Answer:
80 cc.
Step-by-step explanation:
We work in amounts of salt in the solutions:
0.09x + 0.17*80= 0.13(x+ 80) where x is the required volume of 9% solution.
0.09x + 13.6 = 0.13x + 10.4
13.6 - 10.4 = 0.13x - 0.09x
3.2 = 0.04x
x = 3.2 / 0.04
x = 80
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Answer:
£140
Step-by-step explanation:
First count up the amount of full squares, then you see the partially filled squares and try find the match for it to fill the square. It ends up being 24 squares, meaning 24 square feet. That multiplied by £5, as that is the cost of red wood, gives you the answer of £140
I want a expert or someone that can tell me this %100 I’m offering a brainalist + 20 points
Answer:
The answer is A
Step-by-step explanation:
Supplementary angles are angles which add up to 180°
∠1 and ∠3 add up to 180°, so they are supplementary.
Don't we just love geometry! Speaking of that, I need some help!
Please only answer if you know the answer, the comment section is right below. Please don't waste my points!
Also, please show all of your work, you are trying to help me better understand the concept, not just give me the answer.
The image is down below. Show work! Thanks!
Answer:
23.3 milesStep-by-step explanation:
Use the law of sines:
a / sin A = b / sin B = c / sin CApply to the given triangle:
AC / sin 39 = 32 / sin 60AC / 0.629 = 32 / 0.866AC = 0.6293*32/0.866AC = 23.3 (rounded)What is the perimeter and area of the composite figure?
Answer:
P = 33
A = 3900
Step-by-step explanation:
If a randomly thrown dart hits the board below,
what is the probability it will hit the shaded region?
B
1
3
D
con
4.
Answer:
Step-by-step explanation:
2x + 45
(Will be marked brainlist)
Answer:
x = 45°
Step-by-step explanation:
We know that (2x + 45)° and x° are adjacent angles, so they add up to 180°.
(2x + 45) + x = 180
3x + 45 = 180
3x = 180 - 45
3x = 135
x = [tex]\frac{135}{3}[/tex]
x = 45°
Please I need help really fast
Answer: 30 degrees
Step-by-step explanation:
The total is 180 degrees.
there is a right angle on the left. A right angle is 90 degrees.
180 - 90 = 90
There is still 90 degrees left, meaning that the right side is a total of 90 degrees.
2x + x = 3x
x = 90/3
x = 30
Therefore,
x = 30 degrees!
Hope it helped!
Pls help on both questions!tysm if u help me and I will pick brainliest if there's two answers
Answer:
Question 1: 70 mins
Question 2: R
Step-by-step explanation:
How many angles do 5 triangles and 3 rectangles have?
(1) 7
(2) 17
(3)
18
(4) 27
Answer:
27
Explanation:
5 * 3 = 15 (5 triangles with 3 angles each)
3 * 4 = 12 (3 rectangles with 4 angles each)
15 + 12 = 27
Answer:
the answer is 27 because a triangle has 3 sides so multiply 3 tomes 5 because of how many triandles and then the same with the rectangle that has 4 sides then multiply by 3 because of the number of triangles you have
Solve for y
Reduce any fractions to lowest terms. Don't round your answer, and don't use mixed fractions.
5y +3> -7y + 13
Answer:
y > 5/6
Step-by-step explanation:
that's what i got
let me know if it was right
if it was pls mark brainlest
Answer:
y>5/6
Step-by-step explanation:
Got it right
Find the area of the shape shown below.
Answer:
42
Step-by-step explanation:
Because of its shape I would imagine another flipped so it makes a square then solve for the square the divide.
7 x 12 =84
84÷2=42
What is 58.2 x 33.9 = ?
Answer:
Fraction: 1972 and 49/50
Decimal: 1972.98
Step-by-step explanation:
If the average person sleeps 7 hours every day how many days will it be before they have slept 35 hours
NEEDED ASAP PLZ!!!!!!!!!
The social studies teacher wants to know whether the students in the entire school prefer a model United Nations activity or a student government activity. The teacher draws a random sample from the following groups:
All teachers in the school
All boys in each grade
All students in each grade
All students in the social studies club
Which group best represents the population he should take a random sample from to get the best results for his survey? (5 points)
Group of answer choices
All teachers in the school
All boys in each grade
All students in each grade
All students in the social studies club
Answer:
All students in each grade
One fruit punch has 10% juice and another has 50%. How much of the 10% should be mixed with 30 gal of the 50% to create punch that is 25% juice
Answer:
We combine x ounces of 100% juice
with 40-x of 10% juice
to get 40 ounces of 55% juice
x + 0.1(40-x) = .55(40)
x + 4 - 0.1x = 22
0.9x + 4 = 22
.09x = 18
x = 20 ounces of 100% juice
40-x = 20 ounces of 10% juice
We combine 20 ounces of each.
Step-by-step explanation:
pls help find the answer !!
FIND EG
Answer:
EG = 7
Step-by-step explanation:
The parallel lines cut sides AB and AC into segments with proportional lengths.
AB/DF = AC/EG
(AD + DF + FB)/DF = AC/EG
(18 + 10 + 12)/10 = 28/EG
40/10 = 28/EG
4 = 28/EG
4EG = 28
EG = 28/4
EG = 7
One bar of candy A and two bars of candy B have 777 calories. Two bars of candy A and one bar of candy B contain 783 calories. Find the caloric content of each candy bar.
Answer:
A has 263 calories
B has 257 calories
Step-by-step explanation:
system of equations:
a + 2b = 777
2a + b = 783
I multiplied the first equation by -2 to eliminate the 'a' terms
-2a - 4b = -1554
+ 2a + b = 783
-3b = -771
b = 257
solve for 'a'
a + 2(257) = 777
a + 514 = 777
a = 263
find the following sum 7(3x2+2x-5)+2(-x2+3)
I think is -7
Step-by-step explanation:
because I calculated I'm not sure tho
please help me i only have 30 mins to an hour to finish
Answer:
D. 105 students
Step-by-step explantation: 11+10+21+6+2=50. So, 21 times 250 is 5250 and divided by 50 is 105.
Beth has saved 60$ for a gaming system.This is 30% of the total amount she needs for gaming system.how much does the new gaming system cost?
Answer:
$200
Step-by-step explanation:
30% = $60
divide both sides of the equation by 3:
10% = $20
multiply both sides by 10:
100% = $200
Hey!
Please only answer if you know the answer, the comment section is right below. Please don't waste my points!
Also, please show all of your work, you are trying to help me better understand the concept, not just give me the answer.
The image is down below. Show work! Thanks!
Answer:
4744 ftStep-by-step explanation:
Consider the angle of depression is same as the angle between horizontal line on the ground and the direct line from the plane to the airport (alternate interior angles).
Use tangent to find the missing length.
tan = opposite / adjacent
tan 34° = 3200 / xx = 3200 / tan 34°x = 4744The distance is 4744 ft
An examination consists of multiple-choice questions, each having five possible answers. Linda estimates that she has probability 0.4 of knowing the answer to any question that may be asked. If she does not know the answer, she will guess, with conditional probability 1/5 of being correct.A. What is the probability that Linda gives the correct answer to a question? B. What is the conditional probability that Linda knows the answer, given that she supplies the correct answer?
Answer:
a. 0.52 = 52% probability that Linda gives the correct answer to a question.
b. 0.7692 = 76.92% probability that Linda knows the answer
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Supplies the correct answer:
Event B: Knows the answer
A. What is the probability that Linda gives the correct answer to a question?
0.4(knows the answer)
1/5 = 0.2 of 1 - 0.4 = 0.6(guesses the answer). So
[tex]P(A) = 0.4 + 0.2*0.6 = 0.52[/tex]
0.52 = 52% probability that Linda gives the correct answer to a question.
B. What is the conditional probability that Linda knows the answer, given that she supplies the correct answer?
Intersection of events A and B is knowing the answer and giving the correct answer, which means that [tex]P(A \cap B) = 0.4[/tex]
The desired probability is:
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.4}{0.52} = 0.7692[/tex]
0.7692 = 76.92% probability that Linda knows the answer
Order the angles in each triangle from smallest to largest.
9514 1404 393
Answer:
B: L, M, N
Step-by-step explanation:
The sides are listed from shortest to longest. The angles opposite these sides will be in order smallest to largest. The name of the opposite angle is the vertex whose name is missing from the side's name.
MN is opposite angle L, the smallest
LN is opposite angle M, the middle-size
LM is opposite angle N, the largest.
Smallest to largest, the angles are ∠L, ∠M, ∠N.
What is the total surface area of the rectangular prism?
Answer:
286.5
Step-by-step explanation:
(3 x 7.5) x 2 = 45
(11.5 x 3) x 2 = 69
(11.5 x 7.5) x 2 = 172.5
45 + 69 + 172.5 = 286.5
HELP please :)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!asap
Answer:
B
Step-by-step explanation:
7100-3100
not sure though
plz need answers by today
Answer:
the 2
Step-by-step explanation:
Try to answer asap please
Answer:
it is 10in.
Step-by-step explanation:
(6 multiply 5)+(10 subtract 3)=
Answer:
37
Step-by-step explanation:
(6 × 5) + (10 - 3)
30 + 7
37
*PLEASE HELP GET 10 POINTS AND BRAINLIEST*
Select all the correct answers.
Blologists studying wildlife in the state parks want to estimate the average weight of chipmunks. They measured the weights of 5 chipmunk
from each of 10 parks. The mean of the data was 91 grams, and the median was 87 grams. Which predictions match the data?
About one-half of the chipmunks weigh more than 91 grams.
The average weight of the chipmunks is 87 grams.
About one half of the chipmunks welgh more than 87 grams.
The average weight of the chipmunks is 91 grams.
Answer-> the average weight of chipmunks is 87 grams. About half of the chipmunks weigh more than 87 grams
Answer:
D is correct
Step-by-step explanation:
Biologists studying wildlife in the state parks want to estimate the average weight of chipmunks. They measured the weights of 5 chipmunks from each of 10 parks. The mean of the data was 91 grams, and the median was 87 grams. Which predictions match the data?
About one-half of the chipmunks weigh more than 91 grams.
The average weight of the chipmunks is 87 grams.
About one-half of the chipmunks weigh more than 87 grams.
The average weight of the chipmunks is 91 grams.
FIND THE AREA (LEAVE EXPLANATION)
Answer:
40
Step-by-step explanation:
solve for two squares. Square 1: 32. Square 2: 8. answer: 32 + 8