Answer:
One solution
Step-by-step explanation:
The slope and y-intercept is different on both sides
The given equation has one solution which is the variable x = -27.
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that is equal.
The equation is given in the question,
0.4(5x – 15) = 2.5(x+3)
Multiply both sides by 10
0.4(5x – 15) × 10=25(x+3) × 10
Refine
4(5x–15) =2.5(x+3)
Expand 4(5x-15): 20x-60
Expand 25(x+3): 25x+75
20x-60 = 25x+75
Add 60 to both sides
20x-60+60 = 25x+75 +60
Simplify the above equation,
20x=25x+135
Subtract 25x from both sides
20x-25x = 25x+135-25x
-5x = -135
Divide both sides by -5
-5x / -5 = -135/5
x = -27
Therefore, the given equation has one solution which is the variable x = -27.
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Sorry my brain is fried...
Help me?
its 1:12 am please help me.... please answer all 4 please
Answer:
1:D,2
2:B:She found that -3(9) is positive
3:D:Evaluated -2^2 as -4
4:Confused, is there supposed to be supplemental info?
Step-by-step explanation:
Answer:
hey.. hi.. emme.. is this morning??? if it is GOOD MORNING ☺️
Please hlep me l would appreciate it so much l mom going to give me whopping please hlep me am scared
Answer:
I think it's the first one
Step-by-step explanation:
if y(x)=4x what is x when y(x)=4?
Answer:
1
Step-by-step explanation:
y(x)=4x
y(x)=4
<=>4x=4
<=>x=1
For a scale to pass inspection, the scale's reading can vary by at most
0.1% from the actual mass of an object on the scale. A test mass has
an exact mass of 250.00 grams. In what range must the scale's reading
be for the scale to pass inspection?
Answer:
I think its 249.99 to 250.01
Step-by-step explanation:
The range of the variation for the scale will be 249.75 grams to 250.25 grams.
What is the percentage?The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.
Given that for a scale to pass inspection, the scale's reading can vary by at most 0.1% from the actual mass of an object on the scale. A test mass has an exact mass of 250.00 grams.
The variation of the mass will be calculated as:-
Variation = 250 x 0.1% = ( 250 x 0.1 ) / 100 = 0.25
Higher variation = 250 + 0.25 = 250.25 grams
Lower variation = 250 - 0.25 = 249.75 grams
Therefore, the range of the variation for the scale will be 249.75 grams to 250.25 grams.
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what’s the percent decrease from 90 to 70 in sales
Answer:
22%
Step-by-step explanation:
So First we subtract 90 and 70 = 20
Then we divide 20 by 90 = which gives us approximately 0.22 then we turn that into a percent by moving the decimal point 2x to the right.
So In conclusion, the percent decrease is 22%
Remember the formula is:
amount of change ÷ by the original amount
solve for the proportion (type integer or simplified fraction)
Answer:
b = [tex]\frac{7}{5}[/tex] = 1.4
Step-by-step explanation:
[tex]\frac{2b - 3 }{5}[/tex] = [tex]\frac{b - 2}{15}[/tex]
15(2b - 3) = 5(b - 2)
30b - 45 = 5b - 10
25b = 35
5b = 7
b = [tex]\frac{7}{5}[/tex] = 1.4
Check the answer:
[tex]\frac{2(1.4)-3}{5}[/tex] = [tex]\frac{1.4-2}{15}[/tex]
- [tex]\frac{0.2}{5}[/tex] = - [tex]\frac{0.6}{15}[/tex]
- 0.04 = - 0.04
Melinda earns $48 for every 3 lawns she mows in her neighborhood. She wants to buy a skateboard that costs $208. How many lawns will Melinda have to mow to be able to buy the skateboard?
Enter the correct answer in the box.
Answer:
13 lawns
Step-by-step explanation:
Find out how much money Melinda earns for 1 lawn mowed (variable x represents money earned):
3x = 48
Isolate the variable by dividing both sides by 3
3x ÷ 3 = 48 ÷ 3
1x = 16
x = 16
She earns $16 per mowed lawn
Set up equation to find out how many lawns she needs to mow to earn $208 (variable y represents lawns mowed):
16y = 208
Isolate the variable by dividing both sides by 16
16y ÷ 16 = 208 ÷ 16
1y = 13
y = 13
She needs to mow 13 lawns to earn $208
Answer: The answer is 13 lawns... Have a great day!
PLEASE HELP ME I NEED IT
Answer:
B x = 10
Step-by-step explanation:
Done hope it helps :D
18 Points! K12 Student struggling with deadline!
Which is the 1st step in solving this set of linear equations by the Substitution Method?
y = x + 4 x = 8
A-You can start with either one of these other choices
B-Substitute the 8 in for the x in the 1st equation
C-Substitute the x + 4 into the 2nd equation
Answer:
B.
Step-by-step explanation:
The easiest way is to substitute 8 for x in the first equation,
solve for X 5x(x+3)=x(5x-3)+36
Answer:
x=2
Step-by-step explanation:
5x(x+3)=x(5x-3)+36
5x^2+15x=5x^2-3x+36
-18x+36=0
36=18x
x=2
10pts and I’ll mark brainliest!
(Also EXPLAIN the reasoning you used to find the expression)
9514 1404 393
Answer:
x + 15
Step-by-step explanation:
The overall length is 2x+15, and the dotted side is shown to be x shorter than that. Its length is ...
2x+15 - x = x + 15 . . . . length of dotted side
What is the quotient of Three-fourths and 5-6?
Answer:
9/10
Step-by-step explanation:
3/4 / 5/6. Original Mathematical
Expression.
3/4 6/5. Multiply the reciprocal
3/2. 3/5. Simplify
3* 3/2 *5. Multiply
Answer:9/10 or 0.9
Refer to the table and exercise 11 suppose in the sixth grade 3/4 of the students want a career in either teaching or STEM how many six grade students did not choose a career in teaching or stem
Answer: where is the table?
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
bye I'm going back to pre-k
who wanna come with me
Answer:
Bring me with you please
Step-by-step explanation:
Need help please due pretty soon
Answer:
Im going to have to say 8
Step-by-step explanation:
I hope this helps you !
Answer:
B
Step-by-step explanation:
4 ≤ y + 2 ≤ -3(y-2)+24
Answer:
[tex]4\le \:y+2\le \:-3\left(y-2\right)+24\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:2\le \:y\le \:7\:\\ \:\mathrm{Interval\:Notation:}&\:\left[2,\:7\right]\end{bmatrix}[/tex]
The solution graph is also attached.
Step-by-step explanation:
Given
[tex]4\:\le \:y\:+\:2\:\le -3\left(y-2\right)+24[/tex]
as
[tex]\mathrm{If}\:a\le \:u\le \:b\:\mathrm{then}\:a\le \:u\quad \mathrm{and}\quad \:u\le \:b[/tex]
so
[tex]4\le \:y+2\quad \mathrm{and}\quad \:y+2\le \:-3\left(y-2\right)+24[/tex]
solving the intervals
as
[tex]4\le \:y+2[/tex]
[tex]y+2\ge \:4[/tex]
subtract 2 from both sides
[tex]y+2-2\ge \:4-2[/tex]
[tex]y\ge \:2[/tex]
also
[tex]y+2\le -3\left(y-2\right)+24[/tex]
[tex]y+2\le \:-3y+30[/tex]
subtract 2 from both sides
[tex]y+2-2\le \:-3y+30-2[/tex]
[tex]y\le \:-3y+28[/tex]
Add 3y to both sides
[tex]y+3y\le \:-3y+28+3y[/tex]
[tex]4y\le \:28[/tex]
Divide both sides by 4
[tex]\frac{4y}{4}\le \frac{28}{4}[/tex]
[tex]y\le \:7[/tex]
so combining the intervals
[tex]y\ge \:2\quad \mathrm{and}\quad \:y\le \:7[/tex]
Merge overlapping intervals
[tex]2\le \:y\le \:7[/tex]
Therefore,
[tex]4\le \:y+2\le \:-3\left(y-2\right)+24\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:2\le \:y\le \:7\:\\ \:\mathrm{Interval\:Notation:}&\:\left[2,\:7\right]\end{bmatrix}[/tex]
The solution graph is also attached.
Help me with math please
Answer:
B. 1/6
Step-by-step explanation:
6000 is what percent of 6046?
I'll explain more if you are confused.
Answer:
362760%
Step-by-step explanation:
sorry if its wrong, it might have decimals or something but yeah.
can you find the slope from (4,5) (9,11)
(please asap)
Answer:
Step-by-step explanation:
The slope of (4,5)(9,11) is 6/5
Answer:
5/6 or 1 1/5 and pls read explanation
Step-by-step explanation:
ok so the diff between (x,y) and (x,y) is here:
the diff between x and x (4 and 9) is +5. the diff between y and y (5 and 11) is +6. you take the reciprocal of 5/6 and that is 6/5 or 1 1/5
Please help with the question below in the picture
Answer:
10.5 cm or 1.5 cmStep-by-step explanation:
Case 1
O in between A and B
OA = 12 cm, OB = 9 cmDistance between midpoints:
12/2 + 9/2 = 10.5 cmCase 2
B in between O and A
OA = 12 cm, OB = 9 cmDistance between midpoints:
12/2 - 9/2 = 1.5 cmdoes 12/15 and 8\10 have the same value
Answer:
as 12 and 15 can be divided by 3, I'll simplify it to 4/5 and 8 and 10 can be divided by 2 and it'll be 4/5 so they have the same value, see that by simplifying it
Answer:
yes
Step-by-step explanation:
12 divided by 15 equals 0.8
8 divided by 10 equals 0.8
I need them like rn please and thank you
Answer:
The value of x is 9
Step-by-step explanation:
The measure of the exterior angle at a vertex of a triangle equals the sum of the measures of the two opposite interior angles to this vertex
In the given figure
∵ ∠DFG is an exterior angle at vertex F
∵ The angles of measures (5x - 7) and 89° are the opposite interior
angles to the vertex F
∴ m∠DFG = (5x - 7) + 89
∵ m∠DFG = 14x + 1
→ Substitute it in the equation above
∴ 14x + 1 = 5x - 7 + 89
→ Add the like terms in the right side
∵ 14x + 1 = 5x + 82
→ Subtract 1 from both sides
∵ 14x + 1 - 1 = 5x + 82 - 1
∴ 14x = 5x + 81
→ Subtract 5x from both sides
∴ 14x - 5x = 5x - 5x + 81
∴ 9x = 81
→ Divide both sides by 9
∴ x = 9
∴ The value of x is 9
Find the perimeter of the given figure.
16
16
Plz HURRY
Answer:
44
Step-by-step explanation:
I think I might be wrong
Answer:
perimeter is 44
Step-by-step explanation:
PLEASE HELP ME ASAP (picture attached)
7.
A circle with a radius of 9 cm is divided into five equal sectors.
The diagram shows one of the sectors, AOB.
The chord AB is drawn.
B
9 cm
A
72
Find the area of the shaded region.
im learning this in maths too but my maths teacher said
"tita=a times by πr²over 360 divided by angle then times by 18 cuz diameter=1 but radius is half of diameter
i am so sorry if this doesnt work
Noah and Diego left the amusement park’s ticket booth at the same time. Each moved at a constant speed toward his favorite ride. After 8 seconds, Noah was 17 meters from the ticket booth, and Diego was 43 meters away from the ticket booth.
WILL GIVE BRAINEST IF YOU TELL ME how can you tell Diego’s is the blue line and Noah’s is the black?
Answer:
because when Noah was 17 Diego was 43 so his is higher so his would be more upstraight than Noah's
find the total cost : $20 meal; 9% tax on meal; 20% tip on meal
Answer:
the meal cost $25.8 in total.
Step-by-step explanation:
9% of 20 is 1.8
20% of 20 is 4
20 + 1.8 + 4 = 25.8
May I have brainliest please? :)
Mike and Ike are twins. Mike’s age is one more than twice a certain number. Ike’s age is 10 less than triple that same number. Find their ages.
Please Help ASAP! I need this problem to be solved quick.
Answer:
{5,6}
Step-by-step explanation:
Because try to put instead of the letter N the numbers and see
Anyone know this problem
Answer:
38 degrees
Step-by-step explanation:
Alternate Exterior Angles Theorem
What are the zeros of this function