Answer:
One tank holds 45 gallons and the other holds 19.5 gallons.
Step-by-step explanation:
An item on sale costs 25% of the original price. The original price was $55.
Find the sale price.
Answer:
$68.75 cents
Step-by-step explanation:
Given the following question:
25% of 55
In order to find the answer, we must first use the formula to calculate percentages to calculate 25% of 55, then we use that answer to add on the initial amount.
[tex]\frac{p\times n}{100}[/tex]
[tex]\frac{25\times 55}{100} =25\times55=1375\div100=13.75[/tex]
[tex]=13.75[/tex]
Now add:
[tex]55+13.75=68.75[/tex]
[tex]=68.75[/tex]
After a 25% increase on an item that costs 55 dollars, the new sale price will cost "$68.75 cents."
Hope this helps.
Pre algebra that picture will help
Answer:
see below
Step-by-step explanation:
Line 2 (the line that is darker in your pic) is wrong because the sign for 8 goes from "+" to "-". It should be +4x-8 in order for it to be correct
Mr. Mole left his burrow that lies below the ground and started digging his way at a constant rate deeper into the ground.
Let yyy represent Mr. Mole's altitude (in meters) relative to the ground after xxx minutes.
Which of the following could be the graph of the relationship?
Answer:
[tex]A(t)=-1.8t-4.5[/tex]
Step-by-step explanation:
Mr.Mole's digging can be described by a linear model of general equation:
[tex]A(t)=m*t+c[/tex]
Where "m" is the rate at which he descends. Note that since the function A(t) measure his altitude relative to the ground, the rate "m" must be negative.
[tex](m=-1.8)[/tex]
[tex]A(t)=-1.8*t+c[/tex]
The constant "c" is his starting position. To find this value, assign the given data at t = 5 min to the equation above
[tex]-13.5=-1.8*5+c\\c=-4.5m[/tex]
Therefore, the function A(t) is described by the following formula:
[tex]A(t)=-1.8t-4.5[/tex]
Help me please if you can
same answers just different way to put them
25 ²²/27
697/27
25.814
A researcher is interested in determining if a psychic really has power to predict. The researcher takes four cards, each of a different type: king, queen, jack, and ace. After mixing up the cards many times and he selects one card without showing the psychic. The researcher asks the psychic which card was selected. The researcher records if the psychic was correct or not. The researcher does this two hundred times. If the psychic really has special abilities then he should pick the correct card more often then if it was by chance alone. The researcher is interested in determining if the card was identified correctly significantly more often then chance would suggest. What would be the null and alternative hypothesis for this case
It can be deduced that the null hypothesis is H: p = 0.25 and the alternative hypothesis is H: p > 0.25.
What is the null hypothesis?It should be noted that null and alternate hypothesis are written based on the population parameter.
From the information given, the claim is that they card was identified significantly more than chance would suggest. The proportion of card selected will be:
= 1/4 = 0.25
Therefore, the null hypothesis is H: p = 0.25 and the alternative hypothesis is H : p > 0.25.
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10,000 is invested at 5% interest rate p.a. Find the amount to be paid after 1 year.
Interest = 500
Step-by-step explanation:
Interest = [tex] \frac{p∗r∗t}{100} \\ [/tex]
p = principal amount , r = rate , t = time
Interest=[tex] \frac{10000 \times 5 \times 1}{100} \\ [/tex]
Interest = 500
Answer:
interest = RS. 500
Step-by-step explanation:
interest= 100/p*r*t
p∗r∗t
p = principal amount , r = rate , t = time
interest= 100/10000∗5∗1
On a world globe, the distance between city A and city B, two cities that are actually 5616 miles apart, is 8.5 inches. On the same globe, how far apart are city C and city D, two cities that are actually 5041 Miles apart?
Answer:
the distance between city C and D is 7.6 inches
given:
city A and city B is 8.5 inches, actually 5616 miles apart. city C and city D is x inches, actually 5041 miles apartsolving similarities:
[tex]\hookrightarrow \sf \dfrac{5616 }{8.5 } = \dfrac{5041 }{x}[/tex]
change sides
[tex]\hookrightarrow \sf 5616x = 5041(8.5)[/tex]
simplify
[tex]\hookrightarrow \sf 5616x = 42848.5[/tex]
change sides
[tex]\hookrightarrow \sf x = \dfrac{42848.5}{5616}[/tex]
simplify
[tex]\hookrightarrow \sf x = 7.62972[/tex]
rounded to nearest one decimal place
[tex]\hookrightarrow \sf x = 7.6[/tex]
Let that be x
Ratio remains same[tex]\\ \rm\bull\rightarrowtail \dfrac{8.5}{5616}=\dfrac{x}{5041}[/tex]
[tex]\\ \rm\bull\rightarrowtail 0.0015=\dfrac{x}{5041}[/tex]
[tex]\\ \rm\bull\rightarrowtail x=0.0015(5041)[/tex]
[tex]\\ \rm\bull\rightarrowtail x=7.6in[/tex]
How many 3/4 cup servings are in 10 cups
of juice? Use a model and an equation to
show your work.
The following shape has 0 pairs of parallel sides.
Answer:
67.5 UNITS 2
Step-by-step explanation:
1/2 x 3 x 5 = 7.5
35 + 25 + 7.5 = 67.5 units 2
The area of a 2D form is the amount of space within its perimeter.The area of the compound figure is 67.5 units².
What is an area?The area of a 2D form is the amount of space within its perimeter. It is measured in square units, such as cm², m², etc. To find the area of a square formula or any other quadrilateral, multiply its length by its width.
The area of the compound figure will be the sum of the different shapes and can be named as shown below.
The area of the compound figure = Area of triangle A + Area of triangle B + Area of rectangle C + Area of triangle D
[tex]\text{The area of the compound figure} = (0.5 \times 7 \times10) + (0.5 \times 5 \times5) + ( 5\times 3 ) +(0.5\times5\times2)\\\\\text{The area of the compound figure} = 35 + 12.5 + 15 + 5\\\\\text{The area of the compound figure} = 67.5\rm\ units^2[/tex]
Hence, the area of the compound figure is 67.5 units².
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The table represents the function f(x).
A 2-column table with 7 rows. The first column is labeled x with entries negative 4, negative 3, negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries negative 66, negative 29, negative 10, negative 3, negative 1, 6.
When f(x) = –3, what is x?
–29
–10
–3
–1
Answer:
-10
Step-by-step explanation:
The required value of x is -1 when f(x) = –3 for the given function. The correct answer is option (D) -1.
What is the function?The function is defined as a mathematical expression that defines a relationship between one variable and another variable.
The given table represents the function f(x).
x f(x)
-4 -66
-3 -29
-2 -10
-1 -3
0 -1
1 6
We are given a table representing the function f(x) and we need to find the value of x when f(x) = –3.
From the given table, we can see that when x = –1, f(x) = –3. Therefore, the answer is -1.
Hence, the correct option is:
(D) -1
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What is the slope and y-intercept for 7x+2y-15=13
Answer:
-3.5 14
Step-by-step explanation:
2y=-7x+28
y=-3.5x+14
Answer:
Y-intercept = (0, 14) and Slope = -7/2
Step-by-step explanation:
7x + 2y - 15 = 13
2y = -7x + 28
y = -7/2x + 14
Slope = -7/2
Y-intercept = (0, 14)
Name the quadrilaterals that have four equal sides.
A: rhombus, square
B: square, rectangle
C: parallelogram, rhombus
D:rhombus,trapezoid
1. A zoo has 340 animals and then increases the number of animals by 5%. How many animals are at the zoo now?
30 points!
Answer:
357
Step-by-step explanation:
Multiply: 340*1.05=357
Find the area of a trapezium whose parallel sides are 34 cm and 40cm and the distance between them is 20 cm
Answer:
area of trapezium: 740 cm²
Step-by-step explanation:
[tex]\sf {Area \ of \ trapezium = \frac{1}{2}* (base \ 1 \ + base \ 2) \ * height }[/tex]
Given here:
base 1: 34 cmbase 2: 40 cmheight: 20 cmusing the formula:
[tex]\sf {Area \ of \ trapezium = \frac{1}{2}* (base \ 1 \ + base \ 2) \ * height }[/tex]
solve:
[tex]\sf {\frac{1}{2}* (34 \ + 40) \ * 20}[/tex]
[tex]\sf {\frac{1}{2}* (74) \ * 20}[/tex]
[tex]\sf 74 * 10[/tex]
[tex]\sf 740[/tex]
8 added to the product of 7 and a number to equal to 12
Answer:
7n + 8 = 12
Step-by-step explanation:
I believe you're looking for an algebraic equation, but let me know if you need it to be solved! :)
Answer:
92
Step-by-step explanation:
Number equal to 12 is 12 ~ 8 added to the number (addition)
7 * 12 = 84
84 + 8 = 92
40 facts increased to 56. What is the percent increase?
Step-by-step explanation:
40 increases to 56.
To find the percent increase:
Subtract the increased value from the original value.
Divide the difference by the original value.
Multiply the quotient by 100 to represent the percent.
Solve:
[tex]56 - 40 = 16[/tex]
[tex]16 \div 40 = 0.4[/tex]
[tex]0.4 \times 100 = 40[/tex]
There's a 40% increase.
-
Which expression is equivalent to 7x2 + 16x – 15?
a. (7x+3)(x - 5)
b. (7x - 5)(x + 3)
C. (7x + 5)(x-3)
d. (7x - 3)(x + 5)
Step-by-step explanation:
only option (b) will give u 7x^2 + 16x -15
help me! it is due tomorrow
Choose all numbers that are divisible by 3
A 61377
B 87405
C 30898
D 6020
E 29830
F 75932
Answer:
A 61377
B 87405
Step-by-step explanation:
If sum of the digits of a number is divisible by 3, then that number is also divisible by 3.
Option A:
Given number is: 61377
Sum of the digits = 6+1+3+7+7 = 24
24 is divisible by 3, hence 61377 is also divisible by 3.
Option B:
Given number is: 87405
Sum of the digits = 8+7+4+0+5 = 24
24 is divisible by 3, hence 87405 is also divisible by 3.
Option C:
Given number is: 30898
Sum of the digits = 3+0+8+9+8 = 28
28 is not divisible by 3, hence 30898 is also not divisible by 3.
Similarly, sum of the digits of the numbers in options D, E and F are 8, 22 and 26 respectively, which are not divisible by 3, hence the numbers 6020, 29830 and 75932 are also not divisible by 3.
8) Use the slope formula to find the slope between
the points: (-1,2) and (3,- 3)
m =
Answer:
-5/4
Step-by-step explanation:
We can use the slope formula to find the slope
m = ( y2-y1)/(x2-x1)
= ( -3 -2)/( 3 - -1)
= ( -3-2 ) /( 3+1)
= -5/4
Answer:
m = -5/4
Step-by-step explanation:
The slope formula is [tex]\frac{y_2-y_1}{x_2-x_1}[/tex].
[tex]\frac{(-3)-(2)}{3-(-1)}[/tex] [tex]\frac{-5}{3+1}[/tex] [tex]\frac{-5}{4}[/tex]Therefore, m = -5/4.
Please help me with this one
Answer:
1) geometric sequence
2) geometric sequence
3) arithmetic sequence
Step-by-step explanation:
First two sequences are geometric sequences
The geometric sequences are sequences where each term is made by multiplying the preceding term by the same value
In here the first sequence is multiplied by 4
the second one is multiplied by -3
The third one however is set by adding 5 to the number each time
So the third one is an arithmetic sequence
2a +7= 15 answer please
Answer:
a = 4
Step-by-step explanation:
2a + 7 = 15
- 7 - 7
2a = 8
/2 /2
a = 4
Hope this helps!
Answer:
a=4
Step-by-step explanation:
We need to find a way to get (a) alone on one side.
first, we will subtract 7 from 15 to get 8.
Next, We will divide 8 by 2. to get 4
your work should look like this.
2a+7=15
2a=15-7
2a=8
a=8/2
a=4
Write a linear equation. Explain it in number please! 20 points!!!
To find a linear question, we must have two points on the line and we must know the slope.
Let us choose two points at random:
(-6,12) and (-5,14)
Now let us find the slope of the linear line:
[tex]m = \frac{y2-y1}{x2-x1} =\frac{14-12}{-5--6} = 2[/tex]
So the slope is 2.
Now let us set up the equation which now requires only one point and the slope
let us use the point (-6,12) and the slope of 2
[tex]y-12 = 2(x+6)\\y = 2x +12 +12\\y= 2x +4[/tex]
So the linear line is y = 2x + 4.
Hope that helps!
Geometric Shapes - Part 1
Answer:
x = 54, so the vertical angles are 110°.
Step-by-step explanation:
[tex]2x + 2 = 3x - 52[/tex]
[tex]2 = x - 52[/tex]
[tex]x = 54[/tex]
[tex]2(54) + 2 = 108 + 2 = 110[/tex]
[tex]3(54) - 52 = 162 - 52 = 110[/tex]
The diameter of a circle is 635 inches.
What is the radius, r, of the circle?
Enter your answer as a mixed number in simplest form by filling in the boxes.
Answer:
3 3/10
Step-by-step explanation:
proof is in the picture :)
The radius of circle is 3/17 1/2 inhces whose diameter is 635 inch.
We have,
The diameter of circle is 635 inches.
Also, we know that the radius of circle is half of the diameter.
So, r= d/2
Then, the radius of circle is
= 635/ 2
= 317 1/2
Thus, the required radius is 317 1/2 inches.
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What's the answers????
7.6 x 2.9 = ?
Answer:
22.04
Step-by-step explanation:
What is the slope and y- intercept for -10x+3y-6=10
Answer:
Slope = m = 10/3 and y-intercept = (0, 16/3)
Step-by-step explanation:
-10x + 3y - 6 = 10
3y = 10x + 16
y = 10/3x + 16/3
Slope = m = 10/3
y-intercept = (0, 16/3)
[tex]cos^{2} (\frac{1}{2}*arccos(-\frac{12}{13} ))[/tex]
Recall the half-angle identity,
cos²(x/2) = (1 + cos(x))/2
This means
[tex]\cos^2\left(\dfrac12 \arccos\left(-\dfrac{12}{13}\right)\right) = \dfrac{1 + \cos\left(\arccos\left(-\frac{12}{13}\right)\right)}2 = \dfrac{1 - \frac{12}{13}}2 = \boxed{\frac1{26}}[/tex]
If sin theta > 0 and tan theta < 0 then:
Answer:
C) 180° < theta < 270°
Step-by-step explanation:
Hope this helps
2n-31=10n-63 please help me
Answer:
n=4
Step-by-step explanation: