2(-1)+y=3
What is the answer
Answer: Y= 5
Step-by-step explanation:
2(-1)+y=3
2 x -1=-2
-2+y=3
+2 +2
y=5
Answer:
y = 5
multiply:
2 (-1) + y = 3 → -2 + y = 3
rearrange:
y - 2 = 3
add to both sides:
y - 2 + 2 = 3 + 2
simplify:
y = 5
I hope this helps! Sorry if it's the wrong answer! (′д｀σ)σ
Which situation can be represented by the equation -20 x 4 = -80?
Answer:
Stacy has no money in her bank account. She buys 4 vases which each cost $20. At the end of the transaction, Stacy's balance is -80 dollars.
Whoever answers i’ll mark brainliest
Draw out a two column proof
A theater has 576 seats arranged in 64 rows. If there is the same number of seats in each row, how many seats are in one row?
Answer:
9 seats in each row
Step-by-step explanation:
576/64
Answer: in each row there are 9 seats
Step-by-step explanation:
The scale of a map says that 4 cm represents 5 km. a. what distance on the map (in centimetres) represents an actual distance of 4 kilometres? b. What is the actual number of kilometres that is represented by 5 centimetres on the map?
Answer:
a. 3 cm
b. 6 km
Step-by-step explanation:
to be completely honest, I just shoot my answer based on the pattern.
if you notice that when the scale is 4 cm, the actual distance is 5 km. When the distance is 4 km, the scale should probably be 3 cm. It's the same with the 5 cm scale, then the distance should be 6 km
Step-by-step explanation:
Use ratios to solve it
a)
4 cm → 5 kmx cm → 4 kmx = 4*4/5 = 3.2 cm
b)
4 cm → 5 km5 cm → x kmx = 5*5/4 = 6.25 km
If a seed is planted, it has a 95% chance of growing into a healthy plant.
If 7 seeds are planted, what is the probability that exactly 3 do grow? Round to 4 decimal places.
If 7 seeds are planted, the probability that exactly 3 do grow is;
P(X = 3) = 0.0002
This is a binomial probability distribution problem where;
P(X = x) = ⁿCₓ × pˣ × q⁽ⁿ ⁻ ˣ⁾
We are given;
p = 95% = 0.95
q = 1 - p
q = 1 - 0.95
q = 0.05
Thus If 7 seeds are planted, the probability that exactly 3 do grow is;
P(X = 3) = ⁷C₃ × 0.95³ × 0.05⁽⁷ ⁻ ³⁾
P(X = 3) = 35 × 0.857375 × 0.00000625
P(X = 3) = 0.000187
To four decimal places gives;
P(X = 3) = 0.0002
Read more at; https://brainly.com/question/19261596
Louise got scores 88 and 78 on her first two tests. What score must she
make on her third test to keep an average of 80 or greater?
Answer:
You want the average of three scores to be at least 80:
(88 + 78 + x)/3 ≥ 80
88 + 78 + x ≥ 80(3)
166 + x ≥ 240
x ≥ 74
You must make at least 74 on the 3rd test to maintain an average of at least 80%
Step-by-step explanation:
He spent $25 on a box of candy bars and sold them for $2 each. If his profit (after earning back the $25) was $69, how many candy bars did Leo sell?
Which equation can be used to solve the problem?
Answer:
34.50
Step-by-step explanation:
69/2=34.50
Three teams, A, B and C, play in a competition.
games won by A: games won by B = 3:1
games won by B: games won by C = 4:3
Team B has won 8 games.
In total, how many games have the three teams won?
Answer:
A = 24
B = 8
C = 6
Step-by-step explanation:
4:3 from B:C
8:6
8 games won by B and 6 games won by C.
3:1 from A:B
24:8
24 by A and 8 by B
20,407.1859
which number is in the tenths place?
Answer:
1
Step-by-step explanation:
The tenths place is the first place to the right of the decimal.
Ex:
1.39
3 is in the tenths place
Your ex:
20,407.1859
1 is in the tenths place
Answer:
First is.
Step-by-step explanation:
20 is in the tenths place,, this is like 3rd grade math
9) One baseball team played 34 games throughout their entire season. If this baseball team won 22 of those games, then what percentage of their games did they win? Round your answer to the nearest tenth if necessary.
10) At a local department store, slacks have been reduced to $27. This price is at 69.2% of the original price for slacks. Given this, what was the original price of the slacks? Round your answer to the nearest whole number if necessary.
Answer:
9): 64.7
10): 39$
Step-by-step explanation:
Answer:
64.7% and $39
Step-by-step explanation:
Question 9:
This means that the baseball team won 22/34 of their games through their entire season. In order to find the percentages of game they won, you divide 22 by 34, which comes out to 0.64705..., which becomes 64.705%. Rounding this to the nearest tenth, this percentage becomes 64.7%. Therefore, the percentage of games their baseball team is 64.7%.
Question 10:
We can represent this problem as the proportion:
[tex]\frac{27}{69.2} =\frac{x}{100}[/tex]
with x being the original price of the slacks.
We cross multiply to solve this equation. 27 times 100 is 2700. Next, we divide 2700 by 69.2, which comes out to 39.017341. Rounding this to the nearest whole number, this value comes out to 39. Therefore, the original price of these slacks is $39.
5. Kathy plans to purchase a car that
depreciates (loses value) at a rate of 14% per
year. The initial cost of the car is $21,000.
How much will the car be worth
in 6 years?
Answer:
At the end of the 1st year you have 21,000-0.14(21000)
= (1-0.14)21000 = 0.86(21,000)
So after three years you have 21000(0.86)(0.86)(0.86)
= 21000(0.86)^3
Answer:
3360
Step-by-step explanation:
Find 14% of 21,000 then multiply by six which gives you 17,640. Then you subtract 21,000-17640. that is your answer.
which table represents a function? will give brainliest and maybe money
Answer:
3)
Step-by-step explanation:
The x side of the table can't have the same numbers, while the f(x) side can.
:)
also f(x) is the same as y on a table therefore has the same rule.
solve pls brainliest
Answer:
j*14 + 8
Step-by-step explanation:
What is greater 0.5 or 2/4 plz help
Step-by-step explanation:
Both are equal
0.5 and 2/4 = ½ = 0.5
Answer:
they are both the same
.5
and 2/4 as a decimal is .5
Step-by-step explanation:
6/7 + 1/3 in simplest forms plz
Answer: 1 4/21
Step-by-step explanation:
6/7+1/3= 25/21= 1 4/21
Step-by-step explanation:
[tex]\frac{6}{7}[/tex] + [tex]\frac{1}{3}[/tex] = [tex]\frac{25}{21}[/tex]
Simplify
[tex]\frac{25}{21}[/tex] = 1 [tex]\frac{4}{21}[/tex]
25 ÷ 21 = 1 remainder 4
Hope it helps. =D
f(x) -2x-6 and g(x)=3x+9 find (f-g)(x)
9514 1404 393
Answer:
(f -g)(x) = -5x -15
Step-by-step explanation:
(f -g)(x) = f(x) -g(x) = (-2x -6) -(3x +9) = -2x -6 -3x -9
(f -g)(x) = -5x -15
Over a 5-hour period, the
temperature dropped a total of
12. If the temperature is now
72", what was the temperature at
the beginning of the 5-hour
period?
Answer:
12°F
Step-by-step explanation:
Temperature dropped
2°F
every
1
hour
After
6
hours
6
hours
×
2°F drop
1
hour
=
12°F drop
There is a drop in
12°F
Help me on 1. Please
what is 1*5+89 20 points
Answer:
your answer is going to be 94
Step-by-step explanation:
1×5=5
5+89=94
Answer: 1*5+89 = 94
The answer is 94
Answer or you will get 0 doritos
Answer:
answer is b
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
When you are subtracting a negative, it is the same as just adding a positive.
[tex]-9\frac{2}{7} + 10\frac{3}{7}[/tex]
We can rearrange the problem to read:
[tex]10\frac{3}{7} -9\frac{2}{7}[/tex]
Now, we can subtract the numbers and fractions separately.
[tex]10+\frac{3}{7} -(9+\frac{2}{7})[/tex]
[tex](10-9)+(\frac{3}{7}-\frac{2}{7} )=1+\frac{1}{7}=1\frac{1}{7}[/tex]
This is B
(2)/(7):0.6x=(4)/(21):0.25
Answer:
= 1.6
Unless you meant to clarify what in the equation you needed, but that is the answer to it.
f(t)= x2 + 2; Find f(-6)
Answer:
-12
Step-by-step explanation:
F(T)=2(1×+1)
2(1×+1)= x2 + 2, and since we were trying to find what f is, we know know f=2 because of the equation 2(1×+1), so, 2(-6)= -12
help me with this sum I will mark you as brainiest
Answer:
1.21
2.42
3.249.67
4.155.25
5.63.25
6.86
7.80.83
8.47.125
9.153
10.438
Step-by-step explanation:
hope helful pls follow and give brainliest tq
Answer:
21
42
249 2/3
77 5/8
63 1/2
86
80 5/6
47 1/8
153
43 8/9
Step-by-step explanation:
those are quotients not sums
Identify the terms and coefficients of −4 √ x + y − 5x
Answer:
The coefficient of -4√x is -4; that of y is 1; and that of -5x is -5.
Step-by-step explanation:
The terms include -4√x, y, -5x.
The coefficient of -4√x is -4; that of y is 1; and that of -5x is -5.
Complete the table for the given rule.
Rule: y is 1 less than 2 times x
According to the rule, the table is:
x|y
2|3
3|5
4|7
The translation of the rule to a math expression is:
[tex]y = 2x - 1[/tex]
Then, for x = 2:
[tex]y = 2(2) - 1 = 4 - 1 = 3[/tex]
For x = 3:
[tex]y = 2(3) - 1 = 6 - 1 = 5[/tex]
For x = 4:
[tex]y = 2(4) - 1 = 8 - 1 = 7[/tex]
Thus, the table is:
x|y
2|3
3|5
4|7
A similar problem is given at https://brainly.com/question/13094243
Mass refers to the amount of matter that an object contains.
Question 1 options:
True
False
Answer:
true
Step-by-step explanation:
true the definition is right
If a pair of alternate exterior angles are supplementary, what is the measure of each angle?
Kristy downloads two songs to her MP3
player. The songs are 3 minutes and 4- minutes
long. About how many minutes of memory will these
two songs use altogether?
Answer:
About 7 minutes
Step-by-step explanation:
3 minutes + 4 minutes= 7 minutes memory used for two songs
Simplify and solve the equation
Answer:
y=6
Step-by-step explanation:
y+6 3
----- = ----
8 2
2(y+6)=8(3)
2y+12=24
2y=24-12
2y = 12
---- ----
2 2
therefore y=6
Answer:
it will be 6 im 100%
Step-by-step explanation:
y=6