Answer:
4
Step-by-step explanation:
2^2 - (2)(-2) - (-2)^2
=4+4-4
=4
2² - (2 × -2) - (-2²)
= 4 - (-4) - 4
= 4 + 4 - 4
= 8 - 4
= 4
test corrections....
Why do scientists use models?
A)
Models are unreliable.
B)
Models waste natural resources.
Models predict not just describe events.
Models are based on scientific laws and principals so they are more
reliable than the real thing.
D)
What is the approximate area of the shaded sector in the circle shown below?
Answer:
C. 297
Step-by-step explanation:
Area= 105/360(pi*18^2)
Area=296.73
The minute hand of a clock in a clock tower has a length of 36 inches.
If a butterfly landed on the extreme tip of the minute hand at exactly 12:00 noon and rode the minute hand until 12:45 p.m., how far did the butterfly ride along the arc traced by the minute hand?
45 i guessStep-by-step explanation:
SOMEONE PLEASE HELP!!!!
Answer: it’s C
T r u s t M e ;)
On Monday Matty worked for 450 minuites in his office on Tuesday he worked half the numbers of minute he worked on Monday on wends day he worked only 1/2 day Wichita was 300 minute how many more minutes did he work on wensday then thursday
Answer:
The answer is 75 minutes.
Explanation :
Wednesday is 300 minutes & Tuesday is 225 minutes because 450 ÷ 2 = 225.
Wednesday is 300 minutes & Tuesday is 225 minutes because 450 ÷ 2 = 225. SO 300 - 225 = 75.
CAN YOU PLS GIVE ME BRAINLIST? THANK YOU! :))
Answer:
He worked for 75 more minutes on Wednesday then on Tuesday.
Step-by-step explanation:
So since we know that Matty worked for 450 minutes in his office on Monday, we can find out for how long he was working on Tuesday since we know that.......
Let "y" be the number of minutes Matty will work on Tuesday
Let "x" be the number of minutes Matty worked on Monday
[tex]y = \frac{x}{2}[/tex]
Substitute the values we have and get......
[tex]y = \frac{450}{2}[/tex]
[tex]y = 225[/tex]
So now we can find out how much more he worked on Wednesday then on Tuesday by doing the following......
Let "w" be the number of minutes Matty worked on Wednesday, then.......
The answer = [tex]w - y[/tex]
The answer = 300 - 225
The answer = 75
2
What is (2 + 0.4 + 0.6)= ?
Answer:
What is (2+0.4+0.6)
First we have to arrange the numbers in sequence...
[tex]2.0 \: + \: 0.4 \: + 0.6 \\ 3.0 \: or \: 3[/tex]
Here I have taken this 0 after the point ..as the rest of the digit are in tenths place or after the point...
The answer is 3.
We will not calculate the 0 as it does not have any value.
Ans) 3
Hope this helps you...Someone please help and please show the work too :(
The sum of two numbers is 15. Twice one number equals 3 times the other. Find the numbers
Answer:
6 and 9
Step-by-step explanation:
x + y =15
2x = 3y Set up system of equations
x = [tex]\frac{3y}{2}[/tex] Solve for x
[tex]\frac{3y}{2}[/tex] + y = 15 Substitute
3y + 2y = 30
y = 6
x = 9
4x - 3y + 9x + (-2) - 10y + 12
what is it simplified or it says simplify *all* expressions
A cheetah's speed was timed overa
100-yard distance. The cheetah was
(PLEASE HELP ME)clocked running 70 miles per hour. Which
equation shows the relationship between
the distance, y, and time, x, the cheetah
runs?
Answer:
y = 70x
Step-by-step explanation:
Note that d = rt where d is the distance, r is the rate/speed, and t is the time. Since we are given that the variable x is the time, 70mph is the speed, and the variable y is the distance, we can substitute these into d = rt, which we get y = 70x.
I hope this helps! :)
From the details in the article, what inference can you make about Katie?
A) Katie is well-meaning but sometimes impractical.
B) Katie is hardworking and generous to others.
C) Katie is friendly but prefers to keep to herself.
D) Katie is free-spirited and love to have a good time.
Answer:
B
Step-by-step explanation:
She was working hard on her garden, and she was generous by donating.
The inference that can you make about Katie :
B) Katie is hardworking and generous to others.
"Gardening"
The inference that can you make about Katie is hardworking and generous to others.
She was working hard on her plant, and she was generous by giving.
Gardening is the laying out and care of a plot of ground given somewhat or entirely to the developing of plants such as blossoms, herbs, or vegetables.
Thus, the correct answer is B.
Learn more about "Kathie":
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Find the slope of the line through each pair of points (-17, 11) , (-12, 9) 
Answer:
M = -2/5
Step-by-step explanation:
To find the slope of a line when you know two points, use the following formula.
M = y₂ - y₁ ÷ x₂ - x₁
M = 9 - 11 ÷ -12 - (-17)
M = -2 ÷ 5
M = -2/5
Hope that helps.
Please help me ASAP!!!!
Answer:
The first one and the last two
Answer:
the first one and the 2 last ones!
9) How much edging is needed to go
around a bulletin board that is 3 feet
high and 2 feet wide?
Answer:
10 feet worth
Step-by-step explanation:
3+3=6
2+2=4
6+4=10
If f(x) = x^3 – 10x^2 + 29x – 30 and f(6) = 0, then find all
of the zeros of f(x) algebraically.
HELP ME, PLEASE. I REALLY NEED IT
Find x:
[tex]S=\frac{1}{sin2x}+\frac{1}{sin4x}+\frac{1}{sin8x}+...+\frac{1}{sin2^{n}x }[/tex]
Answer:
cotx - cot2ⁿxStep-by-step explanation:
Note: finding the sum not xFirst rewrite the first term as:
1/sin2x = sinx / (sinxsin2x) = sin(2x-x) / (sinxsin2x) =(sin2xcosx - cosxsinx) / (sinxsin2x) = (sin2xcosx)/(sinxsin2x) - (cos2xsinx)/(sinxsin2x) = cosx/sinx - cos2x/sin2x = cotx - cot2xNow the sum is:
S = cotx - cot2x + cot2x - cot4x +... + cot2ⁿ⁻²x - cot2ⁿx =cotx - cot2ⁿxplease answer this !!!
Someone please help.
Answer:
3a. 84
3b. 150
Step-by-step explanation:
(3*7)+(3*21)
what is 3*7? it's 21
what is 3*21? it's 63
so 21 + 63 is the answer to the first question :D
10*(8+7)
8+7 first cause it's in parentheses
15
10*15 is equal to 150
Solve the inequality.
8+k≤−3
The solution is
.
Answer: k [tex]\leq[/tex] -11
Step-by-step explanation:
8 + k [tex]\leq[/tex] -3 Subtract 8 from both sides
-8 -8
k [tex]\leq[/tex] -11
The solution to the given inequality 8 + k ≤ -3 is k ≤ -11 which represents all values of k that are less than or equal to -11.
What is inequality?Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.
The given inequality is given in the question:
8 + k ≤ -3
To solve the inequality 8 + k ≤ -3, you can start by subtracting 8 from both sides to isolate the variable:
k ≤ -3 - 8
k ≤ -11
The solution to this inequality is all values of k that are less than or equal to -11. This includes all negative numbers less than or equal to -11, as well as -11 itself.
Therefore, the solution to the given inequality is k ≤ -11.
Learn more about inequalities here:
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12 points
8. Javier worked out the following on his math homework: "What
equation best represents the relationship between x and y in the graph?"
Javier's answer was y= - 4x - 2. Is he correct? If not, explain what he did
wrong AND give the correct answer. (This question will be hand graded) *
1096
2716810
M
What is the area of figure ABCD?
(image of figure down below)
104 square inches
120 square inches
136 square inches
168 square inches
Answer:
a
Step-by-step explanation:
Solve there Systems of equations. Step - by - Step 2x + y = 15
3x - y = 5
Answer:
2x+y=15, 6x+3y=45
3x-y=5, 6x-2y=10
Y=35, plug it in, x=-10
Step-by-step explanation:
what is 1,360/16 reduced to smallest form? (please hurry this assignment is due soon)
Answer:
85/1
Step-by-step explanation:
because both numbers are divisible by 16
Answer:
85
Step-by-step explanation:
1360 and 16 both have 16 in common. So...
1,360 ÷ 16 = 85
16 ÷ 16 = 1
85/1 = 85
The answer is 85.
Becca’s dog walking business started with 1 dog. She walks 2 additional dogs each month.
The graph represents the problem. How many dogs does she walk in the third month?
Answer:
7 is the correct answer
2 each month + 1 that she started of with = 7 I hope this helped.
9(3+c+4) =
Help!!!!!!!!!!
Select "Growth" or "Decay" to classify each function.
Answer:
they all all right
Step-by-step explanation:
growth
decay
growth
The formula C=5/9(F−32) can be used to convert temperature from Celsius (C) to Fahrenheit (F). The highest temperature ever recorded in the United States was 134 ∘F in Death Valley on July 10, 1913. What was the temperature that day in Celsius, rounded to the nearest degree?
Answer:
57 °C.
Step-by-step explanation:
The formula that is used to convert temperature from Celsius (C) to Fahrenheit (F) is given by :
[tex]C=\dfrac{5}{9}(F-32)[/tex] ...(1)
If T = 134° F, we need to convert the temperature in Celsius.
Put F = 134, in equation (1)
[tex]C=\dfrac{5}{9}(134-32)\\\\=\dfrac{5}{9}\times 102\\\\=56.66^{\circ} C\\\\\text{or}\\\\T=57^{\circ} C[/tex]
So, the temperature on that day is 57 °C.
Helpp!!
At Charles School, 1/5 of the 75 students in seventh grade play in the jazz band. how many seventh graders play in the jazz band?
Answer:
15
Explanation
1/5x75=75/5 =15
15 seventh graders play in the jazz band as per the given ratio.
What is the ratio?One quantity can be expressed as a fraction of other quantities using a ratio, which is a number. Only when the two numbers in a ratio have the same unit can they be compared. Ratios are used to compare two objects.
Given At Charles School, 1/5 of the 75 students in seventh-grade play in the jazz band.
In the form of a ratio
1/5 the students out of 75 play in the jazz band
Total students play in the jazz band = 75* 1/5
Total students play in the jazz band = 15
Therefore, The jazz band has 15 seventh graders playing according to the ratio.
Learn more about ratios here:
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change from word form to standard form: five hundred five and fifty thousandths
Anwer: Five hundred five and fifty thousandths in standard form is 505.05
What is the area of this shape?
7 inches
4 inches
5 inches
A. 17.5 square inches
B. 25.5
C.27.5
D. 35.5
E.37.5
Answer:
c because 5×4=20 and 3×5÷2=7.5= 27.5