please explain i really don’t understand
Answer:
22.5°
Step-by-step explanation:
First we need to figure out the size of the interior angles on the inside.
The formula of figuring out the total degrees of all the interior angles of any shape is (n-2)×180°.
N is the number of sides.
If we substitute our number of sides (8) we get this:
(8-2)×180°
6×180° = 1080°
Then we divide 1080 by 8 since this is a regular octagon (all angles are equal in a regular shape).
1080° ÷ 8 = 135°
Focusing on the triangle now, we now know that the angle on the tip of the triangle is 135° as it has not been split by the line.
Using the rule of angles in a triangle add up to 180°. We do this sum:
180° - 135° = 45°
There are 2 angles left in the triangle so we do:
45° ÷ 2 = 22.5°
Therefore the angle of x is 22.5°.
0
-3 < n < 1
n is an integer.
Write down the possible values of n.
Answer:
-2,-1,0
Step-by-step explanation:
the integers between -3 and 1, not including -3 and 1 are
-2,-1,0
PLZ HELP ME THIS IS 7TH GRADE MATH I NEED HELP ASAP
Step-by-step explanation:
To get the circumference of a circle: 2[tex]\pi[/tex]×radius
Your circle has a given diameter of 3 feet.
To get the radius: 3 ÷ 2 = 1.5
To get circumference of this circle: 2 × [tex]\pi[/tex] × 1.5 = 9.424777961......
Answer:
Approximately 9.424 feet
Answer:
i am in 7th grade as well the answer is 9.42 rounded to the nearset of a tenth would be 9.4
Step-by-step explanation:
first find the radius by doing diameter ÷2
3÷2=1.5
1.5xπ
EXPERTS PLEASE HELP!!!!!!!!!!!!!!
Answer:
1. D
2. x=65
Step-by-step explanation:
Hi!
Your answer is D because 78 is 120% of x
120% in decimal point is 1.2.
So it's 1.2x is the same as 120% of x
For question 8:
1.2x=78
Isolate x by divide 1.2 on both sides
78/1.2=65
giving out brainliest!!
Answer:
A.
Step-by-step explanation:
An angle measures 172° more than the measure of its supplementary angle. What is the measure of each angle?
Step-by-step explanation:
x+ 172= 180-x
x+ 172= 180-x2x= 8
x+ 172= 180-x2x= 8x= 4°
180-4= 176
the angle is 4° and the measure of the other angle is 176°
Answer:
8
Step-by-step explanation:
what is x if :-1/3x-9=2
Answer:
x = -33
Step-by-step explanation:
-1/3 x - 9 = 2 add nine to both sides
-1/3 x = 11 multiply both sides by -3
x = -33
Hope that helps
- Josh and Gerald are having a throwing contest. Josh's first throw landed 20 feet away from the throwing line. They also measured that the
highest point of the throw occurred when the ball was 10 feet away from Josh and 30 feet in the air. Which equation models the path of Josh's
throw?
Answer:
y = -3x^2/10 + 6x
Step-by-step explanation:
100 points ASAP!
A scale drawing of Julie's living room is shown below:
A rectangle is shown. The length of the rectangle is labeled as length equal to 8 cm, and the width is labeled as width equal to 6 cm.
If each 2 cm on the scale drawing equals 4 feet, what are the actual dimensions of the room?
Length = 16 feet, width = 12 feet
Length = 10 feet, width = 8 feet
Length = 32 feet, width = 24 feet
Length = 14 feet, width = 12 feet
Answer:
Length = 16 feet, width = 12 feet
Step-by-step explanation:
The length is 8 cm. So divide this by 2 to find out how many 2 cm are in 8 cm. You get 4. Multiply 4 x 4 (ft) to find out the real length. This means the length is 16 feet.
Do the same steps with the width. The real length is 12 feet.
Hope it helps!
Answer
First off, nice 100 point scam, don't do it again, because you could get warned or even worse banned, second off Have a great day!
Length = 16 feet, width = 12 feet
Step-by-step explanation:
The length is 8 cm. So divide this by 2 to find out how many 2 cm are in 8 cm. You get 4. Multiply 4 x 4 (ft) to find out the real length. This means the length is 16 feet.
Do the same steps with the width. The real length is 12 feet.
Hope it helps!
Step-by-step explanation:
A stick 1 meter long casts a shadow 0.5 meters long. A building casts a shadow 16 meters long. How tall is the building?
Answer:
I think 8
Step-by-step explanation:
i think 8 because if you have 1 meter with .5 a meter shadow then i would think 16 meters would cast half of itself which would be 8
sorry if im totally wrong
An expression is shown below. Which expression is equivalent to the expression shown?
- 2x(x + y - 3) + 3(-x + 4y) + y(3x + 5y - 3)
- 2x2(5y2 + xy + 3x + 9y
- 2x2 + 5y2 + xy - 6x +9y
- 5x2 + 5y2 + xy + 3x + 9y
- 5x2 + 5y2 + xy - 6x + 9y
Note: In option A, it should be "+" instead of "(".
Given:
The expression is
[tex]-2x(x+y-3)+3(-x+4y)+y(3x+5y-3)[/tex]
To find:
The equivalent expression.
Solution:
We have,
[tex]-2x(x+y-3)+3(-x+4y)+y(3x+5y-3)[/tex]
Using distributive property, we get
[tex]=-2x(x)-2x(y)-2x(-3)+3(-x)+3(4y)+y(3x)+y(5y)+y(-3)[/tex]
[tex]=-2x^2-2xy+6x-3x+12y+3xy+5y^2-3y[/tex]
On combining like terms, we get
[tex]=-2x^2+5y^2+(-2xy+3xy)+(6x-3x)+(12y-3y)[/tex]
[tex]=-2x^2+5y^2+xy+3x+9y[/tex]
The expression [tex]-2x^2+5y^2+xy+3x+9y[/tex] is equivalent to the given expression.
Therefore, the correct option is A.
What is the measure of angle QZP
Answer:
22 degrees
Step-by-step explanation:
so if we take this here we know for sure that DZP is equal to 90 degrees
so DZP is split by QZD and QZP
so we take the 90 degrees we know for sure and then we take the two angle measurements we know
and we make this equation
9x + 5 + 3x + 1 = 90
and then we simplify this and it leaves us with
12x + 6 = 90
12x = 84
x = 7
so now that we have what x equals we plug that into QZP in order to find the actual measurement of this angle
3x + 1
3 (7) + 1
21 + 1
leaving us with our answer 22 degrees
and if you want to double check this answer just do the same thing we just did with QZD and plug in x into the equation and then add our answer 22 and the other answer you get for QZD and if that adds up to 90 then that is correct!
hope this helps!
3.
Use the Pythagorean Theorem or knowledge on special right triangles to
find the missing variable in the following triangles.
Part A:
Part B:
45°
9
30v2
45°
30V2
b
Answer:
Part A: [tex]l = 60[/tex], Part B: [tex]b = \frac{9\sqrt{2}}{2}[/tex]
Step-by-step explanation:
The Pythagorean Theorem determines the length of the hypotenuse of right triangle ([tex]r[/tex]) by means of following formula:
[tex]r^{2} = x^{2}+y^{2}[/tex] (1)
Where [tex]x[/tex], [tex]y[/tex] are respective lengths of each leg.
Now we proceed to solve on each triangle:
Part A: ([tex]r = l[/tex], [tex]x = y = 30\sqrt{2}[/tex])
[tex]l^{2} = (30\sqrt{2})^{2}+(30\sqrt{2})^{2}[/tex]
[tex]l^{2} = 3600[/tex]
[tex]l = 60[/tex]
Part B: ([tex]r = 9[/tex], [tex]x = b[/tex], [tex]y = \frac{9\sqrt{2}}{2}[/tex])
[tex]9^{2} = b^{2}+\left(\frac{9\sqrt{2}}{2} \right)^{2}[/tex]
[tex]81 = b^{2}+\frac{81}{2}[/tex]
[tex]b^{2} = \frac{81}{2}[/tex]
[tex]b = \frac{9\sqrt{2}}{2}[/tex]
The cost of a taxi journey is
£4 plus £3 per mile.
What is the cost of a journey of 7 miles?
A £7
B £21
C £25
D £31
Answer:
its C
Step-by-step explanation:
it's because 3x7 is 21 add 4 to that its 25 and that's your answer
Five less than the product of -3 and a number is -2.
Answer:
The equation is -3n-5=-2. The answer is -1.
Factor out the greatest common
factor: -16x? + 12x?
Answer:
4x is the greatest common factor of those two.
Step-by-step explanation:
(-16x + 12x)
4x (-4 + 3)
4x is the GCF
Why you may ask is 4x the GCF because when you divide 4x from both you're left with -4 + 3...... you can't take out the negative from the 16 because when you check your work negative 4x times 3 gives you negative 12x which isn't the equation you started with. So positive 4x times 3 give you 12x.
Hopes this helps!!!
please answer will give brainliest
Answer:
2 Gallons
Step-by-step explanation:
20.5ft x 16.4ft = 336.2
336.2 divided by 200= 168 gallons
Since you can not buy 1.68 gallons you will have to buy 2 galllons instead.
Can anyone help me with this please.
I’ll mark you as a brainliest.
Answer:
x = 21
Step-by-step explanation:
5x + 18 = 7x - 24
=> 5x - 7x = - 24 - 18
=> -2x = - 42
=> x = -42 / -2
=> x = 21
Hope it helps :)
Please mark my answer as the brainliest
A CD usually sells for $15.00. If the CD is 10% off, and sales tax is 6%, what is the total price of the CD, including tax?
Answer:
the total price of the CD, including tax is $14.31
Step-by-step explanation:
The computation of the total price of the CD including tax is shown below:
= Sale price - off percentage + sales tax
= $15 - ($15 × 10%) + 6% of the remaining value
= 15 - $1.5 + 6% of the remaining value
= $13.50 + 6% of $13.50
= $13.50 + $0.81
= $14.31
Hence, the total price of the CD, including tax is $14.31
PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!
PLSSSS SHOWWW THE WORKKK!!!!
Answer:
no hablo inglés xd no te puedo ayudar
Answer:
y^4/x^2
Step-by-step explanation:
i wish i could show the work but tbh i just use the link i comment under
Its helpful
An investment of £200 increases by 4% each year for 3 years
Calculate the value of the investment at the end of the period.
(Will give brainliest and 10 points)
Answer:
£224
Step-by-step explanation:
Given data
P= £200
R=4%
T=3 years
Simple interest
A= P(1+rt)
Substiute
A= 200(1+0.04*3)
A=200(1+0.12)
A=200*1.12
A=£224
Hence the investment at the end of the period is £224
what is the absoulute value
pls help
thanks so much
For every pound a company spends on advertising, it spends £0.26 on its website. Express the amount spent on advertising to the amount spent on its website as a ratio in its simplest form.
Answer:
Can you convert pounds to dollars?
Step-by-step explanation:
A shoe distributor sells a particular pair of shoes to a store for $42.80. The store then sells this pair of shoes to a customer at a 35% markup. How much money does the store make from selling one pair of shoes to a customer?
Answer:
$14.98
Step-by-step explanation:
The store bought the pair of shoes for $42.80.
If the store sells the pair of shoes at a 35% markup, then it is selling it at:
([tex]\frac{35}{100}[/tex] × 42.80 ) + 42.80 = 14.98 + 42.80 = $ 57.78
To calculate how much money the store is making from selling this pair of shoes:
57.78 - 42.80 = $14.98
The store would be making $14.98 for selling one pair of shoes to a customer.
Easy Cooking is a cooking supply company. Last year, the company sold a total of 5,340 ovens. This year, they sold 7,743 ovens. What is the percent of increase in the annual sales of ovens?
Answer:
45%
Step-by-step explanation:
Given data
Last year, the company sold a total of 5,340 ovens
This year, they sold 7,743 ovens
Percent increase= final-initial/initial*100
substitute
Percent increase= 7,743-5,340/5,340*100
Percent increase= 2403/5,340*100
Percent increase=0.45*100
Percent increase=45%
Hence the increase is 45%
Solve the system of equations by graphing. Check your solution. y=-3x+7 3x+y=4
Answer:
Step-by-step explanation:
Answer:
there are no solutions
Step-by-step explanation:
In y=-3x+7, -3 is the slope, and 7 is the y-intercept. In 3x+y=4, this equation also equals -3x+4=y. So, -3 is the slope, and 4 is the y-intercept. Once you graph the equations(as seen in the picture below) you should find where the lines intersect. Although, the lines are parallel since the slopes are the same.
Which answer choice gives three lengths that WILL form a triangle when put
together?
5,7,13
12, 18, 35
107,8,9
4.5.10
Answer:
none of them
Step-by-step explanation:
in order for them to be triangle lengths the two shorter size added together have to be greater than the longest side and in each answer choice if you add the two shorter sides none of them are greater than the longer side if that makes sense
Answer: what you need to find is the one where the two lowest numbers add up to be bigger than the biggest number. For example, if it was 3,7,5 then those could be right because 5+3=8 and 8 is bigger than 7. It is supposed to be that any two added is bigger than the third, but it's mist important that the smaller numbers equal more than the third
Step-by-step explanation:
Which of the following is a true statement?
A. All squares are rectangles.
B. All rectangles are squares.
C. All rhombuses are squares.
55% of students spent their trackouts on Netflix. What fraction of students
watched Netflix?
Answer:
11/20
Step-by-step explanation:
11/20
Answer:
55/100
Step-by-step explanation:
Beacsue % only equal %/100
x/5 + 2 = 19 x______
Answer:
47x=5
or 5/47
Step-by-step explanation:
Answer:
x=85
Step-by-step explanation:
x/5 + 2 = 19
5(x/5 + 2) = 5(19) *multiply both sides of the equation by 5 to get rid of the fraction
x + 10 = 95
x = 85 *subtract 10 on both sides
Check:
x/5 + 2 = 19
85/5 + 2 = 19
17 + 2 = 19
19 = 19