What is the value of y in the solution to the following system of equations?
2x + y = -4
5x + 3y = -6
y= -32
Step-by-step explanation:
step 1: from the first equation you will make X the subject of formula, the equation then becomes;
X= 4-y
2
step 2: substitute X in the second equation, the equation then becomes 5 * [4-y] + 3y = -6
[ 2]
step 3: find the LCM and then cross multiply; 20-5y+6y = -6
2
20+y = -12
y= -12-20
y= -32
What question can you never honestly answer yes to?
Answer: DO YOU LIKE SOMEONE? AND THAT IS MY QUESTION I CAN NEVER ANSWER :) :P
Step-by-step explanation:
3x+18=3(x+6)please help
Answer: X = 4
Step-by-step explanation: Move all the terms besides X to the right side, from there you will divide each term by 3 then simplify.
What is standard deviation for 110 120 120 130 140 140 150 160 160 170
Answer:
Standard Deviation (cont’d)Weights(pounds):110 120 130 140 150 150 160 170 180 190Deviation scores(x) forM = 150:-40 -30 -20 -10 0 0 10 20 30 40 Squared deviation scores(x2):1600 900 400 100 0 0 100 400 900 1600Sum of squared deviation scores:1600+900+400+100+0+0+100+400+900+1600 = 6000SD= √(6000/(N-1) = SD= √(6000/(9) = 25.82Standard Deviation Interpretation•Provides a “standard”—the SDindicates the average amount of deviation of scoresfrom the mean•Tells you how wrong, on average, the mean is•An SDprovides valuable information when the distribution is normal:–There are approximately three SDsabove and below the meanin a normal distribution•In a normal distribution, a fixed percentage of cases lie within certain distances from themeanSDs and Individual Scores•A person who scores one SDbelow the mean has a higher score than 16% of the cases (2.3% + 13.6%)•A person who scores one SDabove the mean has a higher score than 84% of the cases (50.0% + 34.1%)Example: Midterm marks:
simplify x+x+y+y
I know this looks fairly easy but I keeping typing my answer into maths watch and its wrong apparently so please help
Answer:
2x+2y
Step-by-step explanation:
there are 2 x's so u can make it 1 by putting a 2 in front of it and same with y ... they have to be in alphabetical order and from greatest to least
that's how I was taught
Answer:
2(x+y)...... ......
Step-by-step explanation:
... ..........
can someone help me with this
What’s the answer? QUICK
Answer:
Step-by-step explanation:
4 and 1/6
Help me with my khan academy!
Answer:
the answer will be a because its on top of it
Answer:
E, I hope this helps :D
PLSSSSSSSS HELLLLLPPPPPPP!! BRAINLIEST FOR CORRECT ANSWER!!!!!!!!!!!!!!Find the amount paid for the loan. $2400 at 10.5% for 5 years
Answer:
3,660
I hope this helped
What is 4.4% of 625?
Answer:
27.5
Step-by-step explanation:
Answer:
Answer: 27.5 and your welcome!!
Use the right triangle shown to answer the question.
26
32°
*not drawn to scale
What is the approximate value of x?
Answer:45
Step-by-step explanation:
Answer:13.8
Also Stop cheating
Steve is creating a web page. He starts with a font of 5 9/10 points and decreases it by 1/2. He decreases it again by 6/10 points. Steve then realizes that the font is to small to read easily and increases it by 1 4/5 points. Which is the best estimate of the font's final size?
Answer:
6 3/5 points
Step-by-step explanation:
Steve is creating a web page.
Step 1
He starts with a font of 5 9/10 points and decreases it by 1/2.
Hence: Current font
= 5 9/10 - 1/2
= 5 + ( 9/10 - 1/2)
Lowest common denominator
= 10
= 5 + (9 - 5/10)
= 5 + 4/10
= 5 + 2/5
= 5 2/5 points
Step 2
He decreases it again by 6/10 points.
Current fonts
= 5 2/5 - 6/10
= 5 + ( 2/5 - 6/10)
Lowest common denominator
= 10
= 5 + (4 - 6/10)
= 5 + (-2/10)
= 5 - 1/5
= 4 4/5 points
Step 3
Steve then realizes that the font is to small to read easily and increases it by 1 4/5 points.
New font
= 4 4/5 points + 1 4/5 points
Lowest common denominator = 5
= 4 + 1 + (4/5 + 4/5)
= 5+ ( 4 + 4/5)
= 5 +(8/5)
= 6 3/5 points
The best estimate of the font's final size is 6 3/5 points
30) Use the distributive property to solve: 5(x – 2)
Karen recorded the numbers of people getting off her tram.
The mean number for 10 stops is 6.3.
After the tram stops at the 11th stop, the mean is 8.6.
How many people got off the tram at the 11th stop?
Answer:
32 people got off
Step-by-step explanation:
For the 10th stop, we can get the total number of people that have gotten off
Mathematically, this is the product of the mean and the number of stops
= 10 * 6.3 = 63 people
Now, for the 11th stop, the total becomes
11 * 8.6 = 94.6
Hence;
(94.6-63) = 31.6
since there are no fractional humans, the number of people getting off is 32
What is 3 2/3 + 4 3/4 equal to
Answer:
7 2/3 is the answer but it is equal to 23/3.
Step-by-step explanation
23/3 is an improper fraction. I hope this helps you!
A local grocery story has strawberries on sale for $1.45 per pound. How much would it cost to buy 5.5 pounds of strawberries? Round your answer to the nearest penny. Show your work on the sketchpad and type your answer below
Answer: The cost of 5.5 pounds strawberries =$ 7.98
Step-by-step explanation:
Given: A local grocery story has strawberries on sale for $1.45 per pound.
i.e. Cost for 1 pound strawberries = $1.45
Now, Cost of 5.5 pounds strawberries = 5.5 x (Cost for 1 pound strawberries)
= $ (5.5 x 1.45)
= $ 7.975 ≈ $ 7.98 [ Round to the nearest penny]
Hence, the cost of 5.5 pounds strawberries =$ 7.98
I WILL GIVE THE BRAINLYEST ANSWER WHO EVER ANSWRS THIS QUICKLY AND CORRECTLY
Kiera used her calculator to work out the value of a
number x. She wrote down the first two digits of the
answer on her calculator. She wrote down 7.3.
Write down the error interval for x.
Answer:
7.3≤x<7.4
Step-by-step explanation:
Please help desperate due today will give brainlist...
9514 1404 393
Answer:
5 forks2 spoonsStep-by-step explanation:
The higher-cost item is forks, so we can let x represent the number of those that are purchased. The total number purchased is 7, so the number of spoons purchased is (7-x).
The total cost is the sum of the costs for each of the items:
6x +5(7-x) = 40
x +35 = 40 . . . . . . simplify
x = 5 . . . . . . . . . . . subtract 35; the number of forks
7-x = 2 . . . . . . . . . the number of spoons
Daniel bought 5 forks and 2 spoons.
_____
Additional comment
Since $40 is not divisible by $6, we can guess that the number of forks Daniel bought will be a multiple of 5. That is, Daniel bought 0 or 5 forks. If he bought 0 forks, then he must have bought 40/5 = 8 spoons, so that is not a viable choice. The only number of forks that makes sense in this problem is 5 forks, so 2 spoons--numbers that total 7, as required.
What is 14 x 14 x 14 is exponet form
Answer:
14^3
Step-by-step explanation:
Help? I’ll mark u brainliest
Answer:
11 because adjacent is basically next to and NKL is 12
Step-by-step explanation:
Julie wants to buy a shirt that regularly sells
for $ 40. It's now on sale for 35% off. How
much is the discount? What is the new sale
price?
Answer:
18, 22
Step-by-step explanation:
please help me I don't get it
Answer:
5
Step-by-step explanation:
1/6 X 6 = 1 X 5 = 5
6 X 5 = 30
The Correct Answer is 5
Find the length of the third side to the nearest tenth. a=4 b=6 c=?
Answer:
[tex]2\sqrt{13}[/tex]
Step-by-step explanation:
Matteo is following this recipe to make a cake.
He wants to make three of these cakes.
How much of each ingredient does he need?
Recipe: Makes 1 cake
8 ounces butter
7 ounces sugar
10 ounces of flour
4 eggs
1 teaspoon (tsp) baking powder
Answer:
30 ounces of butter
25 ounces of sugar
35 ounces of flour
15 eggs
10 tbps of baking powder
Step-by-step explanation:
All you do is multiple each quantity by 5 I think
we are learning about this in school but check the web to see if it is correct
Solve 4 two-step equations:
1. 2x + 12 = 4
2. -5c + 9 = -16
3. -12 = -7 + x/4
4. -n/6 + 4 = 3
The table below shows all of the possible outcomes for rolling two six-sided number cubes.
How many possible outcomes are there?
Answer Choice
A)6
B)12
C)21
D)36
Find the area of the figure. Use 3.14 for it.
2 ft.
8 ft
3 ft
4 ft
3 ft
8 ft
The area of the figure is I
ft.
Answer:
0.5 X 2 X 3 = 3
0.5 X 3 X 3 = 4.5
8 X 4 = 32
32 + 4.5 + 3 = 39.5 square ft
What’s the commutative property of addition ?
Answer:
Its when you just swthc your thingy
Step-by-step explanation:
2+4=6
turns into
4+2=6
Answer:
When it is opposite
Step-by-step explanation:
There are 17 adult dogs and 8 puppies at the dog park. Which statement is
correct?**
a. The ratio of adult dogs to puppies at the park is 8:17.
b. The ratio of adult dogs to all dogs at the park is 17:8.
c. The ratio of puppies to adult dogs at the park is 25:8.
d. The ratio of puppies to all dogs at the park is 8:25.
Answer:
B?!
I'm so sorry if I am wrong !
Step-by-step explanation:
Have A Wonderful Day !!
How many pounds does 6.5 dozen cupcakes weigh?
• 1 cupcake = 35.3 grams
Answer:
35.3g * 78 =2,753.4g
2,753.4g = 6.07lbs