Answer:
[tex]3x - 4y = 22 - - - - (i) \\ - 9x + 4y = 38 - - - - (ii) \\ from \: (i) \\ 4y = 3x - 22 - - - - (iii)\\ substitute \: for \: 4y \: in \: (ii) \\ - 9x + (3x - 22) = 38 \\ ( - 9 + 3)x = 38 + 22 \\ - 6x = 60 \\ x = \frac{60}{ - 6} \\ x = - 10 \\ \\ substitute \: for \: x \: in \: (iii) \\ 4y = (3 \times - 10) - 22 \\ 4y = - 30 - 22 \\ 4y = - 52 \\ y = \frac{ - 52}{4} \\ y = - 13[/tex]
The area of a circle is square inches. What is the radius?
Answer:
9 inches
Step-by-step explanation:
There are 138 boys and 132 girls in a soccer league. The players are equally divided into 18 teams. How many players are on each team?
A) 15
B) 16
C) 17
D) 18
Answer : A) 15
138+132=270
270÷18=15
That’s why the correct answer is 15.
*Hopefully this helps!
Answer: A. 15
Step-by-step explanation: add the amount of female and boy together and then divide that by 18
simplify each expression 4.4x + 6- 2y + 4
Answer:
4.4x−2y+10
Step-by-step explanation:
PLS PLEASE PLEASE HELP ILL GIVE BRAINLEST
Answer:
14 ( i may be wrong)
Step-by-step explanation:
5:3
3+2=5
?:12
12+2=?
14
what is the molecular formula for this compound
Answer:
4 C3 H6 ........................
the expression (x^-8) (x^3) is equivalent to the expression x^n. what is the value of n?
Answer:
n=-5
Step-by-step explanation:
You must multiply [tex]x^{-8}*x^{3}[/tex]. The laws of exponents state that when multiplying exponents of the same base, you can just add the exponents and raise the base to the sum of the exponents. So, [tex]x^{-8}*x^{3}=x^{(-8+3)}=x^{-5}[/tex]. Since our end product is [tex]x^{-5}[/tex], n is equal to -5.
Mrs. Klein purchased a cell phone data plan for her 3 daughters to share equally. Each daughter uses 6.5 GB of data each month. What is the total GB of data, d, used each month by all 3 daughters?
I WILL GIVE BRAINLIST PLEASE HURRYYY
Answer: 19.5 GB
To find this answer, we multiply the number of daughters (3) by the amount of data each uses per month (6.5)
So, 6.5*3 = 19.5 is the total amount of gigabytes used per month.
Damarcus and Xavier went to the arcade to play their two favorite games. Damarcus played 4 rounds of game 1 and 6 rounds of game 2 for $18.00. Xavier played 5 rounds of each game for $20. What is the cost of game 1?
Answer:
$3
Step-by-step explanation:
Given :
Let game 1 = x ; game 2 = y
4x + 6y = 18 - - - (1)
5x + 5y = 20 - - - (2)
From (2)
x + y = 4
y = 4 - x
Substitute y = 4-x in (1)
4x + 6(4 - x) = 18
4x + 24 - 6x = 18
-2x = 18 - 24
-2x = - 6
x = 6/2
x = 3
Game 1 cost $3
Answer:
3$
Step-by-step explanation: :)
From a group of five boys and seven girls, two boys and three girls will be selected to attend a conference. In
how many possible ways can the selection be made?
Step-by-step explanation:
Number of combinations
= 5C2 * 7C3
= 10 * 35
= 350.
Hence there are 350 possible ways.
P.S.
5C2 = 5! / (2!3!) = 120 / (2 * 6) = 10.
7C3 = 7! / (3!4!) = 5040 / (6 * 24) = 35.
Suzy is using a bucket to collect nuts from a nut tree. She then dumps the bucket into a barrel for shipping of the nuts. She notices that 1 over 2 the bucket of nuts fills 2 over 3 of the barrel.
Part A: Write and solve an equation to find the number of nuts that will fill the entire barrel. Show your work. (8 points)
Part B: Explain your answer in words. (2 points)
Answer:
3/4 bucket
Step-by-step explanation:
Given that:
1/2 bucket of nut fills 2/3 of barrel ;
Letbthe number of bucket if nut which fills entire barrel = x
Fraction of entire barrel = 1 /1 = 1
1/2 bucket = 2/3 barrel
x buckets = 1 barrel
Cross multiply ;
(2/3)x = 1/2
2x / 3 = 1/2
2x * 2 = 3 * 1
4x = 3
x = 3/4
Hence, 3/4 bucket of nut will fill entire barrel
What is M<3. PLEASE HELPPP
Answer:
105 degrees
Step-by-step explanation:
The angle of a straight line is 180 degrees. Since we need to find the angle for 3, it is 180-75 which is 105 degrees.
Can you help me with ratios?
As a holiday gift, coach tells bryan that he will be running laps. if he runs 1 1/3 miles in 1/10 hour when doing laps for basketball, what is his rate of speed in miles per hour
Answer:
13 1/3 mph
Step-by-step explanation:
If running 1 1/3 miles takes him 1/10 hour, 1 1/3 * 10 will be his mph
jacob divided 976 by28 using partial quotients. whats missing from jacob work?
A monkey is swinging from a tree. On each swing she travels along an arc that is 75% as long as the previous swing arc. The total length of the arcs from her first 4 swings is 175m.
Answer:
The first swing is 64m
Step-by-step explanation:
The complete question asks for how long the first swing is.
The monkey is swinging from the tree with each swing being along an arc, where each arc is 75% of the previous arc. Also, given that its first four swings is 175cm, we can denote her first swing as y.
This means the second swing would be = 0.75y
The third would be = 0.75(0.75y) = 0.5625y
The fourth would be = 0.75(0.5625y) = 0.421875y
Since the total is 175, we have
y + 0.75y + 0.5625y + 0.421875y = 175
2.734375y = 175
y = 175/2.734375
y = 64m
Please help me
thank you
9514 1404 393
Answer:
Q4: 7.5
Q5: 3
Step-by-step explanation:
Q4. The picture is a bit fuzzy, but it looks like '+' means '+' and the expression is ...
[tex]18\div4+3\times2\div2=4.5+6\div2=4.5+3=\boxed{7.5}[/tex]
__
Q5. There are 3 instances of "..., 7, 5, x", where x is not 9. They are circled below.
The pair of points (7,4) and (3, y) lie on the line with a slope of 1/4.
What is the value of y?
PLEASE I NEED HELP HURRY
A 20
Or
B -12
Or
C -3
Or
D 3
The last time it placed an order for ingredients, Sweet Treats Bakery ordered 7,720 kilograms of sugar. This time, the bakery is ordering 13,510 kilograms. What is the percent of increase in the size of the sugar order?
Answer:
The percent of increase in the size of the sugar order is 75%.
Step-by-step explanation:
To find the percent of increase in the size of the sugar order, you can use the following formula:
% increase = ((New number-Original number) ÷ Original Number)x100
New number=13,510
Original number=7,720
Now, you can replace the values in the formula:
% increase = ((13,510-7,720) ÷ 7,720)x100
% increase = (5,790 ÷ 7,720)x100
% increase = 0.75x100
% increase = 75%
According to this, the answer is that the percent of increase in the size of the sugar order is 75%.
Answer:
i think 75%
Step-by-step explanation:
subtract (3x -n -1) and (2-2x -n)
Step-by-step explanation:
Subtracting (3x -n -1) and (2-2x -n)
= 3x - n - 1 - 2 + 2x + n
= 5x - 3
Hope it will help :)
Answer:
5x - 3
Step-by-step explanation:
PLS HELP ME ILL GIVE BRAINLIEST IF YOU EXPLAIN AND ANSWER
Answer: U=9
Step-by-step explanation:
A theater group sells tickets to a play. If an adult ticket costs $12.50 and a child ticket costs $8.75, then how much money will the group collect by selling 70 adult tickets and 15 child tickets?
Answer:
$1,006.25
Step-by-step explanation:
If you sell 70 adult tickets at $12.50 each, use the equation
12.5*70=875
By using the same equation for kids tickets,
8.75*15=131.25
Then add the sums
875+131.25=1006.25
Hope this helps!
HELP ME PLEASE BRAINLIEST ANSWER PLEASE HELP ME
Answer:
alright hers your brainliest and thank you very much i really appreciate it
Step-by-step explanation:
PLS HELP MY HWS DUE IN 20 MINS AND PLS SHOW WORK TY
find all missing angles
m<1:
m<2:
m<3:
m<4:
m<5:
m<6:
m<7:
Answer:
m<1 51°
m<2 34°
m<3 95°
m<4 38°
m<5 47°
m<6 74°
m<7 59°
m<1 there are 180° on a straight line. 180-129= 51°
m<2 there are 180° in a triangle. we have been given 95° and have just established that m<1 is 51° 180- 95- 51 = 34°
m<3 is a vertically opposite angle to the 95° given. therefore must = 95°
m<4 180° in a triangle. have just established m<3 as 95° have been given 47°. 180 - 95 - 47 = 38°
m<5 is vertically opposite to the 47° given so therefore = 47°
m<7 180° on a straight line 180 - 121 = 59°
m<6 180° in a triangle have previously established that m<5 = 47° and m<7 = 59°
180 - 47 - 59 = 74°
hope that helps xx
A chess tournament was being held. This single-elimination tournament (in which paired competitors
played matches and only the winner of a match continued to the next round) began with 16 competitors.
How many matches were played?
A total of matches were played. _____
I really need help with this problem!
Answer:
A total of 15 matches were played.
Step-by-step explanation:
To determine the number of matches that were played in the chess tournament, knowing that there are 16 participants who face each other in a tournament of direct elimination, the following logical reasoning must be carried out:
In the first round there are 16 players, so being matches between 2 players, there are 8 matches (16/2). In the second round, applying the same reasoning and taking into account that there are only 8 players left, since the others have been eliminated, there are 4 matches (8/2). The same in the semifinals, where there are 2 games (4/2), and finally, the final to a single game.
Therefore, since 8 + 4 + 2 + 1 equals 15, the number of matches played in the tournament is 15.
I NEED HELP ASAP!
Evaluate -6 - (-9) ÷ 3
Answer:
-3
Step-by-step explanation:
yw
What is the first step in solving x^2 +14x-43=3 completing the square?
Answer:
Step-1 : Multiply the coefficient of the first term by the constant
Step-by-step explanation:
Answer:
step 1 = Subtract 3 from both sides
step 2= Use quadratic formula with a=1, b=14, c=-46
Answer to the equation = x=−7+√95 or x=−7−√95
The garden club earned $15 per hour by weeding neighborhood gardens for t hours. A generous donor has agreed to double their earnings.
How much did the garden club earn in all?
Answer:
30
Step-by-step explanation:
30 i think
2/3 divided by 5 1/3
Answer:
0.125
Step-by-step explanation:
hope this helps :).
Answer
the.answer is 0.125
5. (01.03 MC)
Which of the following is a step in simplifying the expression
? (5 points)
Answer:
A
Step-by-step explanation:
To simplify the expression you first would need to multiple each part of it by -2 in order to remove the parenthesis
cos sec² a - cot²a=1
Answer:
We want to prove the relation:
cosec(a)^2 - cot(a)^2 = 1
where:
cosec(a) = 1/sin(a)
cot(a) = 1/tg(a) = cos(a)/sin(a)
We can start with the relationship:
cos(a)^2 + sin(a)^2 = 1
Now, let's divide by sin(a)^2 in both sides:
(cos(a)^2 + sin(a)^2)/sin(a)^2 = 1/sin(a)^2
cos(a)^2/sin(a)^2 + sin(a)^2/sin(a)^2 = (1/sin(a))^2
(cos(a)/sin(a))^2 + 1 = (1/sin(a))^2
and remember that:
cosec(a) = 1/sin(a)
cot(a) = 1/tg(a) = cos(a)/sin(a)
Then we can write:
(cos(a)/sin(a))^2 + 1 = (1/sin(a))^2
as:
cot(a)^2 + 1 = cosec(a)^2
1 = cosec(a)^2 - cot(a)^2
And this is the relation we wanted to prove.