Answer:
X = 7
Step-by-step explanation:
-9x^2 -11 = -452
+11 +11
____________
-9x^2 = -441
÷(-9) /÷ (-9)
____________
x^2 = 49
Square root for both
X = 7
[tex]2\sqrt} 5+3\sqrt} 75[/tex]
What is 16-2t=5t+9=?
Answer:
t = 1
Step-by-step explanation:
Bring the like term together.
16 - 9 = 5t + 2t
7 = 7t
t = 1
Answer:
t=1
Refer to the attachment
hope it helps
Use the Distributive Property to evaluate the expression.
5(3 + 0.4)
OA 8.4
OB 17
C 13.4
OD 15.4
Hello there! :)
The Distributive property states:
a(b+c)=ab+ac
So, we know what a is. It's 5.
b=3
c=0.4
5(3+0.4)
5*3+5*0.4
15+0.2
15.2
Hope it helps!
[tex]GraceRosalia[/tex]
Find an equation perpendicular to y = 5 and passing through (-1,2).
Answer:
x=-1
Step-by-step explanation:
A line perpendicular to y=5 is a vertical line
y =5 is a horiztonal line so perpendicular line is x= constant
The x value of (-1,2) is x = -1
So the line is x=-1
I think of a number, multiply it by three, and add four. I get twenty two.
a)
Using the statement above, form an equation.
Use the letter 'X' for the unknown number.
b)
Solve the equation.
Answer:
x = 6
Step-by-step explanation:
let the number be x , then
3x + 4 = 22 ( subtract 4 from both sides )
3x = 18 ( divide both sides by 3 )
x = 6
The unknown number is 6
Answer:
a). x3 + 4 = 22
b). x3 + 4 = 22
x3 = 18
x = 6
write an expression for the product of 6u and 6
help me pls ASAP I need it in 5mins
Answer:
500
Step-by-step explanation:
i want to help you but im not sure to my answer
Please help me to solve 8 and 9 questions. Thank you
Answer:
8 I think so 60 and ..
9. I think 5
pls give me the correct answer please please
Answer:
Step-by-step explanation:
(-4)(-4)^4 = (-4)^(1+4) = (-4)^5
answer is B
Which line has a slope of 1, and which has a slope of 2?
Use a ruler to help you graph a line whose slope is 5. Label this line a.
Answer:
Line "L" has the slope of 1 and line "K" has the slope of 2.
In order to graph a line with the slope of [tex]\frac{1}{3}[/tex] think of the numerator as the "rise" (how much you move up/down on the y-intercept) and the denominator as the "run" (how much you move to the side on the x-intercept)
Step-by-step explanation:
A slope of "1" is simply [tex]\frac{1}{1}[/tex] so you rise up one and move to the right once. This clearly demonstrated on line "L".
A slope of "2" is [tex]\frac{2}{1}[/tex] so you rise up two and move to the right once, as is demonstrated on line "K".
For the 2nd question, line "A" will have a slope of [tex]\frac{1}{3}[/tex] therefore it will move up once and then to the side three times. It will look like the image attached to this answer.
I hope this helped! Feel free to ask questions if needed!
Jessica drove 425 miles to her grandmother's house. The trip took her 6 1/4 hours.What was her average rate of speed in miles per hour.....HEEELLLLLPPP MEEEEE!!!!!!
68 miles per hour.
Simply divide the total number of miles by the time it took in a decimal format.
6 1/4 hours=6.25
425/6.25=68
Janet worked 3 hours more than David and 7 hours less than Kate. David earned $7.50 per hour, Janet earned $6 per hour, and Kate earned $9 per hour. If Kate earned $27 more than David and Janet combined, how much did each person earn?
We want to write and solve a system of equations to see how much each person earns.
What each one earned is:
Janet = $78Kate = $180David = $75Let's define:
J = number of hours that Janet worked.D = number of hours that David worked.K = number of hours that Kate worked.The information is:
"Janet worked 3 hours more than David and 7 hours less than Kate"
From this we can write:
J = D + 3
J = K - 7
We know that:
David earned $7.50 per hour.Janet earned $6 per hour.Kate earned $9 per hour.Finally, we know that Kate earned $27 more than David an Janet combined, then we can write:
$9*K = $27 + ($7.50)*D + $6*J
Then we have a system of equations:
J = D + 3
J = K - 7
$9*K = $27 + ($7.50)*D + $6*J
We can rewrite the first and second equations to get:
D = J - 3
K = J + 7
Now we can replace these two in the other equation to get:
$9*(J + 7) = $27 + ($7.50)*(J - 3)+ $6*J
Now we can solve this for J:
$9*J + $63 = $27 + $7.50*J - $22.50 + $6*J
$9*J - $7.50*J - $6*J = $27 - $63 - $22.50
-$4.50*J = -$58.60
J = (-$58.60)/(-$4.50) = 13
This means that Janet worked for 13 hours.
And with:
K = J + 7 = 13 + 7 = 20
D = J - 3 = 13 - 3 = 10
We can see that Kate worked for 20 hours and David for 10 hours.
Then each one of them earned:
Janet = 13*$6 = $78
Kate = 20*$9 = $180
David = 10*$7.50 = $75
If you want to learn more, you can read:
https://brainly.com/question/9351049
6(2x - 3) – 2(2x + 1)
Pls help !!! I really do not know who to do this
Solve the inequality.
7x - 1 <= 7
1. x <=-1
2. x <= 4
3. x <= 1
4. x>=-1
Answer:
I got x <= 8/7 which is none of the answer options given. Ask your professor about that.
Step-by-step explanation:
7x-1 <= 7
add 1 on each side
7x <= 8
Divide by 7 on both sides
7x/7 <= 8/7
Final answer
x <= 8/7
Answer:
Option #1, 3 and 4
Step-by-step explanation:
7x - 1 <= 7
Let's try them one by one:
1)
x <= -1
-7 - 1 = -8 is less than or equal to 7: True
There could be multiple answers, so let's do the other ones:
2)
x <= 4
28 - 1 = 27 <= 7: False
3)
x <= 1
7 - 1 = 6 <= 7: True
4)
x >= -1
-7 - 1 <= 7
-8 <= 7: True
Therefore, #1, 3, and 4 are correct.
Hope this helped!
Kilometers Walked for Charity
12
3
3
6 7 9 9
13
1
1
4 5
5
14
0
0 2
3
3
3
8 8 9
15
2
2
2 2
2
2
3 5 5 7
16
4
5
5 9
ON
17
3
5
Key: 123 means 12.3
a. Describe how to find the range of the data set.
b. Find the range.
Answer:what’s the lowest value?
what’s the highest value?
there is your range
Step-by-step explanation:
Identify the slope and y-intercept. Graph the linear equation.
Answer:
8. slope=1/4
y-intercept=2
9. slope=-4
y-intercept=5
10. slope=-5/2
y-intercept=1
Step-by-step explanation:
Help me please! This is urgent.
Answer:
I think W or Z but not really sure so
Answer: W
Step-by-step explanation:
help would be appreciated
ap calc (image included) please help! will give brainliest
Answer:
C
Step-by-step explanation:
Please help!!!!!! I need to make sure my answers r right
Please help with this question with steps I'll give brainliest!
Thanks
Answer:
∠ 1,3,5,7 = 32°
∠2,4,6,8,= 148°
Step-by-step explanation:
From the figure attached,
AB and CD are two parallel lines and another transverse line is intersecting these line at two distinct points.
Since, m∠1 = 32°,
∠1 and ∠4 are supplementary angles [Linear pair of angles]
m∠1 + m∠4 = 180°
32° + m∠4 = 180°
m∠4 = 180° - 32°
m∠4 = 148°
therefore,
m∠1,3,5,7 = 32°
m∠2,4,6,8,= 148°
una bicicletta che ha il raggio della ruota di 28 cm ha percorso 263 3,76 m calcola il numero di giri compiuti da ciascuna ruota
Answer:
Step-by-step explanation:
150 giri
May I please receive help?
Answer:
Parallel line, [tex]y=\frac{3x}{2} -\frac{5}{2}[/tex]
Perpendicular line, [tex]y=4-\frac{2x}{3}[/tex]
Step-by-step explanation:
For the parallel line, In the equation y=mx+c, we are trying to find c.
We know that m=[tex]\frac{3}{2}[/tex], so
we have the equation y=[tex]\frac{3x}{2} +c[/tex]
So we substitute the points we are given (3,2) into
[tex]2=\frac{3}{2}*3+c\\Thus, c= \frac{-5}{2}[/tex]
The final equation we get is
[tex]y=\frac{3x}{2} -\frac{5}{2}[/tex]
For the perpendicular line, we need to find the inverse of the slope.
The inverse of the slope [tex]\frac{3}{2} = -\frac{2}{3}[/tex]
So, we use this in our formula and also plug in the same coordinates we were given.
Therefore, we get:
[tex]2= -\frac{2}{3}*3+a\\a=4\\\\y=4-\frac{2x}{3}[/tex]
What is the slope of a line perpendicular to the line
-5/2x - 5/4y=10
Answer:
Im sorry idrk
Step-by-step explanation:
Answer:
Your answer would be 1/2
Step-by-step explanation:
−2k−(−5)+1 combine like terms
Answer:
-2k + 6
Step-by-step explanation:
[tex]-2k-(-5)+1[/tex] [tex]-2k+5+1[/tex] [tex](-2k)+(5+1)[/tex] [tex]-2k + 6[/tex]this is messed up help x_x
Answer:
Part A = C. Part B = ( t = 20 ) and ( h = 12 )
Step-by-step explanation:
the sum of two number is 1 is and their difference 56.
what are the numbers?
Answer:
your answer is attached above
hope it helps
plz mark me as brainliest
have a great day ahead
Answer:
58,60,62...
Step-by-step explanation:
Formula: Sn=n/2(2a+(n-1)d)
Sn=2, a=1, d=56
> S2=2/2(2(1)+(2-1)56)
> S2=1(2+56)
> S2=1(58)
> S2=58
58+2=60
60+2=62
r ÷ 8 + q× 3
Please I need your help now please
Answer:
r/8+3q
Explanation:
There is no value given to this equation so out final answer is a simplified version of the equation
Ignore the comment just look at the pic
Answer:
7 x 10^-7
Step-by-step explanation:
If you use scientific notation,
move the decimal 7 places to the right to find a whole number between 1 and 9.
then, count the number of spaces.
in this instance, since the original number was a decimal, you need to put a negative power of 10.
hope this helps :)
please crown me brainliest!!!
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