Mathematics High School

−9.76d − (−12.81d) = 8.54

Answers

Answer 1

Answer:

d = 2.8

Step-by-step explanation:

−9.76d − (−12.81d) = 8.54

~Simplify

−9.76d + 12.81d = 8.54

~Combine like terms

3.05d = 8.54

~Divide 3.05 to both sides

d = 2.8

Best of Luck!

Related Questions

The math teachers at Newport High School had never golfed before. They set up a friendly competition to see who would have the best round on a full course. The teachers practiced on a driving range the week before they played.

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Answer:

hjkhj8008898

Step-by-step explanation:

use the figure to the find the measures of the numbered angles

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Answer:

sdcce

Step-by-step explanation:

Answer: h answer is A

Step-by-step explanation:

Nicole buys envelopes for her home office that come in boxes of 125 envelopes. If she buys 18 boxes, how many envelopes will she have in all?

Answers

Answer:

➩ 2,250 envelopes.

Step-by-step explanation:

Given that, Nicole buys 125 envelopes per box for her home office.

Therefore, She will have 18*125 envelopes in all

So, 18*125 is 2,250 envelopes

HELP PLZ can someone simplify this equation

Answers

7n² + 48n + 42

Combine like terms, -8n x -6n= 48n

-6 x -7= 42

Answer:

-49n^3 -n²+92n+42

Step-by-step explanation:

(7n²-8n-6)(-6n-7)

-42n^3-49n²+48n²+56n+36n+42

-49n^3 -n²+92n+42

Which expression is equivalent to (2x^2+3x-4)-(x^2-2x+4)

Answers

Answer:

3x + 2 = 14

Step-by-step explanation:

Where do I place each of them?

Answers

Answer: in their slots right below them

Step-by-step explanation:

Solve 9(8x + 5) + 7 if x = 0.25.

pls help

Answers

Answer: 70

Multiply 8 by 0.25. Add 5 multiply that by nine then add 7.

Answer:

x= 9/14 or 0.642857

Step-by-step explanation:

In a survey of 1,800 people who owned a certain type of car, 990 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?

Answers

Answer:

55%

Step-by-step explanation:

A student's math 123 grades are shown below. Category Weight Grade Homework 15% 36 Quiz 15% 60 Project 20% 75 Exam 1 15% 71 Exam 2 15% 9 Exam 3 20% 92 Calculate the student's final grade in math 123. Write your answer as a percent rounded to the nearest tenth. Don't include the percent sign.

Answers

Answer:

The student's final grade in math 123 is 59.8.

Step-by-step explanation:

Note: The data in this question are merged. They are therefore sorted before answering the question as follows:

A student's math 123 grades are shown below.

Category Weight Grade

Homework 15% 36

Quiz 15% 60

Project 20% 75

Exam 1 15% 71

Exam 2 15% 9

Exam 3 20% 92

Calculate the student's final grade in math 123. Write your answer as a percent rounded to the nearest tenth. Don't include the percent sign.

Explanation to the answer is now given as follows:

The final grade of the student in math 123 can be calculated by adding together the products Weight and Grade obtained of each category as follows:

Final grade = (15% * 36) + (15% * 60) + (20% * 75) + (15% * 71) + (15% * 9) + (20% * 92) = 59.8%

The answer is already rounded to nearest tenth as required by the question.

Since the question also states that the percent sign should not be include, the student's final grade in math 123 is therefore 59.8.

I am unable to understand how to solve this question, please send the working out.

Answers

1 Move the negative sign to the left.
(
9
x
)
1
2
8
x
−
1
2
3
(9x)

2

1

3
√
8x
−
2

1

2 Convert
(
9
x
)
1
2
(9x)

2

1

to square root.
9
x
8
x
−
1
2
3
√
9x

3
√
8x
−
2

1

3 Use this rule:
a
b
=
a
b
√
ab

=√
a

√
b

.
9
x
8
x
−
1
2
3
√
9

√
x

3
√
8x
−
2

1

4 Since
3
×
3
=
9
3×3=9, the square root of
9
9 is
3
3.
3
x
8
x
−
1
2
3
3√
x

3
√
8x
−
2

1

5 Use Multiplication Distributive Property:
(
x
y
)
a
=
x
a
y
a
(xy)
a
=x
a
y
a
.
3
x
8
3
x
−
1
2
3
3√
x

3
√
8

3
√
x
−
2

1

6 Calculate.
3
x
×
2
x
−
1
2
3
3√
x

×2
3
√
x
−
2

1

7 Use this rule:
(
x
a
)
b
=
x
a
b
(x
a
)
b
=x
ab
.
3
x
×
2
x
−
1
2
×
3
3√
x

×2x

2×3

−1

8 Simplify
2
×
3
2×3 to
6
6.
3
x
×
2
x
−
1
6
3√
x

×2x

6

−1

9 Move the negative sign to the left.
3
x
×
2
x
−
1
6
3√
x

×2x
−
6

1

10 Use Negative Power Rule:
x
−
a
=
1
x
a
x
−a
=
x
a

1
.
3
x
×
2
×
1
x
6
3√
x

×2×

6
√
x

1

11 Use Quotient Rule:
x
a
x
b
=
x
a
−
b
x
b

x
a

=x
a−b
.
\[3\times 2\sqrt[2}-\frac{1}{6]{x}\]

12 Simplify
1
2
−
1
6
2

1
−
6

1
to
1
3
3

1
.
3
×
2
x
3
3×2
3
√
x

13 Simplify.
6
x
3
6
3
√
x

Answer:

[tex](9x)^{\frac{1}{2} }.(8x^{\frac{-1}{2} })^{\frac{1}{3} }\\\\=9^{1/2}.x^{1/2}.8^{1/3}.x^{-1/2.1/3} \\\\=3.2.x^{1/2}.x^{-1/6} \\\\\\=6.x^{1/2-1/6}\\\\=6x^{1/3}[/tex]

Step-by-step explanation:

WILL PAY 40 POINTS AND BRAINLIEST!!!!
A line goes through the points (-3 1) and (-2 4)
(a) What is the slope of the line? Show your work.
(b) Write the equation of the line in point-slope form. Show your work.
(c) Write the equation of the line in slope-intercept form. Show your work.

Answers

Answer:

Part A)

The slope is 3.

Part B)

[tex]\displaystyle y-1=3(x+3)[/tex]

Part C)

[tex]\displaystyle y=3x+10[/tex]

Step-by-step explanation:

We know that the line goes through the points (-3, 1) and (-2, 4).

Part A)

To find the slope of a line given two points, we can use the slope formula:

[tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Where (x₁, y₁) and (x₂, y₂) are our two points.

So, let’s let (-3, 1) be (x₁, y₁) and let (-2, 4) be (x₂, y₂). Substitute appropriately:

[tex]\displaystyle m=\frac{4-1}{-2-(-3)}[/tex]

Evaluate:

[tex]\displaystyle m=\frac{3}{-2+3}=\frac{3}{1}=3[/tex]

Hence, the slope of our line is 3.

Part B)

Point-slope form is given by:

[tex]\displaystyle y-y_1=m(x-x_1)[/tex]

Where m is our slope and (x₁, y₁) is a point.

So, let’s substitute 3 for m.

For our point, we can use either of the two given. Let’s use (-3, 1) for consistency. So, let (-3, 1) be (x₁, y₁). Therefore:

[tex]\displaystyle y-1=3(x-(-3))[/tex]

Simplify. Hence, our point-slope form is:

[tex]\displaystyle y-1=3(x+3)[/tex]

Part C)

To rewrite into slope-intercept form, we can just solve for y from our point-slope form. So, we have:

[tex]\displaystyle y-1=3(x+3)[/tex]

Distribute on the right:

[tex]\displaystyle y-1=3x+9[/tex]

Add 1 to boths sides. So, our slope-intercept equation is:

[tex]\displaystyle y=3x+10[/tex]

·Has to be a number

Answers

Answer:

x=-4

Step-by-step explanation:

in math class , the girl to boy ratio is 8 to 6 . If there are 24 girls in the class , how many boys are there

Answers

Answer:

22 boys are in the class

Answer:

18 boys

Step-by-step explanation:

Girls: 24

Boys: ?

Ratio: 8:6

24 divided by three is 8

So 6 x 3 is 18

plz consider giving me brainliest =)

6. A graph with a
slope decreases from left to right.

Answers

Please provide an image or other when you ask a question, as you’re not gonna get a clear answer

Answer:

A graph with a slope that decreases from left to right is negative. This slope would mean as x approaches +infinity y would approach -infinity and vice versa. So as x increased y would decrease and as x decreased y would increase. This is called an inverse relationship because the values change in opposite ways.

Find an equation of a line containing the point (-6,3) and has slope
- 1/3

Answers

Answer: y=-1/3x+1

Step-by-step explanation:

To find an equation that contains the given point and has the same slope, we can plug it into slope-intercept form to find the y-intercept.

3=-1/3(-6)+b [multiply]

3=2+b [subtract both sides by 2]

b=1

Now that we know the y-intercept, we know that the equation is y=-1/3x+1.

Determine the intercepts of the line.
x-intercept(_,_)
y-intercept(_,_)

Answers

Answer:

the X - intercept is (-7,0)

the Y - intercept is (0,2)

Step-by-step explanation:

the Y intercept is where the line crosses the Y axis

the X intercept is where the line crosses the X axis

Hope this helps

Events A and B are disjointed. P(A) = 3/10; P(B) =2/5 . Find P(A or B). 1/3 7/10 1/10 9/10

Answers

Answer:

7/10

Step-by-step explanation:

Given

P(A) = 3/10P(B) = 2/5

To find

P(A or B)

Solution

P(A or B) = P(A) + P(B)P(A or B) = 3/10 + 2/5 = 3/10 + 4/10 = 7/10

Answer:

7/10

Step-by-step explanation:

A 5 inch × 7 inch photograph is placed inside a picture frame. Both the length and width of the frame are 2x inches larger than the width and length of the photograph. Which expression represents the perimeter of the frame?

Answers

Answer:

4x+12

Step-by-step explanation:

(5+2x)+(7+2x)

The perimeter would be 4x+12

Hope I helped!

Please mark Brainliest!!!

Answer:

The answer is A. 4x+12

Step-by-step explanation:

Just took the test on edge 2020 :D

Solve.

24 + d = 30

d =

Answers

Answer:

I think d = 6 because 24 + 6 = 30

Answer:

d=6

Step-by-step explanation:

HELP!! THIS WAS DUE AT MIDNIGHT, AND I STILL HAVE ANOTHER ONE THAT WAS DUE AT MIDNIGHT
144 students enter a spelling bee, but only 1/6 of the group will make it into the semi-final round, and only 2/3 of that group will make it into the final round. How many students will enter the final round of the spelling bee?
I know I'm sorry the person that made this problem did a terrible job on wording it. HELP!!!!!!

Answers

Answer:

Hey buddy, here is your answer. Hope it helps you.

Step-by-step explanation:

144 students enter a spelling bee contest.

Step 1

For the semi final round we are told that only 1/6 of the group will make it into that round.

This is calculated as

1/6 × 144/students = 24 students.

This means that only 24 students would make it into the semi final rounds.

Step 2

We are also told in the question that only 2/3 of THAT group would make it into the final round.

" THAT" group been referred to in the question means the number students that made it to the semi final round

This is calculated as

2/3 of that group( the group that made it to the semi finals)

= 2/3 × 24 students

= 16 students.

Therefore, the number of students that will enter the final round of the spelling bee is 16 students.

What is the mZACB?
O 10°
B
O 50°
(4x)
O 90°
O 180°
(7x-20)
C

Answers

Answer:

50 degrees

Step-by-step explanation:

The total sum of angles in a triangle is 180, thus the value of ∠ACB will be obtained as follows:

Given that the triangle is a right triangle, the sum of angles will be:

(4x)°+(7x-20)°+90=180

simplifying and solving for x we get:

4x+7x-20+90=180

11x=180+20-90

11x=110

dividing both sides by 11 we get:

(11x)/11=110/11

this gives us

x=10°

Thus substituting the value of x in:

∠ACB=(7x-20)°

=(7*10-20)

=70-20

=50°

Answer: 50°

Using distributive property to write an expression that is equivalent to 8(a+4)

Answers

Answer:

8a+32

Step-by-step explanation:

8(a+4)= 8a+32

Hope helps :D

Answer: 8a+32.

Step-by-step explanation:

Can someone please solve this before I get my phone taken away?

Answers

Answer:

option 1 or should be

Step-by-step explanation:

4/1.5 is 2.6 and 2/3 as a fraction is 66666 so yeah

Determine whether the ordered pair (-5,36) is a solution to the equation 2x- y/2 = -8

Answers

No.
An order pair is in the format of (x,y). Therefore, in the order pair (2,4), 2 is the x and 4 is the y. When you plug these numbers into the equations you don’t get equal answers:

4(2) = 4 - (4)
8 ≠ 0

3(2) = 26 + 5(4)
6 ≠ 46

\large{\dfrac{2.64\times 10^{-3}}{8.0\times 10^{0}}} =\ ?
8.0×10
0

2.64×10
−3

Answers

Answer:the answer is option a. it involves organizing events in the order in which they occurred.

Step-by-step explanation:

Which expression can be used to find 25 percent of 88?
StartFraction 1 Over 25 EndFraction times 88
One-fourth times 88
StartFraction 1 Over 0.25 EndFraction times 88
StartFraction 1 Over 40 EndFraction times 88

Answers

Answer: 25/100* 88

Step-by-step explanation:

Answer:

88?

Step-by-step explanation:

3 (+ y) + 2x² + (1 + y)²

Answers

Answer:

2x2+y2+5y+1

Step-by-step explanation:

3y+2x2+(1+y)2

Distribute:

=3y+2x2+y2+2y+1

Combine Like Terms:

=3y+2x2+y2+2y+1

=(2x2)+(y2)+(3y+2y)+(1)

=2x2+y2+5y+1

2x^2+y^2+5y+1

^2’s are exponents

what is 3x+12-6x≤-9 ?

Answers

Answer:

[tex]\boxed {x \geq 7}[/tex]

Step-by-step explanation:

Solve the given inequality:

[tex]3x + 12 - 6x \leq -9[/tex]

-Combine both [tex]3x[/tex] and [tex]-6x[/tex]:

[tex]3x + 12 - 6x \leq -9[/tex]

[tex]-3x + 12 \leq -9[/tex]

-Subtract both sides by [tex]12[/tex]:

[tex]-3x + 12 - 12 \leq -9 - 12[/tex]

[tex]-3x \leq -21[/tex]

-When you are dividing an integer by a negative integer, the inequality sign would change. So, divide both sides by [tex]-3[/tex]:

[tex]\frac{-3x}{-3} \leq \frac{-21}{-3}[/tex]

[tex]\boxed {x \geq 7}[/tex] (Final Answer)

Inequalities help us to compare two unequal expressions. The given inequality will be satisfied when the value of x is equal to or more than 7.

What are inequalities?

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.

The solution for the given inequality can be calculated as shown below,

3x + 12 - 6x ≤ -9

Subtract 12 from both sides of the inequality,

3x - 6x + 12 - 12≤ -9 - 12

Simplifying both sides of the inequality,

-3x ≤ -21

Divide both the sides of the inequality by -3, since division is been done with a negative integer the sign of the inequality will change,

-3x /-3 ≥ -21/-3

x ≥ 7

Hence, the given inequality will be satisfied when the value of x is equal to or more than 7.

Learn more about Inequality here:

https://brainly.com/question/19491153

#SPJ2

Instantaneous vs Average Rate of change
PLEASE AND THANKSSS:))

Answers

One is average 2 is average 3 is instantaneous 4 is average 5 is average 6is instantaneous

2x+y =8 and y=x-7 solve by substitution

Answers

Answer:

you can do this by this please vote also

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