. Solve for x. a) 10 - 1/4x - 7 b) 3 (x + 8 ) = 21

Answers

Answer 1

a) 10 - 1/4x = 7

   1/4x = 7 + 10

           = 17

   x = 17/ (1/4)

b) 3 (x + 8 ) = 21

   x + 8 = 21/3

            = 7

   x = 7 - 8

      = -1


Related Questions

HELP AS SOON AS POSSIBLE NEEDS ANSWERS ASAP

Answers

Answer:

C. The mean will increase and ty e median will remain the same.

What is the quotient of 1,078 and 14

Answers

Answer:

77 is the quotient of 1,078 and 14.

Step-by-step explanation:

quotient is the answer to a division problem.

numerator/denominator = quotient

1,078/14 = quotient

1,078/14 = 77

Have a nice day!

Given that events A and B are independent with P(A)=0.3P(A)=0.3 and P(A\cap B)=0.27P(A∩B)=0.27, determine the value of P(B)P(B), rounding to the nearest thousandth, if necessary.

Answers

Answer:

0.9

Step-by-step explanation:

Since A and B are independent  hence;

P(A∩B) = P(A)P(B)

Given the following

P(A∩B) = 0.27

P(A) = 0.3

Required

P(B)

Substitute into the formula;

P(B) = P(A∩B)/P(A)

P(B) = 0.27/0.3

P(B) = 0.9

Hence the value of P(B) is 0.9

The value of P(B) is 0.9

What is probability?

Probabilities are used to determine the chances of events

The given parameters are:

P(A) = 0.3

P(A ∩ B) =0.27

To find the value of P(B), we make use of the following formula

P(A ∩ B) = P(A) * P(B)

So, we have:

0.27 = 0.3 * P(B)

Divide both sides by 0.3

P(B) = 0.9

Hence, the value of P(B) is 0.9

Read more about probability at:

https://brainly.com/question/25870256

Please help with 17 and 18

Answers

17. Domain: x=/ -2, Range: y=/-4
18. Domain: x>=-5, range: y>=-5

Lmk if youd like an explanation

What two number add up to 6 multiply by 8

Answers

the answer is four and two

Help me with this please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

[tex]x = \sqrt{3} \: meters[/tex]

Step-by-step explanation:

Please see the attached pictures for the full solution.

The question could be solve using 2 methods:

1) Looking at the angle 30°

2) Looking at the angle 60°

How much metal was used to make
this can of soup?
3 cm
5 cm

Answers

about 5cm I think is the best choice to make
5cm I believe, I hope I helped

Kayla and Mario are playing with a football at the park on a windy day. Mark throws the football straight up in the air, and a gust of wind blows it 10 feet west and 4 feet south from Mark. If [x y] represents the original location of the football, write a matrix that represents the location of the translated ball.

Answers

Answer:

|x-10 y-4|

Step-by-step explanation:

Let the initial position where the football is thrown up the air be x and y.

After the ball is thrown up the air it moves 10 feet west 4 feet south because of the gust of wind.

Therefore the change in x is by 10 feet west and is at the point x - 10 and the change in y is by 4 feet south and is at the point y - 4.

Thus the matrix representing the position of the football is |x-10 y-4|.

Please mark as brainliest if answer is right

Have a great day, be safe and healthy  

Thank u  

XD

C R E D I T:  mohit890

Which statements are true?

Select each correct answer.

Only some triangles are plane figures.
All triangles are closed figures.
All triangles are polygons.
All triangles have 3 right angles.
All triangles have 3 straight sides.
Multi answer BTW

Answers

Answer:

All Triangles are closed figure polygons that have three straight sides

Step-by-step explanation:

All 2D shapes are plane figures so this one is false. Three right angles are greater than 180 so this is fake. Polygon and closed figures are shapes with three or more closed sides. And triangles have straight sides.

Someone please help me I’ll give out brainliest please dont answer if you don’t know

Answers

Answer:

12

Step-by-step explanation:

−18+6−(−24)

=−12−(−24)

=12

Answer:

-18+6-(-24)

-18+6+24=

-18+30=

12 is the answer

hope this helps

have a good day :)

Step-by-step explanation:

Please help I will give brainliest to whoever gets the answer correct first

Answers

Answer:

Multiple Choice: 2 Points Each

Short Response: 4 Points Each

Step-by-step explanation:

This is a system of equations problem.

The way I solved it was by, first, organizing two equations.

m(23)+s(10)=86 and m(28)+s(5)=76

m = multiple-choice question points

s = short response question points

The first equation is your scores. m(23)+s(10)=86

You had 23 multiple choice questions and 10 short response questions. Your score on the test was 86.

The second equation is your friend's score. m(28)+s(5)=76

They had 28 multiple choice questions and 5 short response questions. They scored a 76 on the test.

Solve m(23)+s(10)=86;m(28)+s(5)=76

23m+10s=86 for m

Add -10s to both sides.

23m+10s+−10s=86+−10s

23m=−10s+86

Divide both sides by 23.

[tex]\frac{23m}{23}=\frac{-10s+86}{23}[/tex]

m=[tex]\frac{-10}{23} s+\frac{86}{23}[/tex]

Substitute [tex]\frac{-10}{23} s+\frac{86}{23}[/tex] for m in 28m+5s=76.

28m+5s=76

28( [tex]\frac{-10}{23} s+\frac{86}{23}[/tex])+5s=76

Simplify both sides of the equation.

[tex]\frac{-165}{23} s+\frac{2408}{23} =76[/tex]

Add [tex]\frac{-2408}{23}[/tex] to both sides.

[tex]\frac{-165}{23} s+\frac{2408}{23} +\frac{-2408}{23} =76+\frac{-2408}{23}[/tex]

[tex]\frac{165}{23} s=\frac{-660}{23}[/tex]

[tex]\frac{\frac{-165}{23}s}{\frac{-165}{23}}=\frac{\frac{-660}{23}}{\frac{-165}{23}}[/tex]

s=4

Substitute 4 for s in m=[tex]\frac{-10}{23}s+\frac{86}{23}[/tex]

m=[tex]\frac{-10}{23}s+\frac{86}{23}[/tex]

m=[tex]\frac{-10}{23}(4)+\frac{86}{23}[/tex]

Simplify both sides of the equation.

m=2

Answer:

m=2 and s=4

This is a lot of work. Can I please actually get brainliest?

If a point is randomly selected from the rectangular area of the graph, what is the probability that it will be in the speckled region? round answer to the nearest whole percentage.
A. 6%
B. 11%
C. 16%
D. 21%

Answers

Answer:

b

Step-by-step explanation:

mark me brainiest

Answer:

b

Step-by-step explanation:

mark him brainiest

What is the value of the expression below when z = 2?
5z^2+3z+7

Answers

Answer: 33

5(2)² + 3(2) + 7

20 + 6 + 7

33

Hope this helps!

A random sample of the residents of two cities were asked whether they are right-handed or left-handed. The table summarizes the responses.
pls

Answers

Answer:

C

Step-by-step explanation:

ASAP
-WILL MARK BRIANIST

Answers

Answer:

$47.06

Step-by-step explanation:

$12.64*3=$37.92 $37.92+$12.64=$50.56 $50.56-$3.50=$47.06

PLEASE HELP DUDE. I JUST NEED THE ANSWER .A scuba diver is 356 feet below the surface of the water. The angle of depression the diver makes with her boat is 39degrees

To the nearest foot, how far is the diver from the boat?

A
566 ft

B
176 ft

C
161 ft

Answers

The answer is A......

The diver is approximately 276.5 feet away from the boat to the nearest foot.

What are trigonometric identities?

There are three commonly used trigonometric identities.

Sin x = Perpendicular / Hypotenuse

Cosec = Hypotenuse / Perpendicular

Cos x = Base / Hypotenuse

Sec x = Hypotenuse / Base

Tan x = Perpendicular / Base

Cot x = Base / Perpendicular

We have,

We can use the tangent function to solve this problem.

Let x be the distance from the boat to the point directly below the scuba diver on the water's surface.

Then we have:

tan(39°) = x/356

Multiplying both sides by 356, we get:

x = 356 tan(39°)

x = 276.5

Therefore,

The diver is approximately 276.5 feet away from the boat to the nearest foot.

Learn more about trigonometric identities here:

https://brainly.com/question/14746686

#SPJ3

Your friend surveyed 100 people who took either vitamin C, zinc, or

Echinacea supplements to prevent getting a cold. The participants

were asked if they had a cold or no cold in the last 30 days.

no cold

cold

total

vitamin C

41

zinc

12

5

17

echinacea

21

total

26

100

What ratio of people in the survey took Echinacea?

Answers

Answer:

27 : 100

Step-by-step explanation:

Given :

__________ no cold ____ cold _____ total

Vitamin C ___ 41 ________ 15 ______ 56

Zinc _______ 12 _________5 ______ 17

Echinacea __ 21 _________ 6 ______ 27

Total ______ 74 _________ 26 ____ 100

The ratio of people who took Echinacea :

Number of people who took Echinacea : total number of people in the survey

From the TOTAL column:

Number of people who took Echinacea = 27

Total Number of people in survey = 100

Hence, ratio equals :

27 : 100

Question 1 of 10
Solve the proportion below.
-X/45=7/9

x=
O A. 5
B. 39
C. 35
O D. 43

Answers

Answer:

B. 35


Explaining:

-X/45 = 7/9

7/9= 0.777777777777778

-X/45 = 0.777777777777778

45 x 0.777777777777778 = 35

-X = 35

The numbers 1-11 are placed in a bag. What is the probability of drawing a even number? PLEASE HELP ASAP

Answers

Answer:

5/11

Step-by-step explanation:

Between numbers 1 - 11, the evens are 2, 4, 6, 8, and 10. Therefore, there are 5 evens.

Out of the eleven choices in the bag, there are 5 possible choices to be picked out of the 11 total choices.

Therefore, the probability of drawing an even number over the number of choices is 5/11.

Suppose chocolate costs $17.60 per kilogram. Karega buys 25 grams of chocolate and Samadhi buys 100 grams of chocolate.
How much more did Samadhi pay for her chocolate?
0.44
1.32
2.20
2.64

Answers

Answer:

The answer is $1.32 :)

Step-by-step explanation:

Answer:

1.32

Step-by-step explanation:

i tested at risk its correct have nice day :>

Each bag of trail mix weighs 3/8 pound. The combined weight of a set of bags is 3 3/4 pounds How many bags are there?

Answers

Answer:

10

Step-by-step explanation:

3/ 8 is 0.375 while 15/4 is 3.75

so I divide 3.75 by 0.375 which is now 10 the answer is 10 bags

Answer:

22

Step-by-step explanation:

(33/4)÷(3/8)

=8.25/.375

=22

the area of a rectangle is x^2 - 13x + 30 find the dimensions and area of the rectangle of the perimeter is 30

Answers

Answer:

The area and perimeter of a rectangle work with steps shows the complete step-by-step calculation for finding the perimeter, area and diagonal length of the rectangle with the length of 5 in 5 i n and the width of 10 in 10 i n using the perimeter, area and diagonal length formulas.

Step-by-step explanation:

What number is opposite of 56

Answers

Answer:

- 56

Step-by-step explanation:

The opposite of a number is its negative value

Then the opposite of 56 is - 56

The opposite of 56 is the negative of -56

If P (A) = 0.24, P(B) = 0.41, and P(A and B) = 0.18, what is P (A or B)?
A. 0.17
B. 0.47
C. 0.59
D. 0.65

Answers

The value of P(A or B) is 0.47. Therefore, option B is the correct answer.

What is the probability?

Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.

Given that, P (A) = 0.24, P(B) = 0.41, and P(A and B) = 0.18.

The formula to find P(A or B) is

P(A or B)=P(A)+P(B)-P(A and B)

P(A or B)=0.24+0.41-0.18

= 0.47

The value of P(A or B) is 0.47. Therefore, option B is the correct answer.

To learn more about the probability visit:

https://brainly.com/question/11234923.

#SPJ2

[tex]\sqrt{80p^3}[/tex]

Answers

Answer:

320√5 it simpleflied

Step-by-step explanation:

Answer:

Answer in the pic!

Mark is a teaher and makes 46,838 a year how much is his monthly gross pay?

Answers

Answer:

$3903.17

Step-by-step explanation:

12 months in a year.

46,838 / 12 = $3903.17

Answer:

3,903.20

Step-by-step explanation:

Divide by 12 because there is 12 moths in a year

3,903.16667

Will mark brainliest ***
FIND THE VOLUME OF THE SPHERE. Use 3.14 for pi. ROUND TO THE NEAREST
WHOLE NUMBER

Answers

Answer:

28716

Step-by-step explanation:

plz mark branliest

Can someone pleaseeee help and if you’re correct i’ll give brainliest

Answers

Answer:

A. 356

Step-by-step explanation:

Answer:

Step-by-step explanation:

how r u in highschool and not know this-

anyways... its 356

how long must the sides of an equilateral triangle be in order for the perimeter to be greater than 45m?

Answers

Answer:

Greater than 15.

Step-by-step explanation:

Answer:

Step-by-step explanation:

P = 3a

3a > 45

a > 15

NO LINKS URGENT Below is the graph of y = f(x) Graph y=-f(x)

Answers

Answer:

Answer is the graph below

Step-by-step explanation:

It is the green line by the way.

If this helps, please mark this as brainliest.

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