Solve for the equation
4x - 4(7-5x) = -20
Answer:
x = 1/3
Step-by-step explanation:
Answer:
x = 0.34
Step-by-step explanation:
Simplifying
4x + -4(7 + -5x) = -20
4x + (7 * -4 + -5x * -4) = -20
4x + (-28 + 20x) = -20
Reorder the terms:
-28 + 4x + 20x = -20
Combine like terms: 4x + 20x = 24x
-28 + 24x = -20
Solving
-28 + 24x = -20
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '28' to each side of the equation.
-28 + 28 + 24x = -20 + 28
Combine like terms: -28 + 28 = 0
0 + 24x = -20 + 28
24x = -20 + 28
Combine like terms: -20 + 28 = 8
24x = 8
Divide each side by '24'.
x = 0.3333333333
Simplifying
Mrs. Woods prepared bags of baked cookies. The graph shows the number of bags and the number of cookies she used.
She distributed the cookies evenly throughout all the bags. How many cookies did she use per bag?
Answer:
around 20 cookies
Step-by-step explanation:
Answer:
D 15
Step-by-step explanation:
If you look at the graph the number of bags, in 1 bag is 15 and if she divided them evenly then 15 would have to be in every bag.
i need EXTRA help with this PLEASE AND THANK YOU!
A grocery store receives a crate with contents that weigh 180 pounds. The contents consist of six 10-pound bags of potatoes and an unknown number of 5-pound bags of potatoes. Choose an equation that represents the number of bags of potatoes in the crate.
A: 6(10) + 180 = 5x
B: 10 + 6 + 5x = 180
C: 180 = 5 + 60x
D: 6(10) + 5x = 180
Answer:
6(10)+5x=180
Step-by-step explanation:
This is because there are 6 10-pound bags that we know of, so it would be 6(10).
Then, there are an unknown number of 5-pound bags, in which the variable would be x, so it would be 5x.
Lastly, the content weighs 180 pounds, so that's what the equation would be equal to.
85 POINTS!!!!!! Describe the graph of y = -|x + 4| - 5. 9(For 85 points it should at least be a sentence or two)
Answer:
The graph is the shape of an inverted "V" and opens downwards.
The vertex of the graph is (-4, -5) and its axis of symmetry is x = -4.
When x > -4, every time x increases by 1 unit, y decreases by 1 unit.
When x < -4, every time x decreases by 1 unit, y decreases by 1 unit.
Step-by-step explanation:
Absolute value
The bars either side of an expression or a value are the absolute value symbols. "Absolute value" means how far a value is from zero. Therefore, the absolute value of a number is its positive numerical value.An absolute value function is a function that contains an algebraic expression within absolute value symbols.-----------------------------------------------------------------------------------------
General form of an absolute value function
\(y=a|x-h|+k\)
where:
a controls the width of the "V".(h, k) is the vertexIf a > 0 the graph opens upwards.Given absolute value function:
\(y=-|x+4|-5\)
Graph of the given absolute value function:
As a < 0, the graph is the shape of an inverted "V" and opens downwards. The vertex of the graph is (-4, -5).Its axis of symmetry is x = -4. When x > -4, every time x increases by 1 unit, y decreases by 1 unit.When x < -4, every time x decreases by 1 unit, y decreases by 1 unit.All of the fractions are proper fractions,except
\(\frac{11}{12}\)
\(\frac{1}{6}\)
\(\frac{7}{5}\)
\(\frac{8}{15}\)
can I please know the ASAP please and thank you.
Find the volume of the triangular prism; do not round.
Answer:
\(\boxed{\mathtt{Volume=33.55m^{3}}}\)
Step-by-step explanation:
\(\textsf{For this problem, we are asked to find the Volume of a Triangular Prism.}\)
\(\large\underline{\textsf{What is Volume?}}\)
\(\textsf{Volume is the amount of space a figure occupies. Volume is measured in Cubic units.}\)
\(\large\underline{\textsf{We are Given;}}\)
\(\textsf{The Height is 6.1m. Keep in mind that the Height is the Perpendicular Distance}\)
\(\textsf{between 2 bases.}\)
\(\textsf{The base is; (4.4 x 2.5).}\)
\(\textsf{The Height of the Triangle is 2.5m.}\)
\(\large\underline{\textsf{Necessary Formulas;}}\)
\(\mathtt{Volume=(Base) \times Height}\)
\(\mathtt{Area = \frac{1}{2} (Base \times Height)}\)
\(\large\underline{\textsf{For this Problem;}}\)
\(\mathtt{Volume=(Triangles' \ Area) \times Height}\)
\(\large\underline{\textsf{The area of a Triangle is;}}\)
\(\mathtt{Area = \frac{1}{2} (Base \times Height)}\)
\(\textsf{Find the area of the base first.}\)
\(\large\underline{\textsf{Substitute;}}\)
\(\mathtt{Area = \frac{1}{2} (4.4 \times 2.5)}\)
\(\boxed{\mathtt{Area = 5.5m^{2}.}}\)
\(\textsf{We know the Base, now let's find the volume of the figure.}\)
\(\large\underline{\textsf{Substitute;}}\)
\(\mathtt{Volume=5.5 \times 6.1}\)
\(\boxed{\mathtt{Volume=33.55m^{3}}}\)
\(\huge\text{Hey there!}\)
\(\huge\textsf{Find the \boxed{\bf volume} of a triangular prism is:}\)
\(\mathsf{\dfrac{1}{2}(\boxed{\bf b}ase\times\boxed{\bf h}eight\times\boxed{\bf l}ength) = \boxed{\bf v}olume}\)
\(\huge\textsf{Your \boxed{\bf equation} should look like:}\)
\(\mathsf{volume = \dfrac{1}{2}(4.4\ m \times 2.5\ m\times 6.1\ m)}\)
\(\huge\textsf{\boxed{\bf Step-by-step} explanation can be:}\)
\(\mathsf{volume = \dfrac{1}{2}(4.4\ m \times 2.5\ m\times 6.1\ m)}\)
\(\mathsf{volume = \dfrac{1}{2}\times 4.4\ m \times 2.5\ m\times 6.1\ m}\)
\(\mathsf{volume = 0.5\times 4.4\ m \times 2.5\ m\times 6.1\ m}\)
\(\mathsf{volume = 2.2\ m\times 15.25\ m}\)
\(\mathsf{volume = 33.55}\)
\(\huge\textsf{Therefore your \boxed{\bf answer} should be:}\)
\(\huge\boxed{\mathsf{volume = 33.55m^2}}\huge\checkmark\)
\(\huge\text{Good luck on your assignment \& enjoy your day!}\)
help! i dont this math problem please due soon!
Answer:
12x12 12x6 H = 46cm
Step-by-step explanation:
took quiz
Answer:
46 cm
Step-by-step explanation:
I learned this formula in math last year
i need help asa this is apart of mmy math test please help im terrible at math
Answer:
1. He's wrong. It's 6.375
2. 0.36, terminating
3. 0.7, repeating
Step-by-step explanation:
Answer:
1. Johnny is wrong. 6 3/8 converted to a decimal is 6.375.
2. 0.35 (Terminating)
3. 0.77 with a bar on top of the 7 I don't know how to show it (Repeating)
Step-by-step explanation:
The height of a stack of DVD cases is proportional to the number of cases in the stack. The height of 8 DVD cases is 136 mm. Use this to answer parts a through c.
Use mental math to find the equations that are true. Select all that apply.
A.
400
÷
80
=
50
B.
4
,
000
÷
80
=
5
C.
400
÷
8
=
50
D.
40
,
000
÷
800
=
50
E.
40
,
000
÷
80
=
500
Answer: select B,C,D,E
Step-by-step explanation:
Pls help! Will give brainliest!!
Considering area (A) of garden as 30 square feet:
30 = x(2x+7)
Now we need to expand it:
x(2x+7) = 2x^2 + 7x
2x^2 + 7x = 30
Adding this into an Algebra calculator gives us 5/2 or 2.5
So x = 2.5
To prove this:
2(2.5) + 7 = 12
14 * 2.5 = 30
X Y
-7 0
0 1
What is the slope of the linear function represented in
the table?
*-7
07/1
01/1
07
In 56 years, Kevin will be 9 times as old as he is now
How old is Kevin now?
Answer:
correct answer is 7 years
Step-by-step explanation:
A+56=9(A)
56+9A
A=7
he will be 7 years old he is pretty old
Answer:
Kevin is 7 years old right now.
Step-by-step explanation:
Let x be Kevin's age right now, that's what we're trying to find.
In 56 years, he'll be 9 times older than he is now, so we can say:
x + 56 = 9x
Now we can get the x values on the right side of the equation so that:
56 = 8x
Now solve for x and you have his current age which is 7.
I need help Right NOw(will give brainliest) Which expression is equivalent to (3.1x−2.4y+1.9)+(2.2x−1.4y−3.4)?
1.(3.1x+2.2x)+(−2.4y+(−3.4y))+(1.9+(−1.4))
2.(3.1x+2.2x)+(−2.4y+1.4y)+(1.9+3.4)
3.(3.1x+2.2x)+(−2.4y+(−1.4y))+(1.9+(−3.4))
4.(3.1x+(−2.2x))+(−2.4y+(−1.4y))+(1.9+(−3.4))
Answer: 12
Step-by-step explanation:
adsfffffffffffffffffffffffffffffffffffffffffffffffffffffffff
Who ever answers right gets the brain award.
Set the area equal to 2x , solve for x, and then multiply the value of x by 4
Hope this helps.
Pls vote brainliest. I've never been picked before.
QUICKLY I NEED HELP!!!!!! NO WRONG ANSWERS!!
Answer:
Step-by-step explanation:
Question
Today, John ran 15 miles in 2 hours and 30 minutes. He wants to represent the relationship between the distance he ran, in miles, and the time, in hours, as proportional in order to examine his times at various distances. Write an equation that John can use to represent a proportional relationship between distance, d , in miles, and time, t , in hours.
Answer:
d = 6t
Step-by-step explanation:
Firstly, lets change the 2 hours and 30 minutes to 2.5 hours, you could devide the time in minutes by 60 to get that number 2[hours]+()[minutes to hours] = 2.5Hours. Anyway, John ran 15 miles in 2.5 hours which means he ran (15÷2.5) in one hour which is equal to 6miles per hour. That means if you multiply the hours he ran by 6 you will get the miles he ran. So the answer would be:
d = 6t
If xx and y vary directly and y is 21 when x is 7, find y when x is 5
Answer:
y = 15
Step-by-step explanation:
We need to solve for k
y = x
21 = 7k Divide both sides by 7 to solve for k
3 = k
y = xk
y = 5(3)
y = 15
Answer: y = 15
Step-by-step explanation:
Help meh please..................
Answer:
The correct answer is B. (2x and 7y)
Step-by-step explanation:
You cannot combine x to y therefore they are considered unlike terms .
Estimate how many times large (6.1) x 10⁷ is than (2.1) x 10⁻⁴ ?
The base of this pyramid is a rectangle. How many congruent faces does this pyramid have?
The pyramid has 4 congruent faces.
The pyramid has 5 congruent faces.
The pyramid has 1 pair of congruent faces.
The pyramid has 2 pairs of congruent faces.
Answer: The Pyramid has 2 pairs of congruent faces
Step-by-step explanation:
The explanation of congruent is the face has the same shape and same size. On rectangle pyramid, the height triangle are 2 same faces and 2 same faces, so it has 2 pairs of congruent faces
Emilio earns 12% for each car sale he makes while working at a used car dealership. If he sells a used car for $2,500, what is his commission? Using complete sentences explain if his commission will be less or greater than the price of the car.
i need help pls help
Answer:
x is 5
Step-by-step explanation:
Will Give Brainiest!!! Please Help!!
A scatter plot is shown on the coordinate plane.
scatter plot with points plotted at 1 comma 7, 1 comma 10, 2 comma 6, 3 comma 7, 3 comma 8, 5 comma 8, 6 comma 6, 7 comma 4, 9 comma 2, and 10 comma 1
Which two points would a line of fit go through to best fit the data?
A. (1, 10) and (6, 6)
B. (1, 7) and (2, 6)
C. (3, 7) and (7, 4)
D. (3, 8) and (6, 6)
The table shows the multiplication of two linear expressions. Select the correct reason for each step.
Reason 1:
Reason 2:
Reason 3:
Reason 4:
Answer:
Step-by-step explanation:
reason 1:
opening of brackets to solve the expression
reason 2:
in multiplication order is followed i.e. the number always lead the variable in the expression
reason 3:
for clarification brackets are added to multiply like terms i.e. numbers with numbers and variable with the variable
reason 4:
the solved and simplified expression is delivered as a result
Please if anyone could answer this question. Me and my friends tried but only got headache at last. Kinda stuck in this question now.
Answer:
3/4 of the whole day(24 hours)
Step-by-step explanation:
1/3 of 24 hours equal to 8 hours. He slept for 8 hours. So his waking time equals 24-8=16
5/8 of his waking time (16 hours ) equal to 10 hours.
now total time spent in his house 10 + 8 = 18
in fraction 18/24 = 3/4
He slept 1/3 of the day, and is awake 2/3 of the day (note that 1/3 + 2/3 = 3/3 = 1)
2/3 of 5/8 = (2/3)*(5/8) = (2*5)/(3*8) = 10/24 = 5/12 of the day is spent at home when he is awake
Add 1/3 and 5/12 to get
1/3 + 5/12 = 4/12 + 5/12 = (4+5)/12 = 9/12 = 3/4
He spent 3/4 of a whole day at home (equivalent to 18 hours)
Answer: 3/4Yasin has tried to work the size of the angle marked g in the regular decagon below, using the fact that exterior angles sum to 360°. His workings are shown below.
a) Write a sentence to explain what Yasin has done wrong.
b) What is the size of angle g? Show all your workings.
well, Yasin is correct, the exterior angles are all 36° each, however "g" is including more than just that, Check the picture below.
Answer: 36 is wrong
Step-by-step explanation: 360 - 36 = 324 degrees
uhhh 6th grade work pls help
Find the surface area of the prism.
ONE MORE AFTER THIS AND IM DONE I SWEAR xD
Answer:
294
Step-by-step explanation:
As I said- (LW + WH + HL) x 2
:)
Choose the three equivalent forms of 4.625.
four and five eighths, 462.5%, thirty seven eighths
four and six twenty fifths, 4.625%, thirty seven eighths
four and five eighths, 4.625%, forty five eighths
four and six twenty fifths, 462.5%, forty five eighths
Answer:
Step-by-step explanation:
4.625%- percents and decimals are the same
four and five eighths- five divided by eight is (.625) and 4+ (.625) is 4.625
thirty seven eighths- 37 divided by 8 is 4.625