Answer:
8x2+4x+16
Step-by-step explanation:
first you would place as so
8x2-5x+9 - (-9x-7)
you would then change question to addition but do this you would have to switch the signs for the one in the parenthisis. it would look like 8x2-5x+9 + 9x+7
You then add like terms and put them into standard form.
hope this helps!!
The ratio of boys to girls in a classroom is 15 to 12. What is the ratio of boys to total students in the classroom.
Answer:
Step-by-step explanation:
15 boys + 12 girls = 27 students
15:27 = 5:9
First, add to find total number of students.
15 + 12 = 27
Second, create the new ratio.
15 to 27
Best of Luck!
How do you do diamond problems
Write an equation that represents the line.
Use exact numbers.
Answer:
y=(7/5)x + 34/5
Step-by-step explanation:
All straight lines generally follow the equation format of: y=mx+c
Where m is the slope/gradient of the line, and c is a constant, the y-intercept, the y value when x=0.
To start, we need to find the slope, which we do by dividing the rise of the line by the run, that is the difference between the y value of two points divided by the different between the x value of two points.
We can use the two given points on the graph: (-7,-3) and (-2,4).
The rise is 7 because 4-(-3)=7, and the run is 5 because -2-(-7)=5.
Therefore the slope is 7/5.
so our equation so far is:
y=(7/5)x + c, (It is positive because the line is 'going upwards'.)
Now to find the c, we can just substitute in a pair of coordinates, we can use (-2,4):
4= (7/5)(-2) + c
4 = -14/5 + c
4 + 14/5 = c
c= 34/5
Therefore our full equation is:
y=(7/5)x + 34/5
Hope this helped!
The highest ever recorded temperature on earth was 136°F in the US and the lowest was − ° 129 F in Antarctica. What is the difference of these temperatures recorded on Earth?
Answer:
136 + 129= 265
Step-by-step explanation:
when you're finding the difference and one number is positive and the other is a negative number you will add the negative instead of add them together so you would 129 to 136 which would equal 265. this rule applies to the opposite too. if both numbers are positive, then you would subtract them.
Please help, solve for x and n
Answer:
1. [tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = 1}}}}}[/tex]
2. [tex] \boxed{ \bold{ \huge{ \boxed{ \sf{n = - 5}}}}}[/tex]
Step-by-step explanation:
1. [tex] \sf{ \frac{6}{x + 1} = \frac{3}{x} }[/tex]
Do cross multiplication
[tex] \dashrightarrow{ \sf{6x = 3(x + 1)}}[/tex]
Distribute 3 through the parentheses
[tex] \dashrightarrow{ \sf{6x = 3x + 3}}[/tex]
Move 3x to left hand side and change it's sign
[tex] \dashrightarrow{ \sf{6x - 3x = 3}}[/tex]
Collect like terms
[tex] \dashrightarrow{ \sf{3x = 3}}[/tex]
Divide both sides by 3
[tex] \dashrightarrow{ \sf{ \frac{3x}{3} = \frac{3}{3} }}[/tex]
Calculate
[tex] \dashrightarrow{ \sf{x = 1}}[/tex]
The value of x is 1
---------------------------------------------------------------------
2. [tex] \sf{ \frac{2}{6} = \frac{2n + 8}{n - 1}} [/tex]
Do cross multiplication
[tex] \dashrightarrow{ \sf{2(n - 1) = 6(2n + 8)}}[/tex]
Distribute 2 through the parentheses
Similarly, distribute 6 through the parentheses
[tex] \dashrightarrow{ \sf{2n - 2 = 12n + 48}}[/tex]
Move 12n to left hand side and change it's sign
Similarly, move 48 to right hand side and change it's sign
[tex] \dashrightarrow{ \sf{2n - 12n = 48 + 2}}[/tex]
Collect like terms
[tex] \dashrightarrow{ \sf{ - 10n = 48 + 2}}[/tex]
Add the numbers : 48 and 2
[tex] \dashrightarrow{ \sf{ - 10n = 50}}[/tex]
Divide both sides by -10
[tex] \dashrightarrow{ \sf{ \frac{ - 10n}{ - 10} = \frac{50}{ - 10} }}[/tex]
Calculate
[tex] \dashrightarrow{ \sf{n = - 5}}[/tex]
The value of n is -5 .
Hope I helped!
Best regards! :D
I need to find the slope of the line
Answer:
4/1
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
because if you go from one point to the next, it is 4 up and 1 across, therefore 4/1, or 4 :)
Write the equation of the line that is parallel to the line y = 3/2 x + 5 and passes through the point (4,1).
Answer:
m=3/2
y-1=3/2(x-4)
y-1=3/2 x-6
y=3/2 x -5
Step-by-step explanation:
slope of tangent line is equal to slope of line that parallel
(WILL MARK BRAINLIEST PLEASE HELP!) Rule for reflecting 90, 180, 270, and 360 degrees clockwise (reflection not rotating please)
Answer:
Rotation of 90° (x, y) → ( ‐ y, x )
Rotation of 180° (x, y) → ( ‐ x, ‐ y )
Rotation of 270° (x, y) → ( y, ‐ x )
idk 360...
black panther ran 567.6km to the east 2.3 hours then turned around and ran 221.8km to the west in 1.2 hours. what was his average velocity during the trip in km/h?
Answer:
98.8 km/h
Step-by-step explanation:
Given that:
Distance traveled towards east, [tex]D_1[/tex] = 567.6 km
Time taken towards east, [tex]t_1[/tex] = 2.3 hours
After turning back:
Distance traveled towards west, [tex]D_2[/tex] = 221.8 km
Time taken towards west, [tex]t_2[/tex] = 1.2 hours
To find:
Average Velocity during the trip in km/h = ?
Solution:
First of all, let us consider the image attached in the answer area:
Let the black panther runs to point I from G and the turns back to point H.
GI = 567.6 km
IH = 221.8 km
Formula for Average Velocity is given as:[tex]\text{Average Velocity= }\dfrac{\text{Displacement}}{\text{Total Time Taken}}[/tex]
Here, Displacement will be GI - IH = [tex]D_1-D_2[/tex] =567.6 - 221.8 = 345.8 km
Total time taken = t_1+t_2 = 2.3 + 1.2 = 3.5 hours
[tex]\text{Average Velocity= }\dfrac{345.8}{3.5} = \bold{98.8\ km/h }[/tex]
The answer is:
Average Velocity = 98.8 km/h
What is the solution to -4y=28 (please explain)
Answer:
y=-7
Step-by-step explanation:
when you multiply a negative by a negative, it turns into a positive. -4 x -7 will equal 28, so y=-7, hope this helps
4x - 10=-2
Solve for x
Answer: x=2
hope this helps!
on a random Monday in the spring, 95% of students are present at school. if there are 589 students present, then how many students are enrolled?
Answer:
620
Step-by-step explanation:
95% × 620 =
(95 ÷ 100) × 620 =
(95 × 620) ÷ 100 =
58,900 ÷ 100 =
589;
Step 1: 4r +5 = 7
Step 2: 4x = 2
1
Step 3: x = }
1 2
The property that was used in step 1 was the
The property that was used in step 2 was the
The property that was used in step 3 was the
Answer:
1- r=.5
2- x=.5
Step-by-step explanation:
sorry my handwriting is bad
3x-2 is less than or equal to -20
3x - 2 ≤ -20
Add 2 to both sides:
3x ≤ -18
Divide both sides by 3:
x ≤ -6
State a rule for multiplying and dividing unlike sign integers
Answer:
just multiply the absolute values and make them positive or negative
Step-by-step explanation:
for example:
2×2=4
-2×2=-4
Answer:
just multiply the absolute values and make them positive or negative
Step-by-step explanation:
for example:
2×2=4
-2×2=-4
Find the least common multiple of 3, 6 and 15
Answer: 30
Step-by-step explanation:
*Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, ..., 30
* Multiples of 6: 6, 12, 18, 24, 30
* Multiples of 15: 15, 30
four and five thousand three ten-thousandths
Write the number
Answer:
4.0503
Step-by-step explanation:
Identify the converse of the conditional statement below. If it is a shirt, then it has sleeves. Sleeves are found on shirts. O Shirts have sleeves. If it is a shirt, then it does not have sleeves. If it has sleeves, then it is a shirt.
5.4 x 28.7 =
What is the answer
Answer:
154.98
Step-by-step explanation:
Answer:
155(estimated to 3 s.f) 154.98(exact value)
Step-by-step explanation:
Very nice question bro
Can you help me with this I don’t know how to do it
Answer:
67,900
Step-by-step explanation:
Move the decimal place 4 spaces to the right.
Answer:
it is for sure 67,900 :)
Step-by-step explanation:
w(n)=n-1; find w-(4)
Answer:5
Step-by-step explanation:
w(n)=4-1
=5
I need a expression for the area of the shaded region.
Answer:
the shaded area= s²-2πr²
Step-by-step explanation:
you have 2 circles
Area of circle=πr²
2 circles=πr²+πr²=2πr²
the area of square=s*s=s²
the shaded area= s²-2πr²
A store purchased an emerald pendant and marked it up 100% from the original cost of
$465. A week later, the store placed the emerald pendant on sale for 20% off. What was the
discount price?
A skier is trying to decide whether or not to buy a season ski pass a daily pass cost $63 a season ski pass cost $350 to scare would have to rent skis with either a pass for $25 per day how many days with the skier have to go skiing in order to make the season pass less expensive than the daily pass
Answer:
um
Step-by-step explanation:
Please help if you can. Mandy used the input and output in this table to write ratios. She concluded that because they are not all equivalent, this is not a proportional relationship. Is she correct? Explain.
Answer:
he last ratio is written incorrectly.
Mandy reversed the input and output in the numerator and denominator.
The correct ratio is 50/10.
The relationship is proportional.
Solve for X. x squared = 49 show your work
Answer:
+ 7 or - 7
Step-by-step explanation:
x^2 = 49
x = (49)^1/2 (1/2 means nothing but square root)
x = + or - 7
I said this answer because you square 7 and -7 and still get 49
If someone can guess whether I live in an apartment condo or house? Also, what floors do I have? 3, 2, and 4. Choose ALSO, I'll mark as brainliest
Answer:
house 3 floors
Step-by-step explanation:
i'm totally guessing i'm most likely wrong
How many intersecting planes are there in a cube?
Answer: a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube is the only regular hexahedron and is one of the five Platonic solids. It has 6 faces, 12 edges, and 8 vertices.
Step-by-step explanation:
Answer:
The cube has nine symmetry planes. Three planes lie parallel to the side squares and go through the centre (picture). Six planes go through opposite edges and two body diagonals. They divide the cube into prisms
I NEED HELP ON THIS!! Solve for y: 3(2x+5)+4y=3(y-2x)+10
Answer:
10
Step-by-step explanation:
Begin with x3 + y3 = 4 . Differentiate both sides of the equation, getting
D ( x3 + y3 ) = D ( 4 ) ,
D ( x3 ) + D ( y3 ) = D ( 4 ) ,
(Remember to use the chain rule on D ( y3 ) .)
3x2 + 3y2 y' = 0 ,
so that (Now solve for y' .)
3y2 y' = - 3x2 ,
.
Help with this math problem 4/3•5/2
Answer:
The answer is 10/3 or 3 1/3
Step-by-step explanation:
Hope this helps