88) 4 times a number decreased by 8 equals 40
A) x=80 B) x = 40 C) x=8
D) x = 12

Answers

Answer 1
D=12
Because if you write down the equation 4x-8=40 and plug in 12. 4 times 12 is 48
. 48-8 equals 40

Related Questions

2.2.PS-16

Challenge Schools A and B are competing in an academic contest. Correct answers earn 9 points.

Incorrect answers lose 2 points. In the final round, School A gives the same number of correct and

incorrect answers. School B gives no incorrect answers and the same number of correct answers as

School A. School A started the final round with 62 points. School B started with 24. The game ends

with the two schools tied. Let x represent the number of correct answers given by School A in the final

round. Write an equation that models the outcome of the contest. Then find the number of answers

that each school got correct in the final round.

Which equation models the scoring in the final round and the outcome of the contest?

OA. 9x + 2x - 62 = - 9x + 24

OB. 2x-9x + 62 = 9x + 24

OC. 9x - 2x - 62 = 9x + 24

OD. 9x - 2x + 62 = 9x + 24

Answers

Answer:

9x - 2x + 62 = 9x + 24

Number of correct answer each obtained = 19

Step-by-step explanation:

Given that:

Number of correct answers = x

POINTS for correct answers = 9

POINTS for incorrect answers = - 2

SCHOOL A:

Number of correct answers = x

Number of incorrect answers = x

Initial point = 62

Initial point + 9(number of correct answers) + - 2(number of incorrect answers)

62 + 9x - 2x

SCHOOL B :

Number of correct answers = x

Number of incorrect answers = 0

Initial point = 24

Initial point + 9(number of correct answers) + - 2(number of incorrect answers

24 + 9x

Since they end up tied :

School A = School B

62 + 9x - 2x = 24 + 9x

9x - 2x + 62 = 9x + 24

Number of correct answers gotten :

9x - 2x + 62 = 9x + 24

7x + 62 = 9x + 24

7x - 9x = 24 - 62

-2x = - 38

x = 19

Hence, Number of correct answers each obtained = 19

i Wnte 2x2x3x3x5 using exponents.​

Answers

Answer: 2^2 x 3^2 x 5

10 lbs to 6 lbs need percentage
please give step by step

Answers

Answer:

10ibs=1000%   6ibs=600%

Step-by-step explanation:

It’s very easy just use the internet

HELP!!! use Gauss-Jordan elimination to solve the following linear system

-x+6y=20

-x+3y=8

Answers

I solved it using my calculator but you can also solve the matrix by hand.

Check all apply 2x+2-9=5

Answers

Answer:

x=6

Step-by-step explanation:

2x=12 simplify and subtract

x=6

6x^2-19x+3=0

Find both of the x

Answers

X= 1/6 or 0.16 repeating and x also equals 3:)

A designer plans to create a new pattern of stitching a triangular piece of fabric shown in the figure above. She will stitch fabric in a straight line from the vertices of the triangle to the circumcenter of the triangle, located at point C, and then stitch an additional line of fabric back from the circumcenter to each vertex. How much fabric, in inches, will she need in total to create the design? (Note: Answer should be a whole number.)

Answers

Answer:

54

Step-by-step explanation:

The circumcenter is the middle to each vertex. So since they gave you 9 in. and you have to go back and forth on each line, that is 18 in. per line. Considering there are three lines, add all of them together (Or multiple 18 by 3) to get 54 in.

Any other Prepworks questions? :)

If N(k) is the inverse of K(n) and N(12) = 4, then K(4) = 12

Answers

Answer:True

Step-by-step explanation:

PLZ I WILL GIVE BRAINLISTS. Which is a exaplem of a negative number

1
9
-3
14

Answers

Answer:

-3

Step-by-step explanation:

because it has a negitve sign

Answer:

-3

look at this number line

________________________________

-4       -3      -2      -1       0    1     2     3    4

The numbers on the left side of the 0 are negative since they have a value below zero. This can be represented as a   - (negative) sign

Step-by-step explanation:

Keep in mine this number line can continue forever meaning every possible number on the left side of the 0 is negative.

If a quadratic polynomial has an absolute minimum at (-3,-5), what is the range of the polynomial?

Answers

Answer:

range: (-5, ∞)

domain: (-∞, ∞)

Step-by-step explanation:

given vertex, absolute minimum: (-3, -5)

Range look at y-value

(minimum, maximum) the -5 will be on the left  of the comma b/c its the min

If this was a max, you would put the y-value on the right side of the comma

whats 9+10 ??????????????????????

Answers

Answer:

19

Step-by-step explanation:

yerreeer cause u add duh

Answer: Well it depends on what your referring to 10+9 is 109, 9+10 is sometimes considered to be equal to 21 but that is just mere speculation the only answer to make sense has to be 910, but alas the obvious answer was wrong. By entering in the equation on a calculator your answer would be 19. I know math is ridiculous

What is the slope-intercept form of a line that contains the point (-2,-11) with a slope=4?

PLZ HELP I ONLY HAVE 10 minutes left


Answers

Answer:

I believe its c.

Step-by-step explanation:

There using the equation mx+b=y. M is the slope(4), b is the y intercept (3).

Answer:

The correct choice is D.

How many solutions will there be to the following equation?
16x2 = 100
a. more than 2 solutions
b.
no solution
c. 1 solution
d. 2 solutions

Answers

Answer:

d. 2 solutions

+5/2,-5/2

Step-by-step explanation:

16x^2 = 100

x^2=100/16

x^2=25/4

X=√25/4

X=. +5/2,-5/2

So the answer is +5/2,-5/2

there are 120 calories in 2/3 cup. how many calories are in 1 cup?

Answers

Answer: 180

Step-by-step explanation: If of a 2/3 of a cup is 120 then 1/3 of a cup is 60. if 1/3 is 60 the 1 cup is 180.

00:00 The product of 64 and 13 can be rewritten as the sum of two products. Which expression is equal to 64 x 13? A. (60 x 13) + (60 x 4) B. (10 x 60) + (4 x 3) O C. (60 x 13) + (4 x 13) O D. (60 x 1) + (60 x 4)​

Answers

Answer:

∴ The expression which is equal to 64 x 13 is (60 × 13) + (4 × 13) ⇒ C

Step-by-step explanation:

The product of two numbers can be put in the form of the sum of two products by using this rule, m × n =  (a × n) + (b × n), where m = a + b

Let us solve the question using this rule

∵ We need to put 64 × 13 as the sum of two products

→ Let m = 64 and n = 13

m = 64 and n = 13

∵ 64 = 60 + 4

a = 60 and b = 4

→ By using the rule above

∵ m × n = (a × n) + (b × n)

∵ a = 60, b = 4, and n = 13

64 × 13 = (60 × 13) + (4 × 13)

The expression which is equal to 64 x 13 is (60 × 13) + (4 × 13)

In triangle PQR m angle P=60°, and m angle Q=30°, and m angle R=90°. Which of the following statements about triangle PQR are true? Check all that apply.

Answers

Answer: A, C, and F

Step-by-step explanation:

The correct statements about triangle PQR.are given by options A), B), and F) and this can be determined by using the trigonometric functions.

Given :

In triangle PQR, angle P is 60°, angle Q is 30° and angle R is 90°.

The trigonometric functions can be used in order to determine the correct statements about triangle PQR.

[tex]\rm sin30 = \dfrac{PR}{QP}[/tex]

[tex]\rm PQ = 2\;PR[/tex]

[tex]\rm cos30 = \dfrac{QR}{QP}[/tex]

[tex]\rm PR=\dfrac{\sqrt{3} }{2}\;PQ[/tex]

[tex]\rm tan30 = \dfrac{PR}{QR}[/tex]

[tex]\rm \sqrt{3}\; PR= QR[/tex]

[tex]\rm sin60 = \dfrac{QR}{PR}[/tex]

[tex]\rm QR=\dfrac{\sqrt{3} }{2} \;PR[/tex]

[tex]\rm cos60 = \dfrac{PR}{QP}[/tex]

[tex]\rm PR=2\;PQ[/tex]

[tex]\rm tan60 = \dfrac{QR}{PR}[/tex]

[tex]\rm PR=\sqrt{3} \; QR[/tex]

Therefore, the correct option A), B), and F).

For more information, refer to the link given below:

https://brainly.com/question/13710437

3x + 6y = 42 and -7x + 8y = -109 solve by elimination

Answers

Answer:

Point Form

(15,-1/2

Equation Form

x=15 and y= -1/2

Step-by-step explanation:

Which of the following shows only multiples of 12

Answers

Answer:

there is no following

Step-by-step explanation:

Answer: 12,24,36,48,60,72,84,96,108,120,132,144

Step-by-step explanation:

Hope this helps. Could not see the image attached.

helppppp please I will give brainliest​

Answers

Answer:

-3/4 ata di ako sure sa answer ko ha

-3/4 is the answer to your question

The two boxes shown are cuboids.
20 cm
4 cm
30 cm
3 cm
50 cm
10 cm
Work out how many of the smaller boxes you would need
to completely fill the larger one.

Answers

Answer:

250.

The area of the larger box is 30,000 cm squared. Once you find the total area of the small box, divide that by the area of the larger box and you have your answer.

Answer:

205

Step-by-step explanation:

Mr. Smith provides music lessons online for a fee. He charges $15 per lesson plus an initial fee of $30. How many lessons could Jason sign up for if he wants to spend $120?

Wright an equation to represent how many lessons Jason could sign up for. Show all steps to solve the equation. Explain what your final answer means in context of the problem.

Answers

Answer:

2 lesson with a remainer of $30

Step-by-step explanation:

$15 + $30 = $45

$45 multipled by 3 would equal 135 witch is $15 over ,

but $45 multiplyed by 2 would equal $90 with a remainer of $30 (jason could buy some McDonlads with that money , lol)

In a clinical trial of oxycodone, 16 subjects experience headaches among the 227 subjects treated with oxycodone. Construct a 95% confidence interval for the proportion of treated subjects who experience headaches. Provide both probabilistic and practical interpretations. (Hint: this is proportion problem).

Answers

Answer:

95% Confidence Interval = (0.037, 0.104)

Step-by-step explanation:

The formula for Confidence Interval if a proportion is:

p ± z × √p(1 - p)/n

z = z score of a 95% confidence interval = 1.96

p = proportion = x/n

x = 16, n = 227

p = 16/227

p = 0.0704845815

≈ 0.0705

Confidence Interval

= 0.0705 ± 1.96 × √0.0705(1 - 0.0705)/227

= 0.0705 ± 1.96 × √0.0002886773

= 0.0705 ± 0.0333013921

Confidence Interval

= 0.0705 - 0.0333013921

= 0.0371986079

≈ 0.037

= 0.0705 + 0.0333013921

= 0.1038013921

≈ 0.104

Hence, 95% Confidence Interval = (0.037, 0.104)

3÷x-1-3÷x+1=4 solve this equation in in quadratic equation

Answers

Answer: that equation is wrong because ever time I put the equation in the calculator it would not give me the answer, and it will tell me that We think you wrote this 3-:x-1-3-:x+1=4.

may you write the equation a little please, not to mean or anything but it would not give me the answer.

Answer:

no solution

Step-by-step explanation:

How many shelves did Andrew stock per hour?

Answers

Answer:

we dont have the info

Step-by-step explanation:

Please help with the problem in the picture ^ I’ll give brainliest if you give me a small explanation! :)

Answers

Answer: B

Step-by-step explanation: if 24 to 16 is 3:2 then because this is directly proportional it would be that x is 6:4

which statement about 3/4 multiplied by 16/5 is true?

A. The product is greater than 5
B. The product is less than 3/4
C. The product is between 3/4 and 16/5
D. The product is between 16/5 and 5

Answers

Answer:

Option c

Step-by-step explanation:

3/4 multiplied by 16/5

3/4×16/5

12/5

Option c is correct

The product between 3/4 and 16/5

Ken prepared 12 kilograms of dough after working 2 hours. How many hours did Ken work if he prepared 36 kilograms of dough? Assume the relationship is directly proportional.​

Answers

Answer:

36 Kilograms of Dough in 6 hours

Step-by-step explanation:

Each hour Ken prepares 6 kilograms of dough, and every 2 hours Ken prepare 12 kilograms of dough.

Joy hiked 9.8 miles on Saturday and 4.2 miles miles on Sunday. How much farther did Joy hike on Saturday than on Sunday? miles

Answers

Answer:5.6 I think

Step-by-step explanation:yea I just minus them and got that so

9.8-4.2= 5.6
Joy hiked 5.6 more miles on Saturday than on Sunday

Simplify the sum. (10x^5+1x+8)+(2x^5+8x^2+4)

Answers

Answer:

12x^5 + 8x^2 + x + 12

Step-by-step explanation:


Cathy's food usually costs $212.90 a week. One week, it cost $198.98. How
much less money did she spend that week?

Answers

Answer:

$13.92

Step-by-step explanation:

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