Hi!
These can be set up as systems of equations.
Let b = the number of birds, and let d = the number of dogs.
b + d = 21
2b + 4d = 76 (this is because birds have 2 legs and dogs have 4 legs.)
You can solve this using either elimination or substitution.
Consider marking brainliest.
What is the image of (0, -8) after a reflection over the line y = -x?
Submit Answer
Answer:
(8,0)
Step-by-step explanation:
could be negative 8 but it said positive 8
positive works
The required reflection of the point (0, -8) on the line y = -x is (8, 0).
To determine the image of (0, -8) after a reflection over the line y = -x.
the equation is the relationship between variables and represented as y = ax + b is an example of a polynomial equation.
Here,
For the image of the point of the line y = -x
The reflection of point (0, - 8) is given as by swaping the value and change the sign, So the image of the point is (8, 0).
Thus, the required reflection of the point (0, -8) on the line y = -x is (8, 0).
Learn more about equation here:
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There are 150 males and 50 females participating in a marathon. What percent of the participants are female?
Hey there!
Answer: 25% of participants are females
Add both M and F = 200
50 + 50 + 50 + 50 = 200
=> 50 + 150 = 200
each 50 is 25% of 200
Therefore, the percentage of females in the race is 25%
Answer:
50+150=200
female=50
50÷200×100=25%
percentage of female=25%
Two boxes are shaped as right rectangular prisms. The larger box is having a length of 24 cm, a width of 10 cm, and a height of 30 cm. The dimensions of the smaller box are half the dimensions of the larger box. What is the volume of the smaller box? Enter your answer in the box. cm³
Answer:
The volume of the smaller box is 900cm³
Step-by-step explanation:
Given:
larger box dimensions: 24cm by 10cm by 30cm
dimension of smaller box: 1/2 of larger box:
12cm by 5cm by 15cm
Volume of smaller box: Length×Width×Height
=12cm×5cm×15cm
=900cm³
PLLSSS hEELPPPP
What is the inverse of the following statement?
If two triangles are congruent, then their corresponding angles are congruent.
A. If the corresponding angles of two triangles are congruent, then the triangles are congruent.
B. If two triangles are not congruent, then their corresponding angles are not congruent.
C. If two triangles are congruent, then their corresponding angles are congruent.
D. If the corresponding angles of two triangles are not congruent, then the triangles are not congruent.
Answer:
A
Step-by-step explanation:
A, because you just have to flip the cause and effect.
If two triangles are congruent, then their corresponding angles are congruent.
So, if the corresponding angles are congruent, then the triangles are congruent
You can use this property for problems similar to this one, that have cause and effect relationships.
There are approximately Pi times 10,000,000 seconds in one ____?
30 points pls show work thank you so much!!!
Answer:
The first 1000000 pi contain: 99959 0s, 99758 1s, 100026 2s, 100229 3s, 100230 4s, 100359 5s, 99548 6s, 99800 7s, 99985 8s and 100106 9s.
The number of seconds in a year are 31,557,600 seconds, which gives;
There are approximately Pi times 10,000,000 seconds in one year.
How can the given statement be completed?The number of seconds in one day = 86,400
The number of seconds in one week = 604,800
The number of seconds in a year = 31,557,600
Therefore;
[tex]\mathbf{\dfrac{The \ number \ of \ seconds \ in \ a \ year}{10,000,000}} = 3.1557600 \ which \ is \ close \ to \3.14159 \approx \pi[/tex]
Which gives;
The number of seconds in a year ≈ π × 10,000,000
The completed statement is therefore;
There are approximately Pi times 10,000,000 seconds in one yearLearn more about conversion of units here:
https://brainly.com/question/599249
2. A business is purchasing t-shirts with their logo on them. Timmy's T-Shirt
Shop charges a $35 set-up fee and $10 per shirt. Shirts-O-Rama charges a $55
set-up fee and $5 per shirt. USE A TABLE to determine how many shirts would
need to be purchased for the total cost to be equal at both stores and what that
total cost would be.
Please help asap! I will gave brainlest!
Answer:
270°
Step-by-step explanation:
Given :-
0° ≤ θ < 360°To Find :-
sinθ = -1Solving :-
We know sin90° = 1Therefore, for it to be negative, it needs to be rotated by 180°⇒ 90° + 180° = 270°The expression 3 x 7 - 4x8+2 is equivalent to which of the following?
A 3* (7 - 4) * (8 + 2)
B (3 x 7) - (4 x 8) + 2
h
C (3 x 7) - 48 + 2)
D 3* (7 - 4) * 8 + 2
21.
Ify= 1+x, find
x
dy.
/
dx
Answer:
A. 2/(1 -x)²
Step-by-step explanation:
The derivative of a ratio is given by the formula ...
d(u/v) = (v·du =u·dv)/v²
Here, we have ...
u = 1+x; du = 1·dx
v = 1 -x; dv = -1·dx
Then ...
[tex]dy=\dfrac{(1-x)(dx)-(1 +x)(-dx)}{(1-x)^2}\\\\\dfrac{dy}{dx}=\dfrac{1-x +1+x}{(1-x)^2}=\boxed{\dfrac{2}{(1-x)^2}}[/tex]
__
Additional comment
The formula used above is a combination of the power rule and the product rule.
d(u^-1) = -du·u^-2 = -du/u² . . . . power ruled(uv) = u·dv +v·du . . . . . . . . product ruleRewrite 3^-7 using a
Answer:
Is the question 'Rewrite 3^-7 using a fraction'
If yes, Then
It can be written as 1/3^7
THIS IS DONE BY USING A LAW i.e., a^-1=1/a^1
A rectangular garden is 9 feet long and 3 feet wide. A second rectangular garden has dimensions that are double the dimensions of the first garden. What is the percent of change in perimeter from the first garden to the second garden?
Answer:77.7778%
9+9+3+3=27
18+18+6+6=48
Step-by-step explanation:
What is the image point of (3, 7) after a translation right 5 units and up 1 unit?
Answer:( 8,8)
Step-by-step explanation:
Spencer can do a piece of work in 20 days and Toby in 25 days. They began to work together.
But Spencer leaves after some days. Toby finish the remaining work in 11 days. After how many
days did Spencer leave?
I believe the answer is that Spencer left after 9 days.
Replace ? with an expression that will make the equation valid.
Answer:
4x³
Step-by-step explanation:
d/dx ln(x⁴ + 7) = 1/(x⁴ + 7) × _?
To obtain the missing expression, let us simplify d/dx ln(x⁴ + 7). This can be obtained as follow:
Let y = ln (x⁴ + 7)
Let u = (x⁴ + 7)
Therefore,
ln(x⁴ + 7) = ln u
Thus,
y = ln u
dy/du = 1/u
Next, we shall determine du/dx. This is illustrated below:
u = (x⁴ + 7)
du/dx = 4x³
Finally, we shall determine dy/dx of ln (x⁴ + 7) as follow:
dy/dx = dy/du × du/dx
dy/du = 1/u
du/dx = 4x³
dy/dx = 1/u × 4x³
But:
u = (x⁴ + 7)
Therefore,
dy/dx = 1/(x⁴ + 7) × 4x³
Thus, the missing expression is 4x³
I need help if you absolutely don’t know please don’t but a random answer down 11:24 a.m est
Answer:
i can go ahead and say that for question 1, the answer is 1,568,000,000,000,000,000,000,000,000,000
estimation is ethier 2,000,000,000,000,000,000,000,000,000 or 1,700,000,000,000,000,000,000,000,000,000
also i'm very sorry if this didn't help you! but i really hope this did help you out a little
Sam is developing a metric to try to measure how generous an individual is. In order to evaluate whether it is actually measuring generosity, Sam is checking to see if there is any correlation between a person's score on the metric and the amount of money they donate to charities or give to others in need. In other words, Sam is evaluating the _____ of the metric.
By checking to see if there is correlation, Sam is evaluating the criterion validity of the metric.
How to determine the measured parameter of the metricFrom the question, we understand that Sam tests the metric to check for the presence or absence of correlation in the metric.
This, in other words means that Sam is checking the criterion validity of the metric.
Hence, the true statement is that Sam is evaluating the criterion validity of the metric.
Read more about correlation at:
https://brainly.com/question/14289293
Which BEST describes the relationship between
the two triangles?
A. The triangles are a reflection of each other and are
congruent by side-side-angle.
B. The triangles are a reflection of each other and are
congruent by side-angle-side.
C. The triangles are a translation of each other and are
congruent by side-side-angle.
D. The triangles are a translation of each other and are
congruent by side-angle-side.
I did it but it didn't have my answer on the list lol
Answer:
B) 1 8/27
Step-by-step explanation:
First, change all mixed fractions into improper fractions:
2 1/3 = 7/3
1 4/5 = 9/5
7/3 ÷ 9/5
Next, flip the second fraction, and change the division sign into multiplication:
7/3 x 5/9
Multiply across:
7/3 x 5/9 = 35/27
Change into a mixed fraction:
35/27 = 27/27 + 8/27
1 8/27 is your answer.
~
The diagram show two congruent polygons joined together
Answer:
10
Step-by-step explanation:
Please help asap! I will gave brainlest!
Answer:
option D.
Step-by-step explanation:
1) cosx=cotx;
[tex]cosx(\frac{1}{sinx} -1)=0;[/tex]
[tex]\left[\begin{array}{ccc}cosx=0\\sinx=1\end{array} \ = > \ \left[\begin{array}{ccc}x=\frac{\pi }{2} +\pi k\\x=\frac{\pi }{2} +2\pi n\end{array}[/tex]
where n,k∈Z;
2) if x∈[0;2π], then x=π/2; 3π/2.
Note, the greek letter 'Θ' is replaced with 'x'.
Answer:
π/2, 3π/2
Step-by-step explanation:
Given :-
0 ≤ θ < 2πTo Solve :-
cosθ = cotθSolving :-
cosθ = cotθcosθ = cosθ/sinθ1 = 1/sinθsinθ = 1θ = π/2, 3π/2The vertices of a rectangle are w. 2). 14, 2). Y14.-3), and 21.-3). Find the perimeter of the
rectangle
Check the picture below.
Please help me find the equation xx
9514 1404 393
Answer:
(2x-10) +x +(x+10) = 180x = 45(2x-10)° = 80°(x+10)° = 55°x° = 45°Step-by-step explanation:
The equation is an expression of the fact that the sum of the angles in a triangle is 180°.
(2x -10)° +x° +(x +10)° = 180°
For the purposes of the answer box, I'd leave off the degree symbol:
(2x -10) +x +(x +10) = 180
__
This simplifies to ...
4x = 180
x = 45
Then the angles (CW from top) are ...
(2·45 -10) = 80°
(45 +10)° = 55°
(45)° = 45°
need help on this math question, by the way the first choice is incorrect, i chose that and got it wrong... thanks
1-25 Cash paid to Hari Rs.12500 in full settlement of his
uired: a. Journal Entries b. Hari Account
Answer:
i dont know please ask to raju landge urfa tapori anna
Here is a number pattern: 23, 26, 30, 35, 41.
What is the next number in the pattern?(please answer)
Answer:
48
Step-by-step explanation:
The number sequence increases by 1.
23+3=26
26+4=30
30+5=35
35+6=41
therefore 41+7=48
Answer:
The next number in the pattern is 48
Step-by-step explanation:
23+3 is 26. 26+3+1 is 30. 30+4+1 is 35. 35+5+1
Hope that helps!
Please help ASAP! It would be greatly appreciated. Thank you.
Answer:
2one
Step-by-step explanation:
What is the probability of flipping a coin 11 times and getting heads 5 times?
Round your answer to the nearest tenth of a percent.
A. 16.1%
B. 8.1%
C. 0.5%
D. 22.6%
Answer: The answer is A. 16.1%
Step-by-step explanation:
Answer:22.6
Step-by-step explanation:
IM GIVING 25 PTS AND BRAINLIESTTTT
Answer:
answer is A. the graph does not cross over the X axis
and to check whether I'm correct.
calculate -(1/3)^0 which equals -1
and also check using 4 as the X value : -(1/3)^4 = - 1/81
ALL THESE ANSWERS ARE NEGATIVE ANSWERS
The average person needs to eat 2000 calories everyday to remain healthy. How many more calories should you eat to remain healthy?
Answer:
This depends on the person, try measuring how many calories you eat in 1 day. By gathering that information you can determine if you are either eating more calories or less
Can someone help me with this please?
4
Step-by-step explanation:
The green line has a slope of because it is parallel with the red line
Lines which are parallel have same slope