Answer:
$11.50 is the cost for 2 pounds of walnuts
Expression: 7p - 2.50
Step-by-step explanation:
First, create an expression to represent the cost:
7p will represent the cost, since the walnuts are $7 per pound, and 2.50 needs to be subtracted from this because of the coupon for $2.50 off
So, the expression is 7p - 2.50
Use this expression to find the price for 2 pounds of walnuts:
7p - 2.50
7(2) - 2.50
14 - 2.50
= 11.50
So, the cost with the coupon will be $11.50
Translate (in terms of x) then solve the algebraic equation: The sum of a number and 3 is subtracted from 10 the result is 5.
Answer:
The answer is 2
Step-by-step explanation:
Let the number be x
10 - (3 + x) = 5
10 - 3 -x = 5
7 - x = 5
x = 7-5
x = 2
Q. What is 40% of 230?
Answer:
Its 92 :D
Step-by-step explanation:
Answer: 92
Step-by-step explanation:
Write the equation of the line that is perpendicular to the line given and through the given point. Do not use spaces in your equation. x + 2y = 6 (0, 5) *
Answer:
y = -4x + 17
Step-by-step explanation:
Using the slope intercept formula, we can see the slope of line p is ¼. Since line k is perpendicular to line p it must have a slope that is the negative reciprocal. (-4/1) If we set up the formula y=mx+b, using the given point and a slope of (-4), we can solve for our b or y-intercept. In this case it would be 17.
An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 5.9 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 160 engines and the mean pressure was 6.0 pounds/square inch. Assume the variance is known to be 0.36. A level of significance of 0.05 will be used. Determine the decision rule.
Answer:
Calculated value Z = 2.1097 > 1.96 at 0.05 level of significance
There is a difference between the means
Step-by-step explanation:
Step(i):-
Given that mean of the Population = 5.9pounds/square inch
Given mean of the sample = 6.0pounds/square inch
Given that variance of the Population = 0.36
The standard deviation of the Population = √0.36 =0.6
critical value (Z₀.₀₅)= 1.96
Step(ii):-
Null Hypothesis:H₀: x⁻ = μ
Alternative Hypothesis:H₁: x⁻ ≠ μ
Test statistic
[tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]
[tex]Z = \frac{6.0-5.9 }{\frac{0.6}{\sqrt{160} } }[/tex]
Z = 2.1097
Final answer:-
Calculated value Z = 2.1097 > 1.96 at 0.05 level of significance
The null hypothesis is rejected
There is a difference between the means
a=4-b
2a+b=1
SIMULTANEOUS EQUATIONS
help pls
Plug in for a
2(4-b)+b=1
8-2b+b=1
8-b=1
b=7
Step-by-step explanation:
Explain how to compare decimals use the numbers 6.75 and 6.732 to help you explain this process
Answer:
6.75>6.732
Step-by-step explanation:
We are given that
6.75 and 6.732
We have to compare two given decimal numbers.
First we convert like decimal number
In 6.75 there are two digits after decimal point.
In 6.732 , there are three digits after decimal point
Therefore, we put zero in 6.75 to convert like decimal number
Now, we get
6.750
Unit place of both decimal numbers are same and tenth place of both decimal number are same.
Now, hundredth place of 6.750 is 5 and hundredth place of 6.732 is 3
5 >3
Therefore, 6.750 is greater than 6.732
6.75>6.732
Answer:
person above me is correct, dk why they have a 4
Step-by-step explanation:
the distance between two towns on a map is 5 cm if the real distance between the two towns is 25 km what is the scale of the map
Answer:
50000 km per cm I think
Step-by-step explanation:
Answer:
5km to 1cm, (50000:1, if converted to centimeters).
Step-by-step explanation:
Pls helpppppp I’ll mark u
Answer:
B. It describes the distance between 6 and -6 on the number line. (wrong)
Step-by-step explanation:
What is the distance between the two coordinates points?
Colin made chocolate and vanilla cookies. He made 30
chocolate cookies. He made 2/3 as many vanilla as
chocolate. How many vanilla cookies did he make?
Answer:
20
Step-by-step explanation:
2/3 of 30 is 20
which expressions can never result in a negative real number when evaluated for any value of x? Selecta
all that apply
5
.
125 divided by 4 pls helpe
Answer:
31.25
Step-by-step explanation:
Plz help me will mark brianliest
Answer:
b. g[tex]\leq 2[/tex]
Step-by-step explanation:
just subtract 1 from 3 and you get 2
If the simple interest on $2,000 for 8 years is $1,120, then what is the interest rate?
Answer:
Step-by-step explanations :14.72%
Sean paints 8/15 of a fence in 1 hour. He paints 3/10 of the fence less in the second hour. What fraction of the fence did he paint in two hours? Did he finish the job in two hours? plsss help
show work
Answer:
Sean didn't finish the job. He painted 23/30 of the fence in two hours.
Step-by-step explanation
He didn't finish the job because 23/30 is not finished. It isn't finished because Sean is less than 23/30 of the way done. That doesn't seem done to me.
I got the fraction 23/30 by looking at the problem carefully. He painted 3/10 of the fence "less" than the first hour which was 8/15 of the fence. So that means we have to subtract 8/15 and 3/10 to get 7/30.
Now, we just figured out how much Sean painted in the second hour, and the question is asking what fraction of the fence did he paint in BOTH hours. Meaning we have to add the first and second hour to get the answer of 23/30.
Hope this helped! Have a great day!
No, he did not finish his job.
What is fraction?In Mathematics, fractions are represented as a numerical value, which defines a part of a whole. A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.
Given, Sean paints 8/15 of a fence in 1 hour,
Sean paints 3/10 part less in the second hour So, fraction he paints in the second hour = 8/15-3/10 = 16-9/30 = 7/30
So,
Paint in 2 hours = 8/15+7/30 = 16+7 / 30 = 23/30
Hence, he did not finish his job.
Learn more about fractions, click;
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There are 30 more students than adults attending a
play. Student tickets cost $3 each and adult tickets
cost $5 each. If a total of $506 in tickets were sold,
how many adult tickets were sold?
Show your work at the bottom of this page.
What is X? what is y?
how many adult tickets were sold?
how many children tickets were sold?
write 2 equations below
What is the axis of symmetry for: y=x^2+10x+26
Answer:
-5
Step-by-step explanation:
The formula for the axis of symmetry is -b/2a
Substitute the values into the formula: -(10)/2(1)
Now we get -10/2
This simplifies to x= -5
12 and k is 94 please help
Answer:
12k = 84 (Product means multiply)
k = 7
Step-by-step explanation:
12k = 84
12k ÷ 12 = 84 ÷ 12
k = 7
Answer:
K = 82
94-12=84
therefore k= 82 because, 12+82=94
Elijah asked 300 students at his school to name their favorite type of pet. The results are shown in the pie chart below.
Complete Question:
Elijah asked 300 students at his school to name their favorite type of pet. The results are shown in the pie chart below. How many students chose fish as their favorite pet?
a. 180 b. 18 c. 54 d. 30
*Check the attachment for the pie chart
Answer:
C. 54
Step-by-step explanation:
Total number of students under survey = 300
Percentage of students who chose fish as their favorite = 18%
Number of students who chose fish as their favorite pet = [tex] \frac{18}{100} * 300 [/tex]
[tex] = 18 * 3 [/tex]
[tex] = 54 [/tex]
54 students chose fish as their favorite pet.
Round 14.875 to the nearest cent
Answer:
14.87
Step-by-step explanation:
round
Answer:
14.88
Step-by-step explanation:
since the third decimal is a five you would round up.
pls help me on this
Write an integer to represent the situation.
paying a bill of $55
Answer:
I have 2
1)working for 2 hours and getting payed $55
2)you have $-55 in your bank
Step-by-step explanation:
The required integer that represents paying a bill of $55 would be "55".
What are Integers?Integers are defined as the collection of Whole Numbers Integers is represented by the symbol Z.
Integers are numbers that can be written without a fractional or decimal component, such as -3, -2, -1, 0, 1, 2, 3, and so on. They include the positive whole numbers (1, 2, 3, etc.), the negative whole numbers (-1, -2, -3, etc.), and zero.
We have to write an integer to represent the given situation.
As per the question, the integer represents the amount of money being paid in dollars.
Therefore, an integer that represents paying a bill of $55 would be "55".
To learn more about the integers click here:
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What is the value of x?
What is this! I will mark u as branilyst
why do some metals react with only steam?
Answer:
Metals which react with steam form the solid metal oxide and hydrogen gas.
In general, the more reactive the metal, the more rapid the reaction. Aluminium is unusual, because it is a reactive metal that does not react with water. Its surface forms a protective layer of aluminium oxide that keeps water away from the metal below.
The apparatus used to react a metal with steam and collect the gas produced is shown below.
Answer:
This is because some metals like aluminium, zinc, iron do not react with hot/cold water ; they react only with steam to form a metal oxide and hydrogen.
Step-by-step explanation:
Can someone help im struggling real hard
Answer:
(8x - 9)˚ = 63˚
and
(3x)˚ = 27˚
Step-by-step explanation:
heeyyyyy remember me?
Complementary angles are angles that equal 90˚, so we can create an equation:
(8x - 9) + 3x = 90
Remove the paranthesis
8x - 9 + 3x = 90
Add 9 to both sides
8x + 3x = 99
Simplify
11x = 99
divide both sides by 11
x = 9
So if we plug in x for 9 we get:
8x - 9
8(9) - 9
72 - 9
63
3x
3(9)
27
So
(8x - 9)˚ = 63˚
and
(3x)˚ = 27˚
What is the equation of the line that passes through the points (0,2) and (2,4)?
Step-by-step explanation:
[tex] \underline{ \underline{ \text{Given \: points}}} : [/tex]
( 0 , 2 ) ( 2 , 4 )Let the points ( 0 , 2 ) and ( 2 , 4 ) be A and B respectively. Let A ( 0 , 2 ) ⤑ ( x₁ , y₁ ) & B ( 2 , 4 ) ⤑ ( x₂ , y₂ ). Now , Using two point form of the equation of striaght line , we have :
[tex] \boxed{ \sf{ y - y_{1} = \frac{y_{2} - y_{1}}{x_{2} - x_{1}} (x - x_{1})}}[/tex]Plug the values :
⟶ [tex] \tt{y - 2 = \frac{4 - 2}{2 - 0} (x - 0)}[/tex]
⟶ [tex] \tt{y - 2 = \frac{2}{2} x}[/tex]
⟶ [tex] \tt{y - 2 = x}[/tex]
⟶ [tex] \tt{0 = x - y + 2 }[/tex]
[tex] \pink{ \boxed{ \boxed{ \bold{ \tt{our \: final \: answer : \boxed{ \underline{ \tt{x - y + 2 = 0}}}}}}}}[/tex]
Hope I helped ! ツ
Have a wonderful day / night ! ♡
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Part A : At Mountain Park Middle school, there are 250 seventh-grade students who are not in advanced math. Let a represent the number of seventh-grade students who are not in advanced math?
Part B: How many students are NOT in advanced math?
Answer:
How many students are NOT in advanced math? 250 students...
3. Directions: Given: f(x)= x + 2x and g()=-X-5x + 12. Find g(9) = a. 747 b. 48 C. O d.-114
Question 13, pls help & tell how to do the problem thank u
Answer:
(-4,-10) and (5,-3)
Step-by-step explanation:
To be honest, this kind of question allows for any coordinates as long as they have the slope of 9/7.
I know the slope equation is (y2-y1)/(x2-x1) = m (where m is slope)
(y2-y1)/(x2-x1) = 9/7
From this equation, find any two numbers that have a difference of 9 to the y-coordinates.
I'll go with 5 and -4 (y-coordinates)
And two integers that have a difference of 7 for the x-coordinates.
I go with -3 and -10 (x- coordinates)
So the points I got are,
(5-(-4))/((-3)-(-10)) = 9/7
5-(-4) is equal to 5+4 (2 minus signs are equal to 1 plus sign), which is 9.
(-3)-(-10) is equal to -3+10 (2 minus signs are equal to 1 plus sign), which is 7.
The two points are (-4,-10) and (5,-3)
Notice if we were to subtract 5 from -4, we would also have to subtract -3 from -10.
-4-5= -9 and -10- -3 = -10+3 = -7
-9/-7 is the same as 9/7.
Basically, (-4,-10) and (5,-3) are different coordinates and you can only switch them as coordinate 1 or 2 but not the points.
Sorry, took a while, hope I was able to help! Good Luck.
