Answer:
y = 30 - 2x
Step-by-step explanation:
She must complete 30 hours, so we start at 30 hours.
Each day, she has 2 less to do after she does her service hours.
So if x = # of days, then that is -2x
Put that together,
y = 30 - 2x
please hit the heart button and crown brainliest :)
84 km / h in m / s plz help me
Answer:
23[tex]\frac{1}{3}[/tex]m/s
Step-by-step explanation:
We can change the km to m first. 1km = 1000m.
84km/h = 84 000m/h
Then, we can change the h to s. 1h = 3600s.
84 000m/h = 23[tex]\frac{1}{3}[/tex]m/s
can you answer this
Answer:
More than likely it looks like a right angle or 90 degrees so the answer is mostly 51.
Step-by-step explanation:
90 - 39 = 51
The circle below represents one whole what percent is represented by the shaded area
it is 25% hehehheheheheh
Answer:
one fourth
Step-by-step explanation:
it is split into fourths. if one is shaded, it is one fourth
The square below represents one whole
Answer:
Fraction: 23/100
Decimal: 0.23
Percent: 23%
Step-by-step explanation:
Hope this helps!
help i’ll give brainly i’m being timed
Answer: 18 and 37
Step-by-step explanation:
The answers should be 18 and 37, I am very sorry if these answers are incorrect.
A rectangle has length 4 inches and width 2 inches. If the length and width of the rectangle are each reduced by 50 percent, by what percent will the area of the rectangle be reduced?
Answer: 25%
Step-by-step explanation:
Given: A rectangle has length 4 inches and width 2 inches.
Area = Length x width
= 4 inches x 2 inches
= 8 square inches
If length is reduced by 50% , then length [tex]=0.5\times4=2\text{ inches}[/tex]
If width is reduced by 50% , then length [tex]=0.5\times2=1\text{ inch}[/tex]
Reduced area = (reduced length) x (reduced width)
= 2 inches x 1 inch
= 2 square inches
The percentage of the area of the rectangle be reduced :-
[tex]\dfrac{\text{Reduced area}}{\text{Original area}}\times100 \\\\=\dfrac{2}{8}\times100\% \\\\=25\%[/tex]
Hence, the percent of the area of the rectangle be reduced = 25%
People attending a football game either supported the home team or the visiting team. If 714 of the people attending supported the home team and 2686 supported the visiting team, what percentage supported the home team?
Answer:
21%
Step-by-step explanation:
First find the whole, the total number of attendees:
714 \text{ home} + 2686 \text{ visiting} = \color{orange}{3400} \text{ total attendees}
714 home+2686 visiting=3400 total attendees
Method 1: Set up a proportion
Set up an equation of the form:
\frac{\color{red}{\text{part}}}{\color{orange}{\text{whole}}}=
whole
part
=
\,\,\frac{\color{blue}{\text{percent}}}{100}
100
percent
Assign the variable xx to the unknown value:
\color{blue}{x}=
x=
\,\,\color{blue}{\text{percent}}
percent
The question asks what \textit{percent}percent of all the attendees is 714
Substitute the known values with the numbers given in the problem, and the unknown value with xx:
\frac{\color{red}{714}}{\color{orange}{3400}}=
3400
714
=
\,\,\frac{\color{blue}{x}}{100}
100
x
Solve for xx:
100\cdot\color{red}{714}=
100⋅714=
\,\,\color{orange}{3400}\cdot\color{blue}{x}
3400⋅x
Cross multiply
\frac{71400}{3400}=
3400
71400
=
\,\,\frac{3400x}{3400}
3400
3400x
Divide both sides by 100
\color{blue}{21\%}=
21%=
\,\,\color{blue}{x}
x
Simplify
Method 2: Find percent directly
\text{Find \(714\) out of \(3400\) as a decimal:}
Find 714 out of 3400 as a decimal:
\frac{\color{red}{714}}{\color{orange}{3400}}=
3400
714
=
\,\,0.21
0.21
\text{Convert decimal to percent:}
Convert decimal to percent:
0.21\times100=
0.21×100=
\,\,\color{blue}{21\%}
21%
What is the distance between -8/5 and -3/5
A.-1
B.1
C.11/5
D. -11/5
Answer:
1
Step-by-step explanation:
Subtract the two numbers and take the positive value ( since distance is positive)
-8/5 - (-3/5)
-8/5 + 3/5
-5/5
-1
Taking the positive value, 1
The function f is defined by f(x) = k/x+3, where k is a constant. Find k, if the graph of f passes through the point (3/4,0).
k=
Answer:
The value of k if the graph of f passes through the point (3/4,0) is [tex]\mathbf{k=-\frac{9}{4}}[/tex]
Step-by-step explanation:
We are given the function: [tex]f(x)=\frac{k}{x}+3[/tex] where k is constant.
We need to find k, if the graph of f passes through the point (3/4,0).
So, graph passes through point (3/4,0) we have x=3/4 and y =0
Putting value of x in given function we can find value of x
We have f(x)=0, and x= 3/4
[tex]f(x)=\frac{k}{x}+3\\0=\frac{k}{\frac{3}{4} }+3[/tex]
Using fraction rule: [tex]\frac{a}{\frac{b}{c} }=\frac{a.c}{b}[/tex]
[tex]0=\frac{4k}{3 }+3\\Taking \ LCM\\0=\frac{4k+9}{3}\\3*0=4k+9\\0=4k+9\\4k=-9\\k=\frac{-9}{4}[/tex]
So, The value of k if the graph of f passes through the point (3/4,0) is [tex]\mathbf{k=-\frac{9}{4}}[/tex]
Here’s picture. What’s the value of x ?
what is the probability of you picking a red apple from a bag of green apples
Answer:
0%
Step-by-step explanation:
0% because there are no red apples in a bag of green apples.
Therefore it is impossible to pick a red apple.
5 x 5^2 leaving answer in index notation
In multiplication, the exponents add up.
5.5²=5¹.5²=5³
Note:
In the extraction ,the exponents remove.
5¹⁰÷5³=5⁷
Answer:
5³
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex]
Given
5 × 5²
= [tex]5^{1}[/tex] × 5²
= [tex]5^{(1+2)}[/tex]
= 5³ ← in index form
= [ 125 ]
Please I need help ASAP
If you have $20 for a $3.00 snack and the rest to play $2.00 arcade games. At most how many games can you play ? (Setup & solve an inequality)
Answer:
8
Step-by-step explanation:
that's the most games you can play!!
hope that helps
i need help im in the zoom with my tech
Answer:
67 to the power of 14
Step-by-step explanation:
Find the determinant of the following matrix. [1 -2] [3 4]
Answer:
10
Step-by-step explanation:
[1 -2]
[3 4]
We can obtain the determinant of the above matrix by doing the following:
Determinant =(1 × 4) – (3 × –2)
Determinant = 4 – – 6
Determinant = 4 + 6
Determinant = 10
Thus, the determinant of the above matrix is 10
Factor completely
2w2 -7w-4
I’m only asking for help because I’m failing in everything. None of my family is good at math and I’m really just trying to pass tenth grade!
Answer:(2w +1) (w-4)
Solution in pic below
hey yall I'm bout to post 5 questions in like 3 minutes 100 points plus brainliest but I need step by step explanation plz and thank you
Answer:
what do you mean lol
Step-by-step explanation:
Answer:
ok
Step-by-step explanation:
ill be there
Mr , Rodríguez tried to find the slope of the line, FIND HIS ERROR AND CORRECT IT .
Answer:
23
Step-by-step explanation:
A statue that is 80 m tall stands on a 625 m2 base. An artist creates a replica using a ratio of 1:15. What is the area of the replica's base?
Answer: [tex]2.78m^{2}[/tex]
Step-by-step explanation:
given data:
height of the statue = 80m.
base of the statue = [tex]625m^{2}[/tex].
scale of the statue replica = 1:15.
solution:
[tex]= 1:15^{2} \\\\\= 1:225\\\\[/tex]
[tex]= \frac{625m^{2} }{225}[/tex]
= [tex]2.78m^{2}[/tex]
the area of the replica is [tex]2.78m^{2}[/tex]
Answer:
2.78 m^2 is the correct answer. :)
Use the remainder theorem to determine if x = 4 is a zero of the following polynomial and find the quotient and the remainder
p(x) = x2 + 11x - 60
ОА.
Yes, x = 4 is a zero of the polynomial
The quotient is x + 15, and the remainder is 0.
ОВ.
No, x = 4 is not a zero of the polynomial
The quotient is x + 15, and the remainder is 0
OC Yes x = 4 is a zero of the polynomial.
The quotient is x + 7, and the remainder is 0
D
No, x = 4 is not a zero of the polynomial.
The quotient is x + 7, and the remainder is -88
Given:
The polynomial is
[tex]p(x)=x^2+11x-60[/tex]
To find:
Whether x = 4 is a zero of the given polynomial by remainder theorem and find the quotient and remainder.
Solution:
According to the remainder theorem, if (x-c) divides a polynomial p(x), then the remainder is p(c).
Divide the polynomial by (x-4) and check whether the remainder p(x)=0 at x=4.
Putting x=4 in the given polynomial, we get
[tex]p(4)=(4)^2+11(4)-60[/tex]
[tex]p(4)=16+44-60[/tex]
[tex]p(4)=60-60[/tex]
[tex]p(4)=0[/tex]
Since, remainder is 0, therefore, (x-4) is a factor of p(x) and x=4 is a zero.
Now, on dividing p(x) be (x-4) we get
[tex]\dfrac{x^2+11x-60}{x-4}=\dfrac{x^2+15x-4x-60}{x-4}[/tex]
[tex]\dfrac{x^2+11x-60}{x-4}=\dfrac{x(x+15)-4(x+15)}{x-4}[/tex]
[tex]\dfrac{x^2+11x-60}{x-4}=\dfrac{(x+15)(x-4)}{x-4}[/tex]
[tex]\dfrac{x^2+11x-60}{x-4}=x+15[/tex]
The quotient is x+15 and remainder is 0.
Therefore, the correct option is A.
ANWSER THIS FAST PLZZZ
Answer:
- 7/11 = 0.636363
- 18/25 = -0.72
Zane has already walked 15 kilometers this week, plus he plans to walk 2 kilometers during each trip to school. How many trips will Zane have to make in all to walk a total of 41 kilometers?
Step-by-step explanation:
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Answer:
Step-by-step explanation:
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ASAP NEED FOR A TIMED HOMEWORK ASSIGMENT BRAINLIST FOR WHOEVER GETS IT RIGHT
Answer:
x^3-x^2-27x+15 The last one
Step-by-step explanation:
how can you remember slope? in a creative way
Answer:
Step-by-step explanation:
dont have a creative way but i just remember rise over run or [tex]\frac{rise}{run}[/tex]
hope this helps <3
Answer:
Slope is often denoted by the letter m; there is no clear answer to the question why the letter m is used for slope, but its earliest use in English appears in O'Brien (1844) who wrote the equation of a straight line as "y = mx + b" and it can also be found in Todhunter (1888) who wrote it as "y = mx + c".
Step-by-step explanation:
hope this helpes, i didn't really know how to answer.
If the temperature outside increases by 3 1/2 degrees every 1 1/2 hours, by how much will the temperature increase after 4 hours?
please answer in fractions.
Part 1:
What is the rate per hour of the temperature increase?
Part 2:
How much will the temperature increase after 4 hours?
Answer:
2 1/3 ; 9 1/3
Step-by-step explanation:
Given that:
Outside temperature increases by 3 1/2 degrees every 1 1/2 hours
The rate per hour of temperature increase will be :
Let rate per hour = x
3 1/2 = 1 1/2
x = 1
Cross multiply :
1 1/2 * x = 3 1/2 * 1
3x/2= 7/2
Multiply both sides by 2/3
3x/2 * 2/3 = 7/2 * 2/3
x = 14/ 6
x = 2 2/6
x = 2 1/3
Hence, outside temperature increases at the rate of 2 1/3 degrees per hour.
2.) Temperature increase after 4 hours :
(Temperature rate per hour * number of hours)
(2 1/3) * 4
(7/3) * 4
28 / 3
= 9 1/3
Hence, temperature increase after 4 hours = 9 1/3
2 1/3 ; 9 1/3
Step-by-step explanation:
Given that:
Outside temperature increases by 3 1/2 degrees every 1 1/2 hours
The rate per hour of temperature increase will be :
Let rate per hour = x
3 1/2 = 1 1/2
x = 1
Cross multiply :
1 1/2 * x = 3 1/2 * 1
3x/2= 7/2
Multiply both sides by 2/3
3x/2 * 2/3 = 7/2 * 2/3
x = 14/ 6
x = 2 2/6
x = 2 1/3
Hence, outside temperature increases at the rate of 2 1/3 degrees per hour.
2.) Temperature increase after 4 hours :
(Temperature rate per hour * number of hours)
(2 1/3) * 4
(7/3) * 4
28 / 3
= 9 1/3
Hence, temperature increase after 4 hours = 9 1/3
I know because i am in the future
(HELP) solve the system by substitution. check your answer.
4x+5y=7
x=5y+8
Draw the line and write an equation.
Line where the slope is 0, y-intercept is 5.
Complete the equation below
y=
Use x as your variable.
What is the solution to the equation One-fourth x + 2 = negative StartFraction 5 Over 8 EndFraction x minus 5? x = negative 8 x = negative 7 x = 7 x = 8
Answer:
i think its -8
Step-by-step explanation:
pls help me with this question....
Section 1
Answers:
1.6962 = 1.70 to 2 d.p. 0.007395 = 0.007 to 3 d.p. 0.4247 = 0.425 to 3 d.p. 0.007395 = 0.0074 to 4 d.p.-----------------------------
Explanation:
The abbreviation d.p. means decimal places
When rounding to 2 decimal places, we look at the digit in the third decimal place value slot (thousandths place). If the value is 5 or larger, then we round up. In the case of 1.6962, the second 6 tells us to round 1.69 up to 1.70
Something like 0.4247 does not round up because that second 4 is not 5 or larger. So we just are left with 0.42
The same logic applies to three decimal places, but you'll look in the fourth slot this time.
===================================================
Section 2
Answers:
32549 = 32500 to 3 s.f. 909520 = [tex]91\overline{0}000[/tex] to 3 s.f. (note the overline bar) 32549 = 32550 to 4 s.f. 909520 = 909500 to 4 s.f.-----------------------------
Explanation:
Recall that for a number like 32500, the 0s are not significant. This is because we can write that as 3.25 * 10^4 to convey the same idea. The only significant figures are 3, 2 and 5.
So when rounding 32549 to 3 sig figs, we just pick on the three left most values, and the rest go to 0. The 325 does not round up to 326 because the '4' isn't 5 or larger. Put another way: 32549 is closer to 32500 than it is to 32600
When rounding 909520 to three sig figs, it turns into [tex]91\overline{0}000[/tex]. The line over the first '0' tells us that zero is significant. Without this bar, the zero would be considered not to be significant. The 9095 is closer to 9100 than it is to 9000, so that's why we rounded up.
Question 1: When kevin was 6 Years old saving up his allowance 10$ Each and every single day, Now He is 23 Years old. Estimate how much money Kevin has saved in his bank account, Then Multiply That Amount (Blank)X(Blank)=How much money he has saved In total.
Question 2: If Layla And Her Friend Kason went to the movies and the tickets costed $12.99, Layla And Kason Only had 13.00 Can or can they buy the tickets, Yes Or No, And If so explain. Then The Next Day Kason forgot how to count and divide money he received 12$ From His Dad, 13$ From His Mom, 3$ From His Aunt, And 19$ From his grandmother, Add The total together, Then Divide the sum by 12. How Much Money did Kason loose? Divide How much Kason Made, Times 2 Then Divide by 14.
Answer:
he saved about 2300$
Step-by-step explanation: