Answer:
1a.2.5x³-2.25x²+3.5x-1.5
1b.No, they aren't equal. (worked out the product for both and they weren't equal, see below)
2a.-2x⁶+7x⁴+3x³-3x²+11x+20
2b.Yes. When multiplying, it doesn't matter which term/expression you put first
3. The equation has two solutions: x=-2, x=3
Step-by-step explanation:
1. (a)
(0.5x-0.25)(5x²-2x+6)
0.5x(5x²-2x+6)-0.25(5x²-2x+6)
2.5x³-x²+3x -1.25x²+0.5x-1.5
2.5x³-2.25x²+3.5x-1.5
(b)
(0.25x-0.5)(5x²-2x+6)
0.25x(5x²-2x+6)-0.5(5x²-2x+6)
1.25x³-0.5x²+1.5x -2.5x²+x-3
1.25x³-3x²+2.5x-3
This is not equal to our answer for 1(a), so we can see they're not the same.
2(a)
(-2x³+x-5)(x³-3x-4)
-2x³(x³-3x-4) +x(x³-3x-4) -5(x³-3x-4)
-2x⁶+6x⁴+8x³ +x⁴-3x²-4x -5x³+15x+20
-2x⁶+7x⁴+3x³-3x²+11x+20
(b)
Yes. When multiplying, it doesn't matter which term/expression you put first: xy=yx. For example, 2(3)=6 and 3(2)=6.
3
2x²-2x-12=0
(divide each term by 2)
x²-x-6=0
(x+2)(x-3)=0
Anything multiplies by zero is zero, so either x+2=0 or x-3=0
If x+2=0, x=-2. If x-3=0, x=3.
The equation has two solutions: x=-2, x=3
Fastest correct answer will get brainliest
Solve the following quadratic equation for all values of x in simplest form (x+4)²+38=47
Answer:
- 1
Step-by-step explanation:
( x + 4 )² + 38 = 47
( x + 4 )² = 47 - 38
( x + 4 )² = 9
( x + 4 )² = 3²
Square root on both sides,
x + 4 = 3
x = 3 - 4
x = - 1
Find the median of the data in the dot plot below.
Answer:
The answer is 25.
Step-by-step explanation:
I hope this helps! Have a great rest of your day!
Answer:
25
Step-by-step explanation:
All the data values from least to greatest:
20, 23, 23, 25, 25, 27, 27, 27, 28
Since the data values are odd, the middle value is the median:
25
What is the sum of 52.07+8.43
Answer:
60.5
Step-by-step explanation:
Ehhh 52.07+8.43=60.5?
What’s 50 divided by 50?
Answer:
69 nah i'm kidding 4069 nah i'm kidding its 40 nah butt fr its 0
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
50 fits in 50 once
50 ÷ 50 = 1
50 × 1 = 50
At the math store, one circle costs one amount, and each square costs another amount. 5 circles plus one square is 20 cents. How much would 12 circles plus 5 squares cost?
Answer: 61 cents
Step-by-step explanation:
Let’s assume a circle is X and a square is Y.
The problem states:
5x + 1y = 20
2x + 3y = 21
Taking the 1st equation we can see that
1y = 20-5x which is the same as
y = 20–5x
If we replace y in the 2nd equation with the above we get:
2x + 3(20–5x) = 21
which is the same as
2x + 60 - 15x = 21
we can rearrange to get
2x -15x = 21 -60
which is the same as:
-13x = -39
therefore x = -39/-13 or
x = 3
We can then calculate y
If y = 20–5x, then y = 20 -15
There y = 5
So to answer you question, 12 circles plus 5 squares =
12x + 5y = 12(3) + 5(5) = 36 + 25 = 61 cents
hope this helps
I need help ASAP!!!! BRAINLIEST!!!!
Answer:it is A or D
Step-by-step explanation:
Hey, can someone please help me? I’m pretty sure the answers are B and D but I just wanna make sure.
Answer:
yes b and d
Step-by-step explanation:
Please help me with this???
Answer:
X=3
Step-by-step explanation:
Since all the sides of a square are equal, hence;
5x-2 = x+10
Collect like terms
5x-x = 10+2
4x =12
X = 12/4
X =3
Hence the value of x is 3
Find the value of each trigonometric ratio.
From what i understand from the picture is there is a right angle triangle given with the hypotenes being 37, base being 12 and the perpendicular is 35.
we need to determine the value or Cos x
Easy way to remember which value to out where is
sinx=p/h -----> some people have
cosx=b/h ----> curly brown hair
tanx=p/b -----> through proper brushing
learned this is 8th grade in collage right now still comes in handy
we need cosx so we will use the second formula
[tex]cosx=\frac{b}{h} \\\cosx=\frac{12}{37} \\x= cosx^{-1} (\frac{12}{37})\\[/tex]
which can then be simplified using a calculator
x= 71.1 degree
for this question from what i understand is the answer is cos x = cos (12/37)
no links please
Given f(x) = 1/2x - 3, what is the value of
f(0)
f(11)
f(21)
Rewrite each fraction with a denominator of 10 7/2= 3/5=
Answer:
7/2 = 35/10
3/5 = 6/10
Step-by-step explanation:
To get a common denominator of 10, simply multiply the current denominator by any number to equal 10. The first fraction has a denominator of 2. If we divide 10 by 2, we get the answer 5. This means 2 can be multiplied by 5 to get a denominator of 10. However, what we do to the denominator we must also do to the numerator (multiply by 5).
7/2
7 × 5 / 2 × 5
35/10
3/5
3 × 2 / 5 × 2
6/10
Answer:
7/2 = 35/10
3/5 = 6/10
Step-by-step explanation:
[tex]\frac{7}{2}\cdot \frac{5}{5}=\frac{35}{10}[/tex]
[tex]\frac{3}{5}\cdot \frac{2}{2}=\frac{6}{10}[/tex]
Can someone help me? I am stuck on this question I would mean the world if u helped me! and tysm for the people who helped me!
HELP! WILL GIVE BRANLIEST!
Answer:
x=16 would be the angle measures.
Find the area of the figure to the nearest tenth
A. 99.0 in.
B. 31.5 in.
C. 11.0 in
D. 155.5 in.
Answer:
155.5 is the answer
Step-by-step explanation:
Answer:
The correct answer is A) [tex]99.0 \ in.^{2}[/tex]
Step-by-step explanation:
Just took the test
hope this helps :)
Jeremy drew a figure that is parallelogram but not a rectangle
Answer:
2 acute angles and 2 obtuse angles (D)
2 pairs of parallel sides
The sum of two numbers is 59. The larger number minus the smaller number is 3. Find the numbers.
Answer:
The 2 numbers are 32 and 27.
Step-by-step explanation:
32 plus 27 equals 59.
32 minus 27 equals 3.
So, the answer is 32 and 27.
Hope this helps! :)
*giving brainiest to the first correct answer. Write the equation of the line graphed.
Answer:
The equation of the line is x = 2
Answer:
x = 2
Step-by-step explanation:
When you are given a straight line whether it's horizontal or vertical on a graph and is told to write it as an equation,
it can be a horizontal line, y = the number the line is on from the y-axis
or a vertical line, x = the number the line is on from the x-axis.
In this case you have a vertical line so the equation would be
x = the number the line is on from the x-axis, which is 2 so your final answer would be
x = 2
Hi help no link pls and ty
Answer:
Unit
Step-by-step explanation:
Elsa received a $90 gift card for a coffee store. She used it in buying some coffee that cost $7.54 per pound. After buying the coffee, she had $44.76 left on her card. How many pounds of coffee did she buy?
Answer:
6 pounds of coffee
Step-by-step explanation:
You take $90-$44.76=$45.24. Then you divide $45.24 by $7.54 then you get 6 pounds of coffee.
answer these plssssssssssssssssssssss
Answer:
15: Yes, no, yes, yes, no; 16A: C = ($0.29)X + ($1.45)Y + ($2.50)Z; 16B: Yes
Step-by-step explanation:
For question 15: We need to multiply the widths and lengths given to see if they equal the area we are trying to achieve. Therefore, some of them work, and some do not.
For question 16:
Part A: We'll set a variable for the number of each supply she can buy. Pencils will be represented by X, pens by Y and Notebooks by Z, and we'll represent total cost by C. The total cost will therefore be represented by C = ($0.29)X + ($1.45)Y + ($2.50)Z.
Part B: We'll plug the numbers of items she wants to buy into our formula and see if it comes out to less than $20. So in this case C = ($0.29)(3) + ($1.45)(4) + ($2.50)(2). Therefore, C = $11.67, which is less than $20, so she can afford her school supplies.
You pick a card at random. 5 6 7 8 What is P(divisor of 8)? 11% 83% 25%
Answer:25%
Step-by-step explanation:
You have a 25% (1 in 4) to pick 8
Julie made some hot chocolate by mixing 1 1/4 cups of milk with 1/2 tablespoons of cocoa. How many cups of milk Julie uses for 1 tablespoon of cocoa?
Answer:
2 2/4
Step-by-step explanation:
Since 1/2 of tablespoon of coca can make 1 1/4 cup of milk...
1 1/4 + 1 1/4 = 2 2/4
A) 96
B) 59
C) 128
D) 102
WHOEVER ANSWERS FIRST I WILL GIVE BRAINLYIST
Answer:
Vertex v corresponds to vertex A
/_ S corresponds to /_ E
Step-by-step explanation:
After doing a rotation, reflection and translation, the sides will all match up and you'll see it then.
The probability that it will be warmer today than it was yesterday is 0.1.
The probability that it will be colder today than it was yesterday is 0.7.
a .What is the probability that it will not be colder today than it was yesterday?
b What is the probability that it will not be warmer today than it was yesterday?
Answer:
a) 30% probability that it will not be colder today than it was yesterday
b) 90% probability that it will not be warmer today than it was yesterday
Step-by-step explanation:
In this question, we have that:
0.1 = 10% probability it will be warmer today than yesterday.
0.7 = 70% probability it will be colder today than yesterday.
a .What is the probability that it will not be colder today than it was yesterday?
70% probability it will be colder, so 100 - 70 = 30% probability that it will not be colder today than it was yesterday.
b What is the probability that it will not be warmer today than it was yesterday?
10% probability it will be warmer today than yesterday, so 100 - 10 = 90% probability that it will not be warmer today than it was yesterday
Which is the best type of graph to show the number of jellybeans eaten by each child at a summer camp?
A. pictograph
B. stem and leaf plot
C.double bar graph
D. line graph
Answer:
A. Pictograph
Step-by-step explanation:
Because this graph has a row for each kid so it would show what they want you to
Find the standard deviation. Round to the nearest tenth.
72, 35, 46, 89, 55, 80, 27, 24, 86
A. 7.1
B. 27.3
C. 24.1
D. 25.5
Will give brainliest for correct answer
Answer:
A function is a rule that assigns to each input exactly one output.
Step-by-step explanation:
If you have more than one of the same inputs for multiple outputs, it would create a vertical line at somepoint on your line.
Answer:
The correct answer is "a rule that assigns to each input exactly one output".
Step-by-step explanation:
In mathematics, a function is a binary relation between two sets that associates to each element of the first set exactly one element of the second set. Typical examples are functions from integers to integers, or from real numbers to real numbers.
Will give brainliest for correct answer
Answer:
a and c
Step-by-step explanation:
