Answers
Answer:
x=4
Step-by-step explanation:
By SAS we know that
[tex]\triangle ABE \sim \triangle ADC[/tex]
by a ratio of
[tex]1:2[/tex]
so we have
[tex]\frac{BE}{DC}=\frac{1}{2}\\\\2BE=DC\\\\2(x+2)=12\\\\2x+4=12\\\\2x=12-4\\\\2x=8\\\\x=4[/tex]
Related Questions
(b) Mrs. Young calculates that 5 nights will cost $1350. What is the percent error in Mrs. Young’s calculation? Round to the nearest percent. Show your work
Answers
Answer:
5 x 13,50= 6,750
Step-by-step explanation:
5,400 is the answer of the persentage. I subtracted 6,750 from 1350 and got 6,750
Cost of 1 night:-
[tex]\\ \sf\longmapsto \dfrac{1350}{5}[/tex]
[tex]\\ \sf\longmapsto \dfrac{270}{1}[/tex]
[tex]\\ \sf\longmapsto 270[/tex]
An accident in a laboratory results in a room being contaminated by a radioisotope with a half-life of 8 days. If the radiation is measured to be eight times the maximum permissible level, how much time must elapse before the room is safe to enter?
Answers
Answer:
24 days
Step-by-step explanation:
Let the permissible time be Ro
Let the initial activity be R= 8Ro
From;
0.693/t1/2 × t= 2.303 log R/Ro
Half life of the radionuclide= t1/2 = 8 days.
Hence;
0.693/8 × t = 2.303 log 8
t= 2.1/0.087
t= 24 days
. Ruiz wants to buy a coffee machine that costs
$45.00. How much would the cashier give Ruiz if she
gives the cashier a $100 bill?
Answers
Ruiz would get back 55 dollars 0 cents
8
7
6+
5
4 3
N
1
-8 -7 -6 -5 4ß -2
-1
1
2 3 4 5 6 7 8
-2
-3
-5
-6
-7
-8+
The system of equations has
O one solution
no solution
infinitely many solutions
Answers
Answer:
no bro
Step-by-step explanation:
no
A foreign country uses the stellar as its currency. Before a trip to that country, wants to exchange $ to stellars. Which of Bank A and Bank B has the better exchange rate? How many more stellars would get if exchanged h $ at the better exchange rate instead of at the other rate?
Answers
Stellar is a Brazilian cryptocurrency that is used to facilitate low cost and flexible payment. It was renamed lumens and is denoted XLM.
One stellar lumen is currently equal to $0.219096
For the purpose of the question and since it does not specify exchange rates for each bank, let's assume:
Bank A= 0.219097 to 1 US dollar
Bank B= 0.219099 to 1 US dollar
Using Bank A to exchange $1700 for stellars= $1700*0.219097= 372.464 stellars
Using Bank B to exchange $1700 for stellars= $1700*0.229042= 389.3714 stellars
From the above, we can see that Bank B has a better exchange rate as it is cheaper than Bank A(gives more stellar) . She should therefore use Bank B for her exchange.
The equation 22j + 8s = 150 is used to determine the number of jeans j and the number of shirts s that can be bought for $150. You purchase 5 pairs of
jeans. Select all the steps that may be used when solving for the number of shirts purchased
A Add 22 to both sides.
B. Subtract 22; from both sides.
C. Substitute 5 for j in the equation
D. Multiply both sides by 8
E Divide both sides by 8.
Answers
Answer:
C. Substitute 5 for j in the equation
Step-by-step explanation:
22(5)+8s =150
110+8s=150
8s = 40
s=5
or
110+8s=150
How many cups are in 6.5 pints?
Answers
Answer:
13
Step-by-step explanation:
Answer:
13 cups
Step-by-step explanation:
2 cups = 1 pint
6.5 x 2 = 13
Reduce 13/2+1 3/4+ 2 5/6=
Answers
Answer:
[tex]\frac{35}{3}[/tex] or [tex]11 \frac{2}{3}[/tex]
Step-by-step explanation:
Just add them
helppppppppp:)))))))))))
Answers
Answer:
bottom one
Step-by-step explanation:
9a-b-2a-10b add like terms
7a-11b
9a-2a=7a
-10b-b=-11b
When you put both answers into an equation you will get: 7a-11b which means your answer is D. Hope this helps!
Please give brainliest❤️
what is the slope of y=45x
Answers
Answer:
45/1
Step-by-step explanation:
45x is the rate at which the line goes up
25 35 47
17 5 61
11 72 ??
Answers
Answer:
There is no pattern to it.
Step-by-step explanation:
divide 8a⁸-20a⁶+2a⁴/4a⁴
Answers
-20a with reminder of 6 and Plus 17a with reminder of 2 over 2
solve the inequality -24<-4m
Answers
Answer:
m > 6
Step-by-step explanation:
[tex] - 4m > - 24[/tex]
[tex] = > \frac{ - 4m}{ - 4} > \frac{ - 24}{ - 4} [/tex]
[tex] = > m > 6[/tex]
Which graph represents the function y = 2/3x-2
Answers
Answer:
C
Step-by-step explanation:
so the y-int is where the point is on the y-axis (0,X). Or, in this situation-2.
for slope, you just need to do rise over run, or up and down first then, left and right. If I do that for C, I go 2 up and 3 right. So the slope os 2/3 (P.S. up and right is positive, and down and left is negative)
The area of a rectangular wall of a barn is 144 square feet. Its length is 10 feet longer than the width. Find the length and width of the wall of the barn.
The width is __feet.
Answers
Answer:
8 feet
Step-by-step explanation:
Let l and w be length and width, respectively. Then:
lw=144 and
l=w+10
So:
w(w+10)=144
w²+10w-144=0
(w+18)(w-8)=0
w=8 as the width ................
The width of the rectangular wall is 8 feet.
What is an area?The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the rectangle in a two-dimensional plane is called the area of the rectangle.
Let l and w be length and width, respectively. Then:
l x w=144
l = w + 10
The area will be given as;-
w(w+10)=144
w²+10w-144=0
(w+18)(w-8)=0
w = 8 and -18 ignore -18.
Therefore the width of the rectangular wall is 8 feet.
To know more about an area follow
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The odds in favor of Frank McKinnis winning a hot dog eating contest are 3:8.
a. Determine the probability that Frank will win the contest.
b. Determine the probability that Frank will not win the contest.
a. The probability that Frank will win the contest is
b. The probability that Frank will not win the contest is
Answers
Answer:
a. 37.5% chance of winning
b. 5/8 or 62.5% chance of losing
Step-by-step explanation:
a. 37.5% chance of winning
b. 5/8 or 62.5% chance of losing
Evaluate -3x^3 - 4x for x=-1.
Answers
Answer:
-x.(3x^2+4)
Step-by-step explanation:
Brain-list?
Answer:
-3(-1)^3-4(-1)= 27+4=31
Step-by-step explanation:-3 and -1 when you multiply both minus will change into plus. same for -4 and -1 when you multiply will change the signs. so you will get 27+4=31
claudia earns overtime pay when she works more then 40 hours in a week how many hours of overtime pay did she work for the week of march 4
Answers
Use the given numbers.
146,406
364,640
344,636
Part A
Which number has one digit that represents ten times the value of the digit to its right?
Enter your answer in the box.
Answers
Answer:
on the third number it says 344,636 and there is a double 4
Kate Sanders, a researcher in the department of biology at PFW University, studied the effect of agricultural contaminants on the stream fish population in northeastern Indiana (April 2012). Specially designed traps collected samples of fish at each of four stream locations. A research question was: did the differences in agricultural contaminants found at the four locations alter the proportion of the fish population by gender
Answers
Full question attached
Answer and explanation:
Null hypothesis : all population proportions are equal, p1=p2=p3=p4
Alternative hypothesis : Not all population proportions are equal
To find our p-value using chi Square method, we first find expected frequencies from observed frequencies above
Expected Frequencies:
Gender A. B. C. D
Male. 46.81 46.81 44.21 43.17
Female 43.19. 43.19 40.79 39.83
Total = 348
chi Square for table = (observed frequency - expected frequency)²/expected frequency
Gender. A. B. C. D
Male. 0.10 0.17 0.52 0.40
Female 0.11 0.18 0.56 0.44
x²= 2.49
Degrees of freedom(df)= k – 1 = (4 – 1) = 3
Using the chi Square table with degree of freedom = 3, 2 and x²= 2.49 shows, the p –value = 0.4771 therefore we do not reject null hypothesis since p value is greater than significance level 0.08
We do not reject the null hypothesis
b. There is no evidence of differences in proportion
- Jennifer opened a new savings account on Thursday with a deposit of $60. - She made a withdrawal of $40 on Friday. - She then made a deposit of $80 on Saturday. Which expression represents her new account balance?
Answers
Answer:
(60-40)+80
Step-by-step explanation:
If isosceles triangle ABC has a 130° angle at vertex B, which statement must be true?
OmZA = 15° and mZC = 35°
mZA = 25° and mZC = 25°
OmZA = 20° and mZC = 30°
OmZA + m ZB = 155° and mZC = 60°
Answers
Answer:
m∠A = 25° and m∠C = 25°
Step-by-step explanation:
The sum of all three angles in a triangle must add up to 180°. Since the measure of angle B is 130°, the sum of the other two angles have to be 50°.
Also, the triangle is isosceles, meaning two of the sides are equal in length. For those sides, their corresponding angles must also be equivalent. In this case, it's the two smaller angles. Since we have 50° between the two angles, A and C, divide 50 by 2 to get 25° for both angle measurements.
The statement that must be true is m ∠A = 25° and m ∠C = 25°. The correct option is the second option m ∠A = 25° and m ∠C = 25°
GeometryFrom the question, we are to determine which of the statements must be true
From the given information,
m ∠B = 130°
Since the triangle is an isosceles triangle, the base angles must be equal
That is,
m ∠A = m ∠C
But, angles in a triangle sum up to 180°
Then,
∠A + ∠B + ∠C = 180°
This becomes
2 × ∠A + 130° = 180°
2 × ∠A = 180° - 130°
2 × ∠A = 50°
∠A = 50° ÷ 2
∠A = 25°
Since ∠A = ∠C
Therefore,
∠C = 25°
Hence, the statement that must be true is m ∠A = 25° and m ∠C = 25°. The correct option is the second option m ∠A = 25° and m ∠C = 25°
Learn more on Geometry here: https://brainly.com/question/14440001
solve for x,y and z, show your work
2x+y 2=-3
y+z=2
-y +z =12
Answers
what was josquin des prez 3 favorite pieces?
Answers
Answer:
While in Ferrara, Josquin wrote some of his most famous compositions, including the austere, Savonarola-influenced Miserere, which became one of the most widely distributed motets of the 16th century; the utterly contrasting, virtuoso motet Virgo salutiferi; and possibly the Missa Hercules Dux Ferrariae, which is ...
Step-by-step explanation:
23 x 3 =
57 + 12 =
47 + 22 =
Answers
100+10-8+60-80+700+20-150
Answers
Final Answer: 652
Steps/Explanations/Reasons:
Question: 100 + 10 - 8 + 60 - 80 + 700 + 20 - 150
Step 1: Simplify [tex]100 + 10[/tex] to [tex]110[/tex].
[tex]110 - 8 + 60 - 80 700 + 20 - 150[/tex]
Step 2: Simplify [tex]110 - 8[/tex] to [tex]102[/tex].
[tex]102 + 60 - 80 + 700 + 20 - 150[/tex]
Step 3: Simplify [tex]102 + 60[/tex] to [tex]162[/tex].
[tex]162 - 80 + 700 + 20 - 150[/tex]
Step 4: Simplify [tex]162 - 80[/tex] to [tex]82[/tex].
[tex]82 + 700 + 20 - 150[/tex]
Step 5: Simplify [tex]82 + 700[/tex] to [tex]782[/tex].
[tex]782 + 20 - 150[/tex]
Step 6: Simplify [tex]782 + 20[/tex] to [tex]802[/tex].
[tex]802 - 150[/tex]
Step 7: Simplify.
[tex]652[/tex]
~I hope I helped you :)~
Solve each equation. Check your solution.
4t - 2 = 14
Answers
Answer:
t=4
Step-by-step explanation:
4t-2=14
You then add 2 to both sides and get
4t=16
Then you must divide 16 by 4 and get
t=4
The solution of the linear equation 4t - 2 = 14 will be 4.
What is the solution to the equation?In other words, the collection of all feasible values for the parameters that satisfy the specified mathematical equation is the convenient storage of the bunch of equations.
The equation is given below.
4t - 2 = 14
The degree of the equation is one, so the equation will be a linear equation. Then solve the equation for 't', then we have
4t - 2 = 14
4t = 16
t = 16 / 4
t = 4
The solution of the linear equation 4t - 2 = 14 will be 4.
More about the solution of the equation link is given below.
https://brainly.com/question/22613204
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Select the correct answer from each drop-down menu. Max used these steps to find the inverse of function f. 5 Step 1 given 5 Step 2 y = change f(x) to y 5 Step 3 1 = 64 6 switch x and y 5 Step 4 + 6y 1 add 6 to each side Step 5 + + 5 36 5 multiply each side by 6 y 6x + = 1-1 (3) Step 6 replace y with 1-1(4) Use this information to complete the statement. Max made a mistake in y he should have
Answers
Answer:
Step-by-step explanation:
Can someone answer please
Answers
Answer:
9
Step-by-step explanation:
thank me later :)
100 POINTS AND BRAINLIST
Does anyone know how to do Polygons on the Coordinate Plane
I need your email
Answers
Answer:
You can use the coordinates of a figure to find its dimensions by finding the distance between two points. To find the distance between two points with the same x-coordinates, subtract their y-coordinates. To find the distance between two points with the same y-coordinates, subtract their x-coordinates.
Step-by-step explanation:
