MATHEMATICS HIGH SCHOOL

Solve the equation
40=5(d - 2)

-2(x - 9)= -24

Answers

Answer 1
Answer: 40=5d-10
first, you have to multiply 5 by D and-2 and then , you will get 40=5d-10
then you will combine like terms, like 40+10=5d
then you will get 50=5d and you divide 50 by 5 to get D only, and finally, you will get D=10.
the final answer is D=10





second question,
all you have to do is multiply-2 by x and -9
and then you get -2x+18=-24
then, you have to combine like terms like I did on the first one, which is -2x= -24-18 and then, you will get -2x=-42 and you have to divide 2 by -42 which is x=21
the final answer is x=21.

I am pre sure that it helped you. text me on messages on brainy if you have any questions that you want to ask me.
Answer 2
Answer: 40 = 5(d - 2)
Then distribute the 5.
40 = 5d - 10
Add ten to both sides.
40 + 10 = 5d - 10 + 10
50 = 5d
Then divide 5 by both sides.
50/5 = 5d/5
Answer.
d = 10

~

Next equation.
-2(x - 9) = -24
Distribute the -2.
-2x + 18 = -24
Subtract 18 from both sides.
-2x + 18 - 18 = -24 - 18
-2x = -42
Then divide -2 by both sides.
-2x/-2 = -42/-2
Answer.
x = 21

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Bentuk sederhana dari(5a+7)-(2a+3) adalah
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A student earns $7.50 per hour at her part-time job. She wants to earn at least $200.Enter an inequality that represents all of the possible numbers of hours (h) the student could work to meet her goal.Enter the least whole number of hours the student needs to work in order to earn at least $200
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Let f(x) = 2x, g(x) = x2 + 2, and h(x) = -4x + 3. Find the composite function.

Answers

The compositefunction gof (x) is 4x^2 + 2.

The correct option is b.

What is a composite function?

Let the two functions f(x) and g(x) generate a new function h(x) using an operation.

The operation is a composition of functions and h(x) is a compositefunction.

Given:

Three functions  f(x) = 2x, g(x) = x² + 2, and h(x) = -4x + 3.

To find the compositefunction gof (x), we need to substitute g(x) into f(x) wherever there is an x in f(x).

gof (x) = g(f(x))

= g(2x)

= (2x)²+ 2

= 4x² + 2

Therefore, gof (x) =  4x² + 2.

To learn more about the composite function;

brainly.com/question/29048585

#SPJ7
(g\circ f)(x)=g(f(x))\n\n(g\circ f)(x)=(2x)^2+2=4x^2+2 \Rightarrow B

When the directive word for an essay exam is criticize, it also means to:a. discuss.
b. evaluate.
c. justify.
d. state.

Answers

When the directive word for an essay exam is criticize, it also mean justify. It's justify because you want to give constructive criticism and share your opinions and ideas to also help  as well.
I hope this helped you, I'm sure its correct :)

The number of marbles of different colors stored in a hat is listed below:4 red marbles
10 green marbles
7 blue marbles

Without looking in the hat, Dan takes out a marble at random. He replaces the marble and then takes out another marble from the hat. What is the probability that Dan takes out a blue marble in both draws?

2 / 21
1 / 9
1 / 2
2 / 3

Answers

The answer is 2/21 because he takes out two and you have to add up everything that you originally had.

Answer:

1/9

Step-by-step explanation:

i got it right on the test

Which shows the dimensions of two rectangular prisms that have volumes of 72 cm3 but different surface areas? A. 6 cm by 3 cm by 4 cm; 12 cm by 2 cm by 3 cm B. 2 cm by 4 cm by 9 cm; 9 cm by 4 cm by 2 cm C. 3 cm by 3 cm by 8 cm; 2 cm by 6 cm by 8 cm D. 6 cm by 3 cm by 4 cm; 9 cm by 4 cm by 3 cm

Answers

To solve, lets find the volumes of all of the options...

V=l*w*h

A. 
6*3*4=72cm³
12*2*3=72cm³

B.
2*4*9=72cm³
9*4*2=72cm³

C.
3*3*8=72cm³
2*6*8=96cm³

D.
6*3*4=72cm³
9*4*3=108cm³

We can conclude that C & D aren't the answer, since they contain prisms that don't have a volume of 72cm³.

Now lets solve for the surface area of A and B...

A. 
sA=2(wh+lw+lh)=2(6*3+4*6+4*3)=2(18+24+12)=2(54)=108cm²
sA=2(wh+lw+lh)=2(12*2+3*12+3*2)=2(24+36+6)=2(56)=112cm²


B.
sA=2(wh+lw+lh)=2(2*4+9*2+9*4)=2(8+18+36)=2(62)=124cm²
sA=2(wh+lw+lh)=2(9*4+2*9+2*4)=2(36+18+8)=2(62)=124cm²

A is the only option with both similar volumes of 72cm³ and different surface areas...

Answer=A

Answer:

A

Step-by-step explanation:

A, is the answer

Solve the equation for a: r=a+k/b a= ?

Answers

r = a + k/b

a = r - k/b

a = 1/b (r.b - k)

What polynomial identity should be used to prove that 16^2=(10+6)^2? (A. Difference of Cubes; B. Difference of Squares; C. Square of Binomial; D. Sum of Cubes)

Answers

Answer:

C. Square of Binomial

Step-by-step explanation:

To prove the identity you should use square of Binomial that states the following:

(a+b)^(2)=a^(2)+2ab+b^(2)

Lets prove it, so first take the equation to solve:

(10+6)^(2)

Then square the first term:

(10+6)^(2)=10^(2)

Then multiply by 2 the first and second terms:

(10+6)^(2)=10^(2)+2(10)(6)

Finally square the second term:

(10+6)^(2)=10^(2)+2(10)(6)+6^(2)

Solve the values:

(10+6)^(2)=100+2(10)(6)+6^(2)

(10+6)^(2)=100+120+6^(2)

(10+6)^(2)=100+120+36

(10+6)^(2)=256

And prove the polynomial identity:

16^(2)=256
not difference of cubes since it is 2nd degree
not difference of squares since it is plus
not sum of cubes because 2nd degreee

answer is square of binomial (why do we even need this property, oh well)


C
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