Multiply.
(−0.64)(−2.5)
Enter your answer as a decimal in the box.
Answer:
1.6
Step-by-step explanation:
Hope this helps! :-)
What is the standard form of the equation of a circle whose diameter is 20 units and whose center is (−1,7)?
Drag an expression or value to the boxes to correctly complete the equation.
Answer:
[tex] (x + 1)^2 + (y - 7)^2 = 100 [/tex]
Step-by-sep explanation:
Given:
Diameter of circle = 20 units
Center of circle = (-1, 7)
Standard form of the equation of a circle is expressed in the center-radius form as:
[tex] (x - h)^2 + (y - k)^2 = r^2 [/tex],
Where,
h = -1
k = 7
r = ½ of diameter = ½(20) = 10 units
Plug in the values into the equation
[tex] (x - h)^2 + (y - k)^2 = r^2 [/tex]
[tex] (x - (-1))^2 + (y - 7)^2 = 10^2 [/tex]
[tex] (x + 1)^2 + (y - 7)^2 = 100 [/tex]
The equation of the circle is [tex]\mathbf{(x +1)^2 + (y -7)^2 =100}[/tex]
The standard form of the equation of a circle is:
[tex]\mathbf{(x -a)^2 + (y -b)^2 =r^2}[/tex]
From the question, we have:
[tex]\mathbf{(a,b) = (-1,7)}[/tex]
[tex]\mathbf{r = \frac{1}{2} \times 20 = 10}[/tex]
So, the equation becomes
[tex]\mathbf{(x -a)^2 + (y -b)^2 =r^2}[/tex]
Substitute values for (a), (b) and (r)
[tex]\mathbf{(x +1)^2 + (y -7)^2 =10^2}[/tex]
Express 10^2 as 100
[tex]\mathbf{(x +1)^2 + (y -7)^2 =100}[/tex]
Hence, the equation of the circle is [tex]\mathbf{(x +1)^2 + (y -7)^2 =100}[/tex]
Read more about equations of circles at:
https://brainly.com/question/23988015
13x456+345 divided by 45x265-256=?
Answer:
7703.66666667
Step-by-step explanation:
What is a secure line of credit?
a. A line of credit offered only to individuals with excellent credit ratings.
b. A line of credit offered to a business or corporation.
c. A line of credit backed by the government.
d. A line of credit backed by collateral.
Answer:
D. A line of credit backed by collateral.
Step-by-step explanation:
Answer:
D. A line of credit backed by collateral.
Step-by-step explanation:
did the quiz
IF UR GOOD AT PRECALC PLEASE HELP
Answer:
Answer is C, u can find this just by looking at domain
6. Sarah works in an appliance store. She gets a commission in addition to her hourly pay. She earns a 2% commission for sales up to $4000 and a 7% commission for all sales in a month above $4000. Last month her sales were $5400. How much was her commission?
Answer:
I wish I know this but I dont try using Google
Based on the information below, what are the values of x and y of the solution to the system of equations used to create
the information?
Answer:
x = 4; y = 12
Step-by-step explanation:
The value of x and y is 4,12., the correct option is C.
What is a Matrix?A matrix is an array of numbers or expressions used in mathematics to solve a system of equations.
The matrix A is
[tex]\begin{pmatrix}1/2 & 1/4\\ 9& -3\end{pmatrix}[/tex]
The matrix Ax is
[tex]\begin{pmatrix}5 & 1/4\\ 0& -3\end{pmatrix}[/tex]
The matrix Ay is
[tex]\begin{pmatrix}1/2 & 5\\ 9& 0\end{pmatrix}[/tex]
The determinant for all the matrices is
|A| = -15/4
|Ax| = -15
|Ay| = -45
The value of x is (|Ax|) /(|A|) = -15 / (-15/4) = 4
The value of y is ( |Ay|)/(|A|) = -45 /(-15/4) = 12
Therefore, the value of x and y is 4,12., the correct option is C.
To know more about Matrices
https://brainly.com/question/11367104
#SPJ2
The boiling point of water in the Fahrenheit scale is 212 degrees ?
True
False
Help
The answer fam is........True (212°F)
*50 POINTS* there is a picture of the problem, say what you got for x and explain how.
Answer:
x==18
Step-by-step explanation:
Original Question :
[tex]6 = \frac{x + 2}{3} [/tex]
(You will need to Find LCM)
[tex]6(6) = (\frac{x + 2}{?3})6[/tex]
(You will then multiply 6 by 6)
(With the three you will divide 6 by 3)
[tex]36 = (x + 2)2 \\ [/tex]
(Since three can divide 6 2 times that's why we have two outside the bracket)
36=2x+4
We got this and because you will multiply 2 by the ones in the bracket
So the 4 will cross the equal sign making it negative
[tex]36 - 4 = 2x[/tex]
You will then proceed to simplify which is going to be;
[tex]32 = 2x[/tex]
We got 32 because 36-4 is 32
After this you divide both sides by 2
[tex] \frac{36}{2 ?} = \frac{2x}{2?} [/tex]
36 divided by 2 is;, 18 and 2 will cancel each other out leaving x alone
So;
[tex]x = 18[/tex]
help me plz i dont get it its alot ill mark brainliest
Answer:
I CANT SEE IT sorry caops
Step-by-step explanation:
if i could see i could answer
Simplify the expression 4x^3 x 2x^3
Answer:
8x^6
Step-by-step explanation:
Brainliest
The area of a trapezoid is 864cm². It has a height of 24 cm, and the length of one of its bases is 30 cm. What is the length of the other base?
The area A of a trapezoid with height h and bases b₁ and b₂ is equal to the average of the bases times the height:
A = (b₁ + b₂) h / 2
We're given A = 864, h = 24, and one of the bases has length 30, so
864 = (b₁ + 30) 24 / 2
864 = (b₁ + 30) 12
864 = (b₁ + 30) 12
72 = b₁ + 30
b₁ = 42
in ABC, D∈AB so that AD;DB=1 : 3. If ACDB = 12ft2 Find AACD and AABC
Answer:
Area of [tex]\triangle[/tex]ACD = 4 [tex]ft^2[/tex]
Area of [tex]\triangle[/tex]ABC = 16 [tex]ft^2[/tex]
Step-by-step explanation:
Given that:
D is a point on AB.
and ABC is a triangle.
AD:DB = 1 : 3
Area of [tex]\triangle[/tex]CDB = 12 [tex]ft^2[/tex]
Kindly refer to the attached image as per the given dimensions and values.
To find:
Area of [tex]\triangle[/tex]ACD and Area of [tex]\triangle[/tex]ABC = ?
Solution:
Formula for area of a triangle = [tex]\frac{1}{2}\times Base \times Height[/tex]
The altitudes of triangles [tex]\triangle[/tex]CDB and [tex]\triangle[/tex]ACD are equal in dimensions.
Therefore the area of triangles [tex]\triangle[/tex]CDB and [tex]\triangle[/tex]ACD will be equal to the ratio of their bases.
Area of [tex]\triangle[/tex]ACD : Area of [tex]\triangle[/tex]CDB = AD: DB = 1 : 3
[tex]\Rightarrow[/tex] Area of [tex]\triangle[/tex]ACD = [tex]\frac{12}{3} = \bold{4 ft^2}[/tex]
Area of [tex]\triangle[/tex]ABC = Area of [tex]\triangle[/tex]ACD + Area of [tex]\triangle[/tex]CDB = 12 + 4 = 16 [tex]ft^2[/tex]
Therefore, the answer is:
Area of [tex]\triangle[/tex]ACD = 4 [tex]ft^2[/tex]
Area of [tex]\triangle[/tex]ABC = 16 [tex]ft^2[/tex]
If x = y and y = Z, which statement must be true?
A. ZX
B. -X Z
C. - x = -2
O
a
D. X Z
Answer:
D. XZ
Step-by-step explanation:
A company is packing cartons of candles. Each carton can hold 75 candles. So far, 50 cartons have been packed, but only 30 cartons have been loaded in the truck. How many more candles are left to load on the truck? Please help me
Answer:
34
Step-by-step explanation:
just guessing but u gotta really put a mind to it aha
write a linear equation in slope intercept form for a line that passes through the point 6,-2 and has a slope of -2/3
y=0.625x+1.75 is the equation for your problem.
What is the image point of
(
−
4
,
7
)
(−4,7) after a translation left 4 units and down 4 units?
Answer:2,7
Step-by-step explanation: I honestly don’t know this might not be right
For which equation does x = 2?
Answer:
what are the equations
Step-by-step explanation:
A new hard drive costs $225, plus $40 per hour for labor. The linear equation y = 40x + 225 gives the cost y in dollars for x hours of labor. If Jane has $385 to spend on computer repairs, using plug and chug strategy for x hours of labor, what is the maximum number of hours the computer technician can work?
Answer:
Step-by-step explanation:
225+40h=y
225 + 40x = 385
-225 -225
------- -------
40x = 160
x= 4
The cost of 24 pounds of cat food is $54. What is the cost per pound of cat food?
O $2.20
O $2.50
O $2.00
O $2.25
Answer:
$2.25
Step-by-step explanation:
To find the cost per pound you have to divide $54 by 24.
Pam wants to put a banner across her garage door to congratulate her son on his college graduation. The garage door is 12 feet high and 16 feet wide. How many feet long should the banner be to fit the garage door?
Answer:
20 feet is the answer
-4/7(1/3 x 22)
The answer must be written as a mixed number.
1. When developing an interval estimate for the difference between two sample means, with sample sizes of n1 and n2, A. n1 must be equal to n2 B. n1 must be smaller than n2 C. n1 must be larger than n2 D. n1 and n2 can be of different sizes
Answer:
D. n1 and n2 can be of different sizes
Step-by-step explanation:
When we are trying to develop interval estimate for difference between two populations, we first select two samples from these populations. We get the interval using the required statistic.
These are:
- Sample size of both populations. Which are n1 and n2 respectively.
- then the Sample mean of two populations
- sample standard deviation.
The samples of different sample sizes can be used and we are not obligated to make use of the same sample size.
which expression is equivalent to the given expression 4(a-3)
-8a
4a-12
4a-3
-4(a+30
Answer:
4a-12
Step-by-step explanation:
4(a-3)=4a-4×3=4a-12
find the original price of a pair of shoes if the sale price is $40 after a 60% discount
Answer:
Thus, the original price of the pair of shoes was $100.
Step-by-step explanation:
Percentages
After a 60% discount, the sale price is now valued at 100-60=40% of its original price.
If the sale price is $40, then the original price is calculated as
$40 / 40 * 100 = $100
Thus, the original price of the pair of shoes was $100.
Verify applying 60% discount:
$100 - 60*$100/100 = $40
Write the ratio as a fraction in simplest form. 27 to 72
Answer: The ration for 27:71, would be 3/8. Hope this helps!
Find the measure of angle b.
4)
36°
what do you guys think
Write the first 4 terms of the sequence defined by the rule. f(n) = n + 10
Answer:
n(1) = 11, n(2) = 12, n(3) = 13, n(4) = 14
Step-by-step explanation:
Marcus likes Nike sneakers. He paid $195 for a sneaker that originally cost $245. What is the percent discount of his purchase?
Answer:
21%
Step-by-step explanation:
195 divided by 245 = 0.79 approximately
100-79=21
Always divide the small number by the big number for percentages
Good luck!
A school wants to rent a cotton candy machine for a carnival. There is a deposit to rent it plus an additional $8 per hour. The total cost to rent the machine for 5 hours is $115. Assume the relationship is linear. Which equation represents this relationship?
