hello, can you please help? please show work. thank you!
-2x*(10x – 9x² - 7x + 4)
Answer:
[tex]18x^{3}[/tex] - [tex]6x^{2}[/tex] - 8x
Step-by-step explanation:
-2x(10x - [tex]9x^{2}[/tex] - 7x + 4)
-2x(3x - [tex]9x^{2}[/tex] + 4) Combine liked terms
-2x(-[tex]9x^{2}[/tex] +3x +4) Rearrange terms
[tex]18x^{3}[/tex] - [tex]6x^{2}[/tex] - 8x Distribute
[tex]18x^{3}[/tex] - [tex]6x^{2}[/tex] - 8x
Two liabraries donated to a local school. One library donated 786 books and the other library donated 1245 books. The school divided the books evenly among 11 classrooms. Estimate the number of books each classroom received. Check if the answer is reasonable.
a group of 5 friends goes to a show. Each ticket cost $9, and the friends share a popcorn that cost $6. Which shows the total cost
Answer:
The total cost is $51
Step-by-step explanation:
The answer is 51 because 5 times 9 is 45 and 45 plus 6 is 51
.
Answer:
the total cost is $51.00 dollars
Help please it’s important
Answer:
C
Step-by-step explanation:
Hummingbird beat their wings many times per second which equation relates the number of beats per second (a) to the number of wing per minute (b)
A.b=a+60
B.b=60/a
C.b=60a
D=a/60
Answer:
B
Step-by-step explanation:
What is the slope of the line that passes through the given points?
(-12,-4) and (11,-10)
Answer:
Y2-y1
X2-×1 = m
-12-(-10)
11-5 = -2/3
m= -2/3
Step-by-step explanation:
Can someone help me
joanna has 20 pieces of candy. she decides then between her X friends. How many pieces does each friend get?
a: -20
b: 20/x
c: 20x
Answer: 20/x
Step-by-step explanation:
Norah is 8 feet below sea level. How
many feet must she climb to get to
the surface? Creat an addition
sentence and find the answer.
tarting at elevation zero, Zen climbs to an elevation of 4,646.4 feet to reach the Cragway Trail. From there, he hikes up another 1,817.6 feet to the Calloway Peak Summit, the highest point on Grandfather Mountain. Based on these numbers, the Calloway Peak Summit is at a height of
feet.
On his return trip, Zen descends from the Calloway Peak Summit to an elevation of 2,402.5 feet, arriving at the Flat Rock Junction. So, the elevation at Flat Rock is
feet.
Answer:
Calloway Peak is 6,464 Feet. And Flat Rock is 4061.5 Feet
Step-by-step explanation:
For Calloway Peak Started at 0 so 4646.4+1817.6=6,464
Zen then descends which means he walked back down 2402.5 feet.
To find Flat Rock you subtract the height of Calloway Peak by 2402.5 the amount that he walked back down to get how tall Flat Rock is in Feet
6464-2402.5=4061.5 Feet
So Flat Rock is 4061.5 Feet tall.
(16, 2) and (32, 4) rate of change
Answer:
m = 1/8
Step-by-step explanation:
Assuming that you mean the slope:
[tex]m=\frac{rise}{run}=\frac{4-2}{32-16}=\frac{2}{16}=\boxed{\frac{1}{8}}[/tex]
Hope this helps.
If there are There are 914.4914.4914, point, 4 millimeters in a yard. There are 333 feet in a yard.
How many millimeters are in a foot?
Answer: 304.8
Step-by-step explanation:
for an approximate result, multiply the length value by 305
Answer: 304.8
Step-by-step explanation:
Raina wants to plant grass in her backyard. Her backyard is in the shape of a rectangle. Its length is 30 feet and its width is 21 feet. Suppose each pack of seed covers 15 square feet. How many packs of seed will she need to cover the backyard?
Answer:
42
Step-by-step explanation:
A simple moving average a. is a cumulative breadth measure b. is constructed from various randomly selected interviews of retail investors c. seldom changes in value d. is constructed by totaling a set of data and dividing that total by the number of observations
Answer:
d. is constructed by totaling a set of data and dividing that total by the number of observations
Step-by-step explanation:
Moving average is a method of calculation that is use to analyze the data points by making a series of averages of the various subsets in the full data set. Its another name is rolling average or moving mean.
A simple moving average is constructed by taking the sum of a set of data and then dividing the total by a number of the observations.
solve for x.
-7/8x = -5
A.x = 5 5/7
B.x = -4 3/8
C.x = 4 3/8
Answer:
A. 5 5/7Step-by-step explanation:
Hope this helps!! Please consider marking brainliest! Have a good one!!
The population of a city is estimated to decline according to the model P(t)=197000e^-0.014t, where t is the number of years present. What does the model predict the population will be in 13 years?
write the sentence as an inequality. then solve the inequality.
the difference of 5 and a number is at least 13
Answer:
-5a<13
Step-by-step explanation:
A truck enters a stretch of road that drops 4 meters
in elevation for every 100 meters along the length of
the road. The road is at 1,300 meters elevation where
the truck entered, and the truck is traveling at
16 meters per second along the road. What is the
elevation of the road, in meters, at the point where
the truck passes t seconds after entering the road?
Answer:
The elevation would lower in total 52 feet.
Step-by-step explanation:
Answer:
it would be 52 feet
Step-By-Step explanation
how many time can 22 go into 30
Answer:
1 time
Step-by-step explanation:
This is the answer because:
1) 22 x 1 = 22
2) If we do 22 x 2, the number will become larger than 30
3) Therefore, 22 can only go one time into 30 because 30/22 = 1 R8
Hope this helps!
What point is on both lines y = 1/2x + 3 and y = x +1?
Answer:
(4,5)
Step-by-step explanation:
how many minutes is 40% of 120 minutes?
Answer:
48 mins
Step-by-step explanation:
40 x 120 /100
= 48
Can someone help me with math?
Answer:
wish i could
Step-by-step explanation:
A car travels 30 1/5 miles in 2/3 of an hour. What is the average speed of the cat in mph?
Answer:
45.3 miles/h
let 'x' be the speed of the car. Hope this will helps:)
Step-by-step explanation:
help i have to turn this in 3 min someone????
Answer:
A
Step-by-step explanation:
Using the function g(x) = -2x + 5, what would the input need to be for an output of -5?
Answer:
5
Step-by-step explanation:
the in put would need to be 5 cuz :
-2 x 5 + 5
-10 + 5
-5
Answer:5
Step-by-step explanation:
Can you help me with this please. I will mark brainlist
Answer:
E is [tex]\frac{1}{2\\}[/tex] F is 6[tex]\frac{1}{4}[/tex] and G is [tex]1\frac{1}{2}[/tex]
Step-by-step explanation:
Simplify:
3(8) 0 • (3) –2
Answer:
-2
Step-by-step explanation:
!&÷×\÷\*÷*=*=*3*÷*÷*÷8÷*8
The simplification of the given expression is -2.
What are equivalent expressions?Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.
To derive equivalent expressions of some expression, we can either make it look more complex or simple. Usually, we simplify it.
We are given the expression as;
3(8) 0 • (3) –2
We need to simiplify this expression;
3(8) 0 • (3) –2
24(0) . 3 - 2
0-2
-2
Therefore, the simplification of the given expression is -2.
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The money used in poland is called the zlotych. the exchange rate is 3 zlotych for would $1. find how many zlotych you would receive if you exchanged $3
find the whole number
Answer:
You would receive 9$
Step-by-step explanation:
if you multiply 3 by 3, then you will get 9
What is the length of the third side of the window frame below
Answer:
1.
Step-by-step explanation:
a^2+b^2=c^2
since the hypotenuse is 78 you would square it and the other known number. After squaring both you subtract 6084-5184 and get 900. you would then take the square root and get 30.
COHEA 8th Grade Test 1
Que
Sharta's batting average in softball is 0.583. She wants to know the fraction equivalent to the decimal. Which fraction represents Sharla's batting average?
O
5
음
O
Answer:d
Step-by-step explanation:
The fraction that represents Sharta's batting average is 583/1000.
What is Fraction?A fraction is a mathematical representation of a part or parts of a whole. It consists of two numbers separated by a horizontal line, with the number above the line called the numerator and the number below the line called the denominator.
To convert a decimal to a fraction, we can use the place value of the decimal. In this case, Sharta's batting average is 0.583.
The decimal 0.583 can be expressed as a fraction by considering the digits after the decimal point.
The number 583 has three decimal places, so we can write it as:
= 0.583
= 583/1000
Therefore, the fraction that represents Sharta's batting average is 583/1000.
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