Answer:
x = 5
Step-by-step explanation:
distribute 4 into (x - 8)
=> 4x - 32 + 2 = -10
combine like terms
=> 4x - 30 = -10
add 30 on both sides to isolate and solve for x
=> 4x = 20
divide both sides by 4
=> x = 5
Answer:
=5
Step-by-step explanation:
4(−8)+2=−10
4−32+2=−10
4−30=−10
4−30+30=−10+30
4=20
44=204
=5
hope i helped
If x = -3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the
discriminant of the equation?
The discriminant is negative.
O The discriminant is -3.
O The discriminant is 0.
The discriminant is positive.
Viewers/AssessmentViewer/Activit..
Answer:
The discriminant is 0
Step-by-step explanation:
If the discriminant of a quadratic equation equals 0, it means 2 identical real roots existed. (x = -3 is the only x-intercept of the graph of a quadratic equation)
Can someone explain what I did wrong? I’m very confused
2n.
3 in.
3 in.
Surface Area = [?] in.2
please help literally nobody can seem to get this
9514 1404 393
Answer:
21 in²
Step-by-step explanation:
The net consists of a square and 4 triangles. The relevant dimensions of each are given, so the appropriate area formulas can be used.
Area of one triangle:
A = 1/2bh
A = 1/2(3 in)(2 in) = 3 in²
Area of the square:
A = s²
A = (3 in)² = 9 in²
__
Total net area (surface area of the pyramid):
square area + 4 × triangle area
9 in² + 4 × 3 in² = 21 in² . . . . surface area
Answer:
21 in.
Step-by-step explanation:
4(1/2 b X h) + 3 X 3
4(1/2 3 X 2) +9
4(1/2 X6) +9
4(3) +9
12+9
21
Find the sum of -52 and -26.
Step-by-step explanation:
-52 + -26 = -78
hope this helps
Which expression is equivalent to the expression 6(-2n + 7) - 3(5n + 9)?
I’ll give BRAINLY I just need help
Answer:
[tex]3x - 8 = 2x + 12 \\ x = 12 + 8 = 20 \\ 180 - 2x - 12 = y \\ y = 180 - 40 - 12 = 128[/tex]
Which prism has the greatest volume?plzzz emergency thank you so much!!!
Answer:
prism R
Step-by-step explanation:
I am bad at graphs, please help
please help I'll give brainliest
Answer:
57.5
Step-by-step explanation:
2x+5=120
2x=120-5=115
x=115/2=57.5
Ashley had $14.80. She spent $2.60 on lunch, then
brother gave her the $6 he owed her. What does she
now?
$11.40
$6.20
$18.20
$23.40
Answer: $18.20
Step-by-step explanation:
14.80-2.60 is 12.20.
her brother gives her 6 dollars
12.20+6 is 18.20, which that is the answer.
Answer:
18.20
Step-by-step explanation:
I got this because she got 6 making her total 20.80 then I subtracted what she spent for lunch
Find the measure of <2.
Answer:
Angle 2 would be 78 degrees because of alternate exterior angle property.
A hair stylist offers clients haircuts and coloring treatments . On Monday she did 5 haircuts and 3 color treatments and earned $340. On Wednesday , she did 2 haircuts and 6 color treatments and earned $400 Write and solve a system of equations to determine the amount the stylist earns for each haircut h and each color treatment , c System
Answer:
16.00
Step-by-step explanation:
Expenses that are incurred directly or entirely in connection with the selling of merchandise are classified as
Question 6 of 10
What is the midpoint of the segment shown below?
10 --
(3,5)
O A. (7)
(2.2)
B. (5,7)
10
O C. (5.3)
O D. (7/ 2 )
SUBMI
Answer:
(2.5 , 3.5)
Step-by-step explanation:
We can use the midpoint formula . Here the points are , (2,2) and (3,5) .
• Using Midpoint Formula :-
⇒ M = { (x1 + x2)/2 , (y1 + y2)/2 }
⇒ M = ( 2+3/2 , 5+2/2 )
⇒ M = ( 5/2 , 7/2 )
⇒ M = ( 2.5 , 3.5 )
Hence the midpoint is (2.5 , 3.5)Is the equation linear?
(a) y = -x^2 +7
(b) y=4x^3
(C) y=3^x
(d) y = 2x-6
Answer:
a. ya
b. ya
c. ya
d. ya
Step-by-step explanation:
if you put them you never cross the line
Lucy bought 5 pounds of flour for $3.
How many dollars did she pay per pound of flour?
Answer:
15
Step-by-step explanation:
5*3=15
Please HELPPP!!!!
Ashly makes a model of a square pyramid. A diagram
of the model is shown. What is the volume of her model
in cubic meters?
Answer:
33 m
Step-by-step explanation:
will give brainliest <3! please help! no fake answers please
Answer:
input 1 output 1 ×7 =7
input 2 output 2 ×7 =14
input 3 output 3 ×7=21
input 4 output 4×7=28
Answers are 7, 14, 21 and 28
What is the volume and cubic feet of a rectangular prism with a base of 24 square feet and a height of 16 feet
Answer:
126
Step-by-step explanation:
The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who is 30-49 years old is chosen at random, what is the probability that they have completed a bachelor's degree and no more? Round your answer to the nearest thousandth.
Answer:
If a resident who is 30-49 years old is chosen at random, the probability that they have completed a bachelor's degree and no more is 29.13%.
Step-by-step explanation:
Taking into account the educational table provided, if a resident who is 30-49 years old is chosen at random, to determine what is the probability that they have completed a bachelor's degree and no more the following calculation must be performed:
30-39 Bachelor's degree = 1576
40-49 Bachelor's degree = 443
30-39 Total = 4062
40-49 Total = 2869
4062 + 2869 = 100
1576 + 443 = X
6931 = 100
2019 = X
2019 x 100/6931 = X
201900/6931 = X
29,129 = X
Therefore, if a resident who is 30-49 years old is chosen at random, the probability that they have completed a bachelor's degree and no more is 29.13%.
Answer:
0.296
Step-by-step explanation:
Have completed bachelor’s degree: 1008
Age 30-39: 3407
Probability : [tex]\frac{1008}{3407}[/tex]
≈0.296
Please help me ASAP
Please help me
Answer:
The base of triangle b is 8 inches
QUICK BEING TIMED
If 2 inches on a map represents 25 miles, how many inches would represent 225 miles?
Answer:18
Step-by-step explanation:
18 inches represent 225 miles.
What is Proportion?Proportions are defined as the concept where two or more ratios are set to be equal to each other.
Suppose we have two ratio p : q and r : s.
If both these ratios are proportional, then we can write it as p: q : : r : s.
This is same as p : q = r : s or p/q = r/s
Given that,
2 inches on a map represents 25 miles.
We have to calculate the value of inches that correspond to 225 miles.
Let x be the unknown value of inches that correspond to 225 miles.
Using proportional concept,
2 : 25 = x : 225
This can also be written as,
2 / 25 = x / 225
Cross multiplying,
2 × 225 = 25 x
x = (2 × 225) / 25
x = 18
Hence the value of the unknown inch is 18 inches.
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I NEED HELP PLS I need the base and volume of this pic should be above pls help
Answer:
Area of the base=16m squared
Volume of the figure =21m cubed
In 2002 the population of schoolchildren in a city was 90,000. The population decreases at a rate of 5% per year. What will be the population of school children in 2010?
Answer:
40,000 Not sure but i finish unit and got all a's and b's
Step-by-step explanation:
Answer:
59708Step-by-step explanation:
Initial population = 90000Decrease rate = 5% or 0.05 timesTime = 2010 - 2002 = 8 yearsPopulation of children in 2010:
P = 90000*(1 - 0.05)^8 = 59708 (rounded to the whole number)Morgan bought a sofa for $216.00. The finance charge was $25 and she paid for it over 15 months.
Use the formula Approximate APR =(Finance Charge÷#Months)(12)Amount Financed
to calculate her approximate APR.
Round the answer to the nearest tenth.
9.4%
9.3%
1.2%
1.1%
Answer:
9.3%
Step-by-step explanation:
Morgan's approximate APR is approximately 1.0%.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
Using the given formula:
Approximate APR = (Finance Charge ÷ Months) x 12 / Amount Financed
We know that the amount financed is the total cost of the sofa minus the finance charge, which is:
Amount Financed = $216.00 - $25.00 = $191.00
We also know that the finance charge was $25.00 and she paid for it over 15 months, so:
Finance Charge ÷ Months
= $25.00 ÷ 15
= $1.67
The approximate APR is:
Approximate APR = ($1.67 x 12) ÷ $191.00 = 0.1393
Rounding this to the nearest tenth gives us 0.1, which is equivalent to 1.0% as the nearest percentage.
Therefore,
Morgan's approximate APR is approximately 1.0%.
Learn more about expressions here:
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please help me with this !!
Answer:
Answer Below V
Step-by-step explanation:
1. They must be adjacent
2. They have to be connected with the line segment Z
Find volume of figure in terms of x
Answer:
6x^3+3x^2
Step-by-step explanation:
Volume is b*h*w.
So, we have (3x)(x)(2x+1).
Simplifying the parentheses, we get: 3x*x*(2x+1).
3x*x= 3x^2.
Now we can simplify the other parentheses.
3x^2(2x+1) will be 6x^3+3x^2, because (3x^2)(2x)+(3x^2)(1).
Thus, we get 6x^3+3x^2
Janice has just bought a new pack of levels in her favorite game, Candy Crush. She knows that she can win a new level on the first try 25% of the time, and that whether or not she beats one level on the first try will not have any effect on whether or not she beats a different level on the first try. Janice plays through 4 levels. What is the probability that she beats all 4 levels on the first try
Answer:
0.0039 = 0.39% probability that she beats all 4 levels on the first try.
Step-by-step explanation:
For each level, there are only two possible outcomes. Either she can win the new level on the first try, or she cannot. The probability of winning a level on the first try is independent of any other level. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
She knows that she can win a new level on the first try 25% of the time.
This means that [tex]p = 0.25[/tex]
Janice plays through 4 levels.
This means that [tex]n = 4[/tex]
What is the probability that she beats all 4 levels on the first try?
This is P(X = 4). So
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 4) = C_{4,4}.(0.25)^{4}.(0.75)^{0} = 0.0039[/tex]
0.0039 = 0.39% probability that she beats all 4 levels on the first try.
Find the area of the figure. Round your answer to the nearest tenth :)
Answer:
6
Step-by-step explanation:
You draw two marbles without replacement from a bag containing four red marbles, two yellow marbles, and five blue marbles
Step-by-step explanation:
your bigest chance is that youll draw a red and blue