Answer:
Gift 1 ($9) Gift 2 ($10)
Step-by-step explanation:
First we know that Samir had 30 dollars to spend on 3 gifts. If he bought gift 1 for $9, and gift 2 for $10. Then Samir should have $11 for gift 3 that he can spend.
9+10=$19, $30-19=$11 Hope This helps! Mark Brainllest if it is correct!
Hence, the money did he have left for gift C is [tex]15.5[/tex].
What is the simplification?
Simplification is the process of replacing a mathematical expression by an equivalent one, that is simpler (usually shorter), for example Simplification of a fraction to an irreducible fraction.
Here given that,
Samir had [tex]30[/tex] dollars to spend on [tex]3[/tex] gifts. He spent [tex]9.\frac{9}{10}[/tex] dollars on gift A and [tex]4.\frac{3}{5}[/tex] dollars on gift B.
So,
[tex]A=9.\frac{9}{10}\\\\A=\frac{90+9}{10}\\\\A=\frac{99}{10}\\\\A=9.9[/tex]
[tex]B=4.\frac{3}{5}\\\\B=\frac{20+3}{5}\\\\B=\frac{23}{5}\\\\B=4.6[/tex]
To find out the money did he have left for gift C is
[tex]A+B+C=G[/tex]
Here,
[tex]A=9.9\\B=4.6\\G=30[/tex]
Then,
[tex]9.9+4.6+C=30\\\\C=30-9.9-4.6\\\\C=30-14.5\\\\C=15.5[/tex]
Hence, the money did he have left for gift C is [tex]15.5[/tex].
To know more about the simplification
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(3-4 +5-3)-²
help me
Answer:
1
Step-by-step explanation:
Answer:
Your answer is literally 1
Step-by-step explanation:
(3−4+5−3)2
=1*1
=1
Hope this is what your looking for
Find the percent of increase to the nearest whole percent from 12 to 20? Please help
tdrzfffffffffffffffffffffffffffffff
Answer:
AYEEEEEEEEEEEEEEEEEEEE
Step-by-step explanation:
My cousin borrowed $18,000 for a new car loan for 6 years. He told me that at the end of the loan, he had paid $25,560 for the interest and principal. What was the rate of the loan?
Answer:
6%
Step-by-step explanation:I
I'm going to assume that the interest is compoudning anually and there was only one payment
we know that
FV=PV(1+i)^N
which means taht
25560=18000(1+i)^6
Solve for i and get .06 or 6%
consider the graph f(x)=3 to the power of x. describe how to graph the transformation f(x-3)+2
Answer:
shift the graph horizontally to the right for 3 units and then shift vertically up 2 units
Step-by-step explanation:
f(x) = x³ vs f(x-3)+2
f(x-3) will shift the graph horizontally to the right for 3 units
+2: will shift vertically up 2 units
Last year, Kaitlin opened an investment account with $8600. At the end of the year, the amount in the account had decreased by 28%. (a) Fill in the blank to write the year-end amount in terms of the original amount. Write your answer as a decimal. Year-end amount = 1 x Original amount
Answer:
Kaitlin's account will have 72% of the money initially invested, that is, about $ 6,192.
Step-by-step explanation:
Given that last year Kaitlin opened an investment account with $ 8,600, and at the end of the year, the amount in the account had decreased by 28%, to determine the year-end amount in terms of the original amount both in whole numbers and in decimals, the following calculation must be performed:
100 - 28 = 72
8,600 x 0.72 = X
6.192 = X
Thus, Kaitlin's account will have 72% of the money initially invested, that is, about $ 6,192.
An oak tree is planted when it is 750 centimeters tall. What is this height in meters?
Answer:
7.5
Step-by-step explanation:
750/100=7.5
Answer:
7.5 meters
Step-by-step explanation:
If 100cm=1m
Then 750cm= 750÷100
Therefore 750cm to meters= 7.5m
Add.
(2x4+x3−4x2+3)+(4x4−2x3−x2+10x+2)
Express the answer in standard form.
Enter your answer in the box.
Answer: 6x^4-x^3-5x^2+10x+5.
Step-by-step explanation:
Answer:
See screenshot
Step-by-step explanation:
HELP PLEASE! This is due tomorrow and I’m confused
upload a more detailed picture please
4x – y = 7 3y – 12x = –21
Answer:
y=4x-7 3(4x-7)-21x=-21 12x-21-12x=-21 -21=-21
Step-by-step explanation:
What is equivalent to 4x + 6y
Answer:
Is that all...
Step-by-step explanation:
Is there any other information if not then it is impossible to answer that question.
Pls help Factor 4x^3+32
Answer:
Step-by-step explanation:
The greatest common factor they share is 4.
[tex]4(x^3+8)[/tex]
You can buy six cans of root beer for $18. How much will she pay for 27
cans?
Answer:
162$$
Step-by-step explanation:
What is the value of x?
Answer:
Step-by-step explanation:
Step One
Find the supplement of both exterior angles. They both have angles that add with them to make 180 degrees.
x + 105 = 180 Subtract 105 from both sides
x = 180 - 105
x = 75
y + 148 = 180 Subtract 148 from both sides
y = 180 - 148
y = 32
Step Two
There are two ways to conclude the problem. You could find the value of the 3rd angle of the triangle, or you could notice that x is going to be the sum of the 2 angles you just found. These two angles are called the remote interior angle.
Method One
x = 32 + 75
x = 107
Method Two
32 + 75 + y = 180
107 + y = 180
y = 180 - 107
y = 73
The sum of x + 73 = 180
x = 180 - 73
x = 107
Which point on the number line represents -4
Answer:
A
Step-by-step explanation:
pls thank
5 star
brainliesrt
Help me and you get 100 points and Brainliest
The table shows the test scores and the sleep averages of several students.
a. Write the least squares regression equation that models the data. Let x = hours of sleep and y = test score.
b. Use the equation to determine the approximate test score of a student who sleeps an average of 8 h a night. Show your work.
hey someone else has already answered this!
a. To find the least squares regression equation for a group of (x,y) points:
Step 1: For each point(x,y), we need to calculate x² and xy first.
Step 2: Sum all x, y, x² and xy, which gives us Σx, Σy, Σx² and Σxy
Step 3: Calculate Slope m: m = (NΣxy − Σx Σy)/ N(Σx²) − (Σx)² , here N is the number of data.
Step 4: Calculate Intercept b: b = Σy − m(Σx)/ N
Step 5: Assemble the equation as y= mx+b
Here, we have ∑x = 120, ∑y= 1379, ∑x²= 919.5, ∑xy= 10466 and N= 16
So, m= (NΣxy − Σx Σy)/ N(Σx²) − (Σx)²
=
=
=
= 6.33
and b = Σy − m(Σx)/ N
=
=
=
= 38.71
So, the least squares regression equation is : y= mx+b ⇒ y= 6.33x +38.71
b. When x= 8, then y= (6.33×8)+38.71 = 50.64 + 38.71 =89.35
The approximate test score of a student who sleeps an average of 8 h a night is 89.35%
EVERYTHING IS FROM sicista on brainly!
Answer:
A way to write the least regression equation that models is data y = mx + b => y= 6.33x + 38.71 and as for problem B when X = 8 then y = (6.33 x 8) + 38.71 = 50.64 = 38.71 = 89.35 so the estimated test score of a student who sleeps eight hours a night is equal to 89.39%
Step-by-step explanation:
(a) Reflect the point (6, 8) across the y-axls:
(b) Reflect the point (6, 8) across the X-axis:
Answer:
A: 6,8 = negative 6,8
B: 6,8 = 6,negative 8
Step-by-step explanation:
hope i helped you (could i have brainiest if possible)
if the simple answer interest on 2,000 for 10 years is 1,600, then what is the interest rate
Answer:
8%
Step-by-step explanation:
Solving our equation
r = 1600 / ( 2000 × 10 ) = 0.08
r = 0.08
converting r decimal to a percentage
R = 0.08 * 100 = 8%/year
The interest rate required to
accumulate simple interest of $ 1,600.00
from a principal of $ 2,000.00
over 10 years is 8% per year.
The perimeter of a quadrilateral garden is 4x2+3x-4. The first side is represented by x2+2x+15. The second and third sides are each represented by x2-x-10. What expression represents the fourth side? Write a justification of your result.
Answer:
[tex]y = x^{2} + 3x + 1[/tex]
Step-by-step explanation:
Perimeter equals the sum of the lengths of the sides.
Let y = the length of the fourth side
[tex]4x^{2} + 3x - 4 = x^{2} + 2x + 15 + x^{2} -x - 10 + x^{2} - x - 10 + y[/tex]
[tex]4x^{2} + 3x - 4 = 3x^{2} - 5 + y[/tex]
[tex]x^{2} + 3x + 1 = y[/tex]
plzzzzzzzzzzzzzzzzzzzzz oh plzzzzzzzzz help
Answer:
y=13/11x+12/11 (assuming you want it in slope-intercept).
Step-by-step explanation:
PLEASE HELP ! (no fake answers)
Answer:
lol
Step-by-step explanation:
Cindy bought 5 dresses for $20 each and 3 pairs of shoes for $20 each. She used this expression to calculate the total amount she spent.(5 × 20) + (3 × 20) What is another expression to calculate the total amount spent?
Answer:160 dollars
Step-by-step explanation: 5x20 is 100 plus 3x20 is 60 which makes 160
rationalise the denominator by 6 root 7 minus 1
Answer:
Assuming the numerator was 1.
[tex](6\sqrt{7}+1)/251[/tex]
Step-by-step explanation:
Assuming the numerator was 1.
[tex]1/(6\sqrt{7} -1)\\ (6\sqrt{7}+1)/((6\sqrt{7} - 1)(6\sqrt{7} + 1))\\ (6\sqrt{7}+1)/((6\sqrt{7})^2 + 6\sqrt{7} - 7\sqrt{7} - 1)\\(6\sqrt{7}+1)/((6\sqrt{7})^2 - 1)\\(6\sqrt{7}+1)/((36*7 - 1)\\(6\sqrt{7}+1)/251[/tex]
Explain how you would determine the slope and y-intercept of a line
when given a table, graph and an equation.
I KISS YOUR TOES IF YOU HELP ME
Answer:
slope is m= y_2-y_1/x_2-x_1 and the y-intercept is where the line crosses over the x-axis
Step-by-step explanation:
fill in the points and do the equation m= rise(y points)/ run(x points)
m=slope
(x_1, y_1) =coordinates of first point in the line
(x_2, y_2)=coordinates of second point in the line
Can you help me please
Answer:
Step-by-step explanation:
y ∝ x
y= k*x
As given y =-16, x=4 putt in above formula to get value of K
k = -16/4 = -4
Hence also given that ,
y =20
k = -4
x= ?
x= y/k (using formula)
x =20 / -4
x = -5
Peter goes for a walk.
He walks 15 miles in 6 hours.
Workout Peter's average speed.
Give your answer in miles per hour.
Answer:
2.5 miles per hour
Step-by-step explanation:
Just take 15 decide by 6 if I am not wrong
Answer:
2.5 miles per hour
Step-by-step explanation:
6 divided by 6=1 hour.
15 divided by 6= 2.5
similarities transformations
Answer:
B 1/3 then reflection across y axis then move figure 2 units to down and 1 right.
Step-by-step explanation:
The figure ABC is bigger than FED so the scale factor is less than one since we are going to ABC to FED. Let look at corresponding sides, AB and FE. AB distance is 3. FE distance is 1 so let divide
[tex] \frac{fe}{ab} [/tex]
[tex] \frac{1}{3} [/tex]
The scale factor is 1/3.
The new points are at A'(-2,0) B'(-2,1) C'(-1,0).
Then we apply reflection.
Since FED is in the 4th quadrant, we are going to reflect across the y axis.
That becomes using formula
(x,y) goes to (-x,y) when reflecting across yaxis.
A''(2,0) B''(2,1) C''(1,0)
Now we will apply the translation. We can simply just move the figure 2 units down and 1 unit to the right.
Answer:
b
Step-by-step explanation:
I need help with Geometry
A basketball team decided to sell cookies to raise money for an upcoming tournament. The players charged $3.00 for each cookie they sold. In 4 days, they sold 28 cookies. How much money could the team earn from selling cookies for six days at that same rate? * 25 points $126 $84 $42 $7 (Helping my daughter with math and i don't understand help pls :)
Answer:
187
Step-by-step explanation:
Answer:
$126
Step-by-step explanation:
They need to know how much money they would make in 6 days so we need to find out how much each day they make. so it would be 28/4 = 7 so they sold 7 cookies each day so it would be 7 * 6 (The days and the cookies multiplied then we do this by 3 dollars to figure out how much money) = 42 cookies * 3 = 126. I am glad I could help you!!
(7x-8)(-1) PLEASE HURRY ITS A TIMED QUESTION !!!
Answer:
Is x a vairable? If x is a vairable, then your answer will be 56x. If x is not a vairable, and means a multiplication sign, then your answer will be 56.