Answer:
[tex]x[/tex] = 2.8
Step-by-step explanation:
If the quadrilaterals are similar, then the ratios of corresponding sides will be equal:
KL : QR = 4 : 5.6 = 4 / 5.6 = 5/7
JM : PS = 7 : 9.8 = 7 / 9.8 = 5/7
LM : RS = 3 : 4.2 = 3 / 4.2 = 5/7
This shows that the ratio of KJ : QP = 5/7
KJ : QP = 2 : [tex]x[/tex] = 2 / [tex]x[/tex]
Therefore, [tex]\frac{2}{x}=\frac{5}{7}[/tex]
cross multiply: 14 = 5[tex]x[/tex]
Divide both sides by 5: [tex]x[/tex] = 2.8
Solve the problem and explain the steps taken. There are four students working on a project in math class. Miguel has completed 1/8 of the project, Gina has completed 13% of the project, Jatziry has completed 0.10 of the project, and Kwa has completed 19 of the project. Makw a list of students in order from least to greatest by the amount of the project they have completed.
Answer:
10%
12.5%
13%
19%
Step-by-step explanation:
First write all of the amounts as a percent.
1/8 = 12.5%
13%
.10 = 10%
19%
Then you can order them from least to greatest.
10%, 12.5%, 13%, and then 19%
hope this helps
Simplify (6x2 − 3 5x3) − (4x3 − 2x2 − 16). 2x3 − x2 21 −2x3 x2 − 21 x3 8x2 13 −x3 − 8x2 13.
Like term's coefficient are added in addition of algebraic terms. The simplified form of the given expression is [tex]x^3 + 8x^2 + 13[/tex]
What are like terms?Those terms which have same variables raised with same power.
For example, [tex]5t^3[/tex] and [tex]6t^3[/tex] are like terms since variable is same, and it is raised to same power 3.
For example [tex]x^3[/tex] and [tex]3x^4[/tex] are not like terms as the variables are same but powers aren't same.
What are coefficients?Constants who are in multiplication with variables are called coefficients of those variables.
When can we add or subtract terms of polynomial by their coefficient's addition or subtraction?Suppose we have
[tex]5x^2 + 6y[/tex]
Since those terms are not like terms, their coefficient won't be add and the expression we've got right now, is its simplest form and cannot be reduced more.
If we have, suppose,
[tex]4x + 5x^2 + 2x[/tex]
then we see that [tex]4x[/tex] and [tex]2x[/tex] are like terms, their coefficient can be added and thus, the simplified form would be
[tex](4+2)x + 5x^2 = 6x + 5x^2[/tex]
For the given case, the considered expression is simplified as:
[tex]= > (6x^2 - 3 + 5x^3) - (4x^3 - 2x^2 - 16)\\= 6x^2 - 3 + 5x^3 -4x^3 + 2x^2 + 16\\ = 5x^3 - 4x^3 + 6x^2 + 2x^2 - 3 + 16\\= (5-4)x^3 + (6+2)x^2 + 13\\= 1.x^3 + 8x^2 + 13 \\= x^3 + 8x^2 + 13[/tex]
(variables with 1 as coefficient is not written explicitly as 1 is factor of all measurements).
Sign multiply by
[tex]-ve \times (+ve) = -ve\\(-ve) \times (-ve) = +ve\\(+ve) \times (+ve) = +ve\\(+ve) \times (-ve) = -ve[/tex]
where -ve, +ve are sign of operands and result.
Thus, the simplified form of the given expression is [tex]x^3 + 8x^2 + 13[/tex]
Learn more about simplification of expressions here:
https://brainly.com/question/26437497
Find the percent change. Round to the nearest tenth of a percent when necessary.
From 33 to 34.
Answer:
3.03%
Step-by-step explanation:
Given the following question:
[tex]\frac{34-33}{33} \times100=34-33=1\div33=0.0303030303\times100=3.0303030303[/tex]
[tex]3.0303030303[/tex]
[tex]0<5[/tex]
[tex]3.03[/tex]
33 to 34 is a "3.03 percent increase."
Hope this helps.
Jamie has saved $8,800 and is spending $45 per
week.
a. Write an equation in slope intercept form
describing the amount of money she has (y) after x
weeks.
b. How miuch money will Jamie have after 30
weeks?
c. How many weeks will Jamie have only $250
left?
Answer:
I think the answer is 500$ in total
Step-by-step explanation:
I did it adding then subtracting.
Find a polynomial that represents the area of the triangle in inches.
Answer:
(3x²-3.5x+1)in²
Step-by-step explanation:
area of a triangle = ½(base × height)
= ½(2x-1)(3x-2)
= ½(6x²-4x-3x+2)
= ½(6x²-7x+2)
= 3x²-3.5x+1
A polynomial that represents the area of the triangle is (3x²-3.5x+1)in²
A high school championship football game was attended by 1580 fans. there were 640 were out of state fans at the game. the other fans were local. What is the ratio?
A) 15/14
B) 32/79
C) 49/79
D) 32/47
CORRECT ANSWER GETS BRANLIEST!
can any one solve this please?
and with step-by-step explanation.
Answer:
2/3
Step-by-step explanation:
Probability of choosing an eclair = 1/15
This means that there is 1 eclair in every 15 sweets.
As there are 3 eclairs, there are 3 x 15 = 45 sweets in total.
Now we can write an expression for the total number of sweets and solve for x:
Total number of sweets = 3 + (2x + 6) + x = 45
⇒ 3x + 9 = 45
⇒ 3x = 45 - 9
⇒ 3x = 36
⇒ x = 36 ÷ 3
⇒ x = 12
Now we have found x, we can determine the number of humbugs in the jar by substituting x = 12 into 2x + 6:
(2 x 12) + 6 = 30
So the probability the sweet is a humbug is 30 / 45 = 2/3
I need an answer to this math problem.
Answer:
c²
Step-by-step explanation:
Finding the factors:
7c³=7×c×c×c
8c²=2×2×2×c×c
Here,
c×c is common in both terms
Hence,GCF=c²
Two brothers, Mark and Charles, each inherit $27000. Mark invests his inheritance in a savings account with an annual return of 1.8%, while Charles invests his inheritance in a CD paying 4.8% annually. How much more money than Mark does Charles have after 1 year?
What is the quotient?
x-3) 4x2+3x+2
‼️BRAINLIEST‼️ Find the value of z in parallelogram VWXY.
Answer:
8
Step-by-step explanation:
When you multiply 9 and 3 by 8 and then you subtract you get the same answer.
Can someone please help Tysm!!
Answer:
[tex]y - 6 = 5[/tex]
equation are màthematical statements containing two algebraic expression on both sides of an "equal to (=)" sign.
Answer:
the answer is C/3
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
v/5-4-(v/4)=0
v
Simplify —
4
v v
(— - 4) - — = 0
5 4
STEP 2:
v
Simplify —
5
Equation at the end of step
2
:
v v
(— - 4) - — = 0
5 4
STEP 3:
Rewriting the whole as an Equivalent Fraction
3.1 Subtracting a whole from a fraction
Rewrite the whole as a fraction using 5 as the denominator :
4 4 • 5
4 = — = —————
1 5
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
3.2 Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
v - (4 • 5) v - 20
——————————— = ——————
5 5
Equation at the end of step 3:
(v - 20) v
———————— - — = 0
5 4
STEP 4:
Calculating the Least Common Multiple :
4.1 Find the Least Common Multiple
The left denominator is : 5
The right denominator is : 4
Number of times each prime factor
appears in the factorization of:
Prime
Factor Left
Denominator Right
Denominator L.C.M = Max
{Left,Right}
5 1 0 1
2 0 2 2
Product of all
Prime Factors 5 4 20
Least Common Multiple:
20
Calculating Multipliers :
4.2 Calculate multipliers for the two fractions
Denote the Least Common Multiple by L.C.M
Denote the Left Multiplier by Left_M
Denote the Right Multiplier by Right_M
Denote the Left Deniminator by L_Deno
Denote the Right Multiplier by R_Deno
Left_M = L.C.M / L_Deno = 4
Right_M = L.C.M / R_Deno = 5
Making Equivalent Fractions :
4.3 Rewrite the two fractions into equivalent fractions
Two fractions are called equivalent if they have the same numeric value.
For example : 1/2 and 2/4 are equivalent, y/(y+1)2 and (y2+y)/(y+1)3 are equivalent as well.
To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.
L. Mult. • L. Num. (v-20) • 4
—————————————————— = ——————————
L.C.M 20
R. Mult. • R. Num. v • 5
—————————————————— = —————
L.C.M 20
Adding fractions that have a common denominator :
4.4 Adding up the two equivalent fractions
(v-20) • 4 - (v • 5) -v - 80
———————————————————— = ———————
20 20
STEP 5:
Pulling out like terms :
5.1 Pull out like factors :
-v - 80 = -1 • (v + 80)
Equation at the end of step 5:
-v - 80
——————— = 0
20
STEP 6:
When a fraction equals zero :
6.1 When a fraction equals zero ...
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
-v-80
————— • 20 = 0 • 20
20
Now, on the left hand side, the 20 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
-v-80 = 0
Solving a Single Variable Equation:
6.2 Solve : -v-80 = 0
Add 80 to both sides of the equation :
-v = 80
Multiply both sides of the equation by (-1) : v = -80
Please help I tried doing this. It’s due tomorrow please help! Give me an explanation please by the way!
Example of sphere with a volume
[tex]\pi = 6.15[/tex]
V volumeWILL GIVE A BRAINLY AND THANKS
Answer:
190
Step-by-step explanation:
If the ratio is given 1:200
x : 38000 = 190 times the ratio 1:200
1*190 : 200 * 190
190 : 38000
The answer is 190 security personnels
Hope this helps :)
Have an excellent day!
Which statement shows how the product of (x 3)2 demonstrates the closure property of multiplication? x2 9 may or may not be a polynomial x2 6x 9 may or may not be a polynomial x2 9 is a polynomial x2 6x 9 is a polynomial.
The product of (x + 3)² demonstrates the closure property of multiplication. [tex]\rm x^{2} + 6x + 9[/tex] is a polynomial. Option D is correct.
What is polynomial?Polynomial is an algebraic expression that consists of variables and coefficients. Variable are called unknown. We can apply arithmetic operations such as addition, subtraction, etc. But not divisible by variable.
What is the closure property of multiplication?A set is closed under an operation when we do that operation on the member of the set and we always get a set member.
Given
An expression is (x + 3)²
On simplifying, we have
[tex]\rm (x + 3)(x + 3)\\\\x (x + 3) + 3 (x + 3)\\\\x^{2} +3x +3x +3^2\\\\x^{2} +6x + 9[/tex]
Thus, [tex]\rm x^{2} + 6x + 9[/tex] is a polynomial.
More about the polynomial link is given below.
https://brainly.com/question/17822016
Answer:
Option D
Step-by-step explanation:
The lengths of a lawn mower part are approximately normally distributed with a given mean Mu = 4 in. And standard deviation Sigma = 0. 2 in. What percentage of the parts will have lengths between 3. 8 in. And 4. 2 in. ? 34% 68% 95% 99. 7%.
Empirical rule is defined for normal distributions. The percentage of the parts the lengths between 3.8 inches and 4.2 inches lie is: Option B: 68%
What is empirical rule?According to the empirical rule, also known as 68-95-99.7 rule, the percentage of values that lie within an interval with 68%, 95% and 99.7% of the values lies within one, two or three standard deviations of the mean of the distribution.
[tex]P(\mu - \sigma < X < \mu + \sigma) = 68\%\\P(\mu - 2\sigma < X < \mu + 2\sigma) = 95\%\\P(\mu - 3\sigma < X < \mu + 3\sigma) = 99.7\%[/tex]
where we had
[tex]X \sim N(\mu, \sigma)[/tex]
where mean of distribution of X is [tex]\mu[/tex] and standard deviation from mean of distribution of X is [tex]\sigma[/tex]
For the given case, as it is given that the lengths of a lawn mower part are approximately normally distributed, let its lengths be tracked by a random variable X
Then, [tex]X \sim N(\mu =4, \sigma = 0.2)[/tex]
The needed percentage is
[tex]P(3.8 < X < 4.2)[/tex]
We can rewrite it as:
[tex]P(4-0.2 < X < 4 + 0.2)[/tex]
This is the percent of values lying under one standard deviation about the mean of X. Using the empirical rule, we get the percentage as:
[tex]P(\mu - \sigma < X < \mu + \sigma) = 68\%[/tex]
Thus,
[tex]P(4-0.2 < X < 4 + 0.2) = 68\%[/tex]
Thus, The percentage of the parts the lengths between 3.8 inches and 4.2 inches lie is: Option B: 68%
Learn more about empirical rule here:
https://brainly.com/question/13676793
A book sold 38,300 copies in its first month of release. Suppose this represents 6.3% of the number of copies sold to date. How many copies have been sold to date?
Round your answer to the nearest whole number.
Answer:
35,887.1 because 38300×93.7 ➗ 100
Brainliest for correct answer !! :)
f (x) = 3x - 5 g (x) =2^x Find f^-1 (x)
Answer:
f^-1(x) = (x +5)/3
also = 1/3 x + 5/3
Step-by-step explanation:
Just to be clear, the ^-1 has nothing to do with negative exponents. It just unfortunately looks the same as a negative exponent.
Anyway, there's three basic steps. First write y instead of f(x). Then switch the x and y. Then solve for y.
f(x) = 3x - 5
write y in place of f(x).
y = 3x - 5
SWITCH x and y.
x = 3y - 5
SOLVE for y.
-3y + x = -5
-3y = -x - 5
y = (-x - 5)/-3
y = (x + 5)/3
OR
y = (1/3)x + 5/3
f^-1(x) = 1/3 x + 5/3
ill give 5 stars if u correct
Answer:
A.
Step-by-step explanation:
On graph A, all 4 points (G, P, R, and S) are all in the correct order. Options B and D are easy to eliminate because we know that none of the nests are actually at the center.
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Let me know if you have any questions! Spread the love.
Answer:
A.
Step-by-step explanation:
Options A and B are the only number lines with the blue point at the right spot (You can see it is 1/2 mile away so it goes in the middle of 1 and 2). Between these 2 only number line A has the red dot in the right spot (it belongs at -0.25 which is 1 spot left of the center 0).
Find the volume of the prism.
6 m
7 m
8 m
Step-by-step explanation:
hello,
simply knowing the formula will lead you to the answer easily.
formula to find the volume of a prism:
v = bh, where b = base area and h = height.
here, in the picture given, the :
h of the prism = 6m
base area = length * width
b = 8 cm × 7 cm
b = 56 cm²
thus, using v = bh,
v = 56 × 6
v = 336 cm³
please try to understand, and let me know if you have any questions,
have an amazing day! au revoir!
The base of an inosceles triangle is 30" and the altitude to that base is 8" Find the length of one of
the two equal sides of the triangle.
ray is not part of a line.
true or false
Answer:
false
Step-by-step explanation:
ray is a part of a line
hope it helps
solve for n 50 points
a=p(1+r/n)^rn
Answer:
[tex]n = \frac{r}{\sqrt[nt]{\frac{a}{p}} -1 }[/tex]
Step-by-step explanation:
[tex]a=p(1+\frac{r}{n} )^{nt}[/tex]
[tex]\frac{a}{p} =(1+\frac{r}{n} )^{nt}[/tex]
[tex]\sqrt[nt]{\frac{a}{p}} =(1+\frac{r}{n} )[/tex]
[tex]\sqrt[nt]{\frac{a}{p}} -1 =(\frac{r}{n} )[/tex]
[tex]n = \frac{r}{\sqrt[nt]{\frac{a}{p}} -1 }[/tex]
[ Do not confuse, as there are 2 n's, one in subject and another as power. We can never make the power or in a root, the subject. In order to solve for n, we have to make the character "n", the subject. ]
Write the first 5 terms for this sequence:
Answer:
3, -6, 12, -24, 48
Step-by-step explanation:
Given:
[tex]a_1=3[/tex][tex]a_{n+1}=-2 \cdot a_n[/tex]Therefore,
[tex]a_1=3[/tex]
[tex]a_2=-2 \cdot a_1=-2 \cdot 3=-6[/tex]
[tex]a_3=-2 \cdot a_2=-2 \cdot -6=12[/tex]
[tex]a_4=-2 \cdot a_3=-2 \cdot 12=-24[/tex]
[tex]a_5=-2 \cdot a_4=-2 \cdot -24=48[/tex]
Help is it A or B? pls help
Answer:
[tex]f(x)=-(x+8)(x-2)[/tex]
Step-by-step explanation:
Start by factoring out a -1...
[tex]f(x)=-(x^2+6x-16)[/tex]
Now, we have to find two integers that multiply to get -16 and have a sum of 6:
(-2)*8=-16
-2+8=8-2=6
Using this, we can split 6x into -2x and 8x...
[tex]f(x)=-(x^2-2x+8x+16)[/tex]
Factor the first and second half separately...
[tex]f(x)=-[(x^2-2x)+(8x-16)]\\f(x)=-[x(x-2)+8(x-2)]\\[/tex]
Since both x and 8 are being multiplied by x-2, we can combine them to get...
[tex]f(x)=-(x+8)(x-2)[/tex]
Find 25% of 116 I don't know the answer
Answer:
29
Step-by-step explanation:
Let's set up an equation...
25%*116=x
We can first convert 25% to a fraction. We can convert any percentage into a fraction by simply putting the number over 100...
[tex]\frac{25}{100}*116=x[/tex]
We can simplify 25/100 by dividing the fraction by 25/25. Note we can only do this because 25/25 is equivalent to 1, therefore meaning we are dividing the fraction by 1.
[tex]\frac{1}{4}*116=x\\\frac{116}{4}=x\\x=29[/tex]
what is 1/9x5/4??? i need this so i can pass one of my math standards so i do not go to summer school HELP ME!!!!
Answer:
Step-by-step explanation:
1/9x5/4
5/36
You multiply across
5*1 = 5
9*4 = 36
5/36
Hope this helps!
PLS HELP HURRYYY (100 POINTS)
Answer:
I think that the selected answer is correct
Step-by-step explanation:
Answer:
Its step 3 which needs correction.
Step-by-step explanation:
step 3 is deeply a mistake, the step 3 correction is correct that the total sum of interior angles which is 180 degrees is equal to the angle of total straight line angle. Step 2 is correct that when angle m plus angle p sums, they mix up to 180 degrees and its adjacent supplementary angles.
Chip worked a the animal shelter for 6 hours each week for several weeks he for a total of 42 hours how many wees did chip work at the animal shelter
Answer:
Chip worked 7 weeks
Step-by-step explanation:
Set up as proportion and cross multiply to solve:
6 hours/1 week = 42 hours/x
x = 7
HELP ASAP PLEASE For the inequality, find two values for x that make the inequality true: x+3<70
A. 80
B. O
C. 70
D. 60
E. 69
Answer:
b,d
Step-by-step explanation:
80+3= 83 false
0+3=3 true
70+3= 73 false
60+3=63 true
69+3= 72 false
Hope this helps
[tex]\large\text{Hey there!}[/tex]
[tex]\large\textsf{x + 3}<\large\textsf{70}\\\\\huge\textbf{SUBTRACT 3 to BOTH SIDES}\\\\\large\textsf{x + 3 - 3}<\large\textsf{70 - 3}\\\\\huge\textbf{CANCEL out: 3 -3 because it give you 1}\\\\\huge\textbf{KEEP: 70 - 3 because it help what is}\\\huge\textbf{being compared to the x-value}\\\\\large\text{NEW EQUATION: \textsf{x}} < \large\textsf{70 - 3}\\\\\large\text{SIMPLIFY IT!}\\\\\large\textsf{x}< \large\textsf{67}\\\\\huge\textbf{Thus, your answer is: \boxed{\mathsf{x < 67}}}\huge\checkmark[/tex]
[tex]\large\textbf{It is an (O)(P)(E)(N) circle shaded to the LEFT side of the}\\\large\textbf{number starting at point 67.}[/tex]
[tex]\large\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]