square?
O 1/6
O 1/3
O 1/2
O 1
Answer:
1/3
Step-by-step explanation:
Area of a triangle = 1/2 x base x height.
Area of the shown triangle = 1/2 x 9 x 6 = 27 square inches.
Area of blue square = 3 x 3 = 9 square inches.
The probability of being in the blue are of the triangle = 9/27 which reduces to 1/3
Which set of absolute values is compared correctly? A. |-10| |-10| > |-12| > |17| C. |10| > |-15| > |-5| > |2| D. |-10| < |12| < |-15| < |17|
Answer:
D. |-10| < |12| < |-15| < |17|
10 is less than 12, which is less than 15, which is less than 17.
Step-by-step explanation:
A. |-10| |-10| > |-12| > |17|
12 is not greater than 17.
C. |10| > |-15| > |-5| > |2|
5 is not greater than 2.
WEATHER The highest and lowest recorded temperatures for the state of Texas are 120°F and -23°F. Find the difference in these extreme temperatures?
Answer:
the answer is 143°
Step-by-step explanation:
120 - (-23) = 143
The difference between the highest and the lowest temperature will be 143 Fahrenheit.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that the highest and lowest recorded temperatures for the state of Texas are 120°F and -23°F.
The difference will be calculated by forming the equation below:-
Difference = 120 - ( -23 )
Difference = 120 + 23
Difference = 143
Therefore, the difference between the highest and the lowest temperature will be 143 Fahrenheit.
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Which city is the largest percent of people taking the train
Answer:
new york
Step-by-step explanation:
it has the highest number
Find the product of all real values of r for which 1/2x=r-x/7
Answer:
[tex]r = \±\sqrt{14[/tex]
[tex]Product = -14[/tex]
Step-by-step explanation:
Given
[tex]\frac{1}{2x} = \frac{r - x}{7}[/tex]
Required
Find all product of real values that satisfy the equation
[tex]\frac{1}{2x} = \frac{r - x}{7}[/tex]
Cross multiply:
[tex]2x(r - x) = 7 * 1[/tex]
[tex]2xr - 2x^2 = 7[/tex]
Subtract 7 from both sides
[tex]2xr - 2x^2 -7= 7 -7[/tex]
[tex]2xr - 2x^2 -7= 0[/tex]
Reorder
[tex]- 2x^2+ 2xr -7= 0[/tex]
Multiply through by -1
[tex]2x^2 - 2xr +7= 0[/tex]
The above represents a quadratic equation and as such could take either of the following conditions.
(1) No real roots:
This possibility does not apply in this case as such, would not be considered.
(2) One real root
This is true if
[tex]b^2 - 4ac = 0[/tex]
For a quadratic equation
[tex]ax^2 + bx + c = 0[/tex]
By comparison with [tex]2x^2 - 2xr +7= 0[/tex]
[tex]a = 2[/tex]
[tex]b = -2r[/tex]
[tex]c =7[/tex]
Substitute these values in [tex]b^2 - 4ac = 0[/tex]
[tex](-2r)^2 - 4 * 2 * 7 = 0[/tex]
[tex]4r^2 - 56 = 0[/tex]
Add 56 to both sides
[tex]4r^2 - 56 + 56= 0 + 56[/tex]
[tex]4r^2 = 56[/tex]
Divide through by 4
[tex]r^2 = 14[/tex]
Take square roots
[tex]\sqrt{r^2} = \±\sqrt{14[/tex]
[tex]r = \±\sqrt{14[/tex]
Hence, the possible values of r are:
[tex]\sqrt{14[/tex] or [tex]-\sqrt{14[/tex]
and the product is:
[tex]Product = \sqrt{14} * -\sqrt{14}[/tex]
[tex]Product = -14[/tex]
One company estimates same-day delivery as more than three less than half the total number of miles. Which
graph represents the overall equation represented by this scenario (all points may not apply to the scenario)?
Option D is correct, the region above of the line y=x/2-3 that we can write as y>x/2-3
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
We know by reading the exercise that the company estimates same day delivery as a region of the miles.
y>x/2-3
We need to represent this region in a graph.
One way is to find the graph of y=x/2-3
This line will divide the plane into two regions. Then, using any point that verifies the original equation we can find the graph.
y=x/2-3
If x=0
y=-3
The point (0, -3) is the interception of the line with y-axis.
Now if y=0
0=x/2-3
3=x/2
6=x
The point (6, 0) is the interception of the line with x-axis.
We know that y>x/2-3 will be the region above of or below of the line y=x/2-3
Now using an arbitrary point (0,0), for example and replacing in the expression :
0>-3
The point (0, 0) verifies the expression. Therefore, this point belongs to the region.
Finally, we conclude that the region is the region above of the line y=x/2-3 that we can write as y>x/2-3 and the correct option is D.
Hence , option D is correct, the region above of the line y=x/2-3 that we can write as y>x/2-3
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Write the equation of the line that is parallel to y=4x-3 and passes through the point (5,12)
Answer?
____________
Answer
y=4x-8
Step-by-step explanation:
m = 4
y- 12 = 4(x-5)
simplify and keep it in point-slop form
y=4x-8
What is 1 + 1? Figure out the question 1st for brainliest.
\THE ANSWER IS 2 I WAS FIRST
helppp please I need it will give brainliest
you have to write an equation
Answer:
c=100g+50
Step-by-step explanation:
c is the total cost
there is a 50 dollar fee and 100 dollars per guest
so for every guest, the cost is increased by 100
since there are g number of gusts, the price for the guests will be 100g dollars
since there is also a 50 dollar fee, 50 dollars has to be added to the 100g
therefore c=100g+50
Help plzzzzzzzz will give brainliest
Answer:
78.4
Step-by-step explanation:
You add them all up and divide by however many numbers there are.
Answer:
78.4
Step-by-step explanation:
To find the mean of something, you need to add all the values together, then divide the sum by the number of numbers there are.
The sum of all the numbers is 784, and there are 10 numbers.
So, the equation you need to solve is:
784 / 10 = ?
This equals 78.4, so the mean is 78.4.
PLS HELP ASAP
(2,9)(3,4)(-2,5) is this a function
Answer:
Not a function
Step-by-step explanation:
when plotted the points do not form a line
Answer:
no its not a function
Explanation:
A function is a relation (a set of ordered pairs) with the additional property that: no two pairs have the same first element and different second elements.
The definition is often stated as: A relation in which every x value is associated with exactly one y value. "Exactly one means one but two or more:
{(1,2);(2,3);(3,4);(2,5)} includes the points (2,3) and (2,5). Therefore these set of pairs are not a function.
Match the number with its opposite. (4 points)
a delivery person uses a service elevator to bring boxes of books up to an office. the delivery person weighs 160 lb and each box of books weighs 50 lb. the maximum capacity of the elevator is 1400 lb. how many boxes can the delivery person bring up at one time?
(I will give brainliest and extra points if you help me!! <3)
Solve three and one half times one and two thirds.
A) three and two sixths
B) four and two sixths
C) five and five sixths
D) six and five sixths
Answer:
im guessing c. I got 5.833333333
Step-by-step explanation:
Answer:
Mixed number: 5 5/6. Decimal 5.8333333.
Step-by-step explanation:
3 1/2 x 1 2/3
(3 x 2) + 1 = 7/2
(1 x 3) + 2 = 5/3
7/2 x 5/3 = 35/6
35 ÷ 6 = 5 5/6.
So its C.
Jason’s family drove 120 miles using 5 gallons of gas. At this rate, how many miles can they drive on 8 gallons of gas? Use the number-line diagram shown.
image d54bd69863f440d4825eb959d7d85b0d
A.
192 miles
B.
960 miles
C.
24 miles
D.
600 miles
Answer: 192 miles
Step-by-step explanation:
120/5=24
24*8=192
Marin Caswell needs 10% hydrochloric acid for a chemistry experiment. How much 5% acid should she mix with 60 milliliters of 20% acid to get a 10% solution?
Answer:
120 mL of 10% HCL will be used.
Step-by-step explanation:
to solve this, we have to generate an equation for the mixture, to get the volume of 10% HCl needed.
Let the volume needed = x
5% of x + (20% of 60ml) = 10% of ( 60 + x) ml of new mixture
0.05x + (0.2 × 60) = 0.1 × (60 + x)
0.05x + 12 = 6 + 0.1x
12 - 6 = 0.1x - 0.05x
6 = 0.05x
x = 6 ÷ 0.05
x = 120
Therefore, 120 mL of 10% HCL will be used.
write an equivalent system of equations to the following of equations: 2x+2y=-6 and x-4y=2
Answer:
A system of equivalent equations is:
x + y = -3
2x - 8y = 2
Step-by-step explanation:
Given
2x + 2y = -6
x - 4y = 2
Required
Write a system of equivalent equations
A system of equivalent equations implies that:
When the new set of equation is solved, the solution is equivalent to the original equation.
To do this, we have to carry out the same operation on both sides of the given equation.
Take for instance
2x + 2y = -6
Multiply both sides by ½
½(2x + 2y) = -6 * ½
x + y = -3
x + y = -3 is equivalent to 2x + 2y = -6
Multiply both sides of x - 4y = 2 by 2
2(x - 4y) = 2 * 2
2x - 8y = 4
2x - 8y = 4 is equivalent to x - 4y = 2
Hence, a system of equivalent equations is:
x + y = -3
2x - 8y = 2
Note that there are more equivalent equations.
The results you get depend on the operation performed on the given equation.
Please answer as fast as possible see the image
Answer:
111.9 units
Step-by-step explanation:
Area of semicircle: 1/2(πr^2)
r = 3
1/2(π(3)^2)
33.92920065
Area of Rectangle: w * l
l = 13
w = 3(2)
13 * 3(2) = 13 * 6 = 78
Total:
78 + 33.9 = 111.9 units
Answer:
92.1Step-by-step explanation:
total area = rectangle + semicircle
= (13 x 6) + (1/2 π 3²)
= 78 + 14.1
= 92.1
A box of cereal states that there are 90 calories in a 3/4 cup serving. How many calories are there in 4 cups of that cereal?
Answer:
Lets call the calories in one cup 'x'
so (3/4)x=90
Solving for x:
x=(90)/(3/4)
x=120
Now for 4 cups:
(4)(120)=?
480 calories in 4 cups of cereal
Answer: 480.
Step-by-step explanation:
3/4=90 so 1/4=30 so 30x4 is 120. 120=4/4=1 cup. 4 cups is 120x4=480, have a good day :D
Write a real-world division story for 8/2. Then write another real-world story that shows a different way to think about division
Answer:
Kinda cheesy:)
Step-by-step explanation:
If you what to give 2 friends candy and all you have is 8 pieces of candy, each friend will get 4 pieces of candy.
A right triangle, DEF, is shown below.
What is sin FDE?
Answer:
22.6°
Step-by-step explanation:
Reference angle = <FDE
Side opposite to <FDE = 5
Hypotenuse = 13
The trigonometric ratios to apply is:
[tex] sin(\theta) = \frac{opp}{hyp} [/tex]
Plug in the values
[tex] sin(\angle FDE) = \frac{5}{13} [/tex]
[tex] sin(\angle FDE) = 0.3846 [/tex]
[tex] \angle FDE = sin^{-1}(0.3846) [/tex]
[tex] \angle FDE = 22.6 [/tex] (nearest tenth)
NEED HELP !! give the following information about the linear function on the graph shown.
Answer:
x-intercept = 6
y-intercept = -4
Slope: m = ⅔
f(3) = -2
Step-by-step explanation:
✔️The x-intercept is the value of x when y = 0. It is the point at which the line of the function intercepts the x-axis. Thus,
x-intercept = 6
✔️The y-intercept is -4. At this point, x = 0. The line intercepts the y-axis at y = -4. Thus,
y-intercept = -4
✔️Slope can be calculated using two points, (0, -4) and (6, 0).
[tex] slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 -(-4)}{6 - 0} = \frac{4}{6} = \frac{2}{3} [/tex]
Slope: m = ⅔
✔️f(3) means, what is the value of y when x = 3.
From the graph, when x = 3, y = -2.
Therefore,
f(3) = -2
what is 2+2 in math and the answer is 4
Answer:
4
Step-by-step explanation:
Amy and rose both compete in a race. Amy takes 42.8 seconds to finish, and Rose finishes in 49.2 seconds. How many seconds faster was Amy than Rose?
Answer:
6.4 seconds
Step-by-step explanation:
you subtract roses time by Amys time to find the difference.
What is the fraction equivalent to 3/9?
Answer:
1/3 or 2/6
Step-by-step explanation:
hope this helps :)
Can someone pls tell me this ASAP I need it in 15 minutes will give brainliest(the 4 question)
Answer: 90
Step-by-step explanation: