Which expression is equivalent to 1.8(2x + 7) - 15?
a 1.2x
b 3.6x - 2.4
0 3.6x - 8
d 16.2x - 15
Answer:
Option B. 1.8(2x + 7) – 15 = 3.6x – 2.4
Step-by-step explanation:
1.8(2x + 7) – 15
To know which option is correct, let us simplify the above expression. This can be obtained as follow:
1.8(2x + 7) – 15
Clear bracket
1.8(2x + 7) – 15 = 3.6x + 12.6 – 15
1.8(2x + 7) – 15 = 3.6x – 2.4
Thus,
1.8(2x + 7) – 15 is equivalent to
3.6x – 2.4
Kai has $315 in her bank account. She withdraws $65 for a new jacket and another $13 for lunch with her friends. She deposits $26. What is the balance in Kai's account?
Answer:
263
Step-by-step explanation:
take the start amount 315 and subtract 78 then add 26 which would amount to 263
Answer:
$263!! :D
Step-by-step explanation:
Take $315 and subtract $65 $315 - $65 = $250
Then subtract $13 $250 - $13 = $237
Then add $26! $237 + $26 = $263!
PLEASE HELP- The time it takes for an object to follow certain distance can be calculated using the equation t=√2d/g where d represents distance and g represents the force of gravity on the object write the eqtion as a function of the distance and use 9.81 meters per second squared as the force of gravity calculate the distance the object will fall in 3 seconds label your answer.
Answer:
d= 44.145 m (meters)
Step-by-step explanation:
distance = (g*t²)/2
t=3 sec. d=? , g=9.81 m/s²
distance (d)=9.81*(3)²/2
d= 44.145 m
Which is the slope of the line y = -3x +2?
Answer:
slope = - 3
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - 3x + 2 ← is in slope- intercept form
with slope m = - 3
Answer:
-3.
Step-by-step explanation:
in the form y=mx+b, m is the slope
A makeup artist charges $40 to travel to a wedding, plus $20 per hour for the makeup she is doing at the wedding. The bride receives a bill for $100. How many hours did the makeup artist work at the wedding?
Answer: 3 hours
Step-by-step explanation:
Find the length of RE
A bag of pennies weighs 5.1 kilogram. Each penny weighs 2.5 grams. About how many pennies are in the bag?
Does 1/6, -3, V7, -6/5 or 4.5 come first when the numbers are listed from least to greatest? Explain.
Answer:
-3
Step-by-step explanation:
Given numbers:
1/6, -3, √7, -6/5, 4.5
The smallest one is chosen between the two negatives as all the rest are greater.
- 3 is smaller than - 6/5= -1.2 as 3 > 1.2So the answer is -3
Greetings from Brasil...
Let's look at each number
1/6 = 1 ÷ 6 = 0.16666....
- 3 = - 3
√7:
√4 < √7 < √9, so
2 < √7 < 3 the result of √7 is between 2 and 3
-6/5 = (- 6) ÷ 5 or 6 ÷ (- 5) = - 1.2
4.5 = 4.5
Writing the numbers in ascending order can tell:
- 3; - 6/5; 1/6; √7 and 4.5or (same values - approximated values):
- 3; - 1.2; 0.2; 2.5 and 4.5
see annex
There was 1/5 of a pie left over. The
next day Julio ate of what was left
for lunch. How much of the whole
pie did Julio cat?
Show steps of how to factor (3x^2 + 5xy - 2y^2)
(3x² + 5xy - 2y²)
3x² + 5xy - 2y² (rewrite the expression) (write 5xy as a difference)
3x² + 6xy - xy - 2y² (factor the expression) (factor out 2x from the expression)
3x x (x + 2y) -y x (x + 2y) (factor the expression) (factor out x + 2y from the expression)
Solution : (x + 2y) x (3x - y)
Alejandro has 3 times as many playlists as Derrick does. Alejandro has 24
playlists.
If d = the number of playlists Derrick has, which mathematical sentence
expresses the information above?
A. 3d = 24
B. 24d = 3
C. D/24 = 3
D. D/3 = 24
Answer:
I'm pretty sure it is A
Step-by-step explanation:
it would be 3×d=24
9. A hot air balloon ascended to a height of 35 meters 2 minutes after launch. After some time, the
balloon's altitude began to change by -3% meters every minute for 9 minutes. To avoid a tree, the Hot air
balloon flew up by 5/2 meters. What is the new altitude of the hot air balloon?
meters
Answer:
-3
Step-by-step explanation:
that it
six students out of 40 students In a class are absent what percentage of the students are absent
15%
Step-by-step explanation:
Absent= 6
Total student = 40
[tex] \frac{6}{40} \times 100 \\ \\ \frac{600}{40} = 15\%[/tex]
Step-by-step explanation:
Hey there!!
We can simply do it.
Here,
Total students =40
Absent students = 6
Now,
[tex]absent\% = \frac{no.asent}{total \: student} \times 100\%[/tex]
Keep all values.
[tex]absent\% = \frac{6}{40} \times 100\%[/tex]
= 15%
Therefore, the absent percentage is 15%.
Hopeit helps...
The length of a rectangle is 2 feet less
than three times the width. If the
perimeter is 68 feet, what are the
dimensions of the rectangle?
The length of the rectangle is 25 feet and the width of the rectangle is 9 feet.
It is given that,
Length of a rectangle is 2 feet less than three times the width.Perimeter is 68 feet.Explanation:
Let [tex]x[/tex] be the width of the rectangle. Then the length of the rectangle is [tex]3x-2[/tex].
Perimeter of a rectangle is:
[tex]P=2(\text{length}+\text{width})[/tex]
[tex]68=2(3x-2+x)[/tex]
[tex]68=2(4x-2)[/tex]
[tex]68=8x-4[/tex]
Isolate the variable.
[tex]68+4=8x[/tex]
[tex]\dfrac{72}{8}=x[/tex]
[tex]9=x[/tex]
Now, the length of the rectangle is:
[tex]3(9)-2=27-2[/tex]
[tex]3(9)-2=25[/tex]
Thus, the length of the rectangle is 25 feet and the width of the rectangle is 9 feet.
Learn more:
https://brainly.com/question/4769725
The temperature of a chemical substance in a lab was measured to be -15c the substances temperature was lowered by 19.what was the temperature of the substance after this change
Answer:. -34°c
Step-by-step explanation:
Lowering the temperature means added a negative or continuing more negative on the thermometer.
what is 7/8+3/4= with work
Answer:
(7/8×1/1) < 7/8 + (3/4×2/2) < 3/4
common denominator is 8
7/8+6/8=
7+6 = 13/8
8
13 divided by 8
1 3/8=1 5/8
7/8+3/4=1 5/8
Marlon withdrew $25 from his savings account every week for 5 weeks. Which expression is the best choice to help him determine the total amount of money he withdrew? A: (25)(−5) = −125; he withdrew $125 B: (−25)(5) = −125; he withdrew $125 C: (−25)(−5) = 125; he withdrew $125 D: (25)(5) = 125; he withdrew $125
I think it's D.
???????????????????????????????????????????
How do I simplify this? I got to 2/(3/x)-1 but I don't know how to simplify that further. Please show steps.
(f o g) (x) means that we substitute 3/x into x for f(x)
2 / ((3/x) - 1)
We have to get rid of the fraction in the denominator. Multiply both the top and bottom by x
(f o g) (x) = [tex]\frac{2x}{3 - x}[/tex]. This is as simplified as it can get.
[tex] {9}^{2} - 2(1 + 3)[/tex]
evaluate the expression
Algerbra word problem ( urgent!)
Answer:
Step-by-step explanation:
3 burgers....... 2 fries.... 17 /×2
2 burgers...... 4 fries..... 18
=>
6 burgers...... 4 fries..... 34
2 burgers...... 4 fries..... 18
____________________
6 - 2 =4 burgers
34 - 18 =16 $
=>16 :4 =4 $ one burger
17 - 3×4 =5 $ cost 2 order of fries
5 :2 =2,5 $one order of fries
How many solutions exist for the given equation?
3(x + 10) + 6 = 3(x + 12)
Explain your answer and I'll mark you Brainlyiest.
Answer:
Infinitely many solutionsStep-by-step explanation:
3(x + 10) + 6 = 3(x + 12)3x + 30 + 6 = 3x + 363x - 3x = 36 - 360 = 0This equation has infinitely many solutions as for any value of x we have same result
Answer:
Infinitely many
Step-by-step explanation:
In a factory, eggs are packaged in groups of 6 per box.
How many full boxes of eggs can the factory make with 715 eggs?
Answer:
119
Step-by-step explanation:
divide 715eggs by 6per box
you get 119 boxes
Answer:
119 boxes
Step-by-step explanation:
715 divided by 6=119.166666667 so u round to 119
what is the expression: the quantity n minus 6 cubed? (in algebraic expression)
Answer:
The equation is either n-6^3 (this is without cubing the 6, this is probably what your teacher is looking for.) or n-216 (this is what the equation looks like when 6 is cubed)
what's the algebraic expression
a pizza delivery guy earns $8 an hour and works h hours per day. he also spends $20 a day on gas. how much will the driver earn in one day
Answer:
8h -20
Step-by-step explanation:
So he earns 8$ an hour, so this is the variable
I set h = hours worked
So he earns 8*h a day
Minus the 20$ thats constant
8h - 20
Kiki works in a furniture store. Her base salary is $150 per day, plus 8% commission on her sales. Monday she sold a $350 chair, Tuesday she sold a $500 love seat, and Wednesday she sold a $1200 couch. What is the total amount she earned over these three days?
Answer:
614
Step-by-step explanation:
Answer:
614
Step-by-step explanation:
Use the distributive property to simplify the expression below:
4x + 2(x+1)
A. 6x + 1
B. 6x + 2
C. 8x + 2x + 2
D. 4x + 2x + 2
Answer:
B)
Step-by-step explanation:
You would first multiply the variable and constant with the number next to the parenthesis. So you now have 4x+2x+2. Then you add up like terms to get a final answer of 6x+2.
1.) Using appropriate properties find. -2/3×3/5+5/2-3/5×1/6
Answer:
2
Step-by-step explanation:
Multiply then add
Express the fraction 1/8 as a decimal
Answer:
0.125
Step-by-step explanation:
Answer:
answer is 0.125
Step-by-step explanation:
divide 1 by 8 :)
How can I solve this? and can you please tell me how step by step.
Answer:27/343 or 0.0787172
Step-by-step explanation:
First you need to place the exponent on both the numerator and the demonimator to make 3 to the power of 3 over 7 to the power of 3
Next you evaluate the numerator so 3 to the power of 3 is 27
and 7 to the power of 3 is 343 so your answer in fraction form is 27/343
you can also change into a decimal if you divide the fraction if you need to
Hope this helps
Answer:
[tex](\frac{27}{343})[/tex]
Step-by-step explanation:
This is what you start off with [tex](\frac{3}{7})^{3}[/tex]
[tex](\frac{3}{7})^{3}[/tex] is also equal to [tex](\frac{3}{7})(\frac{3}{7})}(\frac{3}{7})[/tex] because the original equation is [tex](\frac{3}{7})[/tex] multiplied by itself 3 times.
[tex](\frac{3}{7})(\frac{3}{7})}(\frac{3}{7})[/tex]
Multiply the first two fractions straight across
[tex](\frac{9}{49})(\frac{3}{7})[/tex]
Multiply the answer of multiplying the two fractions by [tex](\frac{3}{7})[/tex]
[tex](\frac{27}{343})[/tex]
Jalal spent a total of $74.25 on 5 roses and a vase. The vase cost $34.50.
This situation is represented by the equation 5x + 34.50 = 74.25.
What was the cost of 1 rose?
Answer:
I hope this helps.
Step-by-step explanation:
