Answer:
i think letter D or C i also have this question
Answer:
its b
Step-by-step explanation:
i just did it
This is Adeles solution for the equation x^2+8x- 9 = 0 Step 1 x^2 +8x = 9 Step 2 x^2 +8x + 16 = 9 + 16 Step 3 ( x + 4 ) ^2 = 25 Step 4 x + 4 = 25 or x + 4 = - 25 Step 5 x = 21 or x = - 29. Where did Adele make her mistake? What are the solutions to this equation? Show all of your work. 2. Which would be the best method to use to solve the following equation. Explain your reasoning. A x^2 - 49 = 0 B. x^2 - 3x - 4 = 0 C. x^2 - 2x - 6 = 0
Answer:
Adeles forgot to square root 25 in step 4 therefore the solutions would be 1 and -9
Step-by-step explanation:
Equation : x² + 8x - 9 = 0
Step 1 : x² + 8x = 9
Step 2 : x² + 8x + 16 = 9 + 16
Step 3 : ( x + 4 )² = 25
Step 4 : x + 4 = 25 or x + 4 = - 25
Step 5 : x = 21 or x = - 29.
Sam buys
2 boxes of eggs costing £1.30 each
1 bottle of juice costing £2.60
3 baguettes
He pays with a £10 note and gets a 90p change.
Sam works out the cost of one baguette as £1.70
Is he correct?
You must show your working out.
Answer:
He is wrong
Step-by-step explanation:
£1.30(cost of 1 egg box) x 2=£2.60
2.60(2 egg boxes)+2.60(price of juice)=£5.20(amount spent without baguettes)
10-5.20(amount spent without baguettes)=£4.80
4.80/3=£1.60
£1.60=cost of one baguette
Sam is wrong as the cost of one baguette is £1.60
Given: m∠AKB = 25°
KO = 25
Find: V, Surface Area of of a cone
Please leave answers in term of Pi
Answer:
V = 255.98189 pi
SA = 172.64114π
Step-by-step explanation:
The first thing to do is find the radius.
the measure of angle AKO = 1/2 the measure of angle AKB
m< AKO = 12.5 degrees
Now use trig to find AO (aka the radius)
tan(12.5) = AO/25
AO = 25* tan(12.5)
I'm leaving it like this to get a more accurate number
Now to find the volume
the volume of a cone is pir^2h/3
plugging everything in we get:
pi(25*tan(12.5))^2 * 25/3
which is about 255.98189 pi
Now for surface area
(this is the moment I realize symbols exist)
SA = πr(r+√h²+r²)
plugging everything in we have
π(25tan(12.5))((25tan(12.5)+√625+(25tan(12.5))^2)
I know it looks like a lot but that's mainly because I left the radius as 25tan(12.5)
The Surface Area is about 172.64114π
Help please as soon as possible please and thank you :)
Answer:
A=[tex]\pi[/tex]r²
A=[tex]\pi[/tex]100
A=314.159
2 slices = 1/4
1/4x314.159=78.5399 centimters squared.
Paragraph:
Firstly, the question has an error. It says that the personal pan pizza is 80 cm³. It should be cm², since it’s area and not volume. You have to figure out the area of the 20 inch pizza using A=[tex]\pi[/tex]r². Since the diameter is 20, the radius is 10, and the area ends up being 314.159. Two slices is 1/4 of the diameter, or 0.25. Multiply 314.159x0.25, and. You get 78.5399 square centimeters. This is just under the 80 that he is allowing himself, so he has made the correct choice.
Step-by-step explanation:
A=[tex]\pi[/tex]r²
A=[tex]\pi[/tex]100
A=314.159
2 slices = 1/4
1/4x314.159=78.5399 centimters squared.
Paragraph:
Firstly, the question has an error. It says that the personal pan pizza is 80 cm³. It should be cm², since it’s area and not volume. You have to figure out the area of the 20 inch pizza using A=[tex]\pi[/tex]r². Since the diameter is 20, the radius is 10, and the area ends up being 314.159. Two slices is 1/4 of the diameter, or 0.25. Multiply 314.159x0.25, and. You get 78.5399 square centimeters. This is just under the 80 that he is allowing himself, so he has made the correct choice.
Find the measurement of angle X
A) 91°
C) 1360
B) 1050
D) 100°
Answer:
I think its B or C
Step-by-step explanation:
Use the drawing tool(s) to form the correct answers on the provided graph. In the given equation, y is a function of x. Graph the function in the coordinate plane. Use the Mark Feature tool to indicate the x- and y-intercepts of the function.
Answer:
Here is the graph of y is a function of x.
Someone help me with these two questions yuh 20 points
Answer:
option b is your answer. look it once
Find the AC
47in
14in
26in
7in
Answer: need more of an explanation
Step-by-step explanation:
Answer:
26 in.
Step-by-step explanation:
Since angles A and C are congruent, sides BC and BA are congruent.
7x - 13 = x + 29
6x = 42
x = 7
AC = 3x + 5
AC = 3(7) + 5
AC = 21 + 5
AC = 26
Answer: 26 in.
what is the value of X in log 2 (x)-3=1
2
Which equation best describes the graph? Please don’t just put anything down for points
8
6
2
-2
2
6
8
-2
1
6
-
A y = 3x + 2
C y = -3x + 2
B
D
ly= 3x + 2
y =
= -x + Ź
Answer:
C
Step-by-step explanation:
x3+43-12x2+x30 (x-6) (x+2)
solve it.
A bug ran along the number line from -5 to 23. What distance did it cover? If the whole run took the bug 4 minutes, what was its average speed?
Answer:
28 units and 7 units per minute.
Step-by-step explanation:
So if it's a negative number like -5 with a positive number, you have to add.
It would be like ( 5 + 23 ) = 28.
Since it took the bug 4 minutes, divide 28 ÷ 4.
28 ÷ 4 is 7 units per minute.
Sorry if it's wrong...
Help please! And can you show step by step work
Answer:
2.1134 liters
Step-by-step explanation:
There are 4 quarts in a gallon and each quart is 1.0567 liters. 2 quarts are 1/2 a gallon. 1.0567*2=2.1134
9514 1404 393
Answer:
2. 1.8927 L
3. 603.22 cm²
Step-by-step explanation:
To convert units, multiply by a ratio whose value is 1. That is, the numerator and denominator are equal amounts, but have units that cancel ones you don't want and give you units you do want.
2.
[tex]\displaystyle \frac{1}{2}\text{ gal}\times\frac{4\text{ qt}}{1\text{ gal}}\times\frac{1\text{ L}}{1.0567\text{ qt}}=\frac{4}{2\times1.0567}\text{ L}\approx\boxed{1.8927\text{ L}}[/tex]
__
3.
[tex]A=LW=(8.5\text{ in})(11\text{ in})\times\left(\dfrac{2.54\text{ cm}}{1\text{ in}}\right)^2=\boxed{603.2246\text{ cm}^2}[/tex]
_____
Additional comment
It can be helpful to remember that a liter is larger than a quart. So 2 quarts will be less than 2 liters. (You may recall reading on the half-gallon container that it holds 1.89 L.)
Which equation describes the asymptote of the exponential function represented by this graph?
A. Y= 3
B. Y= -3
C. X= -3
D. X= 3
Y= 3
Just did my test and got it correct
The correct equation describes the asymptote of the exponential function represented by this graph is,
⇒ y = 3
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Since, The exponential function of the type,
⇒ y = a (bˣ) + c
Which has the horizontal asymptote at y = c.
Hence, From the given graph, we can see that as x tends to positive infinity, Thus, the curve tends to;
⇒ y = 3
Thus, The correct equation describes the asymptote of the exponential function represented by this graph is,
⇒ y = 3
Learn more about the mathematical expression visit:
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Find the value of x
Please help
Answer:
128 degrees
Step-by-step explanation:
360-90-90-52=128
which is the best estimate of 2/5 + 1/7?
Answer:
2 / 35
Step-by-step explanation:
Please help I’m struggling
Answer:
y=3x+19
Step-by-step explanation:
x=3
(-4,7)(x,y)
y-7/x_-4=3
y-7=3(x+4)
y=3x+12+7
y=3x+19
Step-by-step explanation:
here you have the answer
Select the correct answer.
What is the value of g(-4)?
Answer:
C. 1
Step-by-step explanation:
Use the first one since it is -4 so [tex]\sqrt[3]{-4+5} = \sqrt[3]{1} = 1[/tex]
Answer:
c. 1
Step-by-step explanation:
A section of a deck is shaped like a trapezoid. For this section, the length of one base is 31 feet, and the length of the other base is 24 feet. The height is 14 feet. What is the area of this section of the deck?
Area of a trapezoid= (big base+small base)/2 x height
A=(67+54)/2 x 18
A=60.5 x 18
A=1089
Write the following rate as a simplified fraction 76 dogs to 48 cat
Answer:
Do u mean like 19/12
Step-by-step explanation:
Like 76/48 it will be 19/12
Hope I helped u!!
19/12 is the fraction which is represented by rate of 76 dogs to 48 cat.
To write the given rate, "76 dogs to 48 cats," as a simplified fraction, you need to express the number of dogs as the numerator and the number of cats as the denominator.
Therefore, the simplified fraction is:
76/48
To simplify this fraction, you can divide both the numerator and the denominator by their greatest common divisor (GCD), which is 4:
(76 ÷ 4) / (48 ÷ 4)
= 19/12
Hence, 19/12 is the fraction which is represented by rate of 76 dogs to 48 cat.
To learn more on Fractions click:
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Hey, I have some algebra questions, I need to complete for tomorrow. One of them is: Simplify 4a + 12a.
Answer:
16a
Step-by-step explanation:
4a+12a=16a since they are the same variables.
help with math please:)))))
Answer:
63 un²
Step-by-step explanation
Formula for Triangle = 1/2(b*h)
------------------------------------------------------------
Lets input our numbers
b(base) = 21
h(height) = 6
------------------------------------------------------------
Lets multiply
1/2(6 x 21) =
1/2(126) = 63
Now add the units
63 un²
Old Navy charges $30 for 4 t-shirts and $45 two pairs of pants. If Unique’s mom orders 9 t-shirts and 6 pairs of pants, how much will Unique’s mom spend?
Will mark brainliest to whoever helps!
What the geometric mean of 4 and 8
The table represents a linear function
Answer:
the answer is: False
{[(9 − 2) × 3] + 3} − 5 =
Answer:
look at the picture i sent..........
Which line has the same slope as the line passing through (-4, -1) and (-1, -7) ?
Answer:
D
Step-by-step explanation:
Answer:
athe correct answer of this question is 6x + 3y = 5
PLEASE HELP ME........
Answer:
d
Step-by-step explanation:
HELP ASAP!!! WILL MARK BRAINLIEST IF RIGHT!
Mr. Mole left his burrow that lies 7 meters below the ground and started digging his way deeper into the ground, descending at a constant rate. After 6 minutes, he was 161616 meters below the ground.
Let y represent Mr. Mole's altitude (in meters) relative to the ground after x minutes.
Complete the equation for the relationship between the altitude and number of minutes.
y=
Answer:
try dividing 161616 with 7 but I don't know what to do with the 6 sorry
Answer:
y=−1.5x−7
Step-by-step explanation:
mr. mole is descending as a constant rate, which means a linear equation. So, we must put it into slope-intercept form: y=mx + b, with m being slope or constant rate, and b being y-intercept