Answer:
B
Step-by-step explanation:
(x-8)^2=(x-8)(x-8)=x^2-8x-8x+64=x^2-16x+64
Answer:
x2 − 16x + 64; is a polynomial
Which system of inequalities has no solution?
Answer:
i think c
Step-by-step explanation:
Annie was earning $12.50 per hour at her job. She recently received a 10% raise. She has also decided she will put 1/5 of her new salary in savings. If Annie worked 40 hours in one week, how much is she putting into savings each week?
Answer:
$110
Step-by-step explanation:
Two identical number cubes are shown in the picture. The edge length of these number cubes is 3 centimeters. What is the combined volume of the two number cubes in cubic centimeters? 27 cm3 9 cm3 18 cm3 54 cm3
Answer:
They are both identical cubes which makes it much easier.
Work out the volume for just one first.
The formula for volume is:
l x w x h
However, since it is a cube, all lengths are the same.
3 x 3 x 3 = 27
Now multiply it by 2 to get the volume of both combined:
27 x 2 = 54.
In short, your answer is 54cm 3
Hope This Helps You!
Good Luck :)
Step-by-step explanation:
When solving the equation, which is the best first step to begin to simplify the equation?
-2(x+3) = -10
02-2)(x+2) = -106-2)
$(-2)(x+ 3) --10-31
o-(x+3) = -10
Answer:
the answer is (x+3)
Step-by-step explanation:
-_-
You have 10 coins in your pocket. Five are Susan B. Anthony dollars, two are Kennedy half-dollars, and three are presidential dollars. You randomly
choose a coin In how many ways can choosing not a presidential dollar occur?
Kennedy
half-dollar
208080
SOLO
*1999
Susan B. Anthony
dollar
WE TRUST
O
Presidential
dollar
There are
ways you can choose not a presidential dollar.
Answer:
Im not sure about this one yet
Step-by-step explanation:
but give me a alittle and I'll be bk right away
Not choosing a presidential dollar can occur in 7 ways
Calculating Number of ways for choice
Given : Total 10 coins - 5 susan anthony dollars, 2 kennedy half dollars, 3 presidential dollars
To calculate : Number of ways through which non presidential dollar can be chosen
It can be calculated using Combination Choices
The dollar chosen is out of 7 dollars - 5 susan anthony dollars & 2 kennedy half dollars, ignoring & excluding the presidential dollars
So, number of ways = 7 c 1
= 7 ways
To learn more about Combinations, refer https://brainly.com/question/20211959?referrer=searchResults
how many terms are in this expression 5b+26t-72
Answer:
3 terms
Step-by-step explanation:
5b+26t-72
Since none of the terms are like terms, we cannot combine them
There are 3 separate terms, 5b, 26t, 72
The length of a basketball court is twice its width. The perimeter is 150 feet. Find the length and width of the basketball court. On your worksheet, solve the question and write your answer below. What is length of the basketball court? What is the width of the basketball court?
Answer: W=25 and L=50
Step-by-step explanation: I first started out with 50, because 50 is half of 100. 50 divided by 2 equals twenty five. Now, I moved on to 100. 100 divided by 2 equals 50. 25+25+50+50=150.
Answer:
The width of the basketball court is 25 feet and the length is 50 feet
Step-by-step explanation:
Equations:
Let's make:
x = width of the basketball court
2x = length of the basketball court
The perimeter of the court is twice the width plus twice the length:
P = 2x + 2(2x)
P = 2x + 4x = 6x
It's known to be 150 feet, thus:
6x = 150
Dividing by 6:
x = 150/6
x = 25 feet
2x = 50 feet
The width of the basketball court is 25 feet and the length is 50 feet
Vrite down the mathematical name of this 3-D shape.

Answer:
cube
cuboid
cylindrical
sphere
cone
Jessica is a custodian at Oracle Arena. She waxes 20 m2 of the floor in 3/5 of an hour. Jessica waxes the floor at a constant rate. At this rate, how many square meters can she wax per hour?
Answer:
33.3m^2
Step-by-step explanation:
If Jessica waxes 20 m^2 of the floor in 3/5 of an hour, then;
20m^2 = 3/5 hr
To get the area that she waxes in an hour
x = 1 hr
Divide both expression
20/x = 3/5
3x = 20 * 5
3x = 100
x =100/3
x = 33.3m^2
Hence she can wax 33.3m^2 in an hour
what is the total area of the figure above ?
Answer:
10*10/2=50
20^2-10^2=100
10*10/2=50
50+50=100
Step-by-step explanation:
Using a table of values, determine the solution to the equation below to the nearest fourth of a unit.
2x-4=3^x+1
A.
x ≈ 3.25
B.
x ≈ 1
C.
x ≈ 2
D.
x ≈ 2.5
Answer: D. x ≈ 2.5
Step-by-step explanation: I circled the intersection in green in this attachment I provided.
As you can see, it's near 2.5 which is correct.
I really hope this is correct. I answered this one with confidence. Good luck on your test btw.
Answer:
D. x ≈ 2.5
Step-by-step explanation:
Every three years the population of one part of Brooklyn is recorded.
In 2014 there was a population of 10,500 people.
From 2014 to 2017 the population increased by 22%.
From 2017 to 2020 the population decreased by 10%.
What was the population of this area in 2020?
Answer:
11,529
Step-by-step explanation:
10500x22%=2310
10500+2310=12810
12810x10%=1281
12810-1281=11529
Answer:
Hello there!
Your question asks to find what was the size of the population in 2017
Answer: 6,721
In order to solve this problem, we're going to need to use the given information in the question in order to find the population in 2017.
Key information:
In 2010, population was 6500
In 2014, population increased by 10% from 2010
In 2017, population decreased by 6% from 2014.
With the information above, we can solve the problem.
We're going to start with 6500 as our starting population.
We know that the population increased by 10% in 2014, so we would multiply 6500 by 1.10.
Step-by-step explanation:
Solve for x if EF = 2x + 7 and FG = 7x –9
help please I'll give brainliest
Answer:
x = 3.2
Step-by-step explanation:
Since, intercepts made by parallel lines on the transversals are in proportion.
[tex] \therefore \frac{AB}{BC} =\frac{EF}{FG}... (1)[/tex]
AB = BC.... (given)
[tex] \implies \frac{AB}{BC} = 1..... (2)[/tex]
From equations (1) & (2)
[tex] 1 =\frac{EF}{FG}[/tex]
[tex] {FG}={EF}[/tex]
Therefore,
7x - 9 = 2x + 7
7x - 2x = 9 + 7
5x = 16
x = 16/5
x = 3.2
Mark plans to save 2.50 each week until he saves 75.00.He uses this equation to represent the number of weeks
Answer:
2.5x = 75
Step-by-step explanation:
Triangle ΔGHI with m∠G = 5°, m∠H = 75° and m∠I = 100°, is reflected across the y-axis to obtain ΔKLM. What is the measure, in degrees, of ∠L?
Answer:
[tex]\angle L = 100^{\circ}[/tex]
Step-by-step explanation:
Given
[tex]\angle G = 5^{\circ}[/tex]
[tex]\angle H = 75^{\circ}[/tex]
[tex]\angle L = 100^{\circ}[/tex]
Required
Determine the measure of L after reflection across x-axis
When a shape is reflected across an axis, only the coordinates of the shapes is affected; the angles remain unaltered.
In other words, the measures of the angle will not change.
Hence:
[tex]\angle L = 100^{\circ}[/tex]
How many ounces of a 19% alcohol solution and a 37% alcohol solution must be combined to obtain 90 ounces of a 24% solution
Answer:
19% alcohol solution = 65 ounces
37% alcohol solution = 25 ounces
Step-by-step explanation:
Let
19% alcohol solution = x
37% alcohol solution = y
x + y = 90 (1)
0.19x + 0.37y = 90*0.24
0.19x + 0.37y = 21.60 (2)
from (1)
x = 90 - y
Substitute into (2)
0.19x + 0.37y = 21.60
0.19(90-y) + 0.37y = 21.60
17.1 - 0.19y + 0.37y = 21.60
- 0.19y + 0.37y = 21.60 - 17.1
0.18y = 4.5
y = 4.5/0.18
y = 25 ounces
x + y = 90 (1)
x + 25 = 90
x = 90 - 25
x = 65 ounces
Help on these questions
Answer:
the answer is 42.
Step-by-step explanation:
(8)(5)−8+(2)(5)
=42
Answer:
1: 42
2: 107.6 °F
Step-by-step explanation:
For question 1 you insert the x and y values into the expression:
8 × 5 = 40 (xy = 40)
40 - 8 = 32 (xy - x = 32)
2 × 5 = 10 (2y = 10)
32 + 10 = 42 (xy - x + 2y = 42)
For question two you insert the celsius value into the expression:
9/5 × 42 = 75.6 (9/5C = 75.6)
75.6 + 32 = 107.6 (9/5C + 32 = 107.6)
What is the minimum value for the function shown in the graph?
Answer:
2.5
The lowest point on the graph, or the minimum is at f(x)= 2.5
The minimum value of the given periodic function is, 2.5
What are functions?Function is a relation between a set of inputs and a set of outputs which are permissible. In a function, for particular values of x we will get only a single image in y. It is denoted by f(x).
Vertical line test:-
Whenever we want to check whether a given expression is a function or not we can apply a vertical line test, in this test we check for a single image of x , we are getting a single image or more.
If we get more images then it will not be a function.
For example, let us take, y² = 4ax
y = ±√4ax
For single value of x we get two values of y
Hence, it will not be a function.
Given that,
A periodic function,
Period = 3π
The value of the function is in the range of (2.5, 4.5)
So,
Maximum value = 4.5
Minimum value = 2.5
Thus, the minimum value is 2.5
To know more about Functions check:
https://brainly.com/question/5975436
#SPJ6
When 89.325 is divided by a certain number, it becomes 8.9325. What is the number?
Answer:
10
Step-by-step explanation:
plz mark me brainliest ;)
The height (in feet) y of a bouncing ball and the time (in seconds) x since It was dropped, as shown in the graph below
Answer:
90 feet is the total distance,the total time will be the x value of the function's zero
Step-by-step explanation:
PLEASE HELP ME
Melinda, Meredith, John, Mark, Stan, and Max are sitting at a table. What
fraction of the students have names that begin with the letter ‘M'? *
O 1/4
O 2/3
O 1/2
O 4/5
Helllllpppp meeeee I neeedddd hellllpppp nowwww pleaseeee
Answer:
C
Step-by-step explanation:
They are all integers so they are rational numbers, they are whole numbers as well except there are negative numbers so they are not all natural.
Help Pleases!!
2^4x=8^x-3
Answer:
Step-by-step explanation:
If you change the bases to the same number, the exponents must equal each other.
please someone help me asap !!
Can anyone help me with this please
I’ll mark you as a brainliest.
What are the domain and range of the function f(x)=square root x-7 +9?
Answer:
Domain is all real numbers greater than or equal to 7. Range is all real numbers greater than or equal to 9.
Step-by-step explanation:
The domain is possible x-values while the range is possible y-values. This question look like
[tex] \sqrt{x - 7} + 9[/tex]
The domain of square root function cant have a the radical inside being a negative number because we can't take the sqr root of a negative number and graph it on a cartisean plane We can take the sqr root of 0 . So we set x-7=0. And which x=7 so the domain is all real numbers that are equal to or greater than 7. The range of a sqr root function can only yield any positive y-values. So we must find the lowest point of it. Since the lowest x value we can possible use is 7 we plug it in
[tex] \sqrt{7- 7} + 9[/tex]
which equals 9. So the range is all real numbers greater than or equal to 9.
Answer:
I think that the short answer will be C) on edge.
Step-by-step explanation:
Edge 2021.
HELP!!! I need help with this question
Answer:
90 90909090909090909090909090
graph y=-2(x-5)(x+1)
Answer:
Y=2(x-5)(x+1)
Y=2x-10+2x+2
=4x-8
Y =4x-8
I need help on slope. Anything concerning slope. Any advice you have would be worth a whole lot.
Earl runs 25 meters in 10 seconds. How many meters does Earl run per second?
Earl runs
meters per second.
Answer:
2.5 meters a second
Step-by-step explanation:
Because I said so