Answer:
x=0 and x=−2
Step-by-step explanation:
Explanation:
You can factor x2+2x=0
as: x(x2)=0
Now, we can solve each term for 0:x=0 - no other work needed,
and
x+2=0
x+2−2=0−2
x+0−2x=−2
What are the x-intercepts for the function f(x)=x2 + 2x - 15?
A.
(0,-5), (0,3)
B.
(0,5), (0, -3)
C.
(5, 0), (-3,0)
D.
(-5,0), (3,0)
Answer:
D) [tex](-5,0),(3,0)[/tex]
Step-by-step explanation:
[tex]f(x)=x^2+2x-15\\\\0=x^2+2x-15\\\\0=(x+5)(x-3)\\\\x=-5,x=3\\\\(-5,0),(3,0)[/tex]
WILL MARK BRAINLIEST IF CORRECT
Answer:
answers below
Step-by-step explanation:
opposite angles are equal
angles can and mat are opposite
18x-1 = 15x+20
3x = 21
x=7
angle can = 53
angle mac = 180-53 = 127
angle mat = 65
angle tan = 180-65 = 115
Help me plz AND PLZ NO LINKS
Answer:
5. 4.2
6. 100.7
7. 14.8
8. 0.1
9. 24.192
10. 0.0996
11. 213
12. 0.156
Step-by-step explanation:
what is the midpoint of a segment with These endpoints (-6,-9) and (16,5)
[tex]~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ (\stackrel{x_1}{-6}~,~\stackrel{y_1}{-9})\qquad (\stackrel{x_2}{16}~,~\stackrel{y_2}{5}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{ 16 -6}{2}~~~ ,~~~ \cfrac{ 5 -9}{2} \right)\implies \left( \cfrac{10}{2}~~,~~\cfrac{-4}{2} \right)\implies (5~~,~-2)[/tex]
HELP PLEASE ASAP:
Find the average rate of change for the function f(x)= 3^x + 25
Using the intervals of x=2 to x=6.
PLEASE SHOW WORK, THANK YOU.
The average rate of change, of the function, between the intervals, x = 2 to x = 6 is: 180.
What is the Average Rate of Change of a Function?Average rate of change = [tex]\frac{f(b) - f(a)}{b - a}[/tex].
Given the function, [tex]f(x)= 3^x + 25[/tex],
The average rate of change using the intervals of, x = 2 to x = 6 would be solved as shown below:
a = 2
b = 6
f(a) = [tex]f(2)= 3^2 + 25[/tex] = 34
f(b) = [tex]f(6)= 3^6 + 25[/tex] = 754
Average rate of change = [tex]\frac{754 - 34}{6 - 2} = \frac{720}{4}[/tex]
Average rate of change = 180
Therefore, the average rate of change, of the function, between the intervals, x = 2 to x = 6 is: 180.
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When Jean was asked to say what the 3 in the fraction 2
3
means, Jean said that the 3 is the whole.
Explain why it is not completely correct to say that “3 is the whole.” What is a better way to say what
the 3 in the fraction 2
3
means?
Fractions are quotients of two integers
A better way to say what the 3 in 2/3 represents is that, 3 is the denominator
How to determine what 3 representsThe fraction is given as: 2/3
A fraction is represented as: Numerator/ Denominator
By comparison;
Numerator = 2Denominator = 3Hence, a better way to say what the 3 in 2/3 represents is that, 3 is the denominator
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Compare the investment below to an investment of the same principal at the same rate compounded annually.
principal: $5,000, annual interest: 8%, interest periods: 2, number of years: 19
[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$5000\\ r=rate\to 8\%\to \frac{8}{100}\dotfill &0.08\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{semiannually, thus twice} \end{array}\dotfill &2\\ t=years\dotfill &19 \end{cases} \\\\\\ A=5000\left(1+\frac{0.08}{2}\right)^{2\cdot 19}\implies A\approx 22194.067 \\\\[-0.35em] ~\dotfill[/tex]
[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$5000\\ r=rate\to 8\%\to \frac{8}{100}\dotfill &0.08\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &19 \end{cases} \\\\\\ A=5000\left(1+\frac{0.08}{1}\right)^{1\cdot 19}\implies A\approx 21578.505[/tex]
HELP PLEASE DUE DATE IS IN 30 MIN I DONT KNOW THE ANSWER I GIVE BRAINLIEST PLEASE THANK YOU
Answer: (-1/2, 0)
Step-by-step explanation: A reflection across the y-axis would simply mirror the x coordinate, making it x=-1/2 instead of x=1/2
Find an equation of the line satisfying the following conditions:
y-intercept: (0, -18); m = 4.7
[tex]\begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}\qquad \implies \qquad y=\stackrel{\stackrel{m}{\downarrow }}{4.7} x\underset{\stackrel{\uparrow }{b}}{-18}[/tex]
Change to a decimal. Round to hundredths if necessary.
5 3/8
Answer:
Step-by-step explanation:
3/8 = 0.375
7/5 = 1.4
21/7 = 3.0
5/3 = 1.666667
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A cell phone has 30% of its charge left. Which number line shows a point that represents 30%?
A.
B.
C.
D.
Answer:
C
(second to bottom)
since it has 3 out of 10 ticks marked
and 30% = 3/10
How can 1% of 800 be used to determine 28% of 800?
Enter your answers in the boxes to correctly complete the statement.
1% of 800 is
so 28% of 800 is
Answer:
3600
Step-by-step explanation:
Answer:
1% of 800 is 8
so 28% of 800 is 224
Step-by-step explanation:
Brainliest Please
please someone help me solve this question
Answer:
D. right 4, down 8
Step-by-step explanation:
The usual transformations applied to functions are ...
f(x) ⇒ f(x -h) . . . . translation right h units
f(x) ⇒ f(x) +k . . . . translation up k units
f(x) ⇒ k·f(x) . . . . . vertical scaling by a factor of k; reflection over x-axis when k < 0
f(x) ⇒ f(x/k) . . . . . horizontal scaling by a factor of k; reflection over y-axis when k < 0
In the above, "scaling" will be expansion when |k| > 1, compression when |k| < 1.
__
Your transformation is ...
x^2 ⇒ (x -4)^2 -8
f(x) ⇒ f(x -4) -8
This is translation with h=4 and k=-8. That is, it is translation right 4 units and down 8 units.
_____
Additional comment
Like much of math, it is all about matching patterns.
A $3,200.00 principal earns 7% interest, compounded annually. After 3 years, what is the balance in the account? Round to the nearest cent.
A. $1,097,600.00
B. $7,840.28
C. $67,200.00
D. $3,920.14
The balance in the account is $3,920.14
Compound interestThe formula for calculating the compound interest is expressed as
A = P(1 + r)^t
Given
P = $3,200.00 r = 7% = 0.07t = 3 yearsSubstitute
A = 3200(1+0.07)^3
A = 3,920.14
Hence the balance in the account is $3,920.14
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what is the first derivative of:
sin(x)*cos(x)/(x^2-x)
Answer:
that's the answer
Step-by-step explanation:
for the next time, dont post you derivative questions on brainly, there is a lot of websites that can solve this for you with steps.
Which is larger 10/13 or 17/18?
Answer:
17/18 because
17/18=0.944444444
4. Write an equation in slope-intercept form for the following linear relationship.
х
y
1
12
2
15
3
18
4
21
PLSSSS HELP I NEED THIS BY TOMORROW OR THE DAY AFTER PLS
Answer:
equation: y = 3x + 9
Step-by-step explanation:
first take two coordinates: ( 1 , 12 ) , ( 2 , 15 )
find slope: [tex]\frac{y2-y1}{x2-x1}[/tex]
: [tex]\frac{15-12}{2-1}[/tex]
: 3 ...........this is our slope, m
use the formula to solve or equation: y - y1 = m( x - x1 )
y - 12 = 3 ( x - 1 )
y = 3x - 3 + 12
y = 3x + 9
Find the area of the triangle, attached picture below
Answer:
Step-by-step explanation:
area of the triangle=1/2×19×6=57 cm²
Thomas has a collection of 25 coins; some are dimes and some are quarters. If
the total value of all the coins is $5.05, how many kinds of coins are there
Answer:
17 quarters and 8 dimes
Step-by-step explanation:
10dimes +25*(25-dimes)=505
With counting how much do you have of squares?
Answer:
32 × 3
96 squares..........................
A shirt and an $18 pair of pants cost $33.What is the price of the shirt?
Answer:
15 dollars
Step-by-step explanation:
Since a shirt is an unknown cost, and the pants costs 18 dollars, they costed 33 dollars overall.
In order to find the shirt price, let's subtract the price of the jeans from the total price.
33-18=15
The shirt's price is 15 dollars.
Answer:
$15
Step-by-step explanation:
$33- total cost
-$18- pants cost
=$15 for the shirt cost
In other words 33-18=x
15=x
x being the cost of the shirt!
I hope this helped!
My dad paid 72% of the cost of my shoes and I paid the rest. If my dad paid $54.18, what was the total cost of my shoes?
Answer:
$93.19
Step-by-step explanation:
first we have to identify 72% as a decimal
72/100=0.72
then we have to multiply 0.72 by $54.18.
0.72 x $54.18 = $39.01
Your dad paid $39.01, but now we have to identify how much is the total.
$54.18 + $39.01 = $93.19
(Hope I could help!)
Answer:
$93.19
Step-by-step explanation:
54.18 x .72 = 39.0096 [Round] 39.01
54.18+39.01=93.19
Total cost of your shoes is $93.19
are 3/7and 10/21 proportionate
Answer:
NOT proportional.
Step-by-step explanation:
When both fractions have the same denominator, their numerators are different. Therefore, they are NOT proportional.
Answer:
[tex] \frac{3}{7} = \frac{10}{21} [/tex]
[tex]3 \times 21 = 7 \times 10[/tex]
[tex]63 = 70[/tex]
No, 3/7 and 10/21 are jot proportionate
Fifteen ounces of paprika cost $1.87. Find the cost of 45 ounces.
Answer:
5.61
Step-by-step explanation:
Answer:
$5.61
Step-by-step explanation:
(1.87/15) x 45
=5.61
2 Rewrite the improper fractions as mixed numbers.
7/4=? 8/5=? 9/7=?? 7/6=?
Answer:
7/4 = 1 3/4
8/5 = 1 3/5
9/7 = 1 2/7
7/6 = 1 1/6
Step-by-step explanation:
The top number is the Numerator, it is the number of parts you have. The bottom number is the Denominator, it is the number of parts the whole is divided into.
If the Numerator and denominator then the fraction is a whole.
ex: 1/1, 2/2,3/3,4/4,5/5
Answer:
7/4 = 1 3/48/5 = 1 3/59/7 = 1 2/7 7/6 = 1 1/6Step-by-step explanation:
To write a fraction into mixed fraction, a fraction:
Must have its numerator greater than its denominator.Solution:
7/4 = 1 3/48/5 = 1 3/59/7 = 1 2/7 7/6 = 1 1/6Hoped this helped!
How many pieces of ribbon each 6cm long can be cut out from a roll of ribbon 24 cm long
Answer:
=4
Step-by-step explanation:
24/6
=4
so we can cut 4 pieces of each 6cm long from a roll of 24cm
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It takes light from the Sun 3.25 minutes to reach Mercury. How far away is the planet from the Sun (in km)? The speed of light, c, is 3 ✕ 105 km/s.
Answer:
66528 km
Step-by-step explanation:
1 sec = 3*105
60 sec = 1 min = 3*60*105 km
3.25 min-?
3 .25×60×105
The distance of Mercury from sun will be 585,000,000 km.
It is given that it takes 3.25 minutes to light to reach from sun to mercury.
If speed of light is 3 × [tex]10^{5}[/tex] km/sec , then calculate the distance from sun to mercury.
What will be the value of (2 × [tex]x^{2}[/tex] ) ÷ 2 ?
The value will be [tex]x^{2}[/tex] .
Distance travelled by light in 1 seconds = 3 × [tex]10^{5}[/tex] km
∵ 1 minute = 60 seconds
⇒ Distance travelled by light in 1 minute will be ;
= 60 × 3 × [tex]10^{5}[/tex] km
⇒ Distance travelled by light in 3.25 minutes will be ;
= 3.25 × 60 × 3 × [tex]10^{5}[/tex] km
= 585,000,000 km
Thus , distance of Mercury from sun will be 585,000,000 km.
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Pls answer these questions .
Answer:
1. PQ
2. PR
3. OR/OP
4. OR/OP
5. RO
Step-by-step explanation:
Espa Maya's chocolate bar is 29% cocoa. If the weight of the chocolate bar is 67 grams, how many grams of cocoa does it contain? Round your answer to the nearest tenth.
Answer:
19.4 g (rounded to the nearest tenth)
Step-by-step explanation:
Convert the percentage to a decimal by dividing by 100:
29% = 29/100 = 0.29
To find 29% of 67, multiply the decimal percentage by the total amount:
0.29 x 67 = 19.43
= 19.4 g (rounded to the nearest tenth)
which linear equation best represents the data given in the table?
answers-
y=4x-3
y=3x+4
y=3x-4
y=4x+3
