Step-by-step explanation:
y = 400 × 0.75
y = 300
300 milligrams = 0.75 hours
x = 3 hours
3(300) = 0.75x
900 = 0.75x
x = 1200
Select the correct answer. What are the solutions of this quadratic equation?
6x^2 + 6 = 12x + 18
[tex]x = 1 + \sqrt{3} [/tex]
[tex]x = 2 + 2 \sqrt[]{3} [/tex]
[tex]x = 2 + \sqrt{6} [/tex]
[tex]x = - 1 \: and \: x = 3[/tex]
Answer:
x=1+√3
Step-by-step explanation:
Let's solve your equation step-by-step.
6x^2+6=12x+18
Step 1: Subtract 12x+18 from both sides.
6x^2+6−(12x+18)=12x+18−(12x+18)
6x^2−12x−12=0
For this equation: a=6, b=-12, c=-12
6x^2+−12x+−12=0
Step 2: Use quadratic formula with a=6, b=-12, c=-12.
x=−b±√b2−4ac/2a
x=−(−12)±√(−12)2−4(6)(−12)/2(6)
x=12±√432/12
x=1+√3
Watch help video
Which of the following equations represents a line that passes through the points
(2,0) and (1, -4)?
I. 4.x - y = 9
II. y +4 = 4(x + 0)
Neither
I only
II only
I and II
Answer:
I think neither
Step-by-step explanation:
At a car wash fundraiser, $168 was raised for washing 24 cars. The next day, $280 was raised for washing 40 cars. Are the rates equivalent? Explain your reasoning.
Step-by-step explanation:
168/24 = 7 dollars per car
280/40 = 7 dollars per car
the rates are equivalent.
*ANSWER THESE PROBLE
Show your work to earn credit for your solution.
1. When Carlos bought a new office phone, he borrowed $1,000 at a rate of 7% for 8 months.
How much interest did he pay?
Show your work here:
1 = Prt
Please help
Step-by-step explanation:
The interest will be $560
Erica babysits for 4 1/2 hours and is paid $27 . If the people she babysits for have $31.50 to pay her, how long can they stay out?
Answer:
5.25 hours or 5 1/4 hours
Step-by-step explanation:
According to the scenario, calculation of given data are as follows,
Total time = 4 1/2 hours or 270 mins
Total payment = $27
First we calculate the time for $1, then
So, $27 = 270 mins
$1 = 270 ÷ 27 = 10 mins
Now, we can calculate total time in $31.50 by using following formula,
Total time in $31.50 = 10 mins × 31.50
= 315 mins
= 5.25 hours or 5 1/4 hours
is 15m 36m 39m right triangle
Answer is below. Look at my explanation to understand my answer.
To see if these lengths can make a triangle, we can use the "triangle side theorem."
The formula is:
a + b > c
a + c > b
b + c > a
So, with that being said...
15 → A
36 → B
39 → C
So, we can use the triangle side theorem by adding A & B, A & C, and B & C.
If the side length is greater than C, B, or A, it can make a triangle. But if it isn't greater than C, B, or A, it cannot make a triangle.
So, let's add 15 and 36 to see if it can make a triangle.
15 + 36 = 51
If you read above, C is 39.
So, 51 > 39
15 + 36 > 39 ✓
Let's repeat this process again.
Instead of C, B is what we're now seeing if the sum is greater than it.
15 + 39 = 54
54 is greater than 36...
54 > 36
So it is true.
15 + 39 > 36 ✓
Now, A is what we're seeing if the sum is greater than it.
36 + 39 = 75
75 is greater than 15...
75 > 15
So it is true.
36 + 39 > 15 ✓
So yes, these lengths can make a triangle.
Let me know of any questions or concerns.
A glass jar contains a total of 53 marbles. The jar has red, blue, and green marbles. There are 3 blue marbles, 6 green marbles, and
the rest are red. Determine which event is likely
OA. Picking a green marble
OB. Picking a blue marble
OC. Picking a red marble
OD. Picking a yellow marble
Answer:
c. picking a red marble.
Answer:
Picking a red marble. C.
Step-by-step explanation:
The current temperature is 48F. It is expected to drop 1.5F each hour. Determine how many hours the temperature will be 36 F.
Answer: 6 hours
Step-by-step explanation:
48/6 = 8
36/6 = 6
Draw a line to match each fraction, decimal, or percent in Column A to the equivalent value in Column B.
A B
40/50 1 3/4
13% 1 11/20
1.75 0.13
155% 80%
Answer:
This is the answer
Step-by-step explanation:
40/50 - 80%
13% - 0.13
1.75 - 1 3/4
155% - 1 11/20
Hope this helps
SOMEONE PLEASE HELP ME WITH THIS QUESTION ASAP AND SHOW WORK
Answer:
m∠XCY = 60°
Step-by-step explanation:
From the figure attached,
Circle has been given with the inscribed angles ∠XWY and ∠XCY formed by the same arc XY.
By the property of the inscribed angles,
"Measure of the inscribed angle formed by the same arc are equal"
m∠XWY ≅ m∠XCY
60x = 61x - 1
61x - 60x = 1
x = 1
Therefore, m∠XCY = 61x - 1
= 61(1) - 1
= 60°
821% of what number is 821?
(I'll mark brainliest if you give a valid answer)
Answer:
100
Step-by-step explanation:
100×821/100= 821
so the answer is 100
Which ordered pair is a solution of the inequality
y ≥ 4x - 5
A: (3,4)
B: (2,1)
C: (3,0)
D: (1,1)
Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
-4 x 3/2
Step-by-step explanation:
It will end up being -6 which is less than -4.
Tell me if it is wrong.
Have a nice day!
Answer:
We can use the numbers -4 and [tex]\frac{3}{2}[/tex] to get a product less than -4.
-4 x [tex]\frac{3}{2}[/tex] = -6
So, the answer is less than -4.
Please give Brainliest!
Have a great day!
Which value of x makes the inequality true
Answer:
the answer is D
you would end up with 14% and 14 is in between 12 ns 18
Step-by-step explanation:
1. Use the given key to answer the questions.
0.1
tenth
0.01
hundredth
0.001
thousandth
0.0001
ten-thousandth
a.
What number does this diagram represent?
b. Draw a diagram that represents 0.216.
c. Draw a diagram that represents 0.304.
Answer:
please where is the diagram
A factory makes car batteries. The probability that a battery is 1/14. If 400 batteries are tested how many are defective
Answer:
1/14 of 400 batteries = 56 batteries
Step-by-step explanation:
[tex]400 \times 0.14[/tex]
Answer:
Actual: 28.57
Rounded: 29
Step-by-step explanation:
400/14 = 28.57
Round to nearest whole number: 29
Correct on A P E X
What is the range of fat grams for the five sandwiches?
A. 15
B. 16
O c. 21
D. 21.2
.
O E. 24
Jennifer buys a desk on sale for $478.60. If the regular price was $684.00, what is the percentage of discount?
Answer:
30%
Step-by-step explanation:
Find the percent discount by dividing the change in the price by the original price:
(684 - 478.6) / 684
205.4 / 684
= 0.3
So, the percent discount was approximately 30%
A man has Rs 1900. he lent some of it at 5% p.a and rest at9% p.a. The total amount of interest which he got after4 years was Rs 580.Wwhat was the sum
ans= Rs650,Rs 1250
Answer:
The sum is Rs 1,250 and Rs 650
Step-by-step explanation:
Let the amounts be represented as $x and $y
The sum of both is 1900
Thus;
x + y = 1,900 •••••(i)
Mathematically, the interest on the amount borrowed is;
I = PRT/100
where p is the principal, representing the amount borrowed
R is the rate
T is the time
for the first amount of $x ; we have interest as;
I = (x * 5 * 4)/100 = 20x/100
for the second, we have
I = (y * 9 * 4)/100 = 36y/100
The sum of both is 580
Thus;
20x/100 + 36y/100 = 580
20x + 36y = 58000 •••••(ii)
From equation i;
x = 1,900 - y
Substitute this into equation ii
We have this as;
20(1900-y) + 36y = 58,000
38000 - 20y + 36y = 58,000
16y = 58000 - 38000
16y = 20,000
y = 20,000/16
y = 1250
From equation 1;
x + y = 1900
x = 1900-y
x = 1900-1250
y = 650
help needed asap will give brainliest
Answer:
the corect answer for this question is (-x,y)
Which point does not pass through?
10 Points
Answer:
C ( 9 , 15)
Step-by-step explanation:
The third quartile value for the
data set shown in the box plot
below is:
65
70
75
80
85
90
Answer:
85
Step-by-step explanation:
The q1 is 7-, q2 is 77.5 and the third quartile range is 85
Find the inverse of the following function.
f(x) = + 12
OA (1) = x
= 1 – 12
OB. (v) = 12 - Foto
oc. 5- (6) = x3 – 12
OD. 1-() =
= 1 + 12
Answer:
c
Step-by-step explanation:
exchange y and x
then find y
Find the minimum value of the function f(x) = 0.8x2 + 11.2x + 42 to the
nearest hundredth.
Answer:
The minimum value is 2.8. The vertex is (-7, 2.8).
Step-by-step explanation:
Through the x^2 term we identify this as a quadratic function whose graph opens up. The minimum value of this function occurs at the vertex (h, k). The x-coordinate of the vertex is
-b 11.2
x = --------- which here is x = - ------------ = -7
2a 2(0.8)
We need to calculate the y value of this function at x = -7. This y-value will be the desired minimum value of the function.
Substituting -7 for x in the function f(x) = 0.8x^2 + 11.2x + 42 yields
f(-7) = 0.8(-7)^2 + 11.2(-7) + 42 = 2.8
The minimum value is 2.8. The vertex is (-7, 2.8).
Jane used a Venn diagram to sort shapes. Select a plane shape that belongs inside the overlap region of the diagram.
Answer:
c
Step-by-step explanation:
Which of the following is equivalent to 16 ^3/4
Answer:
83/5
Step-by-step explanation:
83/5 would be equivalent to 16 3/4.
Answer:
8, or B on Edge.
Just took the quiz. Have a great day
ill choose brainliest if bestt
Answer:
A rectangle.
Step-by-step explanation:
The shape of the data distribution is a rectangle.
PLEASE IM BEGGING SOMEONE TO HELP WITH SCALE FACTOR!!!!!!!
Answer:
Ratio that would go in box b.
ratio=16:36
Ratio that would go in box c.
is =64:216
Ratio that would go in box d.
is=2:7
This can be found by 8:343 which represents 2³:7³
Means D denotes to exponent
3-D ratio falls under c
So
ratio on box c is
4³:6³64:216#4
Ratio on box D is 2:7 (Found at top)
#5
Box f is under 2-D
2²:7²
4:49For box b
the ratio is
4²'6²=16:36ASAPPPP
18. The steps used to solve the equation 2x + 8 = 20 for x are shown below.
2x + 8 = 20
Step I: 2x = 12
Step II: x = 6
Which property makes Step I true?
A. Division property of equality
B. Reflexive property of equality
C. Subtraction property of equality
D. Symmetric property of equality
Answer:
C. Subtraction property of equality
Step-by-step explanation:
WILL MARK BRAINLIEST!! FOR RIGHT ANSWERS
Answer:
1. -3
2. 0/4 or 0
3. -2/3
4. -4/-3
Step-by-step explanation:
Answer:
1. The slope is -3
2. The slope is -1
3. The slope is -1/2
4. The slope is 4/3
