Answer:
[tex]a.\ D=\dfrac{1}{5}t[/tex]
b. 20 seconds
Step-by-step explanation:
Let [tex]D[/tex] be the distance in miles and
[tex]t[/tex] be the time in seconds and
[tex]s[/tex] be the speed in miles/sec
Formula for Distance is given as:
[tex]Distance = Speed \times Time\\OR\\D=st[/tex]
Given that:
Distance = 2 miles and
Time = 10 seconds
Putting the values in formula:
[tex]2=s\times 10\\\Rightarrow s =\dfrac{1}{5} \ miles/sec[/tex]
Answer a:
Putting the value of [tex]s[/tex] back in the formula to find the direct variation equation for the relationship between time and distance:
[tex]D=\dfrac{1}{5}t[/tex]
Answer b:
Using the above formula and putting [tex]D=4\ miles[/tex]:
[tex]4=\dfrac{1}{5}t\\\Rightarrow t =\bold{20\ seconds}[/tex]
In ΔXYZ, z = 46 cm, x = 45 cm and ∠Y=81°. Find the length of y, to the nearest centimeter.
Answer:
If the question is supposed to be solved using the pythagorean thorem, y≈64.35
Answer:
59
Step-by-step explanation:
as Lucia fills her fish tank she notices that it fills 8 cubic centimeters of water in 4 minutes. How many cubic centimeters of water does it fill in 1 minute?
hey what's (5-9)² divided by 2(-4)+(-17)
Answer: It's -49
Step-by-step explanation:
:)
What is 17% written as a decimal? Will give brainiest for fastest and correct answer!!!
What is 17% written as a decimal?
a.
0.0017
b.
0.017
c.
0.17
d.
1.7
Answer:
0.17
Step-by-step explanation:
Answer:
C) 0.17
Step-by-step explanation:
There is an invisible decimal behind the 17 in 17% and you have to move that decimal to the right twice. Which makes 17% become 0.17
If y varies drectly with x
and y= 4.5 when x= 2.5,
what is y when x= 12?
There is a bag filled with 5 blue and 6 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting at least 1 red?
Answer:
There are 6+5 marbles.
Of those, 5 are red.
The chances of drawing a red marble are 5/11
Since you replace the marble you drew, the chances each draw remain 5/11
You cannot draw two red marbles without drawing a red marble on your first draw, so the odds of you making a second draw are 5/11. The odds of that also being red are 5/11… but we only care about that 5/11ths the time
5/11*5/11=25/121
NEED TO SKETCH THE GRAPH OF EACH LINE
Answer:
The first picture is number 4
The second picture is number 5
The last picture is number 3
Step-by-step explanation:
sssssssssssssssssssssssssssssssssssssssssSimplify: 2(2x + 8)
Answer:
4x+16
Step-by-step explanation:
Use the distributive property
2×2x=4x
2×8=16
Simplified: 4x+16
Hope this helps! :) Plz mark as brainliest
Select all of the angles that have the same measure as angle 1. Assume the lines are parallel.
∠7
can't be determined
∠3
∠2
∠5
∠6
∠8
∠4
Answer:
3, 8, 6
Step-by-step explanation:
Please correct me if I am wrong!
The angles that have the same measure as angle 1 are ∠3, ∠6 and ∠8.
What is an angle measure?When two lines or rays intersect at a single point, an angle is created. The vertex is the term for the shared point. An angle measure in geometry is the length of the angle created by two rays or arms meeting at a common vertex.
Given:
A traversal line cuts two parallel lines.
So, ∠1 = ∠6. {From the property of opposite angles}.
And ∠1 = ∠3. {From the property of alternate interior angles}.
The property of opposite angles,
∠8 = ∠3.
So, the angle measures that are equal to ∠1 are:
∠3, ∠6 and ∠8.
Therefore, ∠3, ∠6 and ∠8 are the equal angle measures.
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Circle each value that is a perfect square.
50
81
289
360
100
75
224
Answer:
81100289Step-by-step explanation:
Hope this helps! <3Please explain this!!!!!!!!!!!!!!!!!!!!
Answer:
SCORATIC THE APP WILL GIVE YOU ALL ANSWERS
Step-by-step explanation:
Which equation represents the line shown on the graph?
A- y=-2x
B- y=x+2
C- y= -x+2
D- y=2x
Answer:
B- y=-x+2
Step-by-step explanation:
I did this before
help me and the 1st 2 answer will get brainliest and i need asap im in the test
Answer:
C
Step-by-step explanation:
C
Answer: yea it is c
Step-by-step explanation:
Find the diameter of the semicircle whose area is 1232 cm2
Area of semicircle =
[tex] \frac{ {\pi \: r}^{2}}{2} [/tex]
Area of the given semicircle = 1232 cm^2
[tex] \frac{ {\pi \: r}^{2}}{2} = 1232 \\ = > {\pi \: r}^{2} =( 1232 \times 2) \\ = > \frac{22}{7} {r}^{2} = 2464 \\ = > {r}^{2} = ( \frac{2464 \times 7}{22} ) \\ = > {r}^{2} = 784 \\ = > r = \sqrt{784} \\ = > r = 28cm[/tex]
[tex]d = r \times 2 \\ d = (28 \times 2 )cm\\ d = 56cm[/tex]
Hence, the diameter of the circle is 56cm
If 225 widgets were produced in 2.2 hours what is the hourly production rate
Answer: The hourly production rate is about 102.3 widgets per hour
Step-by-step explanation:
1.) divide 225 by 2.2, which gives you 102.2727
2.) round to the nearest tenth
Write the point-slope form of the given line that passes through the points (-4, -1) and (3, -3). Identify (x1, y1) as (-4, -1).Include your work in your final answer. Type your answer in the box provided to submit your solution.
Answer:
y+1=-2/7(x+4)
Step-by-step explanation:
Found the slope first then plugged in the numbers
A magician charges parties a $30 fee to cover travel and miscellaneous expenses plus $19.99 per hour. What an equation for that?
Answer:
30 + 19.99 per hour
Step-by-step explanation:
ADD THEM IN A EQUATION.
SO SIMPLE TO DO THAT!
Answer:
Step-by-step explanation:30+19.99x
What are the x- and y-intercepts of the graph of. PLEASE HELP!
Answer:
Answer is B
Step-by-step explanation:
1. What is the solution to(3x - 10x + 5 = 5x + 172
Record your answer and fill in the bubbles on the grid below. Be sure to use the correct
place value
OOOOOOOOOO
OOOOOO
OOOOO
2. Rectangle ABCD has a length represented by the expression 2x = 3 and a width
represented by the expression 4x + 5 Rectangle PORS has a length represented by
the expression - 1 and a width represented by the expression 3X Which of the
following expressions can be used to represent the difference in the perimeters of
Rectangle ABCD and Rectangle PORS?
A.
2x + 1
B. 4x + 2
C. 20x + 6
D. 4x + 6
helpppppppp!!!
Answer:
16 its not true trust
Step-by-step explanation:
Answer:
bhhk
Step-by-step explanation:
drdytkbk
Here is a riddle:
I am thinking of two numbers that add up to 5.678.
The difference between them is 9.876.
What are the two numbers?
Answer:
[tex]the \: two\: numbes \: are : \\ 7.777 \: and \: - 2.099[/tex]
Step-by-step explanation:
[tex]let \: the \: two \: numbers \: be : x \: and \: y \\ x + y = 5.678.....eq(1) \\ x - y = 9.876 .....eq(2)\\ x = 9.876 + y....from \: eq(2) \\ y = 5.678 - x....frm \: eq(1) \\ eq \:...y \: in \: terms \: o f\: x : \\ x = 9.876 + 5.678 - x \\ 2x = 15.554 \\ x = 7.777 \\ y = 5.678 - x = y = 5.678 - 7.777 \\ y= - 2.099.[/tex]
The area of a square garden is 49 ft^2. How long is each side of the garden?
Answer:
7
Step-by-step explanation:
Answer:
I think the answer is 7.
Step-by-step explanation:
Use the Pythagorean theorem to find each missing length to the nearest tenth
Answer:
c (the hypotenuse) = 10.4 units
Step-by-step explanation:
Start off by rearranging the original pythangorean theorem (a^2+b^2=c^2) by taking the square root of both sides so it is in the form of a distance formula solving for c(the hypotenuse).
c^2 will become |c| as length cannot be negative so (labeling an absolute value is negligible)
a^2+b^2 = c^2
c^2 = a^2+b^2
√(c^2) = √(a^2+b^2)
c = √(a^2+b^2)
Then substitute the given lengths, in this scenario, sides a and b.
After you substitute, just simplify.
c = √(3^2+10^2) = √(9+100) = √109 ≈ 10.4 units (nearest tenth)
Convert the following equation into
slope-intercept form
4x - 6y = 42
Answer:
y=2/3x -7
Step-by-step explanation:
4x -6y=42
-4x = -4x +42
-6y= -4x + 42
-6 -6 -6 divide both sides by -6
y= 4/6x -7 simplify
y= 2/3x -7
Which is not a prime number? A. 31 B. 47 C. 49 D. 53
Answer:
49 is not a prime number
Step-by-step explanation:
7 times 7 = 49
Answer:
C) 49
Step-by-step explanation:
Prime numbers are numbers that can only be factored into 1 and it's own number.
In the case of 49, it is a composite number.
Factors of 49: 1 , 7 , 49
1 x 49 = 49
7 x 7 = 49
49 x 1 = 49
~
Decrease $820 by 32%
Answer:
557.6
Step-by-step explanation:
Percent (%)' means 'out of one hundred':
p% = p 'out of one hundred',
p% is read p 'percent',
p% = p/100 = p ÷ 100.
32% = 32/100 = 32 ÷ 100 = 0.32.
100% = 100/100 = 100 ÷ 100 = 1.
Percentage decrease = 32% × 820
New value =
820 - Percentage decrease =
820 - (32% × 820) =
820 - 32% × 820 =
(1 - 32%) × 820 =
(100% - 32%) × 820 =
68% × 820 =
68 ÷ 100 × 820 =
68 × 820 ÷ 100 =
55,760 ÷ 100 =
557.6
Answer:
32/100 × 820
council the zeros
32/10 × 82
32× 82/10
2624/10
= 262.4
Step-by-step explanation:
there's ur answer
what is 5280 divided by 60
Answer:
88
Step-by-step explanation:
i used a calculator :)
1. Represent the following system with a matrix
-2x + 4y + z = 0
-X + 3y = 0
5x + y + 9z = 8
2. What linear system of equations does this matrix represent?
6 -1 112
-1 10
3. What is the solution of this system of equations? Use your calculator.
3a + 2b - C = 7
2a - C = 5
A-4b+c=.4
4. You manage a health food store and budget $80 to buy ingredients to make 30 pounds
of trail mix. Peanuts cost $2.50 per pound, raisins cost $2.00 per pound, and granola
costs $4.00 per pound. If you use twice as many pounds of peanuts as raisins, how
many pounds of each ingredient should you buy? Show as much work as necessary.
You will not get any credit for just writing answers.
Answer:why is it show glitchy
Step-by-step explanation:
help with this !!! thanks
Answer: Casey bought 4 1/2 pounds of apples
The equation is 0.88x - $1.50 = 2.46
x is the unknown number of pounds of apples.
0.88 is the cost per pound, 0.88x is the total cost of the apples before the discount .The discount is $1.50 $2.46 is the cost after the discount.
Part b Step-by-step explanation:
0.88x - $1.50 = 2.46 . Add $1.50 to both sides
0.88x - $1.50 + $1.50 = 2.46 + 1.50
On left, 1.50-1.50=0 so "cancels' on the right, add $2.46 + 1.50 = 3.96
0.88x = 3.96 is the cost before discount . Divide both sides by .88
.88x/.88 = 3.96/.88 . .88/.88 = 1 so 1 'cancels' leaving x. 3.96/.88 = 4.5
x = 4.5
part c
4.5 is 4 1/2, the (previously unknown) number of pounds of apples.
Casey bought 4 1/2 pounds of apples.
10.50 divided by 2.5 = 4. The decimal in 2.5 is moved one space to the right. The decimal in 10.50 is moved 1 space to the right.
Yen paid $10.50 for 2.5 pounds of pretzels. What price did she pay for each pound of pretzels?
After dividing 25 into 105, the next step is to
25 by 4.
The next step is to
100 from 105.
The next step is to
the next number.
ill give brainliest
Answer:
Multiply, Subtract and bring down
Step-by-step explanation:
i took ed ofccc
Find the slope of the line through (6, -7) and (4, -8)
Answer:
1/2
Step-by-step explanation:
Y2-y1
________
X2-x1
-7 - (-8) = 1
6-4=2
Slope is 1/2
The slope of the line through (6, -7) and (4, -8)
What is the slope?The slope is the ratio of the vertical changes to the horizontal changes between two points of the line.
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
where (x₁, y₁) and (x₂, y₂) are the two points that you are trying to find the slope between.
Given;
Two points; (6, -7) and (4, -8)
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
m=(-8-(-7))/(4-6)
m=(-1)/-2
m=1/2
Therefore, the slope between the two given points will be1/2
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