Answers
Answer:
Step-by-step explanation:
1). x² - 8x
To convert this expression into a perfect square trinomial,
x² - 2(4x) + 4² = (x - 2)²
Therefore , 4² = 16 should be added.
Option (4) is the answer.
2). x² + 2x = 3
x² + 2(1)(x) = 3
x² + 2(1)(x) + 1 = 3 + 1 [By adding 1 on both the sides]
(x + 1)² = 4
x + 1 = ±2
x = -3, -1
Option (1) is the answer.
3). 3x²- 18x = 21
x² - 6x = 7
x² - 2(3x) = 7
x² - 2(3x) + 3² = 7 + 3²
(x - 3)² = 7 + 9
(x - 3)² = 16
x - 3 = ±4
x = -1, 7
Related Questions
Help please I’m not good in msth
Answers
Answer:
Q ' (3,4)
Step-by-step explanation:
When we reflect across the x axis, the y coordinate becomes -y
Q (3,-4) becomes Q' (3,- -4)
Q ' (3,4)
Simplify the expression: (3 − 7i)(2 − 5i)
Answers
Answer:
( 3 - 7i) • ( 2 - 5i) = ( - 29 - 29i)
Step-by-step explanation:
The formula is :
(a+bi) • (x+yi) = ax+by•i^2+(ay+bx)i
and since i^2 = -1 it can be written as :
ax - by + (ay + bx) i
( 3 - 7i) • ( 2 - 5i) =
( - 29 - 29i)
Answer:
—29 - —29i
Step-by-step explanation:
Make x the subject of h = 4(x + 3y) + 2
You may use the flowchart to help you if you wish.
Answers
Answer:
x = {(h-2)/4} -3y
Step-by-step explanation:
Here, we want to make x the subject of the formula
h = 4(x + 3y) + 2
h-2 = 4(x + 3y)
divide both sides by 4
(h-2)/4 = x + 3y
x = (h-2)/4 -3y
Find the common difference of the arithmetic sequence 13, 9, 5,...
Answers
Answer:
it goes down by 4 every number
A diagram of a swimming
pool is below. The width of
the pool is 25 m, find the
length of the actual pool?
7.5 cm
15 cm
Answers
7.5×2 = 15
25×2 = 50
Find the mean of the given data,
5.6, 5.2, 4.6, 4.9, 5.7, 6.4
Answers
Answer:
5.4
Step-by-step explanation:
5.6 + 5.2 + 4.6 + 4.9 + 5.7 + 6.4 = 32.4
32.4 / 6 = 5.4
Learning Task 3
Solve the word problems
1. The sides of the quadrilateral are consecutive numbers. If the perimeter is 160,
how long is each side?
2. Inzo is 10 years older than Migz. Five years ago Migs is one-third as old as
Inzo. What are their present ages?
3. An express train travels 100 kph from station A to station B. A local train
travelling at 45 kph, takes 45 minutes longer for the same trip. How far apart
is station A from station B.
4. The sum of two consecutive even integers is less than 60 but greater than 24
Find at least 3 pairs of numbers
5. The perimeter of the square is less than 152 m. Find the possible length of t
sides of the square.
Answers
Answer:
Step-by-step explanation:
Conflict is
a.
the deliberate attempt to control a person by force, to oppose someone, or to harm another person.
b.
when two or more people or groups work together to achieve a goal that will benefit more than one person.
c.
a state of balance between cooperation and conflict.
d.
the division of labor.Conflict is
a.
the deliberate attempt to control a person by force, to oppose someone, or to harm another person.
b.
when two or more people or groups work together to achieve a goal that will benefit more than one person.
c.
a state of balance between cooperation and conflict.
d.
the division of labor.Conflict is
a.
the deliberate attempt to control a person by force, to oppose someone, or to harm another person.
b.
when two or more people or groups work together to achieve a goal that will benefit more than one person.
c.
a state of balance between cooperation and conflict.
d.
the division of labor.Conflict is
a.
the deliberate attempt to control a person by force, to oppose someone, or to harm another person.
b.
when two or more people or groups work together to achieve a goal that will benefit more than one person.
c.
a state of balance between cooperation and conflict.
d.
the division of labor.Conflict is
a.
the deliberate attempt to control a person by force, to oppose someone, or to harm another person.
b.
when two or more people or groups work together to achieve a goal that will benefit more than one person.
c.
a state of balance between cooperation and conflict.
d.
the division of labor.Conflict is
a.
the deliberate attempt to control a person by force, to oppose someone, or to harm another person.
b.
when two or more people or groups work together to achieve a goal that will benefit more than one person.
c.
a state of balance between cooperation and conflict.
d.
the division of labor.Conflict is
a.
the deliberate attempt to control a person by force, to oppose someone, or to harm another person.
b.
when two or more people or groups work together to achieve a goal that will benefit more than one person.
c.
a state of balance between cooperation and conflict.
d.
the division of labor.
HII!! 8TH GRADE MATH
PLS HELPP
Answers
Answer:
112 degrees
Step-by-step explanation:
x = to the 112 degree angle
Hope that helps!
Vertical angles are always congruent - they always have the same angle measure. If one angle is 40 degrees, the vertical angle across from it will also be 40 degrees.
He is ordering the pizzas from a place that has 12 different topping options.
7 options are vegetarian and 5 are meats.
Write the ratio of vegetarian options to the total of options in three different ways.
Answers
Answer:
124
Step-by-step explanation:
1234
do y’all get it now?
How do you solve this ANSWER QUICK!!!
Answers
So 8.2 x 7.98 = 65.436
2.8 x 0.05 = 1.40
6.25 x 10.0 = 62.50
Answer:
3.07 x 9.4 = 28.858
8.2 x 7.98 = 65.436
2.8 x 0.05 = 0.14 (put the zero in too it's important
6.25 x 10.4 = 65
The Code:
8415
I think
Write 0.4% as a fraction or mixed number in simplest form.
Answers
Answer:
4/1000
Step-by-step explanation:
Write an exponential function whose graph passes through the points (0,-2) and (2,-50)
Answers
Answer:
first sub in (0,-2) to get
-2 = ab^0, but b^0 = 1
so a=-2
so far we have
y = -2b^x
now use the other point (2,-50)
-50 = -2(b^2)
b^2 = 25
b= ±5
however in exponentional equations the base is usually positve, so now you have
y = -2(5^x)
sub in x=-2 and you got it.
Step-by-step explanation:
hope it helps..
Use the exchange rate £1 = €1.15 to convert €23 into £.
Answers
common denominator for 3/5 and 1/2
Answers
Answer: 10
Step-by-step explanation:
To find a common denominator, simply multiply the denominator and numerator of one fraction by the denominator and numerator of the other. Then repeat.
3*2/5*2 = 6/10
1*5/2*5=5/10
As you can see, the denominator of both fractions is 10.
Hope it helps and lmk if you need further explanation :)
PLS HELP. CIRCUMFERENCE QUESTION! WILL GIVE BRAINLIEST
Answers
Answer:
L = 24,873.6 miles
Step-by-step explanation:
Length of the Circumference
Given a circle of radius r, the length of the circumference, or line surrounding the shape is:
The Earth has a diameter of 7,917.5 miles. The radius is half the diameter:
r=7,917.5/2=3,958.75 miles
Assuming a plane flies around the equator at ground level, the distance it would travel is:
L = 24,873.6 miles
Mr. McMurray wants to buy a new car. Last year the sticker price on the model he wanted was $12,800. This year the price is $14,720. By what percent did the price increase during the past year?
Answers
Answer:
15% increase
Step-by-step explanation:
It increases by $1920 which is 15%
Identify whether the following numbers are rational or irrational i) 0.11011001100011...........
ii) 2.56565656...........
Answers
Answer:
i) is irrational and ii) is rational
Step-by-step explanation:
i) does not keep a consistent pattern. If it was .11011011011.... it would be a rational number, but since it keeps changing its pattern it would be considered irrational. ii) is rational because it has a consistent pattern that doesn't change.
Step-by-step explanation:
0.11011001100011...............is your answer right answer
Lines s and t are parallel. The slope of line s is −3/2 . What is the slope of line t ?
Answers
Parallel lines have the same slopes.
So if line s has a slope of -3/2, line t also has a slope of -3/2.
I need help yall. Brainliest for the first person who actually shows their work.
30 pts btw
just solve one of them, so ik how to do the rest
Answers
kwasi thought of a number, multiplied it by7/2 and added 16 to the results.if the final answer was 30.what number did he think of
Answers
Answer:
4
Step-by-step explanation:
represent the number he thought of with x[tex] \frac{7}{2} x + 16 = 30[/tex]
multiply through with the LCM which is 2[tex]2 \times \frac{7}{2}x + 16 \times 2 = 30 \times 2 [/tex][tex]7x + 32 = 60 [/tex][tex]7x = 60 - 32[/tex][tex]7x = 28[/tex][tex] \frac{7x}{7} = \frac{28}{7} [/tex][tex]x = 4[/tex]find the product
(y + 9) (y-9)
Answers
Answer: it's y squared by 2-81
Step-by-step explanation:
Answer:
hope this is what u want
hope u find it useful
Find the value of x in the triangle shown below.
10.4
62°
12
12
Answers
Two of the sides are the same (12) so the two angles at the top will also be the same, so you have two angles that are 62.
62 + 62 = 124
The three angles of a triangle need to equal 180.
X = 180-124 = 56
The answer is x = 56
An otter weighs 7.4 kilograms. How many grams does the otter weigh? Use the number of zeros of the product when multiplying a number by a power of 10 to help you.
740 grams
7,400 grams
74,000 grams
74 grams
Answers
Answer: 7,400grams
Step-by-step explanation: I hope this helps btw can u follow me and mark me as brainiest?
Can anyone help me with this asap !!!
Answers
Answer:
a is for adults , it's starts at 10
b is for children ,it's starts at 5
Hi! Is there anyone good with finding the surface area of something? If so, please comment. If you do help me, I will give you 5 star every time you help.
Answers
God bless you
how do scale drawings and actual measurements represent proportional relationship
Answers
Answer:
Step-by-step explanation:
For exapmple: scale is 1:2 on a map
1 cm on the map is 2 cm in real life.
1 m on the map is 2 m in real life.
the proportion on the map is multiplied by the second number on the scale
In ΔKLM, the measure of ∠M=90°, the measure of ∠L=75°, and MK = 54 feet. Find the length of LM to the nearest tenth of a foot.
Answers
Answer:
14.5 feet
Step-by-step explanation:
Two county fairs are nearby, and Marc is trying to determine which one would be best to attend. Both fairs sell tickets for rides, food, games and more. Polk County Fair is charging a $10 entry fee, and each ticket costs $2.50. Pinellas County Fair isn't charging an entry fee, but each ticket costs $3.
Answers
Answer:
Step-by-step explanation:
It depends on how many tickets Marc will need.
For t tickets, Polk costs 10+2.5t and Pinellas costs 3t.
10+2.5t = 3t
t = 20
If Marc needs fewer than 20 tickets, Pinellas is the more economical choice.
I only have a few minutes. Help? 40 points
Answers
Step-by-step explanation:
<R and <T are vertical angles.
<U and. <Z are corresponding angles.
<S and <Z are alternate exterior angles.
<T and <W are alternate interior angles.
Hope it will help :)
l=prt
you have to solve for t
Answers
Answer:
T is equal to I divided by pr. [tex]t=\frac{I}{pr}[/tex]
Step-by-step explanation:
This is the equation for interest.
I is interest.
P is the principal
r is the interest rate
t is the time in years
you have to isolate for t.
Because multiply p times r times t, divide both sides by pr due to the fact that division is the inverse operation of multiplication
Then you are left with t= i divided by pr.
hope this helps
