Answer:
40
Step-by-step explanation:
xy + x x= -10 y= -5
Plug in the given values and remember that multiplying two negative numbers makes the product positive.
(-10)(-5) + -10
50 - 10
40
Answer:
2. 40
all you have to do is fill in the letters with their values.
Step-by-step explanation:
xy + x = ?
-10 (-5) + (-10) = ?
50 + (-10)= 40
40 = 40
Hope this helps please mark brainliest:)!
Solve by Elimination:
x - 2y = 4
X - 1y = 2
its urgent
Answer:
x = 0 and y = -2
Step-by-step explanation:
x - 2y = 4 and X - 1y = 2
you mentioned elemination aka substraction
so you when substract x - x = 0 -2y -( -y) = -y and 4 -2 = 2
so - y = 2
or y = 2
now substitute the numbers
x + 4 = 4
x = 0
and try it with one of the equation or sometimes trying on both of them can be very helpful
A shop advertises 15% off it's prices in the sale.
A purse is £4.42 in the sale.
What was the original price?
Answer:
5.20
Step-by-step explanation:
100%-15%=85%
85%->4.42
100%->4.2÷85×100=5.20
1A. Nayeli wants to earn some extra money so she sells lemonade for $2 per cup and orange juice for $3 per cup. She sells a total of 100 cups and earns $240. Later she wants to find the number of cups of lemonade and the number of cups of orange juice she sold. Which system of equations below represents this situation?
1. 2x + 3y = 240 AND x + y = 100
2. 2x + 3y = 100 AND x + y = 240
3. x + 2y = 100 AND 3x + y = 240
4. 2x + 100 = 240.AND x = 3y
1B. In the context of the problem, what does your solution (x,y) mean? Fill in the blanks for the solution sentence below: Nayeli sold ____ cups of lemonade and ____ cups of orange juice. Write your answer in this form: 20, 40
Answer:
1. 2x + 3y = 240 AND x + y = 100
Nayeli sold 60 cups of lemonade and 40 cups of orange juice.
Step-by-step explanation:
Let
Number of cups of lemonade sold = x
Number of cups of orange juice sold = y
The system of equation could be represented by:
2x + 3y = 240 (1)
x + y = 100 (2)
from (2)
x = 100 - y
Substitute into (1)
2x + 3y = 240 (1)
2(100 - y) + 3y = 240
200 - 2y + 3y = 240
- 2y + 3y = 240 - 200
y = 40 cups
Substitute y = 40 into (2)
x + y = 100 (2)
x + 40 = 100
x = 100 - 40
x = 60 cups
Nayeli sold 60 cups of lemonade and 40 cups of orange juice.
(x, y) = (60, 40)
Name the constant in the expression:
3x + 5
please explain how I can solve problems like this
SOMEONE PLEASE HELP ME WITH THISSS ASAP
Answer:
C
Step-by-step explanation:
Divide the numerator but the denominator to get a decimal. (That tip saved me in 6th grade)
Answer fast!!!!!!!!!!!!!!
Yo anyone knows the answer to this
Answer:
3
Step-by-step explanation:
(8y-3)+(-8y+6)=
8y + -8y = 0
-3 + 6 = 3
0 + 3 = 3
Please help me. Can you help me do A,B,C,D,E, and F please
Answer:
KGHKWGJRWGJHWG
Step-by-step explanation:
Multiplying by which number is equivalent to a decrease of 11%
Answer:
n = the number
3n = three times the number
3n - 11 = three times the number decreased by eleven
Step-by-step explanation:
What division problem can be represented using the number line?
–19w + 11 = –17w − 19
w=
Please help, will mark brainliest to correct answer!
Answer:
w = 15
Step-by-step explanation:
We have an expression and are asked to solve for w.
-19w + 11 = -17w - 19
Subtract 11 from both sides :
-19w = -17w - 30
Add 17w to both sides :
-2w = -30
Divide -2 from both sides to isolate w :
w = 15
How is 4.4^x the same as 4^x+1????
Answer:
Step-by-step explanation:
From laws of indices, we know that;
a^(x) × a^(y) = a^(x + y)
Similarly, in our question, 4 • 4^(x) implies that; 4¹ × 4^(x)
Since 4 can be also expressed as 4¹.
Thus,this equals; 4^(x + 1)
This expression is same as the other one given in the question as 4^(x + 1).
Thus, 4 • 4^(x) is the same as 4^(x + 1).
ANSWER FOR BRAINLY, I NEED QUESTIONS 2 AND 3 ANSWERED
Answer:
AD=16
AB=20
Step-by-step explanation:
BD=12
9/DB=DB/AD=9/12=12/AD
9AD=144
AD=16
AB^2=25^2-15^2
AB^2=400
AB=20
A jacket sells for $24.99. All the merchandise in the store is on sale at a 25% discount. If the sales tax is 8%, what will a customer pay for the jacket?
Answer:
$20.24
Step-by-step explanation:
Since the 25% discount takes off a quarter of the price, we multiply 24.99 by 3/4
24.99 x 3/4 = 18.74
So with the discount and without tax, the cost of the jacket is 18.74
Then we add 8% for sales tax
8% of 18.74 is $1.50
18.74 + 1.5 = 20.24
So the final cost of the jacket is $20.24
I saw this was your first question. Welcome to Brainly.
The perimeter of a triangle is 90 cm. The lengths of the sides of the triangle are in the ratios 3:5:7 Work out the length of the longest side of the triangle.
Answer:
9cm 5:9
Step-by-step explanation:
Find the volume of each shape shown. Show all work!
Answer:
cylinder: v= 6616.19
cone: v=4539.6
Step-by-step explanation:
cylinder: π r²h
pi= 3.14
radius/r=9
height/h=29
29* 9² * π= 6616.19
cone: π r² [tex]\frac{h}{3}[/tex]
pi= 3.14
radius/r=17
height/h=15
π * 17² * 15=4539.6
hope this helps :) have a nice day !!
please help immediately this is 2 days late
Answer:
51
Step-by-step explanation:
Can someone help me please
Answer: add 1
Step-by-step explanation:
a bakery used 25% more butter this month than last month if the bakery used 240 kilograms of butter last month how much did it use this month
Answer:
300
Step-by-step explanation:
25% of 240 is 60.
0.583
What is it in standard form
Answer:
It should be 583*10^-3
Define the opposite and the absolute value of -8.
O The opposite of -8 is -8. The absolute value of -8 is 8.
O The opposite of -8 is -8. The absolute value of -8 is -8.
O The opposite of -8 is 8. The absolute value of -8 is 8.
O The opposite of -8 is 8. The absolute value of -8 is -8.
Answer:
The opposite of -8 is 0 and the absolute value in 8
Step-by-step explanation:
Answer:
The opposite of -8 is 8. The absolute value of -8 is 8.
Step-by-step explanation:
For the expression 6 - y + 3, determine the coefficient for the variable
term.
-1
0
3
6
Answer:
Step-by-step explanation:
The coefficient of a variable is always the number before the variable, if there is no number before a variable the coefficient is always 1.
In this case, since the subtraction sign is before the variable, you will need to make the variable positive by making the coefficient of variable y, -1.
In short terms, your answer is -1. :)
What expression is equivalent to 9(9m + 3t)?
Answer:
81m+27t
Step-by-step explanation:
Answer:
81m + 27 t
Step-by-step explanation:
Please can you help me on this equation.I just cant seem to solve this though i mostly don't need help.Thank you [tex]\frac{1}{x^2+1} -\frac{x^4}{x^2+1}+\frac{x^4}{x^2-1} -\frac{1}{x^2-1}[/tex]
Answer:
2
Step-by-step explanation:
combine like denominators:
(1-x^4)/(x^2+1)+(x^4-1)/(x^2-1)
factor:
(1-x^2)(1+x^2)/(x^2+1)+(x^2+1)(x^2-1)/(x^2-1)
reduce:
(1-x^2)+(x^2+1)
1+1=2
Tom has a 4-sided spinner and the table below shows the probabilities
that when the spinner is spun it will land on 1, 3 and on 4
Number
1
2
3
4
Probability
0.1
0.2
0.4
The spinner is spun once.
a) What is the probability that the spinner will land on 2?
Il
(1)
b) Which number is the spinner least likely to land on?
(1)
c) If Tom spins the spinner 80 times, work out an
estimate for the number of times the spinner will land on 3
(2)
Answer:
0.3
Step-by-step explanation:
it's the only one not there
Pls help for my math class!
Answer:
i think it is b but i am not 100%
sorry if i am wrong
Step-by-step explanation:
A car salesman receives 3% commission on his total weekly sales. Last week his total sales were £28500
How much commission does he earn?
which system of equations has one solution
-5x - 10y = 24
Answer:
x=24/5+2y
Step-by-step explanation:
isolate one of the variables
There are 4 dogs, 6 cats, a rooster and 8 pigs on a farm. What is the ratio of
pigs to all the other animals?
A.8:11
B.11:8
C.8:10
D.10:8
Answer: A, 8:11
Step-by-step explanation:
4 dogs + 6 cats + 1 rooster = 11
8 pigs
ratio for pigs to other animals : 8:11
8 goes first bc the question was "What is the ratio of
pigs to all the other animals? "
pigs first - other animals second
The third term in an arithmetic sequence is 9 and the fifth term is 21 . If the first term if a1, which is an equation for the nth term of this sequence?
A:an=6n-9
B:an=14n+6
C:an=6n+14
D:an=9n-6
Answer:
A: an = 6n - 9
Step-by-step explanation:
third term in an arithmetic sequence is 9
a3 = a + 2d
a + 2d = 9
the fifth term is 21
a5 = a + 4d
a + 4d = 21
a + 2d = 9 (1)
a + 4d = 21 (2)
Subtract (1) from (2) to eliminate a
4d - 2d = 21 - 9
2d = 12
d = 12/2
d = 6
Substitute d = 6 into (1)
a + 2d = 9 (1)
a + 2(6) = 9
a + 12 = 9
a = 9 - 12
a = -3
nth term of this sequence = a + (n - 1)d
= -3 + (n - 1)6
= -3 + 6n - 6
= 6n - 9
an = 6n - 9