Answer:
140
Step-by-step explanation:
Let x2+8x=7 .
What values make an equivalent number sentence after completing the square?
Enter your answers in the boxes.
x2+8x+ ? = ?
Answer:
x²+8x+16=24
Step-by-step explanation:
x²+8x=7 (+16)
x²+8x+16=7+16=24
(x+4)²=24
The values to be entered in the boxes are 16 and 23.
Given the equation is [tex]x^2[/tex]+8x=7
To complete the square for the equation [tex]x^2[/tex] + 8x = 7, we need to add a constant term on both sides of the equation to create a perfect square trinomial on the left side.
First, take half of the coefficient of the x-term (8) and square it:
[tex](8/2)^2[/tex] = 16
Now, add 16 to both sides of the equation:
[tex]x^2[/tex] + 8x + 16 = 7 + 16
Simplifying:
[tex]x^2[/tex] + 8x + 16 = 23
Therefore, the equivalent number sentence after completing the square is [tex]x^2[/tex] + 8x + 16 = 23
The values to be entered in the boxes are 16 and 23.
Hence, [tex]x^2[/tex] + 8x + 16 = 23.
Learn more about completing the square in quadratic equations, click here:
https://brainly.com/question/12014272
#SPJ6
Consider matrix L, a 13x7 matrix. How many elements are in matrix L?
Answer:
14
Step-by-step explanation:
Answer: 25
Step-by-step explanation:
I got it wrong so heres the right answer
from edgunuity please help asap! image attached above
URGENT! BRAINLIEST ANSWER!!!
B 55.8)
nearest tenth associated ground elevation 10- stretched road and car = elevated protation. which is equivalent to 45 ( 0.08 added from the elevation plus the 10 = 55.8
help ASAP with working if possible
Answer:
1. The volume of the cylinder is approximately 0.153 m³
2. 25 cm
3. [tex]25.\overline 6 \ cm[/tex]
4. 16 m
5. 1,785 m³
Step-by-step explanation:
The volume of a solid can be found by the product of the uniform cross-sectional area of the solid and the (continuous) length of the solid
1. The uniform cross-sectional area of the given cylinder = The area of the circle at the base or top
The dimension of the diameter of the circle at the top of the cylinder, d = 50 cm = 0.5 m
The area of the circular cross-section, A = π·d²/4
∴ A = π × 0.5²/4 = 0.0625·π
A = 0.0625·π m²
The height of the cylinder, h = The continuous length of the circular cross-section = 78 cm = 0.78 m
∴ The volume of the cylinder, V = A × h
∴ V = 0.0625·π × 0.78 = 0.04875·π ≈ 0.153
The volume of the cylinder, V ≈ 0.153 m³
2. The given volume of the trapezium, V = 8550 cm³
The length of the short and long parallel sides 'a', and 'b', are 17 cm and 21 cm respectively
The height of the trapezium from the diagram, h = 18 cm
The cross-sectional area of the trapezium, 'A', is found as follows;
A = (17 cm + 21 cm)/2 × 18 cm = 342 cm²
The volume of the trapezium, V = The cross-sectional, A × The (missing) length, 'l' of the trapezium
∴ l = V/A
By substitution, we have;
l = 8550 cm³/(342 cm²) = 25 cm
∴ The Missing Length, l = 25 cm
3. The given volume of the solid having a uniform cross-sectional area is, V = 385 cm³
The area of the (uniform) cross-section of the solid, A = 15 cm²
∴ The length of the solid, 'l', from V = A × l, is given as follows;
l = V/A
∴ l = 385 cm³/(15 cm²) = 25.[tex]\overline 6[/tex] cm
The length of the solid, l = 25.[tex]\overline 6[/tex] cm
4. From the diagram, we have;
The cross-sectional area of the solid, A = 216 m²
The length of the solid, l = 16 m
5. The cross-section of the solid can can be assumed to be either;
1. A trapezium from which a rectangle has been removed of dimensions 8 m by 9 m.
2. A triangle located above a rectangle
For scenario one, we have;
The cross-sectional area, A = (12.5 + 9)/2 × 15 - 8 × 9 = 89.25
For scenario two, we find 'A' as follows;
A = 7 × 9 + 1/2 × 15 × 3.5 = 89.25
∴ The cross-sectional area of the solid, A = 89.25 m²
The length, 'l', of the solid, is given as l = 20 m
The volume of the solid, V = A × l
∴ V = 89.25 m² × 20 m = 1,785 m³
The volume of the solid, V = 1,785 m³.
Please help me
Kali and Kim each improved their yards by planting rose bushes and shrubs. They bought their supplies from the same store. Kali spent $32 on 2 rose bushes and 14 shrubs. Kim spent $26 on Il rose bushes and 2 shrubs. What is the cost of one rose bush and the cost of one shrub?
Answer:
$2 for 1 rose bush and $2 for one shrub
Step-by-step explanation:
32=2x+14y
26=11x+2y
32=2(2)+14(2)
32=4+28
32=32
26=11(2)+2(2)
26=22+4
26=26
Since both equations come out correct the cost of 1 rose bush is 2 dollars and the cost of one shrub is 2 dollars. kinda cool
Answer:
The cost of one rose bush is $2 and the cost of one shrub is $2.
Step-by-step explanation:
Let r represent the cost of 1 rose bush and s the cost of 1 shrub.
Kali's expenditure
2r + 14s = 32
Divide each term by 2
r + 7s = 16 ------ (i)
Kim's expenditure
11r + 2s = 26 ------ (ii)
From equation (i)
r = 16 - 7s
11(16 - 7s) + 2s = 26
176 - 77s + 2s = 26
-75s = 26 - 176
-75s = -150
s = -150/-75 = 2
r = 16 - 7s = 16 - 7(2) = 16 - 14 = 2
The cost of one rose bush is $2 and the cost of one shrub is $2
Cesar does the same number of push-ups everyday. On day 7 he had done a total of 35 push-ups. How many push-up does Cesar do each day? If he continues at this rate, how many total push-ups will he have done on day 10?
Answer:
first question
5 push-ups a day
second question
50 push-ups
Step-by-step explanation:
First, you must divide 35 divided by 7 because if Cesar does the exact same amount of push-ups a day, you can divide the total number of push-ups by how many days. Which gets you your first answer 5.
Then you multiply the number of days by the number of push-ups Cesar does in a day.
10 x 5 = 50
It tells to round to the nearest hundredth. Can anybody help?
Answer:
I can't see it very clearly but its
288m^2
Answer:
90m is the area. (not sure why it says hundredth we do not have any decimals)
Step-by-step explanation:
find the area of both the triangle and he rectangle
triangle - 18 (area = 0.5 * b * h)
rectangle =72. ( L x W)
add em together
The limo travels 50 miles per hour on average. How many feet per second does the limo travel? Round to the nearest tenth
Answer:
70 - 80 foot per second
Step-by-step explanation:
Multiply the speed value by 1,467
Can u pls help me with this question
Answer:
C. x<4
Step-by-step explanation:
1. Subtract 2 from both sides
2. You get x<4
Answer:
C) x < 4
Step-by-step explanation:
x + 2 < 6
x < 6 - 2
x < 4
I need help please!!
Answer:
1
Step-by-step explanation:
sike i lied this is so easy pls try pls
PLEASE HELP I NEED IT TO PASS THIS CLASS
Answer:
complement angle = 52 + 38 = 90°
supplement angle = 47 + 133 = 180°
Step-by-step explanation:
[tex]here \: is \: your \: solution \: \\ measure \: of \: one \: angle \: = 52 \\ let \: the \: other \: angle \: be = x \\ \\ x \: + 52 \: = 90 \\ x \: = \: 90 - 52 \\ x \: = 38 \\ now \: second \: question \\ x + 47 = 180 \\ x = 180 - 47 \\ x = 133 \\ hope \: it \: helps[/tex]
A supermarket had bags of grapes for $20.72 for 7. They also had bags of green grapes priced at 8.46 for 3. Which type of grapes is most expensive?
Answer:
The grapes are more expensive than the green grapes.
Step-by-step explanation:
GRAPES: If you divide $20.72 by 7, to get one bag of grapes instead of seven, you get $2.96/bag.
GREEN GRAPES: If you divide $8.46 by 3, to get one bag of green grapes instead of three, you get $2.82/bag.
$2.82 is less than $2.96, therefore, the grapes are more expensive than the green grapes.
Find the gradient of the line segment between the points (-1,3) and (1,-2).
Give your answer in its simplest form.
Answer:
The gradient of the line segment between the two points is -1
Step-by-step explanation:
The gradient of the line segment between two points is also known as the slope,
We can find this by using the formula; y₂ - y₁ / x₂ - x₁
The points given to us are;(-1,2) and (-2,3).
This implies x₁ = -1 , y₁=2 x₂ = -2 y₂= 3
We can now proceed to insert our values into the formula;
Gradient = y₂ - y₁ / x₂ - x₁
= 3 - 2 / -2-(-1)
= 1 / -2 + 1
=1/-1
Gradient = -1
Therefore the gradient of the line segment between the two points is -1
Heyy I'm the person who helped you with the test. Anyway I disagree with the person who answered on top. The correct answer is -5/2!
Which measurements could not represent the side lengths of a right triangle?
F 25 feet, 60 feet , 65 feet
G 9 feet, 12 feet, 15 feet
H 20 feet, 25 feet, 30 feet
12 feet, 35 feet, 37 feet
Janiya has a shoebox with a volume of 609 cubic inches. The length of the shoebox is 14.5 inches and the width is 7 inches. What is the height of the shoebox? Group of answer choices
Answer:
6 inches
Step-by-step explanation:
Hi there!
[tex]V=lwh[/tex] where l is the length, w is the width and h is the height of a rectangular prism
Plug in the volume (609), length (14.5) and width (7)
[tex]609=(14.5)(7)h\\609=(101.5)h[/tex]
Divide both sides by 101.5 to isolate h
[tex]\frac{609}{101.5} =\frac{101.5h}{101.5} \\6=h[/tex]
Therefore, the height of the shoebox is 6 inches.
I hope this helps!
What is the probability of a blue jay being the next bird papa sees?
Answer:
A) 0.421
Step-by-step explanation:
[tex]\frac{59}{59+68+12+1} =\frac{59}{140}[/tex]
[tex]Answer:0.421[/tex]
----------------------
hope it helps...
have a great day!!
joseph ordered 17 yards of lumber to build a tree house. how many inches of lumber did he order?
Answer:
612 inches.
Step-by-step explanation:
1 yard = 36 inches.
17 * 36 =
Answer:
612 inches
Step-by-step explanation:
1 yard = 36 inches
17 yards = 36 × 17 = 612 inches
What percent of the ninth graders scored above an 87?
Two angles are vertical angles. If one of the angles measures 35º and the other measures (4x+3)º, which algebraic equation can be used to solve for the value of x?
35 + 4x + 3 = 180
35 + 4x + 3 = 90
35 = 4x + 3
None of these are correct
4x + 3 = 90
35 = 4x+3
If they're vertical then they're worth the same or equal. So 4x+3 is equal to 35 and then you solve for x from there.
PLS GRAPH THE EQUATION!!
Answer:
Step-by-step explanation:
Helppp the tutorsss arent workinggg
Answer:
210.82
Step-by-step explanation:
arc length= 2pi r (Ø/360)
= 2x 3.14 x 47(257/360)=210.82
please help me people
Answer:
122.5 cm²
Step-by-step explanation:
a = 21cm
b = 14cm
h = 7cm
Area of given figure(trapezium) = [tex]\frac{a+b}{2} * h[/tex]
= 21 + 14/ 2 * 7
= 35/2 * 7
= 17.5 * 7
= 122.5 cm²
Aight so I got a grade of 44% on my module 6 exam... the assignment is worth 80 points and my grade is a 94.45%. I'm waiting on 2 unfinished essays. How much will this bring down my grade?
Answer:
It depends how many points you already have
Step-by-step explanation:
how much are the essays worth? i might be able to get your final score if you tell me
What is the measure of angle x?
A 44°
B 53°
C 83°
D 180°
Answer:
C
Step-by-step explanation:
53 + 44 + x = 180
97 +x = 180
x = 83
The are of a shaded region is 118 ft squared. Which equation can be- used to find the value of X, in feet?
Answer:
[tex]x^2+ 18x -130=0[/tex]
Step-by-step explanation:
Given
See attachment for diagram
Required
The equation to find x
First, calculate the area of the big rectangle using:
[tex]Area = Length * Width[/tex]
So:
[tex]A_1 = (x + 6) * (3x - 2)[/tex]
The smaller rectangle
[tex]A_2 = (x - 1) * (2x)[/tex]
The difference between this areas give the area of the shaded region.
So:
[tex]A_1 - A_1 = 118[/tex]
[tex](x+6)*(3x-2) - (x-1)*2x = 118[/tex]
Open brackets
[tex]3x^2 - 2x + 18x -12 -2x^2 +2x = 118[/tex]
Collect like terms
[tex]3x^2 -2x^2- 2x +2x+ 18x -12 - 118=0[/tex]
[tex]x^2+ 18x -130=0[/tex]
The above equation can be used to solve for x
PLEASE HELP 50 points
Answer:
r > 7 (C)
Step-by-step explanation:
3r−7>14
Step 1: Add 7 to both sides.
3r−7+7>14+7
3r>21
Step 2: Divide both sides by 3.
3r
3
>
21
3
r>7
Hope this helps and makes sense!! Good luck and have a wonderful day! <33
Imagine this < as a alligater and itś eating the greater number!!
Answer:
C.) r ≥ 7
Step-by-step explanation:
1. Add 7 to each side to cancel it out and keep the sign the way it is to avoid confusion
3r - 7 ≥ 14
+ 7 +7
3r ≥ 21
2. Divide each side by 3 to get the variable alone
3r/3 = r
21/3 = 7
r ≥ 7
This means r is greater than or equal to 7, and it can also be written as 7 ≤ r
D. 13 inches
(PLS HELP!!!!)
Answer:
A
Step-by-step explanation:
How long will it take the population of a certain country to double if it’s annual growth rate is 7.3%?
A cylinder has a volume of 99 cubic inches. If a cone has the same height and radius as the cylinder, what is the volume of the cone, in cubic inches?
Answer:
297 cubic inches
Step-by-step explanation:
Given: A cylinder has a volume of 99 cubic inches. A cone has the same height and radius as the cylinder.
To find: The volume of the cone in cubic inches.
Formula: The formula for the volume of a cone is V = [tex]\frac{1}{3}[/tex]hπr².
Solution: Firstly, find out the height and radius of the cylinder
... = 297 cubic inches