Answer:
B, 4
Step-by-step explanation:
To do this you can use the Pathagaryos thereom a^2+b^2=c^2
So we have (x-2)^2+x^2=20
We can expand (x-2)^2 and get
x^2-4x+4
so we have x^2 -4x +4 + x^2=20
We can combine like terms and subtract 20 from both sides to get
2x^2-4x-16=0
We can factor this and get (2x+4)(x-4)
which means that x=4 and -2
Obviously the length can't be a negative and so we reject x= -2 and we get x=4
We can double check it and see that
(4-2)^2+4^2=20
and it does
The ratio of boys to girls in the entire 6th grade is 3 to 2. Given this ratio, which two class compositions are possible?
Answer:
There's an infinite number of possible answers because there might be any multiplication of 3 for boys and any multiplication of 2 for girls. So, for example:
There might be 3 boys and 2 girls.
There might be 6 boys and 4 girls.
There might be 9 boys and 6 girls.
There might be 12 boys and 8 girls.
etc...
In each case the ratio stays the same - 3 : 2.
Of course there probably can't be more than a few dozens of people in one class, but theoretically we can raise the numbers up to infinite.
Step-by-step explanation:hope this help.
if i start with a fraction my answer will be a _______.
If 5^-x = 25, what is the value of 5^0.5x?
Answer:
1/5
Step-by-step explanation:
[tex]5^{-x}= 25\\\\5^{0.5x) = (5^{-x})^{-0.5}\\\\=(25)^{-0.5}\\\\=(25)^{\frac{-1}{2}}\\\\=(\sqrt{25})^{-1}\\\\=5^{-1}\\\\= \frac{1}{5}[/tex]
This recipe makes 12 flapjacks.
How much of each ingredient is needed to make 18 flapjacks by following this recipe?
Recipe: Makes 12 flapjacks
140 g margarine
120 g sugar
100 ml syrup
240 g oats
50 g raisins
PLEASE HELPPP
Help ASAP don't spam please, its about exponents
Answer:
i think A
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
[tex] \frac{64 \times {5}^{ \sqrt{25} } \times {17}^{ \sqrt{27} \times {17}^{ - \sqrt{12} } } }{2 \times {5}^{5} \times 16 \times {17}^{ \sqrt{3} } } \\ \\ = \frac{64 \times {5}^{ 5 } \times {17}^{ 3\sqrt{3} \times {17}^{ - 2 \sqrt{3} } } }{32 \times {5}^{5} \times {17}^{ \sqrt{3} } } \\ \\ = \frac{2 \times {5}^{ 5 } \times {17}^{ 3\sqrt{3} \times {17}^{ - 2 \sqrt{3} } } }{{5}^{5} \times {17}^{ \sqrt{3} } } \\ \\ = \frac{2 \times {17}^{ 3\sqrt{3} - 2 \sqrt{3} } }{ {17}^{ \sqrt{3} } } \\ \\ = \frac{2 \times {17}^{ \sqrt{3}} }{ {17}^{ \sqrt{3} } } \\ \\ = 2[/tex]
Mrs trent spends £68 on her weekly food shop.
Answer:
a. 80%
b. £34
c. £340
Step-by-step explanation:
a. We are given that Mrs Trent spent 20% of her weekly wage on food. This means she would have 80% of her weekly wage left with her.
b. 10% of Mrs Trent weekly wage:
If 20% = £68
10% = (10*68)/20 = £34
c. Let x represent weekly wage of Mrs Trent
Given that she spends £68 of x (weekly wage) on food, which is 20% of x.
This means that, 20% of x = £68
Let's find her weekly wage, x:
[tex] \frac{20}{100} * x = 68 [/tex]
[tex] 0.2x = 68 [/tex]
Divide both sides by 0.2
x = 340
Her weekly wage is £340.
Answer:
a) 80%
b) £34
c) £340
Step-by-step explanation:
A -
100% - 20% = 80%
B -
68 = 20%
34 = 10%
c -
34 = 10%
340 = 100%
as you times both sides by 10
I hope this helps :)
Rose has a vase with 13 flowers. She puts 7 more flowers in the vase. How many flowers are in the vase?
Answer:
20
Step-by-step explanation:
if she has 13 flowers and adds 7 more that is 20 because 13+7=20
1-sin^2 theta/cot^2 theta
Simplify
Answer:
sin²θ
Step-by-step explanation:
Using the trigonometric identities
sin²x + cos²x = 1 ⇒ cos²x = 1 - sin²x
cotx = [tex]\frac{cosx}{sinx}[/tex]
Given
[tex]\frac{1-sin^20}{cot^20}[/tex]
= [tex]\frac{cos^20}{\frac{cos^20}{sin^20} }[/tex]
= cos²θ × [tex]\frac{sin^20}{cos^20}[/tex] ( cancel the cos²θ )
= sin²θ
Find the length of a square with a perimeter of 80 yards
Answer:
20 yes
Step-by-step explanation:
80÷4=20 there are 4 sides to a square
Solve for x:
3(x - 2) = 4x + 8
Answer:
Step-by-step explanation:
3x-6=4x+8
-8-6=4x-3x
-14=x
Answer:
x = -14
Step-by-step explanation:
3(x - 2) = 4x + 8
~Distribute left side
3x - 6 = 4x + 8
~Add 6 to both sides
3x = 4x + 14
~Subtract 4x to both sides
-x = 14
~Divide -1 to both sides
x = -14
Best of Luck!
Tony Stark had 484 Iron Man suits. He wanted to divide them into groups of 22. How many groups of Iron Man suits were there?
Answer:
22
Step-by-step explanation:
Determine the type of correlation that exists in the given data set. {(45, 18), (62, 13), (72, 11), (55, 15), (38, 21), (26, 31), (93, 9), (64, 13), (29, 28), (33, 25), (49, 17)} A. A positive correlation exists between the variables in this data set. B. A negative correlation exists between the variables in this data set. C. No correlation exists between the variables in this data set. D. There is not enough information to determine what type of correlation exists between the variables in this data set.
Answer:
D: There is not enough information to determine what type of correlation exists between the variables in this data set.
Step-by-step explanation:
as if you were to place all these dots unto a graph the data will be unclear as they're too scattered to come to a conclusion if it's positive or negative
Can someone please help
Answer:The top half is counting by 3s so you could do that and the answers for the bottom is 36 and then 48
Step-by-step explanation:
Answer:
3, 6, 9, 12, 15
12,24,36,48,60
Step-by-step explanation:the top row is going upby 3 and the second row by 12
if y=2x+2 and 4x+3y=26m, then find the value of x^2+y^2
Answer:
x² + y² is equal to = (4 / 81)(845m² + 78m + 18)
Step-by-step explanation:
We first need to get the values of x and y, which can be done using a system of equations, substituting one of the two functions into the other:
Given:
y = 2x + 2
3x + 3y = 26m
Then:
3x + 3(2x + 2) = 26m
3x + 6x + 6 = 26m
9x + 6 = 26m
9x = 26m - 6
x = (26m - 6) / 9
Now we can solve for y:
y = 2x + 2
y = 2(26m - 6) / 9 + 2
y = 2(26m - 6) / 9 + 18 / 9
y = (52m - 12 + 18) / 9
y = (52m + 6) / 9
Now we can sum up their squares:
x² + y²
= ((26m - 6) / 9)² + ((52m + 6) / 9)²
= (676m² - 312m + 36) / 81 + (2704m² + 624m + 36) / 81
= (3380m² + 312m + 72) / 81
= (4 / 81)(845m² + 78m + 18)
Sally has 50 pencils. 38% of them have stripes. How many pencils have stripes?
⚠️PLEASE SHOW WORK
Answer:
19
Step-by-step explanation:
Answer:
38 multiplied by 50/100 equals 19
Step-by-step explanation:
just multiply 38 and 50 then over 100 and divide then you should get 19
thx for help on he\the last one but i need some help on this one too
An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HELP
Answer:
Step-by-step explanation:
An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL
An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL
An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL
An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL
Lin has 13 mystery novels. Each month, she gets 2 more. Select all expressions that represent the total number of Lin's mystery novels after 3 months.
answer:
Lin should have about 19 novels in total when you add up all the amounts she gets after 3 months.
Find the length of the missing side (nearest tenth).
19 in
25 in
Please help me I don’t have much time please look at the picture
Answer:
Just add the painted miles
2 1/6 + 1 2/3
=3 5/6
then we subtact the total miles that wanna be painted which is 6
6 - 3 5/6
=2 1/6
The answer B
pls help asap Which ratios represent Pi
A. 66:21
B. 60:20
C. 45:15
D. 22:7
E. 21:7
The ratio 22:7 represent the value of π.
The correct option is D.
What is the ratio?The ratio is a numerical relationship between two values that demonstrates how frequently one value contains or is contained within another.
Given:
An expression: π
The value of π is 22/7.
In the ratio form the value is,
22:7.
Therefore, the ratio is 22:7.
To learn more about the ratio;
https://brainly.com/question/13419413
#SPJ2
Factorise the following 5y^2-20y-8z+2yz
Answer:
[tex](5y+2z)(y-4)[/tex]
Step-by-step explanation:
[tex]5y^2-20y-8z+2yz=\\5y^2-20y+2yz-8z=\\5y(y-4)+2z(y-4)=\\(5y+2z)(y-4)[/tex]
Can someone answer this please. I need to answer this before class ends and it ends at 8:40
Sarah has gone to work for the past 60 days. On 39 of those days she arrived at work before 8 AM. On the rest of those days she arrived after 8:30 AM. What is the experimental probability that she will arrive at 8 AM on the next day she goes to work.
Answer:
13/20
Step-by-step explanation:
Probability is the ratio of the number of possible outcome to the number of total outcome.
Given that for the past 60 days, on 39 of those days she arrived at work before 8 AM while for the rest of those days she arrived after 8:30 AM, the probability that she will arrive at 8 AM on the next day she goes to work
= 39/60
= 13/20
In decimal, this will be expressed as 0.65 and 65% in percentage.
What does this equal?
8m-6-2m-31
What is a positive conformity!
Answer:
the fact that people who conform generally do not run the risk of being ostracized by their peers
Step-by-step explanation:
help please will give brainliest
Answer:
The quadrilateral is a trapezoid
Step-by-step explanation:
Which function is represented by this graph?
Two linear functions, f (2) and g (2) are given below. Which function represents the sum of the two functions?
f (x) = -6x + 3 and g(x) = 3.3 - 5
O f(x) + g(x) = -92 – 8
O f() + g(x) = 9x + 8
Of(x) + g(x) = 3x - 2
O f(x) + g(x) = -32 – 2
please try to correct the the question.because the second function is a constant function.i mean it has an answer but it is not found in the match.
(x = 3)
Solve:
5х + 6 = 21
Answer:
5x+6=21 is the same as 15+6=21
Step-by-step explanation:
hope this is what you wanted :)