Answer:
$16.83
Step-by-step explanation:
If the usual price is $19.80 and they are on sale for 85% of the usual price, you can set this up in the form of a proportion.
[tex]\frac{85}{100} = \frac{x}{19.80}[/tex]
With this, you first multiply 85*19.80 and then you divide that answer by 100 to solve for x, the sale price.
Another way you can approach it is by changing 85% into it's decimal form (.85) and multiplying this by the original price (19.80).
the sum of two times a number and -2 is at least 8
how can I solve it plz help
What is the true solution to 3 l n 2 l n 8 = 2 l n (4 x) x = 1 x = 2 x = 4 x = 8
The true solution of the [tex]\rm 3log2+log8=2log(4x)[/tex] is 2.
It is given that the:
[tex]\rm 3log2+log8=2log(4x)[/tex]
It is required to find the value of [tex]\rm x[/tex].
What is Logarithm?It is another way to represent the power of numbers ie.
[tex]\rm a^b=c\\\rm log_ac=b[/tex]
Some properties of Logarithm:
[tex]\rm logx+logy=log(xy)\\\rm x logy=logy^x[/tex]
We have:
[tex]\rm 3log2+log8=2log(4x)\\\\\rm By \ using \ properties \ of \ Logarithm\\\\\rm log2^3+log8=log(4x)^2\\\rm log(8\times8)=log16x^2\\\rm log64=log16x^2\\\rm 64=16x^2\\\rm 4=x^2\\x=2[/tex]
Thus, the true solution of the given expression is 2.
Learn more about the Logarithm here:
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Answer: B
Step-by-step explanation:
Simple because Im the man the simple
Circle the equation and put an X through the non-equations
a. 3+4=x
b. 2x-5=20
c. 3+2=x+7
d. 3x-4
Answer:
a, b, c are all equations d non equation
Step-by-step explanation:
someone please help:)
Answer:
D, B, E
Step-by-step explanation:
Try plotting the graph on desmos
5x-4y=19
x+2y=8
solve the simaltaneous equation
Answer:
( 5, 3/2 )
x = 5
y = 3/2
Step-by-step explanation:
5x - 4y = 19
x + 2y = 8
-------------------
2(x + 2y = 8) = 2x + 4y = 16
----------------------
5x - 4y = 19
2x + 4y = 16
7x = 35
÷7 ÷7
x = 5
-----------------------
x + 2y = 8
5 + 2y = 8
-5 -5
2y = 3
÷2 ÷2
y = ( 3/2 )
I hope this helps!
Answer:
( 5, 3/2 )
Step-by-step explanation:
Choose the inequality that represents the statement.
You must get a 90 or higher to pass the course.
Answer:
C
Step-by-step explanation:
C because the symbol means Greater then or Equal too
So anything 90 or above would be true
HELP ASAP ILL MARK BRAINLIST
What is the missing value for x on the diagram below? Round your answer to the nearest tenth.
Answer:
Step-by-step explanation:
it's radius is 6 so diameter is 12 .
12^2+x^2=15^2
144+x^2=225
x^2=111
x=underradical111
If you deposit $5000 into an account that pays 3% annual Interest compounded -annually, how much money will you have after 2 years?
Answer:
$5130.84
Step-by-step explanation:
100 + 3 = 103%
103% = 1.013
$5000 x 1.013^2 = $5130.84
Hope this helps!
An angle measures 6° less than the measure of its complementary angle. What is the measure of each angle?
Answer:
42°, 48°
Step-by-step explanation:
Complementary angles have a sum of 90 degrees. This lets us write the relation ...
x + (x +6) = 90 . . . . . where x represents the angle; x+6 is its complement
2x = 84 . . . . . . . collect terms, subtract 6
x = 42 . . . . . divide by 2
x +6 = 48 . . . . find the complementary angle
The two angles are 42° and 48°.
HOW EVER ANSWERS THIS WILL MARKED AS BRAINLIST AND WILL GET A FOLLOW.
In a traffic count a man recorded a 15 min video and counted the cars coming the total cars he counted were 303 cars. So how many cars drove in 1 min? and how many cars drove in 1 hours and 24 hours?
What does the STO button on a calculator do?
Answer:
The STO button stands for store so it will save the number in the memory and to get it back press m
Solve the absolute value equation, [x] – 2 = 5.
Answer:
x=7
Step-by-step explanation:
Ok so first off, the x variable being in absolute value form will not change the outcome of the problem at all since there are no other x variables in the equation.
x-2=5
(add 2 on both sides)
x=7
pls help I am not very good at math.
Answer: Its D
Step-by-step explanation:
Thank me later.
Answer:
D
Step-by-step explanation:
4x - 12 - x ≥ 3
Add 12 to both sides.
4x - x ≥ 15
Subtract x (or 1x) from 4x
4x - x = 3x
3x ≥ 15
Divide both sides by 3.
x ≥ 5
Hope I helped :)
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Is this a supplementary angle or a complementary angle?
Answer:
Supplementary angles
Step-by-step explanation:
The two angles shown are supplementary. You can see if the 3x+15 were to slide down to the next line, how the 3x+15 and 2x would make up a linear pair. Together they add up to 180°
Not sure if you need it, but to solve for x:
3x+15 + 2x = 180
combine like terms.
5x + 15 = 180
Subtract 15.
5x = 165
divide by 5
x = 33
Then you can find the measures of the angles.
3(33)+15
= 114°
2(33)
=66°
evaluate 2a(b + 8) if a = 3 and b = 5. A. 33 B. 38 C. 65 D. 78
Answer: 78
Explanation: Whenever we deal with an evaluation problem, make sure to always use parenthses when substituting numbers in for variables.
Notice that we have a set of parenthses in our original problem.
To avoid the confusion of having too many sets
of parenthses, let's change the parenthses to brackets.
So we have 2(3) [(5) + 8].
Simplifying from here, we have (6) [(13].
Multiplying, we get 78.
Answer:
D.
Step-by-step explanation:
6*13=78
At Marco's Pizza House it costs $4.00 to make a small
pizza. If they intend to mark-up the pizza by 80% what
will the cost be for customers?
A. $4.32
B. $4.80
C. $7.20
D. $32.20
Answer:
7.20 dollars
multiply $4 and 80%
then add ur answer with 4
Step-by-step explanation:
please pass this on... ( #helpsavelives )
Who ever is reading this:
I love u.
U matter.
The world needs u
hang in there ik it may be bad but u deserve the world <3
ur beautiful no matter ur shape, size, color, gender.. anything
don't give up i need u to live.
i wish i could take everyones problems so yall wouldn't have to have em but i cant so just know ily and if anyone needs to talk u can talk to me
Pls pass this on. Everyone deserves to know this. ♥️♥️
just copy and paste its not hard pls this could save someones life
Malik claims that a 120° angle and side lengths of 3 cm
and 4 cm can form more than one unique triangle. He
draws these triangles as proof. Is Malik correct? Explain
why or why not.
A 120° angle and the side lengths can form more than one unique triangles
Malik's claim about the triangle is true
How to prove or disprove Malik's claim?From the question, we have Malik's claim to be:
A 120° angle and side lengths of 3 cm and 4 cm can form more than one unique triangle
The above claim is true;
This is so because, the 120 degrees angle can be between the side lengths of 3 cm and 4 cm and the angle can be located not between the side lengths
This means that there are at least two unique triangles that can be formed using the given parameters
Hence, Malik's claim about the triangle is true
Read more about unique triangles at:
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please help me i put the two pictures there
Answer: 91 and 101 miles
Step-by-step explanation:
There is a series of three chemical reactions (1→2→3) that form the overall chemical reaction.
How is the ΔH3 calculated if the others are known?
ΔH3 = ΔH1 + ΔH2 - ΔH4
ΔH3 = ΔH4 -( ΔH1 + ΔH2)
ΔH3 = (ΔH1)(ΔH2)(ΔH4)
ΔH3 = ΔH1 + ΔH2 + ΔH4
From the statement of Hess law, the ΔH3 is calculated when others are known from; ΔH3 = ΔH4 -( ΔH1 + ΔH2).
What is Hess law?Hess law of constant heat summation states that the total heat evolved or absorbed for a series of reactions is the sum of all the heat absorbed or evolved at all steps in the reaction sequence.
Let the heat for the overall reaction be ΔH4 while ΔH1, ΔH2 and ΔH3 designate the heat of reaction for reactions 1,2,3. It then follows that, the ΔH3 is calculated when others are known from; ΔH3 = ΔH4 -( ΔH1 + ΔH2).
Learn more about heat of reaction: https://brainly.com/question/517776
PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!!
Answer:
The answer you pick is right YOU SMART
Step-by-step explanation:
5E. Express the given fraction below in the simplest form.
Answer:
9/10
Step-by-step explanation:
3 1/3 can be written as 10/3
then we have 3/10/3 we then have 3x3/10 which equals 9/10.
4. Draw the image of rectangle `ABCD` under dilation using center `P`and scale factor 1/2
a) Complete the table to help you by counting distances from P.
b) To complete the last column, simply MULTIPLY each distance by the scale factor.
c) Drag the points A'B'C'D' to the correct locations on the grid. Use the LAST column of the table to help you find the NEW locations of the points.
find the value of each variable
Answer:
x = 7
y = 7√3
Step-by-step explanation:
Formulas : -
sin θ = opposite side / hypotenuse
When θ = 60,
Opposite side = y
Hypotenuse = 14
sin 60 = y / 14
√3 / 2 = y / 14
y = √3 x 14 / 2
= √3 x 7
y = 7√3
When θ = 30,
Opposite side = x
Hypotenuse = 14
sin 30 = x / 14
1 / 2 = y / 14
x = 1 x 14 / 2
= 1 x 7
x = 7
Note : -
The value of,
sin 30 = 1 / 2
cos 60 = 7√3
Why do my teachers give me problems they can't help me with -_-
Answer:
a. False
b. True
c. True
d. False
Step-by-step explanation:
a. Is false because it says the equivalent ratios of centimeters and feet. When it is comparing centimeters and inches
b. Is true because the unit rate in this double number line is 2.54 centimeters per inch
c. Is true because it shows on the double number line that 6 inches is equal to 15.54 centimeters
d. Is false, although the fact that 0.039 inches are in a centimeter is true, it does not show that rate in the double number line
I hope this helps :)
Answer:
a. True
b. True
c. True
d. False
Step-by-step explanation:
a. 30.48 centimeters is equal to one foot (12 inches)
b. The unit rate means how many centimeters per inch
c. 6 inches on the number line is equal to 15.24 centimeters
d. If you divide 1 by 2.54 the answer is 0.39 not 0.039
Maggie is knitting sweaters for her family. Each day she makes 1/4 of a sweater. Which fraction shows the number of sweaters can knit in 8 days
The fraction which represent the number of sweaters Maggie knits in 8 days is 2/1 sweaters
How to solve fraction?Sweaters Maggie knits per day = 1/4Number of days = 8 daysTotal number of sweaters Maggie knits = Sweaters Maggie knits per day × Number of days
= 1/4 × 8
= (1 × 8) / 4
= 8/4
= 2/1 sweaters
Learn more about fraction:
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State if the two triangles are congruent. If they are, state how you know.
Answer:
AAS stand for "angle,angle,side" and means that we have two triangles where we know two angles and non- include side are equal.if two angles and the non include side of one triangle are equal to the corresponding
angles and side of another triangle, the triangle are congruent..
and the answer is B. not congruent
Joshua is a year older than his sister McKay. The product of their ages is 33 more than 7 times Joshua’s age. How old are Joshua and McKay?
Answer:
Joshua is 11 and Mckay is 10.
What is the measure of the missing side to the nearest tenth?
9
23
х
Answer: 24.7
Step-by-step explanation:
What is the difference? StartFraction 2 x 5 Over x squared minus 3 x EndFraction minus StartFraction 3 x 5 Over x cubed minus 9 x EndFraction minus StartFraction x 1 Over x squared minus 9 EndFraction.
The expression which is equivalent to the difference of the given algebraic fraction is,
[tex]\dfr\dfrac{(x+5)(x+2)}{x(x-3)(x+3)}[/tex]
What is the difference?Difference is the mathematical operation in which the one number is subtract from another number.
To find the difference of two fraction numbers, we find the least common factor of denominator and write the all numbers as one fraction.
The given expression in the problem is,
[tex]\dfrac{2x+5}{x^2-3x}-\dfrac{3x+5}{x^3-9x}-\dfrac{x+1}{x^2-9}[/tex]
Factorize the denominator of each term as,
[tex]\dfrac{2x+5}{x(x-3)}-\dfrac{3x+5}{x(x-3)(x+3)}-\dfrac{x+1}{(x-3)(x+3)}[/tex]
Here, the least common factor of the denominators is x(x-3)(x+3), therefore, the expression can be written as,
[tex]\dfrac{(x+3)(2x+5)-(3x+5)-(x)(x+1)}{x(x-3)(x+3)}\\\dfr\dfrac{2x^2+5x+6x+15-3x-5-x^2-x}{x(x-3)(x+3)}\\\dfr\dfrac{x^2+7x+10}{x(x-3)(x+3)}\\\dfr\dfrac{(x+5)(x+2)}{x(x-3)(x+3)}[/tex]
Hence, the expression which is equivalent to the difference of the given algebraic fraction is,
[tex]\dfr\dfrac{(x+5)(x+2)}{x(x-3)(x+3)}[/tex]
Learn more about the difference of two fractions here;
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a train is moving at a uniform speed of 80 kilometre per hour.
a) how far will it travel in 15 minutes
b) find the time required to cover a distance of 250 km. { as per direct and inverse propositions}.
A train is moving at a uniform speed of 80 kilometre per hour.
a) how far will it travel in 15 minutes
b) find the time required to cover a distance of 250 km. { as per direct and inverse propositions}.
Explanation -:a)
Given that the train is moving at a uniform speed of 80 km/h.
Time taken = 15 minutes
First we will convert the time
[tex] \small \sf Time \: taken = 15 min = \dfrac{ \cancel{15}}{ \cancel{60}}hr = \dfrac{1}{4}hr [/tex]
Now we will calculate the distance
We know,
[tex] ✪ \: \small\boxed{ \frak{ {Distance }= {Speed} × Time }}[/tex]
Substituting the values in the given formula
[tex] \small\sf{ Distance = \cancel{ 80} \: \: 20 \: km/ \cancel{ hr} × \dfrac{1}{ \cancel{4}} \cancel{hr} =20km }[/tex]
Distance covered in 15 minutes = 20 km
[tex] \rule {40mm}{2pt}[/tex]
b)
Given that the train is moving at a uniform speed of 80 km/h.
Distance covered = 250 km
Calculating the time
We know,
[tex] ✪ \: \small\boxed{ \frak{ Time = \dfrac{Distance}{Speed}}}[/tex]
Substituting the values in the given formula
[tex] \small\sf{ Time = \dfrac{250 km}{80 km/hr} =3 \: hrs \: 20 \: mins }[/tex]
[tex] \star \: \small\sf{ Final \: Answer }[/tex]
Distance = 20 kmTime = 3 hrs 20 minutes[tex] ••═════════════••══════[/tex]