Answer:
2b + 3n = £15.50
4b + 1n = £13.50
2 ( 2b + 3n = 15.50 )
4b + 6n = 31.00
4b + 6n = 31.00
- 4b + 1n = 15.50
5n = 15.50
n = 3.1
subtitue n in to the equation
2b + 9.3 = £15.50
2b = £6.20
b = 3.10p
Step-by-step explanation:
both the bracelets and necklace cost £3.10
The cost of one bracelet is $2.50
How much is the cost of one bracelet?b = cost of the bracelet
n = costs of necklace
⇒ 2b + 3n = 15.50
⇒ 4b+1n = 13.50
Multiply the first equation by -2
⇒ -4b - 6n = -31
⇒ 4b + n = 13.50
---------------------------
-5n = -17.50
--------------------------
Divide each side by -5
⇒ -5n / -5 = -17.5 / -5
⇒ n = 3.50
Now we can find b
⇒ 4b + n = 13.50
⇒ 4b + 3.50 = 13.50
⇒ 4b + 3.50 - 3.50 = 13.50 -3.50
⇒ 4b = 10
Divide by 4
⇒ 4b / 4 = 10/4
⇒ b = 2.50
The cost of one bracelet is $2.50.
A system of equations comprises two or more equations and seeks common solutions to the equations.
Learn more the system of equations about here: brainly.com/question/14323743
#SPJ2
What is the equation on the graphed line (2,6) (-4,-6) answer in slope intercept form
Answer:
y = 2x + 2
Step-by-step explanation:
→ Find the gradient
[tex]\frac{-6-6}{-4-2} =\frac{-12}{-6} =2[/tex]
→ Rewrite into y = mx + c format
y = 2x + c
→ Substitute in a coordinate pair
6 = 4 + c ∴ c = 2
→ Rewrite into y = mx + c format
y = 2x + 2
An article bought for $125 was sold for $175. The percentage profit was
Answer:
Step-by-step explanation:
28.57% profit.
You're welcome.
<3
Answer:
Step-by-step explanation:
28.57%
round off to
28.6%
( URGENT PLZZ!!11!!11!!!) 1:chris works as an electrician with the central electric company. he earns 16.25 per hour with time and a half after 40 hours. if he works 43 hours Monday through Friday, how much will he earn?
2: One day Chris works from 8:00 a.m. to 1:00 p.m., lunches until 1:30, and then works until 6:00 p.m. How many hours did he work??
PLEASE ANSWER (REWARD: 100 POINTS)
What is the sum of the measures of the interior angles of a decagon?
Answer:
1,440 degrees (10 interior angles of 144 degrees)
Step-by-step explanation:
PLEASEE HELP!!!!!!!!!
Answer:
Most likely but I would say A.
Step-by-step explanation:
Because the the student is moving 1 kilometer every 3 minutes. As he is running his distance to the finish line is decreasing so we can -1/3 x. The entire race is 5 kilometers so it would be + 5 at the end of the equation. There for the answer would be A.
0.1 (10k - 15) =2Step by step
Answer:
k = 3.5
Step-by-step explanation:
0.1 (10k - 15) =2
Distribute
1k - 1.5 = 2
Add 1.5 to each side
k -1.5 +1.5 = 2+1.5
k = 3.5
Hurry I WILL BE MARKING BRAINLIST FOR HELP ASAP
Answer:
c and b should be it
Step-by-step explanation:
Please awnser wuestion in image please
Answer:
D
Step-by-step explanation:
1/25 is the same thing as [tex]5^{-2}[/tex]. So, u wantn to find whcih answer choice does not equal that. You can use the exponent multiplication rule, where x^a times x^b equals x^a+b.
for example, answer choice A would be 5^(3+-5) which is 5^-2.
the only choice that does not equal 5^-2 is D because it equals 5^2
Answer: D
Brainliest pls
If 18.2 is 100% then what is 1.7
Answer:
9.34%Step-by-step explanation:
Use ratios:
18.2 ⇒ 100%1.7 ⇒ xFind x by cross multiplication:
x = (1.7/18.2)*100%x = 9.34%Can anyone please answer this?
Answer:
y=1/4x+9
Step-by-step explanation:
Answer:
The picture is black.
Step-by-step explanation:
Reupload and I'll try to answer
What is the slope of this line?
A. 2/3
B. 1/3
C. - 2/3
D. -1/3
PLEASE HELP I WILL MARK BRAINLIEST 15 POINTS
Answer: To find the scale factor for a dilation, we find the center point of dilation and measure the distance from this center point to a point on the preimage and also the distance from the center point to a point on the image. The ratio of these distances gives us the scale factor, as Math Bits Notebook accurately states.
Step-by-step explanation:
Hope this helps!
What do i do please help me
Answer: N times 3 plus 10
Step-by-step explanation:
Solve for x.
0.4x = 2.8
Enter your answer in the box.
x =
Answer: x=7
Step-by-step explanation:
The value of x is 7.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
given:
0.4x = 2.8
Now, solving for x
Dividing both side by 0.4 we get
0.4x/ 0.4 = 2.8 / 0.4
x = 28/4
x= 7
Hence, the value of x is 7.
Learn more about equation here:
https://brainly.com/question/29538993
#SPJ2
write the equation parallel to the line 3y = 2x - 5 that goes through the point (6,5)
Answer:
3y = 2x + 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 )
Given
3y = 2x - 5 ( divide terms by 3 )
y = [tex]\frac{2}{3}[/tex] x - [tex]\frac{5}{3}[/tex] ← in slope- intercept form
with slope m = [tex]\frac{2}{3}[/tex]
Parallel lines have equal slopes , then
y = [tex]\frac{2}{3}[/tex] x + c ← is the partial equation
To find c substitute (6, 5 ) into the partial equation
5 = 4 + c ⇒ c = 5 - 4 = 1
y = [tex]\frac{2}{3}[/tex] x + 1 ( multiply through by 3 to clear the fraction )
3y = 2x + 3 ← equation of parallel line
The ratio of the length and breadth of a badminton court is 11:5. If the length of the court is 44 feet, then what is its breadth? help please! I need it!
Answer:
20ft
Step-by-step explanation:
Quick reasoning: pick the ratio and start adding both values as many times as you reach the value you need: You start with 11:5, add once, you get 22:10; add again, you get 33:15. Add one final time, you get 44:20.
More rigorous: You want to see how many times the length fit in the ratio: that means dividing the length by the first term of the ratio, or 44/11 = 4. At this point you multiply the second term by the number you just found, ie 5x4= 20.
3 friends went to lunch and total was $38.49. how much would it have cost 7 friends
Answer:
89.81
Step-by-step explanation:
divide 38.49 by 3 and you get 12.83
then multiply 12.83 by 7
Answer:
Step-by-step explanation:
Cost of lunch for 3 persons = $ 38.49
Cost of lunch for 1 person = 38.49 ÷ 3 = $ 12.83
Cost of lunch for 7 persons = 12.83 * 7 = $ 89.81
x - 8 = -12
Solve for x
x = ?
[tex]\\ \sf\longmapsto x-8=-12[/tex]
[tex]\\ \sf\longmapsto x=-12+8[/tex]
[tex]\\ \sf\longmapsto x=-4[/tex]
Done
which of the following functions could match the graph shown below
f(x) = 0.5x
f(x) = x+0.5
f(x) 2+x
f(x) 2x
Answer:
f(x) = 0.5x.
Step-by-step explanation:
The line passes through (0,0) and the slope = 3-0/6-0 = 0.5.
The ratio of elephants to tigers at the local zoo is 1:4. There are 20 elephants at the zoo. How many tigers are there?
Answer:
Ans : 80 tigers
Step-by-step explanation:
1:4
20 elephant : 80 tigers
Let the no. of tigers be x
a/q,
1 : 4 :: 20 : x
→ 1x = 4 × 20
→ x = 80
hence, no of tigers = 80
do males spend more time playing online games than females? a random sample of 100 male and females was selected. let muf be the population mean number of hours spent playing online games for females and let mum be the population mean number of hours spent playing online games for males. how should we write the alternative hypothesis?
According to the situation given, the alternative hypothesis is:
[tex]H_1: \mu_M - \mu_F > 0[/tex]
At the null hypothesis, it is tested if males do not spend more time playing than females, that is, the subtraction of the mean time spent playing by males by the mean time spent playing by females is of at most zero.
[tex]H_0: \mu_M - \mu_F \leq 0[/tex]
At the alternative hypothesis, it is tested if they spend more time playing, that is, if the subtraction is positive.
[tex]H_1: \mu_M - \mu_F > 0[/tex]
A similar problem is given at https://brainly.com/question/25600854
solve the equation H
[tex]p-5(p+4) = p-(8-p)\\\\\implies p-5p - 20 = p-8+p\\\\\implies -4p-2p = 20 -8 \\\\\implies -6p = 12 \\\\\implies p = -2[/tex]
explain why 4/9-d^2/25=0 has no real solutions
Answer:
The solution x = 0 means that the value 0 satisfies the equation, so there is a solution. “No solution” means that there is no value, not even 0, which would satisfy the equation.
Step-by-step explanation:
It is estimated that 40% of households own a riding lawn mower. A sample of 12 households is studied. What is the probability that more than 9 of these own a riding lawn mower
what is the distance between -7 and its opposite on a number line?
Answer:
14
Step-by-step explanation:
|-7|+7=14
7.5x + 3.3 = 31 equation
Answer:
3.69
Step-by-step explanation:
7.5x + 3.3 = 31
7.5x = 31 - 3.3
7.5x = 27.7
x = 27.7 : 7.5
x = 3.69
angle A=6x-35^ angle B=3x+53^ B Solve for and then find the measure of angle A :
Answer:
22
Step-by-step explanation:
Make a table for 17-20
(We are working on using y=Mx+b)
Answer:y
=
−
6
⋅
x
−
17
Explanation:
y = mx + b Calculate the slope, m, from the given point values, solve for b by using one of the point values, and check your solution using the other point values.
A line can be thought of as the ratio of the change between horizontal (x) and vertical (y) positions. Thus, for any two points defined by Cartesian (planar) coordinates such as those given in this problem, you simply set up the two changes (differences) and then make the ratio to obtain the slope, m.
Vertical difference “y”
=
y
2
–
y
1
=
−
5
–
1
=
−
6
Horizontal difference “x”
=
x
2
–
x
1
=
−
2
–
−
3
=
1
Ratio = “rise over run”, or vertical over horizontal
=
(
−
6
1
)
=
−
6
for the slope, m.
A line has the general form of y = mx + b, or vertical position is the product of the slope and horizontal position, x, plus the point where the line crosses (intercepts) the x-axis (the line where z is always zero.) So, once you have calculated the slope you can put any of the two points known into the equation, leaving us with only the intercept 'b' unknown.
1
=
(
−
6
)
⋅
(
−
3
)
+
b
;
1
=
18
+
b
;
1
–
18
=
b
;
−
17
=
b
Thus the final equation is
y
=
−
6
⋅
x
−
17
We then check this by substituting the other known point into the equation:
−
5
=
(
−
6
)
⋅
(
−
2
)
−
17
;
−
5
=
12
−
17
;
−
5
=
−
5
CORRECT!
Step-by-step explanation:
if a plane travels 1,680 miles in 3 hours how far will the plane travel in 5.5 hours ate the same rate
Answer:
3,080
Step-by-step explanation:
1680 miles is 3 hours then 1680 divided by 3 is how much 1 hour is
1 hour is 560 miles
560 times 5.5 is 3080
answer is 3,080 miles
Nayeli is saving up to buy a new video game she already has $15 and can save an additional five dollars per week using money from afterschool job how much total money would Nayeli have after six weeks of saving also write expression that represents the amount of money Nayeli would have saved in W weeks
Answer:
5w + 15
$45
Step-by-step explanation:
(6)*(5) + 15 = $45
The amount of money Nayeli would have saved in W weeks is given by the equation A = 5W + 15
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
After one week of saving, Nayeli will have:
$15 + $5 = $20
After two weeks of saving, Nayeli will have:
$20 + $5 = $25
Continuing this pattern, we can find that after six weeks of saving, Nayeli will have:
$15 + 6($5) = $45
So, after six weeks of saving, Nayeli will have $45.
Amount saved = starting amount + (amount saved per week) × (number of weeks)
Amount saved = $15 + ($5)W be equation (1)
So, the expression that represents the amount of money Nayeli would have saved in W weeks is
A = $15 + ($5) W
Hence , the equation is A = 5W + 15
To learn more about equations click :
https://brainly.com/question/19297665
#SPJ3
