Need the answer and steps please
If f(x) = x2 + 5, find f(-9).
Answer:
f(-9) = 86
Step-by-step explanation:
Hi there!
f(x) = x² + 5
To find f(-9), replace x with -9:
f(-9) = (-9)² + 5
f(-9) = 81 + 5
f(-9) = 86
I hope this helps!
The perimeter p of the rectangle equals 30. Find the value of X?
Answer:
13
Step-by-step explanation:
The perimeter is calculated by multiplying the sum of width and height with 2
2*(4x-2+7x+9) = 300 solve inside the parenthesis
2*(11x+7) = 300 multiply inside the parenthesis with 2
22x + 14 = 300 subtract 14 from both sides
22x = 286 divide both sides by 22
x = 13
Find the measure of two complementary angles if the measure of one is 15 degrees more than twice the measure of the other
Answer:
25 and 65
Step-by-step explanation:
Let one of the angles be x.
So, the other angle is 15 + 2x
complementary angles add up to 90 degrees.
so, we have
x + 2x + 15 = 90
3x + 15 = 90
Subtract 15 from both sides
3x = 75
solve for x
x = 25
so, the angles are 25 and 65
2 complementary angles sum up to 90°.
Take one angle as 'x'. Then, the other angle will be '15 + 2x'.
15 + 2x + x = 90°
15 + 3x = 90°
3x = 90 - 15
3x = 75
x = 75/3
x = 25°.
Measure of 1st angle (x°) = 25°
Measure of 2nd angle (15 + 2x°) = 15 + 2*25 = 65°.
=》 The 2 complementary angles are 25° & 65°.
________
RainbowSalt2222 ☔
Who answer this right gets 10 pts!
Answer: 45 degrees angle
write an equation of the line below?
the test is already done but I don't have the answer scheme
Step-by-step explanation:
[tex] = {( \frac{3 {x}^{2} y}{x {y}^{ - 1} } )}^{2} \times ( \frac{4 {x}^{ \frac{1}{2}} {y}^{ - 2} }{ \sqrt{27 {x}^{3} } } )[/tex]
[tex] = {(3 {x}^{2 - 1} {y}^{1 - ( - 1)} )}^{2} \times (\frac{4 {x}^{ \frac{1}{2} } {y}^{ - 2} }{ {27}^{ \frac{1}{2} } {x}^{ \frac{3}{2} } } )[/tex]
[tex] = (3x {y}^{2} )^{2} \times ( \frac{4}{ {3}^{ \frac{3}{2} } } {x}^{ \frac{1}{2} - \frac{3}{2} } {y}^{ - 2} )[/tex]
[tex] =( {3}^{2} {x}^{1 \times 2} {y}^{2 \times 2} ) \times ( \frac{4}{ {3}^{ \frac{3}{2} } } {x}^{ - 1} {y}^{ - 2} )[/tex]
[tex] = ( {3}^{2} {x}^{2} {y}^{4} ) \times ( \frac{4}{ {3}^{ \frac{3}{2} } x {y}^{2} } )[/tex]
[tex] =4 \times {3}^{2 - \frac{3}{2} } {x}^{2 - 1} {y}^{4 - 2} [/tex]
[tex] = 4 \times {3}^{ \frac{1}{2} } x {y}^{2} [/tex]
[tex] = 4 \times \sqrt{3} xy[/tex]
[tex] = 4xy \sqrt{3} [/tex]
Examine the equation that follows. Fill in the missing pieces to create an
equation with no solution. Prove your reasoning.
-9y+ 7 = ?y + ?
Answer:
-9y + 7 = -9y + 6
Step-by-step explanation:
-9y + 7 = -9y + 6
Has no solution
add 9y to both sides
7 = 6 which is false
therefor no y exists that can result in a solution
Please help hurry hurry hurry fast
you make an invesment of 1,000 that you are not allowed to cash in for 10 years. the value decreases by 10% each year. how much money will be left at the end of the 10 year term
Answer:
0
Hope I helped
ma trận nghich đoa rlaf gì
Step-by-step explanation:
??? I don't understand pls? type on English
1. 63 is 90% of what number?
70
with double number lines-Super confused, please help!!
Answer:
70.
Step-by-step explanation:
Let x be the required number.
We are asked to find the number whose 90% equals to 63.
We can represent our given information in an equation as:
Now, we need to solve for x.
Therefore, 90% of 70 is 63.
Which graph bet suits the following function?
[tex]y=(\frac{8}{9})^{x}[/tex]
Graph 1 - The x y-coordinate plane is given. The curve enters the window just above the x-axis, goes up and right becoming more steep, crosses the y-axis at y = 1, and exits the window at the approximate point (10, 3.2).
Graph 2 - The x y-coordinate plane is given. The curve enters the window just below the x-axis, goes down and right becoming more steep, crosses the y-axis at y = −1, and exits the window at the approximate point (10, −3.2).
Graph 3 - The x y-coordinate plane is given. The curve enters the window at the approximate point (−10, −3.2), goes up and right becoming less steep, crosses the y-axis at y = −1, and exits the window just below the x-axis.
Graph 4 - The x y-coordinate plane is given. The curve enters the window at the approximate point (−10, 3.2), goes down and right becoming less steep, crosses the y-axis at y = 1, and exits the window just above the x-axis.
Step-by-step explanation:
Graph 3 - The x y-coordinate plane is given. The curve enters the window at the approximate point (−10, −3.2), goes up and right becoming less steep, crosses the y-axis at y = −1, and exits the window just below the x-axis.
Mr. Hansen baked 1,692 chocolate cookies he
package them into boxes of 36 cookies each how many boxes did he fill
Answer:
47 boxes
Step-by-step explanation:
Since each box has 36 cookies, we can divide the total number of cookies by 36 to find out how many boxes he could fill.
1692/36=47
Sophie has $4.20 worth of dimes and quarters. She has twice as many quarters as dimes. Find the total number of each coin.
Answer:
Sophie Has 7 Dimes, And 14 Quarters
Step-by-step explanation:
Sophie Had 7 Dimes, 7 Dimes, 7 Dimes!
Sophie Had 14 Quarters, 14 Quarters, 14 Quarters!
Sophie is Bill Nye's Daughter.
Together, teammates Pedro and Ricky got 2673 base hits last season. Pedro had 281 more hits than Ricky. How many hits did each player have?
2,673 minus 281 is 2,392.
2,392 divided by 2 is 1,196.
1,196 plus 281 is 1,477.
Answer: Ricky hit 1,196 and Pedro hit 1,477.
The United States Department of Agriculture reports that 14% of Americans are now on food stamps. If there are 340,000,000 Americans, how many are on food stamps?
Answer: 47600000
Step-by-step explanation:
340000000 * 0.14
= 47600000
A jet travels 4140 miles against the wind in 6 hours and 4680 miles with the wind in the same amount of time. What is the rate of the jet in still air and what is
the rate of the wind?
Answer:
690 miles per hour against the wind
780 miles per hour with the wind
Step-by-step explanation:
calculate: [ -26 (-26) ] + [ (7) x -0.89 ] = ????
Answer:
669.77
Step-by-step explanation:
Marking anybody who got it the brainliest
Answer:
c = sqrt 13.4689 rounded to sqrt 13.5 = 3.5
Step-by-step explanation:
maybe A+ B totals sqrt 13 = 3.60555128 if so they have rounded down for c to = 9 then 6 + 8 added on ay = sqrt 6+ 8 = sqrt 14 = sq rt 3.74165739 in all effect if triangular = average of a= b = 3.67^2 = 13.4689 then through Pythagoras c = sqrt 13.4689 rounded to sqrt 13.5 = 3.5
Last year, the school library had a total of x books. Over the summer, the library acquired another 36 books and now has a total of 2,284 books. Which
equation could be used to find x, the number of books the library had last year
Answer:
the last year the eschool has 2248 books
Step-by-step explanation:
2284-36=2248
Answer:
2,248=2,284-36b
Step-by-step explanation:
since the library acquired(added) 36 books the library now has a total of 2,284 books.
To find out how many books the library had before they added 36 books you need to set up a simple equation.
2,284-36=2248
since you now know that before summer the library had 2,248 books you would write an equation and when you solve it you should get 2,248. The equation should be 2,248=2,284-36b. b representing the total number of books that were added.
Hope this helped you!
x. y
-1. 2
0 4
2 8
4 12
This table shows a linear relationship.
The slope of the line is ?
Answer:
slope is 2
Step-by-step explanation:
Let the equation be y = mx +c , which is general form of equation for straight line or linear equation.
where m is slope , c is y intercept and ( x , y ) are ordered pair.
putting all the given values,
( refer attachment )
Which equation has a solution of r = 1/3
Answer:
Step-by-step explanation:
Any equation, for example 2r =2/3
The answer I need help so I don't have to.
._.
Jonah earns $3 an hour working after school and $4 an hour working on Saturdays. Last week he earned $43, working a total of 13 hours. How many hours did he work on Saturday?
Answer:x = amount of hours worked after school
y = amount of hours worked on saturday
x+%2B+y+=+13 or x+=+13+-+y
and
3x+%2B+4y+=+43
plug:
3%2813+-+y%29+%2B+4y+=+43
39+-+3y+%2B+4y+=+43
y+=+4
plug:
x+=+13+-+y
x+=+13+-+4+=+9
9 hours worked after school and 4 hours worked on saturday
Step-by-step explanation:
A parking garage charges $5.50 to park for 4 hours and $7.75 to park for 7 hours. If the cost is a linear function of the number of hours parked, what is the cost to park for 3 hours?
$2.25
$2.50
$3.25
$4.75
Answer:
$4.75
Step-by-step explanation:
Rafael is building a fence around his garden. For every 3 feet of fencing, the cost is $18.
Complete the table below showing the length of the fence and the cost.
Answer:
4 = 30
7 = 42
8 = 48
10 = 60
Step-by-step explanation:
The first thing you'll want to do is find the price for 1 foot of fencing.
18/3 = 6, which means that 1 foot of fencing costs $6. Then, either multiply or divide the number given by 6 to find the blank number. Hope this helps!
Answer:
30/18 = 1.666666667 x 3
1. 5/30
7/5 = 1.4 x 30 = 42
2. 7/42
48/42 = 1.4285714286 x 7 = 8
3. 8/48
10/8 = 1.25 x 48 = 60
4. 10/60
Step-by-step explanation:
you can use a equavilent fractions or ratios calculator to make sure this is 100% correct.
Help me pleaseeeeeee
Answer:
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
The length of a rectangular garden is 8 feet longer than its width. The garden's perimeter is 188 feet. Find the width of the garden.
Answer:
44 Feet
Step-by-step explanation:
Trust me
Answer:
Width = 43 feet
Step-by-step explanation:
Given the 188-feet perimeter of a rectangular garden, for which its length is 8 feet longer than its width:
We can express the length of the rectangular garden as: 8 + W.
Hence, in order to solve for the length and the width of the rectangular garden, use the following formula for the perimeter of a rectangle:
Perimeter (P) = 2(L + W) or 2L + 2W = 188 feet
Length (L) = 8 + W
Width (W) = W
Substitute these values into the perimeter formula to solve for the value of the rectangular garden's dimensions:
P = 2L + 2W
188 feet = 2(8 + W) + 2W
Distribute 2 into the parenthesis, (8 + W):
188 = 16 + 2W + 2W
Combine like terms:
188 = 16 + 4W
Subtract 16 from both sides:
188 - 16 = 16 - 16 + 4W
172 = 4W
Divide both sides by 4 to solve for W:
[tex]\LARGE\mathsf{\frac{172}{4}\:=\:\frac{4W}{4}}[/tex]
W = 43
Therefore, the width of a rectangular garden is 43 feet.
Since we determined that the length is 8 + W, then it means that the length of the rectangular garden is 51 feet.
Verify the dimensions:Double-check whether we have the correct dimensions for the rectangular garden by substituting the length (L) = 51 feet, and the width (W) = 43 feet, into the perimeter formula:
P = 2L + 2W
188 feet = 2(51) + 2(43)
188 feet = 102 + 86
188 feet = 188 feet (True statement). This means that we have the correct dimensions for the rectangular garden.
Answers:Therefore, the width of a rectangular garden is 43 feet.
Hey everyone! This questions is tricky for me so can anybody help me out?
I would be very grateful if you can!
g(x) = 2x^2
for g(- 4), you just plug in - 4 for x
g(- 4) = 2(- 4)^2
g(- 4) = 2(16)
g(- 4) = 32
Answer:
g(-4) = 32
Step-by-step explanation:
Given the quadratic function, g(x) = 2x², finding the output value given g(-4) involves substituting the value of the input, x = -4, into the function.
Solution:g(x) = 2x²
g(-4) = 2(-4)² = 2(-4)(-4)
g(-4) = 2(16)
g(-4) = 32
Therefore, g(-4) = 32.
