Simplify
2x² + (4x – 6x²) + 9 – (6x + 3)
Answer: -4x²-2x+6
Step-by-step explanation:
2x²+(4x-6x²)+9-(6x+3)
2x²+4x-6x²+9-6x-3
2x²-6x²+4x-6x+9-3
-4x²-2x+6
Answer:
=-4x^2-2x+6
Step-by-step explanation:
A food scientist takes a random sample of 25 cereals in order to test the claim that the mean fiber content is less than 2.5 grams. The graphs of the data and two types of hypothesis test output are provided below. Determine which output should be used and state the conclusion of this test at the 5% significance level.
Answer:
Choice A: there is insufficient evidence to conclude that the mean for the fiber content is less than 2.5 gms.
Step-by-step explanation:
From the graphs given the more appropriate is one sample t- test
One sample t- test is used and the results are
Hypothesis Test Fiber
Sample Mean 2.62
Sample St. Dev 3.492
Degrees of Freedom 24
t- test statistic 0.1718
p- value 0.5675
the critical region for this test at ∝= 0.05 is t < -1.711
There is not enough evidence to reject the null hypothesis.
Since the calculated t= 0.1718 does not fall in the critical region the null hypothesis is accepted that the mean fiber content is not less than 2.5 grams.T
Tuesday
Describe the shape resulting from the cross section of the
roll of cookie dough.
someone pls help, i will give brainliest
Answer:
∠DOB= 48°Step-by-step explanation:
→ Angle = 180
→ [tex]n^o+108^o+2n^o=180^o[/tex]
→ [tex]3n^o+108^o=180[/tex]
→ [tex]3n^o=72^o[/tex]
→ [tex]n=72^o/3[/tex]
→ [tex]n=24[/tex]
∠DOB= 2n = 2× 24°
∠DOB= 48°
[tex]-----------[/tex]
hope it helps...
have a great day!!
Which angle is supplementary to CFD?
Answer:
∠DFA or can be written as AFD : ( as long as the vertex F is in the middle)
Step-by-step explanation:
Supplementary angles are angles when added together form a straight line (180°)
CFD makes a small part of that straight line and DFA (AFD) make up the other part
Given: Circle k(O) with OT ⊥ XY, and OU ⊥ WZ and X=Z. Prove: XY=WZ
Doug bought a new car for $25,000. He estimates his car will depreciate, or lose value, at a rate of 20% per year. The value of his car is modeled by the equation V = P(1 – r)t, where V is the value of the car, P is the price he paid, r is the annual rate of depreciation, and t is the number of years he has owned the car. According to the model, what will be the approximate value of his car after 4 and one-half years?
9514 1404 393
Answer:
$9,159
Step-by-step explanation:
Put the given numbers into the formula and do the arithmetic.
V = $25,000(1 -0.20)^4.5 ≈ $9,159
The value of the car will be about $9,159 after 4 1/2 years.
Answer:
b
Step-by-step explanation:
edge 2021
a classroom board is 30 inches wide and 20 inches tall. scott is putting ribbon along the outside edge of the board. how many inches will he need?
Answer: 100 inches
Step-by-step explanation: *warning* this is the way I do it. This might not be the best or easiest way, but it is an answer
30 inches wide
20 inches tall
30+30+20+20 = 100
you could also do 30*2 + 20*2
ANSWER QUICK IF POSSIBLE - I GIVE BRAINLYEST
Problem: Construct a triangle with side lengths 6, 6, and 6.
What are the angle measures for the triangle?
A. 45, 45, 90.
B. 60, 60, 60.
C. 10, 80, 90.
Which angle is supplementary to CFD?
Answer:
fab
Step-by-step explanation:
Find the area of this
irregular figure.
9 ft
[ ? ] square feet
8 ft
15 ft
26 ft
Answer:
426 ft^2.
Step-by-step explanation:
It area = area of the rectangle + area of the triangle
= 15 * 26 + 1/2 * 8 * 9
= 390 + 1/2*8*9
= 390 + 36
= 426 ft^2.
The area of the figure given is 426 ft^2.
How to find the surface area of some object?Find the area that its outer surfaces possess. Sum of all those surfaces' area is the surface area of the considered object.
Supposing that there is no direct formula available for deriving the area, we can derive the area of that region by dividing it into smaller pieces, whose area can be known directly.
Area = Area of the rectangle + Area of the triangle
Area = 15 * 26 + 1/2 * 8 * 9
Area = 390 + 1/2*8*9
Area = 390 + 36
Area = 426 ft^2.
Therefore, the area of the figure given is 426 ft^2.
Learn more about surface area here:
https://brainly.com/question/15096475
#SPJ5
5 The regular price of a kite is $9.60. Today it is on sale at 1/3 off the regular price. What is the sale price of the kite? $
Answer:
its 6.40
Step-by-step explanation:
Which expression is equivalent to the one below?
12 - 11
O A. 12.1
O
O B. 11 0 1 / 2
O C. 132
O D. 11
12
Answer:
Hello! answer: A. 12 × 1/11
Answer:
A
Step-by-step explanation:
Name the kind or kinds of symmetry the following figure has: point, line, plane, or none. (Select all that apply.)
3
point
line
plane
none
Answer:
100% sure but im going with 3 lines
Step-by-step explanation:
PLS HELPP
1.how many edges does it have?
2. how many vertices does it have?
Answer:
1. 8 edges
2. 8 vertices
Step-by-step explanation:
Answer:
the 3D image is a cuboid so no.of edges are 12 and no.of vertices are 8..
edges are the line segments and vertices are the corners...
Write the equation of the circle graphed below.
Answer:
(x + 2)² + (y + 2)² = 0.75²
Step-by-step explanation:
Standard form
(x - h)² + (y - k)² = r²
the center is (h, k) = (-2, -2)
the radius is r = 0.75
(x + 2)² + (y + 2)² = 0.75²
Answer:
(x + 2)^2 + (y + 2)^2 = 0.5625
Step-by-step explanation:
By looking at the graph, we can see the center of the circle is (-2, -2) and by counting the squares, the radius is 0.75.
The standard form of a circle equation is:
(x - h)^2 + (y - k)^2 = r^2
where (h, k) is the center and r is the radius.
We can substitute our values in to get:
(x + 2)^2 + (y + 2)^2 = 0.5625
The model represents an inequality. What is the solution set for this inequality? 4x+12≤-8
Answer:
4x+12<-8
4×<-8-12
4×<-20
×>-5
List all possible rational zeros for the following polynomial:
f(x) = x4 + 7x3 - 5x2 + 2x - 12
Answer:
a
Step-by-step explanation:
I got the answer using Math. ....way
44 points for answer
Answer:
30 m vertically and 10 horizontally for a rectangle in a corner of the warehouse.
What's is 25/6 as an mixed number
Answer:
4 1/6
Step-by-step explanation:
6 goes into 25 4 times with one leftover converting to the extra 1/6th
Answer:
4 R 1
Step-by-step explanation:
Helppppppppppppppppppppppppppppppppppppp
Solve for x
7 x + 3 = 17
X= 2
x = 7
x = 20
x = 27
Answer:
27
Step-by-step explanation:
Answer:
x=2
Step-by-step explanation:
7x + 3 = 17
7x = 17 - 3
7x = 14
7x ÷ 7 = 14 ÷ 7
x = 2
Please help me, no random answers or links, please.
Answer: -3
Step-by-step explanation:
To find the gradient...
Take any two points on the line and use the gradient fromula...
y2 - y1/ x2 - x1
Using points (0, 4) and (1,1):
1-4 / 1-0 = -3/1
Graident/slope = -3
Answer:
Step-by-step explanation:
(0, 4) (1, 1)
(1 - 4)/(1 - 0) = -3/1= -3
-3 is the slope
HELP PLEASE GOD HELP
Answer:
x=2, x=-8 : 2 will be taken as the answer as negative is discarded so C is the answer
Step-by-step explanation:
Apply Log Rules:
x(x+6)=16
Solve:
x=2, x=-8
Josh filled his gas tank three times last week. Here are the amounts of gas he bought (in gallons).
7,9.84, 13.9
What is the total amount of gas Josh bought last week
Please answer!!!!!!
40 points
Answer: 2, 4, and 5
Step-by-step explanation:
IQR is the third quartile minus the first quartile. The median is the middle number. The range is the biggest number minus the smallest. Hope this helps.
Answer:
it is measured with a ruler
I need the answer fast
Answer:
300ft
Step-by-step explanation:
did the math .....
Help me pls thanks so much
Answer:
D) 49.1 in²
Step-by-step explanation:
area of entire cake = πr² = (3.14)(5²) = 78.5 in²
area of 5 slices = (78.5)(5/8) = 49.1 in²
a 440m long road is being repaired at the end of 3 days the workers had repaired 3/4 of the road what length of the road is left unrepaired
THE ANSWER IS 110 m
Workers had repaired 3/4 of the road
it means3/4×440 is been repaired
length of repaired road is 3×110 = 330m
length of unrepaired road = Length of to road - length of repaired road
i.e. = 440-330 = 110m
Jennifer age 18 initially invested $1000 at 8% interest how old would she be when the account is $128,000
Answer:
2,304 years old
Step-by-step explanation:
Given: Jennifer age = 18, Invested = $1000 at 8% interest
To find: How old would she be when the account is $128,000?
Wrong solution
Solution: To figure out how old she will be when her account is $128,000, simply find the difference between her current account value by her current age, by dividing. Then multiply the result by the future account value.
Step 1: [tex]\frac{1000}{18} = 55.5555555556[/tex]
Rounding, that is; 55.56
Step 2: Now, multiply the result by the future account value.
[tex]55.56[/tex] × [tex]128000 = 7111680[/tex]
Correct solution
Solution: To find out how old she will be when her account is $128,000, set up a fraction;
[tex]\frac{1000}{8} = \frac{12800}{x}[/tex]
Step 1: Divide the numbers
[tex]\frac{1000}{8} = \frac{128000}{x} \\\\\frac{500}{9} = \frac{128000}{x}[/tex]
Step 2: Multiply all terms by the same value to eliminate fraction denominators
[tex]\frac{500}{9} = \frac{128000}{x} \\\\x * \frac{500}{9} = x * \frac{128000}{x}[/tex]
Step 3: Cancel multiplied terms that are in the denominator
[tex]x *\frac{500}{9} = x * \frac{128000}{x} \\\\x * \frac{500}{9} = 128000[/tex]
Step 4: Re-order terms so constants are on the left
[tex]x * \frac{500}{9} = 128000\\\\\frac{500}{9} x= 128000[/tex]
Step 5: Combine multiplied terms into a single fraction
[tex]\frac{500}{9} x = 128000\\\\\frac{500x}{9} = 128000[/tex]
Step 6: Multiply all terms by the same value to eliminate fraction denominators
[tex]\frac{500x}{9} = 128000\\\\9 * \frac{500x}{9} = 9 * 128000[/tex]
Step 7: Cancel multiplied terms that are in the denominator
[tex]9 * \frac{500x}{9} = 9 * 128000\\500