Which numerical expression represents 1/2 the sum of 7 and 5?

A. (7+5) x2

B. (7+5) x 1/2

C. 1/2 + 7 +5

D. 2 ÷ 7 + 5

Answer:

The angles are 54 2/3 degrees and 115 1/3 degrees

Step-by-step explanation:

make an equation for the angles x being one angle and y being the other

16+ 2x =y

Supplementary angles add to 180

x + y = 180

Fill in y with the first equation

x + 16 +2x =180

simplify

3x +16 =180

subtract 16 from both sides

3x = 164

divide both sides by 3

x = 54 2/3

Insert the value of x into the first equation then simplify

16 + 2(54 2/3) =y

16 + 109 1/3 =y

115 1/3 =y

Answer:

-5/3

Step-by-step explanation:

We have two points on the line  ( 0,2) and ( 3, -3) so we can use the slope formula to find the slope

m = ( y2 -y1)/(x2-x1)

    = ( -3 -2)/(3-0)

   = -5/3

Answer: If the dog can fit in there it’s not a problem u don’t need to know the inches that’s what she said

Step-by-step explanation:

Answer:

x=16⁰

Step-by-step explanation:

I AM NOT QUITE SURE OF THE ANSWER, but they are vertically opposite angles which in turn means that they are equal.

so you can equate the two sums they have given.

3x-3 = 2x+13

Take the numerical terms onto the right hand side and the 'x-terms' to the left hand side.

3x-2x = 13+3

That would leave you with,

x=16⁰

Answer:

[tex]5 \frac{5}{6} [/tex]

Step-by-step explanation:

[tex]1 \frac{5}{12} + 4 \frac{5}{12} = 5 \frac{10}{12} [/tex]

5 10/12 can be simplified and that would be

[tex]5 \frac{5}{6} [/tex]

Answer:

  (x, y, z) = (3, -2, 4)

Step-by-step explanation:

The attachment shows a solution using a graphing calculator where the first equation is solved for z, and that expression is substituted into each of the other two equations. The solution to that system is (x, y) = (3, -2). Using these values in the expression for z, we find ...

  z = 5 -(3 +(-2)) = 4

The solution is (x, y, z) = (3, -2, 4).

__

Your graphing calculator and/or online tools can give you the reduced row echelon form of the augmented matrix representing the system:

  [tex]\left[\begin{array}{ccc|c}1&1&1&5\\-3&-4&4&15\\2&-1&-4&-8\end{array}\right][/tex]

__

If you're solving by hand, you can do the substitution described above to eliminate z from one equation. You can eliminate z from another equation by adding the last two:

  -3x -4y +4(5 -x -y) = 15   ⇒   -7x -8y = -5

  (-3x -4y +4z) +(2x -y -4z) = (15) +(-8)   ⇒   -x -5y = 7

This pair of equations can be solved for x and y in any of the usual ways. Using the second equation to substitute for x, for example, gives you ...

  -7(-5y -7) -8y = -5   ⇒   27y = -54   ⇒   y = -2

  x = -5(-2) -7 = 3

  z = 5 -(3) -(-2) = 4

_____

Additional comment

If all that is needed is a solution, we prefer a graphical or matrix approach. These take about the same amount of time. Both require a little additional effort to determine exact values when the solutions are not integers.

Answer:

Step-by-step explanation:

130 + 125 + 191 = 446, so choice (C)

Hope that helps!

Answer:

37 pls brain list me pls.

Answer:

[tex]\frac{64}{27}[/tex]

Step-by-step explanation:

We can use the "keep-change-flip" method to divide fractions

   Keep: [tex]\frac{8}{9}/\frac{3}{8}[/tex]

Change: [tex]\frac{8}{9}*\frac{3}{8}[/tex]

      Flip: [tex]\frac{8}{9}*\frac{8}{3}[/tex]

Now we can solve by multiplying across:

[tex]\frac{8}{9}*\frac{8}{3} =\frac{8*8}{9*3} =\frac{64}{27}[/tex]

Answer:

2 10/27

Step-by-step explanation:

8/9 / 3/8 = 8x8 / 9 x 3 = 64/27

64/27 = 2 10/27

Answer:

13.375

Step-by-step explanation:

13+3/8=13+0.375

therefore

ans

=13.375

Answer:

its be 9th of square centimeter

Answer:

36 cm hope this helps

Step-by-step explanation:

3×3=9×4=36

Using the binomial distribution, it is found that there is a 0.2617 = 26.17% probability that at least 8 but at most 10 students will complete their assignments before the due date.

For each student, there are only two possible outcomes, either they complete the assignment, or they do not. The probability of a student completing the assignment is independent of any other student, hence the binomial distribution is used to solve this question.

The formula is:

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The parameters are:

In this problem:

The probability is:

[tex]P(X \geq 8) = P(X = 8) + P(X = 9) + P(X = 10)[/tex]

In which:

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 8) = C_{10,8}.(0.65)^{8}.(0.35)^{2} = 0.1757[/tex]

[tex]P(X = 9) = C_{10,9}.(0.65)^{9}.(0.35)^{1} = 0.0725[/tex]

[tex]P(X = 10) = C_{10,10}.(0.65)^{10}.(0.35)^{0} = 0.0135[/tex]

Then:

[tex]P(X \geq 8) = P(X = 8) + P(X = 9) + P(X = 10) = 0.1757 + 0.0725 + 0.0135 = 0.2617[/tex]

0.2617 = 26.17% probability that at least 8 but at most 10 students will complete their assignments before the due date.

More can be learned about the binomial distribution at https://brainly.com/question/14424710

Answer:

x=3

Step-by-step explanation:

6x+5=3x+14

Group like terms:

6x-3x=14-5

3x=9

Divide both sides by 3 to get x:

x=3

Answer:

1:4

Step-by-step explanation:

4 ÷ 4 = 1

16 ÷ 4 = 4

4:16 ratio simplified is 1:4

Answer:

Step-by-step explanation:

What is the

scale factor?

4cm 16cm

4 : 16

semplified

1 : 4

Answer:

You're ANSWER IS CORRECT !

( A )

Step-by-step explanation:

[tex]\frac{(x-9)(5)(x-3)}{x-3} = \frac{2(5)(x-3)}{5}[/tex]

5( x - 9 ) = 2( x - 3 ) -- cross multiply

5x - 45 = 2x - 6

OR...

2x - 6 = 5x - 45

Answer: 18 and 99 degrees

Step-by-step explanation:

The sum of the measures of the other 2 angles is 360 - 219 - 24 = 117 degrees.

So the other two angles measure (2/13)(117)=18 degrees and (11/13)(117)=99 degrees

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Answer:

(4x -25), (2x + 11)

Step-by-step explanation:

STEP1: Equation at the end of step 1

(23x2 - 6x) - 275

STEP2: Trying to factor by splitting the middle term

 2.1     Factoring  8x2-6x-275 

The first term is,  8x2  its coefficient is  8 .

The middle term is,  -6x  its coefficient is  -6 .

The last term, "the constant", is  -275 

Step-1 : Multiply the coefficient of the first term by the constant   8 • -275 = -2200 

Step-2 : Find two factors of  -2200  whose sum equals the coefficient of the middle term, which is   -6 .

     -2200   +   1   =   -2199     -1100   +   2   =   -1098     -550   +   4   =   -546     -440   +   5   =   -435     -275   +   8   =   -267     -220   +   10   =   -210     -200   +   11   =   -189     -110   +   20   =   -90     -100   +   22   =   -78     -88   +   25   =   -63     -55   +   40   =   -15     -50   +   44   =   -6   That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -50  and  44 

                     8x2 - 50x + 44x - 275

Step-4 : Add up the first 2 terms, pulling out like factors :

                    2x • (4x-25)

              Add up the last 2 terms, pulling out common factors :

                    11 • (4x-25)

Step-5 : Add up the four terms of step 4 :

                    (2x+11)  •  (4x-25)

             Which is the desired factorization

Final result :

(4x - 25) (2x + 11)

Hope this helps a bit

[tex]\\ \rm\hookrightarrow \dfrac{1}{2}(Sum\:of\: parallel\:sides)(Height)=133[/tex]

[tex]\\ \rm\hookrightarrow \dfrac{1}{2}(x+5+3x-2)(2x-3)=133[/tex]

[tex]\\ \rm\hookrightarrow 4x+3(2x-3)=266[/tex]

[tex]\\ \rm\hookrightarrow 4x(2x-3)+3(2x-3)=266[/tex]

[tex]\\ \rm\hookrightarrow 8x^2-12x+6x-9=266[/tex]

[tex]\\ \rm\hookrightarrow 8x^2-6x-275=0[/tex]

So in this case f(x) is number of pollinated flowers and x is the days. First you will need to determine the number of flowers pollinated at days 4 and 10 and the days in between.  f(4)= 3(4^2)= 3*16 = 48  f(5)= 3(5^2)= 3*25 =75  f(6)= 3(6^2)=3*36=108  f(7)= 3(7^2)=3*49=147  f(8)= 3(8^2)=3*64=192  f(9)= 3(9^2)= 3*81=243  f(10)= 3(10^2)=3*100=300    Now we need to find the average increase, so that will be the average of the differences between days  [(75-48)+(108-75)+(147-108)+(192-147)+(243-192)+(300-243)]/6  =(27+33+39+45+51+57)/6=42

Answer:

$1092.96

Step-by-step explanation:

Based on the given conditions, formulate: 990 × ( 1 + 2 × 5.2% )

Calculate the product or quotient: 990 × ( 1 + 0.104 )

Calculate the sum or difference: 990 × 1.104

Calculate the product or quotient: 1092.96

Round the number: 1092.96

Answer: $1092.96

Answer: Listed Below

Step-by-step explanation:

3.12 x 3.6 = 11.232

7.65 x 9.3 = 71.145

0.3 x 0.9 = 0.27

Answer:

The following are the answers.

Step-by-step explanation:

1.A; I think the rest are too big to he the diameter of a dinner.

2. B

3.C

4.C

5.B

6.B

7.C

8.C

9. Its basically 1g but you can choose 2g or 0.2g

10. 250g.....but I know it as 100g that is 0.1kg

THIS IS WHAT I THINK THEY ARE......I'M JUST TRYING IT..

Answer:

send me a message I think I can help

have a nice day

Step-by-step explanation:

Answer:

102 minutes=1 hour and 42 minutes

6:45+1 hour and 42 minutes=8:27 p.m.

hence, the answer is 8:27 pm

hope this helped.

Answer:

10.167 yd is equal to 366 in

Answer:

DF = 4

EF = 1.6

Step-by-step explanation:

The scale factor is 1.25 because 5(big shape) ÷ 4(small shape) is 1.25.

To find EF, 2÷1.25 = 1.6

Answer:

8 + w

The sum of 8 and w.