a and b questions answers

Answer:-3

Step-by-step explanation:-9+6 keep change flip

-9-(-6)= -3

Answer:

-3

Step-by-step explanation:

-9 + 6 = -3

Answer: 9%

Step-by-step explanation:

18/200 equals .09 and when multiplied by 100 because percent is out of 100 you get 9

Answer:

h= -14

Step-by-step explanation:

pretend there is a 1 in front of the h making it -1h and divide it by 14(ignoring the h), making the 14 a negative

Answer: it is -14 instead of regular 14, because a positive and a negative make a negative. A negative negative make a positive, and so on.

Step-by-step explanation:

Hope this helps, plz mark brainliest

Answer:

12 is your answer.I did that and i got it right.

Step-by-step explanation:

Answer: 60

Step-by-step explanation:

since there are 3 different colour hats

4 different colour scarves and

5 different colour jacket

1 hat can be selected in 3 ways

1 scarf can be selected in 4 ways

1 jacket can be selected in 5 ways

Therefore , Tina will have 3 x 4 x 5 different combinations.

This means she will have 60 different combinations

Answer:

n = 450

Step-by-step explanation:

18%·n = 81

18·n/100 = 81

18n = 8100

n = 8100 : 18

n = 450

Answer:

81 is 18% of 450.

Step-by-step explanation:

81 ÷ 18 = 4.5

4.5 x 100 = 450

450 - 18% = 369

450 - 369 = 81

So, 18% of 450 is 81 and 81 is 18% of 450.

Answer:

(—2,—5)

Step-by-step explanation:

x² cancels ///

10x —x = —7—11

9x = —18 // divide through by 9//

x = —2 .

y = 4 —20 + 11

Final answer:

To find the height of the tree in yards, divide the height in feet by 3, the conversion factor from feet to yards.

Explanation:

The Redwood National Park is home to some of the largest trees in the world, including Hyperion, the tallest tree in the park at approximately 379 feet. To find the height of the tree in yards, we can convert the height from feet to yards by using the conversion factor of 1 yard = 3 feet.

Height in yards = Height in feet / Conversion factor

Height in yards = 379 feet / 3 feet/yard

Height in yards = 126.33 yards

Therefore, the height of Hyperion is approximately 126.33 yards.

Option A: The entire expression is a sum,

Option C: The term [tex]\frac{7}{r}[/tex] is a quotient are true statements.

Solution:

Given expression:

[tex]$\frac{7}{r}+2^{3}+\frac{s}{3}+11[/tex]

To determine which statements are true:

Option A: The entire expression is a sum.

In the given expression all are addition.

So, it is true.

Option B: The coefficient of s is 3.

No, 3 is in the denominator of s.

The coefficient of s is [tex]\frac{1}{3}[/tex].

So, the given statement is false.

Option C: The term [tex]\frac{7}{r}[/tex] is a quotient.

Yes, 7 is the dividend, r is the divisor and [tex]\frac{7}{r}[/tex] is a quotient.

So, it is true.

Option D: The term [tex]2^3[/tex] has a variable.

No, there is no variable in the term [tex]2^3[/tex].

So, it is false.

Hence Option A: The entire expression is a sum,

Option C: The term [tex]\frac{7}{r}[/tex] is a quotient are true statements.

Answer: A, C,

A: The entire expression is a sum

C: The term 7/r is a quotient

Step-by-step explanation:

The entire expression is a sum

A Sun is the result of an addition problem

The espression 7/r + [tex]2^{3}[/tex] + s/3 + 11 4 terms that we add together.

The statement "The entire expression is sum" it true

The cofficience of s is 3

A coefficient is a number used to multiply a variable.

In the expresion s/3, s is being divided by 3, or more multiplied by 1/3, not multiplied by 3.

The statement " coefficient of s is 3" is nor true

The term 7/r is a quotient.

A quotient is the result of a division problem.

the expression " The term 7/r represent 7 divided by r.

The statement "the term7/r is a quotient " is a quotient" is true.

The tern [tex]2^{3}[/tex] has a varieavle.

Avariable is a letter that stands for an uknown quatity.

There are no letters in the expresion [tex]2^{3}[/tex]

The statement "The term [tex]2^{3}[/tex] has a varieble" is Not true.

The following statements are true

Answer: He can also plant 26 flowers in each pot

Step-by-step explanation:

Answer:  [tex]average\ rate\ of\ change\approx-3[/tex]

Step-by-step explanation:

For this exercise you need to use the following formula:

[tex]average\ rate\ of\ change=\frac{f(b)-f(a)}{b-a}[/tex]

You need to find the average rate of change of the given function g(x) over the following interval:

 [tex][-1,2][/tex]

So, you can see in the table that the point whose x-coordinate is -1, is:

[tex](-1,5)[/tex]

And the point whose x-coordinate is 2, is:

[tex](2,-3)[/tex]

Knowing this, let be:

[tex]a=-1\\f(a)=5\\\\b=2\\f(b)=-3[/tex]

Now you can substitute values into the formula:

[tex]average\ rate\ of\ change=\frac{-3-5}{2-(-1)}[/tex]

Finally, evaluating, you get that the average rate of change over the interval indicated in the exercise, is:

[tex]average\ rate\ of\ change=\frac{-8}{3}\\\\average\ rate\ of\ change=-2.66\\\\average\ rate\ of\ change\approx-3[/tex]

Answer:

the coefficient of y is 5 the constant is 9

Step-by-step explanation:

7y minus 2y is 5y. so the coefficient is 5

3+6 is 9 the contant is 9

Answer:

[tex]m=-\frac{39}{80}[/tex]

Step-by-step explanation:

we have

[tex]\frac{2}{5}=2m+\frac{11}{8}[/tex]

Solve for m

That means ----> Isolate the variable m

Multiply both sides by 40 to remove the fractions

Note: 40=(8)(5)

[tex](40)\frac{2}{5}=(40)2m+(40)\frac{11}{8}[/tex]

[tex]16=80m+55[/tex]

subtract 55 both sides

[tex]16-55=80m\\-39=80m[/tex]

Divided by 80 both sides

[tex]m=-\frac{39}{80}[/tex]

Answer:

x=2, y=8. (2, 8).

Step-by-step explanation:

y-2x=4

2x+3y=28

----------------

y=2x+4

2x+3(2x+4)=28

2x+6x+12=28

8x+12=28

8x=28-12

8x=16

x=16/8

x=2

y-2(2)=4

y-4=4

y=4+4

y=8

Answer:

A. Only Khaled

Step-by-step explanation:

The teachers equation is:

[tex]-10x-7y=5[/tex]

[tex]12x-8y=-4[/tex]

If a row operation on the teacher's equation results in any of the system of the students' equation then the two systems are equivalent and will have the same solution.

For instance:

Let's maintain the bottom equation and add both equation to replace the top equation:

[tex]-10x+12x-7y-8y=5+-4\\12x-8y=-4[/tex]

This results in Khaled's equation:

[tex]2x-15y=1\\12x-8y=-4[/tex]

On the other hand we cannot perform a row operation to obtain Miku's equation

Answer:83÷3=27.6 or 27.667

Step-by-step explanation:

The number 83 divided by 3 equals 27 remainder 2.

The long division refers to the mathematical method for dividing large numbers into multiple smaller groups or parts. The number which we divide into small groups is called the dividend, the number by which we divide is called the divisor.

     27

-------------

3 | 83

   - 81

    -----

       20

       - 18

       -----

          20

          - 18

          -----

             2

Therefore, the number 83 divided by 3 equals 27 remainder 2.

Read more about long division

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Option D: A(n) = a + (n – 1) d

Solution:

To identify the formula for finding the nth term of an arithmetic sequence.

Let a be the first term.

d be the common difference of the each term.

n be the term of the number.

A(n) be the nth term of the arithmetic sequence.

Arithmetic formula:

A(n) = a + (n – 1) d

Example: 1, 4, 7, 10, 13, 16, 19, ...

This is a arithmetic sequence.

a = 1, d = 4 – 1 = 3.

To find the 5th term:

Substitute this in the above formula, we get

A(n) = a + (n – 1) d

A(5) = 1 + (5 – 1) 3

       = 1 + 4(3)

       = 1 + 12

A(5) = 13

In the given sequence 5th term is 13.

Hence Option D is the correct answer.

A(n) = a + (n – 1) d

Answer:

A(n) = a + (n - 1)d

Step-by-step explanation:

got it right on quiz

The expression for the total number of miles she drove in two weeks is 254 + c miles

Solution:

Given that,

Last week katlin drove 254 miles

This week she drove c miles

To find: Expression for the total number of miles she drove in two weeks

From given,

Last week = 254 miles

This week = c miles

Therefore,

Total miles in two weeks = last week + this week

Total miles in two weeks = 254 + c

Thus the expression for the total number of miles she drove in two weeks is 254 + c miles

Answer:

40/7

Step-by-step explanation:

-5 5/7=-40/7

-x=-40/7

x=40/7

Answer:

22,500 square feet

Step-by-step explanation:

we know that

The area of a square is equal to

[tex]A=b^2[/tex]

where

b is the length side of the square

in this problem we have

[tex]b=150\ ft[/tex]

substitute

[tex]A=(150)^2\\A=22,500\ ft^2[/tex]

Answer:

35

Step-by-step explanation:

Answer:

45.8

Step-by-step explanation:

We need to find the surface area for this entire figure!

We can see that this is a pyramid here - we must find the area of the 3 triangles and the base triangle at the bottom.

The 3 triangles building up the pyramid are all equal to each other.

To find the area of a triangle, use  [tex]Area = base*height/2[/tex]

[tex]Area=3(\frac{5*7}{3} )+(\frac{5*4.3}{2})\\Area=35+10.75=45.75[/tex]

Round to the nearest tenth: 45.75 -> 45.8

The answer is D, I know this because I just did the USATESTPREP

Step-by-step explanation:

b)

|2x−3y| if x=0.5; y=−0.7

Substitute: |2(0.5)-3(-0.7)|

Simplify: |1+2.1|

Simplify: |3.1|

Since it is an absolute value, it will always be positive: 3.1

d)

|−3 |x| +2x−1| if x=−5

Substitute: |-3(|-5|)+2(-5)-1|

Absolute value is positive: |-3(5)+5(-5)-1|

Simplify: |-15-25-1|

Simplify: |-41|

Absolute value always positive: 41

Answer for the first question:

[tex]a)3a+5b~,when~a=-2;b=-1[/tex]

[tex]=(3)(-2)+(5)(-1)[/tex]

[tex]=-11[/tex]

Answer for the second question:

[tex]b)2x-3y~,when~x=0.5;y=-0.7[/tex]

[tex]=(2)(0.5)-(3)(-0.7)[/tex]

[tex]=3.1[/tex]

Answer for the third question:

[tex]c)4a+8-a,~when~a=-2[/tex]

[tex]=(4)(-2)+8-(-2)[/tex]

[tex]=2[/tex]

Answer for the fourth question:

[tex]d)-3x+2x-1,~when~x=-5[/tex]

[tex]=(-3)(-5)+(2)(-5)-1[/tex]

[tex]=4[/tex]

Answer:

we can express its easy like square of 2 is 4 then it 8 less than

Answer:

x=5

Step-by-step explanation:

we have

[tex]3(x+2)+x=2x+16[/tex]

Solve for x

Distribute left side

[tex]3x+6+x=2x+16[/tex]

Combine like terms left side

[tex]4x+6=2x+16[/tex]

Group terms that contain the same variable

[tex]4x-2x=16-6\\2x=10\\x=5[/tex]

therefore

For x=5

The equation is true

Verify

substitute the value of x=5 in the original expression and evaluate

[tex]3(5+2)+5=2(5)+16[/tex]

[tex]3(7)+5=10+16[/tex]

[tex]26=26[/tex] ----> is true

Answer:

c?

Step-by-step explanation:

To find the number of blue fish, we set up an equation based on the given information, solving which indicates there are 18 blue fish in the tank (option A).

The question is a word problem asking to find out the number of blue fish in a tank given the total number of fish and the relationships between the counts of different colored fish. We can set up algebraic expressions to solve for the number of blue fish. Let the number of blue fish be represented by x. According to the problem, there are six more yellow fish than blue, which we can express as x + 6. There are four fewer black fish than blue, which we can say is x - 4. The total number of fish is given as 56.

So, the equation we can set up is:

x + (x + 6) + (x - 4) = 56

Simplifying the equation, we get:

3x + 2 = 56

Solving for x, we subtract 2 from both sides to get:

3x = 54

And then divide by 3:

x = 18

Thus, there are 18 blue fish in the tank, which corresponds to option A.

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