Answer:
2 (3+1)
Step-by-step explanation:
The 2 is distributed to both the 3 and 1, making the expression equivalent to 6+2. Don't know if this was what was being asked, so it may or may not be right.
pls help asap i need an anwser
Answer:
7.21 units
Step-by-step explanation:
Given points are: (-6, 6) and (-10, 0)
[tex]distance = \sqrt{ {( - 6 + 10)}^{2} + {(6 - 0)}^{2} } \\ \\ = \sqrt{ {(4)}^{2} + {(6)}^{2} } \\ \\ = \sqrt{ 16 + 36 } \\ \\ = \sqrt{ 52 } \\ \\ = 7.21 \: units[/tex]
Which expression is equivalent to (xy^5)^2(3x^4y)^3?
The length of a rectangle is 16 cm less than quadruple the width. If the perimeter is 28 cm,
what is the length and the width?
f(x)=-5x+1x=−5x+1, find f(6)
Answer:
f(x)=-5x+1x=−5x+1, find f(6)
f(6)= -5(6)+1(6)=-5(6)+1
F(6)=-24,-29
The brackets for a shelf are in the shape of a triangle ABC. Find the missing angle of the triangle if the measure of the angles a=33 and b=102
Answer:
45°Step-by-step explanation:
Sum of interior angles of a triangle is 180°.
Find the missing angle:
m∠A + m∠B + m∠C = 180°33° + 102° + m∠C = 180135° + m∠C = 180°m∠C = 180° - 135°m∠C = 45°[tex]\small\bold\green{[Sum \: of \: interior \: angles \: of \: a \: triangle \: is \: 180°]}[/tex]
Lets , Find the missing angle :
↪ m∠A + m∠B + m∠C = 180°
↪ 33° +102° + m² = 180°
↪ 135° + m∠C = 180°
↪ m∠C = 180° - 135°
↪ m∠C = 45°
Please help for brainliest
Step-by-step explanation:
3/4 if the actual length of the shorter segment is 120 ft.
what do I need to multiply 3/4 with to get 1/1 ?
3/4 × x = 1
3 × x = 4
x = 4/3
you feel the aha moment ?
so, when I multiply 120 ft by 4/3 I reverse the "distraction" of showing me only 3/4 of the real thing, and I get the full length of the shorter segment.
120 × 4/3 = 40 × 4 = 160 ft.
and now we know the longer segment is 12 ft longer.
so, it is
160 + 12 = 172 ft long.
so, the equation we just solved was
y = 4/3 × x + 12
with y being the length of long piece, x being the distorted (by factor 3/4) length of the short piece. and 12 is the overall difference between them.
Find the measures of the numbered angles in the kite shown to the right
Answer:
the sum of all angles in triangle is equal to 180°
Step-by-step explanation:
1 = 2 = 3 = 4 = 90° (360° / 4)
9 = 180° - 21° - 90° = 69°
10 = 180° - 59° - 90° = 31°
5 = 59°
6 = 21°
7 = 9 = 69°
8 = 10 = 31°
Swedish researchers investigated the relationship between chocolate consumption and stroke. the researchers gave a questionnaire about eating habits to a randomly selected sample of swedish men. based on the responses to the questionnaire, the men were classified into two groups. group a consisted of the 9,250 men who ate the most chocolate per week, and group b consisted of the 9,250 men who ate the least chocolate per week. the researchers tracked the men's health for ten years. during that time, there were 458 cases of stroke among the men in group a and 543 cases of stroke among the men in group
A. Do the data provide convincing statistical evidence that Swedish men who would be classified into group A have a lower probability of stroke than Swedish men who would be classified into group B?
B. A report in a newspaper concluded that Swedish men can reduce their probability of stroke by eating more chocolate. Based on the description of the investigation was the conclusion appropriate? Justify your answer
Using the z-distribution, as we are working with a proportion, it is found that:
A. Yes, the data provides convincing statistical evidence that Swedish men who would be classified into group A have a lower probability of stroke than Swedish men who would be classified into group B.
B. Considering that the data provides statistical evidence, the conclusion was appropriate.
What are the hypothesis tested?At the null hypothesis, it is tested if the proportions are the same, that is:
[tex]H_0: p_A - p_B = 0[/tex]
At the alternative hypothesis, it is tested proportion A is less than proportion B, that is:
[tex]H_1: p_A - p_B < 0[/tex]
What is the mean and the standard error for the distribution of difference of proportions?For each sample, they are given by:
[tex]p_A = \frac{458}{9250} = 0.0495, s_A = \sqrt{\frac{0.0495(0.9505)}{9250}} = 0.0023[/tex]
[tex]p_B = \frac{543}{9250} = 0.0587, s_B = \sqrt{\frac{0.0587(0.9413)}{9250}} = 0.0024[/tex]
Hence, for the distribution of differences, we have that:
[tex]\overline{p} = p_A - p_B = 0.0495 - 0.0587 = -0.0092[/tex]
[tex]s = \sqrt{s_A^2 + s_B^2} = \sqrt{0.0023^2 + 0.0024^2} = 0.0033[/tex]
What is the test statistic?It is given by:
[tex]z = \frac{\overline{p} - p}{s}[/tex]
In which p = 0 is the value tested at the null hypothesis.
Hence:
[tex]z = \frac{\overline{p} - p}{s}[/tex]
[tex]z = \frac{-0.0092 - 0}{0.0033}[/tex]
[tex]z = -2.77[/tex]
Item a:
Considering a left-tailed test, as we are testing if the proportion is less than a value, with the standard significance level of 0.05, the critical value is of [tex]z^{\ast} = -1.645[/tex].
Since the test statistic is less than the critical value, it is found that yes, the data provides convincing statistical evidence that Swedish men who would be classified into group A have a lower probability of stroke than Swedish men who would be classified into group B.
Item b:
Considering that the data provides statistical evidence, the conclusion was appropriate.
More can be learned about the z-distribution at https://brainly.com/question/26454209
Given a = 7.6, A = 50 degrees, and b = 4.3, use the Law of Sines to solve for B. Round
your answer to the nearest degree, and enter the number only. Note: The figure is
not drawn to scale.
Answer:
we need the figure, where is it
How many weeks are in 1200 hours?
Enter your answer as a mixed number in simplest form in the box.
Please hurry! TEN COINS!!!
Answer:
7 1/7
Step-by-step explanation:
24 hours = 1 day
7 days = 1 week
⇒ number of hours in 1 week = 24 x 7 = 168
⇒ number of weeks in 1200 hrs = 1200 ÷ 168 = 7 1/7
Find the value of x.
PLEASE HELP ME!!!!!!
Answer:
34 degrees
Step-by-step explanation:
sin(x) = opp/hyp = 9/16
So, x = 34.22 degrees
After rounding to the nearest degree, x = 34 degrees
Need help on this I don't get it
Step-by-step explanation:
It is not a solution because the point falls outside the shaded region, if you were to plugin the point it would return a false statement
three cats and four dogs cost $145. at the same store, four cats and three dogs cost $135. Assuming each cat is the same price and each dog is the same price, what is the price, what is the price of 1 cat? what is the price of one dog?
Answer:
cat's price = $15
dog's price = $25
Y'all know the drill (classify each triangle. Write acute, right, or obtuse) look at pic
Answer:
It is Right angle triangle.
Also it shows 90 degree angle at E.
I think it will help you.
find the value of the variables, giving brief reasons for your answer:
Answer:
a = 70°
b = 80°
Step-by-step explanation:
Angles on a straight line add up to 180°
⇒ a + 110 = 180
⇒ a = 180 - 110
⇒ a = 70°
The sum of the interior angles of a quadrilateral is 360°
⇒ a + b + 130 + 80 = 360
⇒ 70 + b + 130 + 80 = 360
⇒ b + 280 = 360
⇒ b = 360 - 280
⇒ b = 80°
If 2tanB+cotB=tanA,then proved that 2tan(A-B)=cotB
Answer:
it is so hard it's optional math bro I tried much
Step-by-step explanation:
hope others can give answers
I need some help with this monomial....
15a^16b^11/(3a^4b^2)^3
Answer:
[tex]\frac{5a^4b^5}{9}[/tex]
Step-by-step explanation:
[tex]\frac{15a^1^6b^1^1}{(3a^4b^2)^3}[/tex]
[tex]=\frac{15a^1^6b^1^1}{27a^1^2b^6}[/tex]
[tex]=\frac{15a^4b^5}{27}[/tex]
[tex]=\frac{5a^4b^5}{9}[/tex]
Answer = [tex]=\frac{5a^4b^5}{9}[/tex]
complete the calculation so that each shows the correct sum 1.036 +blank =4
Answer:
-2.964
Step-by-step explanation:
What is an equation that represents the linear
function described by the data in Item 5?
Please help:((
The equation that represents the linear function is y = 2x.
Linear equationA linear equation is in the form:
y = mx + b
Where y, x are variables, m is the rate of change and b is the y intercept.
Let us assume that from the table, we get the data with points (0, 0) and (2, 4). Hence:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-0=\frac{4-0}{2-0} (x-0)\\\\y=2x[/tex]
The equation that represents the linear function is y = 2x.
Find out more on Linear equation at: https://brainly.com/question/13763238
Answer:
Step-by-step explanation:
answer is -10
The speed of a passenger train that is traveling at an initial speed of 14 feet per second and continues to accelerate can be modeled by the function y = 14t2. A second train that is 1,400 feet ahead of the first train is traveling at a constant speed of 96 feet per second and can be modeled by the function y = 96t + 1400. Solve the system of equations. Which solution represents a viable time that the trains are side by side?
Taking into account the definition of a system of linear equations, the solution t=14 represents a viable time that the trains are side by side.
System of linear equationsA system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.
Solving a system of equations consists of finding the value of each unknown so that all the equations of the system are satisfied. That is to say, the values of the unknowns must be sought, with which when replacing, they must give the solution proposed in both equations.
Calculation of time in this caseThe system of equations to be solved is
[tex]\left \{ {{y=14t^{2} } \atop {y=96t+1400}} \right.[/tex]
There are several methods to solve a system of equations, it is decided to solve it using the substitution method, which consists of clearing one of the two variables in one of the equations of the system and substituting its value in the other equation.
In this case, substituting the first equation in the second you get:
14t²= 96t +1400
Solving:
14t²- 96t -1400= 0
Being this a quadratic function of the form ax² + by +c, then it can be solved by: [tex]x1,x2=\frac{-b+-\sqrt{b^{2} -4ac} }{2a}[/tex]
In this case, being a=14, b=-96 and c=-1400, the equation is solved by:
[tex]t1=\frac{-(-96)+\sqrt{(-96)^{2} -4x14x(-1400)} }{2x14}[/tex]
[tex]t1=\frac{96+\sqrt{9216 +78400} }{28}[/tex]
[tex]t1=\frac{96+\sqrt{87616} }{28}[/tex]
[tex]t1=\frac{96+296}{28}[/tex]
[tex]t1=\frac{392}{28}[/tex]
t1=14
and
[tex]t2=\frac{-(-96)-\sqrt{(-96)^{2} -4x14x(-1400)} }{2x14}[/tex]
[tex]t2=\frac{96-\sqrt{9216 +78400} }{28}[/tex]
[tex]t2=\frac{96-\sqrt{87616} }{28}[/tex]
[tex]t2=\frac{96-296}{28}[/tex]
[tex]t2=\frac{-200}{28}[/tex]
t2= -7.14
Since time cannot be a negative value, the solution t=14 represents a viable time that the trains are side by side.
Learn more about system of equations:
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expand the expression below to find the values of capatilised pronumerals
PLS HELP :))
»(4x - 2y)(3x + 5y)
»4x(3x + 5y) + (-2y)(3x + 5y)
»12x² + 15xy - 6xy - 10y²
»12x² + 9xy - 10y²
so, ABC is :
A = 12✅B = 9✅C = -10✅Angel bought a piece of artwork that had a value of V dollars.
Over a period of five years the artwork increased in value by 40%.
Which expression represents the current value of the artwork?
A 1.4V
B 0.4v
C v+1.6v
D 1+0.4v
Using proportions, it is found that the expression that represents the current value of the artwork is given by:
A 1.4V
What is a proportion?A proportion is a fraction of a total amount.
In this problem, the initial value was of V, which increased by 40%. Thus, the current value of V is 100% + 40% = 140% of the original, which is equivalent to a proportion of 1.4, that is: 1.4V.
Hence, option A represents the current value of the artwork.
More can be learned about proportions at https://brainly.com/question/24372153
Please help meeeee!!
Answer:
A parallelogram is a four sided shape, so this means that the total sum of interior angles is equal to 360 degrees.
It also has two sets of matching angles, therfore if it says one is 155 degrees it must have one more that is also 155 degrees.
This means 2 x 155= 310, 360 - 310 = 50 degrees remaining. This 50 degrees would be shared between the remaining two angles as they must be a matching pair also. 50 / 2=25.
This parallelogram has two angles of 155 and two of 25. Degrees.
Hey Inneeed helpppppppppp
Answer:
1 x 1/2 = 1/2
1/2 x 1/2 = 1/4
1/2 x 1/2 = 1/4
Step-by-step explanation:
938 divided by 7, pls give the solution too
Answer:
134
Step-by-step explanation:
938÷7=134
-2/5 divided by -2/3?
Answer:
-3/5
Step-by-step explanation:
I used the KCF, or keep, change, flip, method for this.
The original problem is -2/5 divided by -2/3
We keep the first fraction - -2/5
change the sign to multiplication
and flip the second fraction - 3/2
so, -2/5 x 3/2
and then check for where we can simplify, we can in this instance:
-1/5 x 3/1
and then multiply across
-3/5
Each day the polar bear at Monroe's zoo eats 1/4 of a bucket of trout and 3/8 of a bucket of salmon how many buckets of fish does the polar bear eat daily
Answer:
5/8
Step-by-step explanation:
1/4=2/8
2/8+3/8=5/8
To decrease your household water usage by 10% a month means that a household using 4000 gallons of water a month would cut down to using
A blank gallons a month.
Olivia is making scarves. Each scarf will have 3 rectangles, and
2/3
of the rectangles will be purple.
How many purple rectangles does she need for 2 scarves?
Olivia needs
purple rectangles.
What is the quotient (2x2 + 10x + 12) ÷ (x + 3)?
Answer:
2x+4 or 2(x+2)
Step-by-step explanation:
I'm not very confident that I can give you a clear explanation while typing, but you can factor the equation which is one way how to do this.
2x^2 + 10x+12 = 2(x^2+5x+6)
= 2(x(x+3) + 2(x+3))
= 2(x+3)(x+2)
With that answer, you divide it by x+3 and get 2(x+2) or 2x+4