Mathematics College

A. using substitution find the value of the remaining unknown in each of the following formulas.

1.t=rs (s + 1) if r=4 and s=5
2.k=6-5q/2g if q=3 and g=8
3.p=a+b-2c if a=2, b=-1 and c=5
4.l=1/x - 2/y + z if x=4, y=6, and z=2/3

Answers

Answer 1

Answer:

Substitution means that we need to replace some of the variables by the given values.

1)  t = rs*(s + 1)      (if r=4 and s=5)

So we just need to replace r by 4 and s by 5 in the equation.

t = 4*5*(5 + 1) = 20*6 = 120

t = 120

2)  k = 6 - 5q/2g     (if q=3 and g=8)

We need to replace q by 3, and g by 8.

k = 6 - (5*3)/(2*8) = 6 - 15/16 = 5.167

k = 5.167

3) p = a + b - 2c   (if a = 2, b = -1, c = 5)

Replacing the variables we get:

p = 2 + (-1) - 2*(5)

p = 2 - 1 - 10 = -9

p = -9

4) I = 1/x - 2/y + z   (if x = 4, y = 6, and z = 2/3)

Replacing the variables we get:

I = 1/(4) - 2/(6) + (2/3)

I = 1/4 - 2/6 + 2/3 =  1/4 - 1/3 + 2/3

I = 1/4 + 1/3 = 3/12 + 4/12 = 7/12

I = 7/12 = 0.583

Related Questions

Please help! What is the population of people?? Answer and explanation please! no links :\

Answers

Answer:

36043.305

Step-by-step explanation:

My brain is so tired I can't-

Multiply all the numbers with the information they gave you, then add them all.

I REALLY HOPE THIS HELPED MY BRAIN NEEDS A BREAK

(9m + 10) x2

please solve this if u do u get 30 points

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Answer:

18m+20

Step-by-step explanation:

Hope this helps ya


John invests $15,000 in a savings account that pays 2.5% simple interest. If John makes no
withdrawals or deposits into the account, how much will be in the account after 9 years?

Answers

Answer:

18,375

Step-by-step explanation:

A standard-size volleyball court has an area of 1,800 square feet. The length of the court is 60 feet. What is the width of the court?

Answers

Answer:

The width of the  court is 30 feet.

Step-by-step explanation:

1800 = 60 x width

width = 1800/60 = 30

4.
In order to purchase a new CD player, Rosa must
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Answers

M >= 85. The >= sign means greater than or equal to.

For brainliest and 100 points and no files or you will be reported and just to get points.

Rearrange the equation so u is the independent variable.

-12u+13=8w-3

w=

Answers

Answer:

w=-[tex]\frac{3u}{2}[/tex]+2

Step-by-step explanation:

Answer:

w = -1.5u + 2

or

w = -3/2u + 2

Step-by-step explanation:

Your goal is to isolate w

-12u + 13 = 8w - 3

      +3             +3

-12u + 16 = 8w

 /8      /8    /8

-1.5u + 2 = w

w = -1.5u + 2

or

w = -3/2u + 2

The cost of 12 oranges and 7 apples is 5.36. Eight oranges and 5 apples cost 3.68. Find the cost of each

Answers

Answer:

Apple costs $0.26

and orange costs $0.32

sorry i don't have time to explain but if u have doubts don't hesitate to ask

Make two equations
O = orange, A = allele
(12O + 7A = 5.36) 2
(8O + 5A = 3.68) 3
Make one of them same coefficient
24O + 14A = 10.72
24O + 15A = 11.04
Subtract both equations
-1A = -0.32
A = 0.32
24O + 14(0.32) = 10.72
24O + 4.48 = 10.72
24O = 6.24, O = 0.26
Solution:
One apple = $0.32
One orange = $0.26

is my answer correct?

Answers

Answer:

yes, it is correct i don't know what else to type i need to type atleast 20 characters to answer

What is the equation relating x and
y together?
X
1
2
3
4
5
-9
-8
-7
-6
-5
y=X-[ ?]

Answers

Answer:

If y=x-?, it'd have to be something like y=X-(1-10) etc.

Step-by-step explanation:

I don't think you're giving us enough, but that should be what it is, try to associate that with the full problem or format.

The ratio of girls to boys in a grade is 6 to 5. If there are 24 girls in the grade, how many students are there altogether?

Answers

Answer:

44

Step-by-step explanation:

24/4=6

5x4 = 20

20+24=44

find the inverse of y=0.3x

Answers

Answer:The inverse is 3.3x

Step-by-step explanation:

Answer:

x times 10

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

3

Step-by-step explanation:

A function g is the incerse of function f if y=f(x), x=g(y)

6×squared plus 15×plus 4×​

Answers

Answer:

56

Step-by-step explanation:

6^2 = 36

36 + 15 = 51

51 + 4 = 56

which of the following is a polynomial?

Answers

Answer:

D.

Step by step explanation:

In mathematics, a polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

(Thanks to ueknfiowlmneuYIBKt for helping! His profile is at https://brainly.com/app/profile/39601187)

Hope this helps!

During the month of April, Samantha Kept
track of the number of days she saw a
hummingbird in her garden. She saw a
hummingbird 18 days during that 30 day
month. Based on this information, how
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during the 180 day summer?

Answers

Answer:

she will see 108 humming birds

Step-by-step explanation:

30x6= 180

so mutiply how many times she sees one in a month by 6

Answer:

3240

Step-by-step explanation:

Help me answer these

Answers

Step-by-step explanation:

y=-2X2 -2X +4

Answer: I answered it it's C

it’s C but you can use Photomath

I need help answering this question above! Nobody is answering it

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Answer:

(54, 27)

Step-by-step explanation:

2y will represent the larger number.

2y + y = 81

3y = 81

y = 27

x = 2y

x = 2(27)

x = 54

x = 54

y = 27

(54, 27)

Write 9.26 a.m in a 24-hour time format

Answers

Answer:

09:26

Step-by-step explanation:

find the value of x

HELP pls .

Answers

Answer:

31°

Step-by-step explanation:

The total triangle is 180°

Subtract 180-(33+116)

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Answers

i think it’s the triangle

Answer:

It would be D.

Step-by-step explanation:

This formula, A=1/2 bh, 1/2 base multiplied by height, is used to find the area of a triangle, therefore, D is the only viable answer.  

How many people ordered beer?

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Answers

Answer:

18 people ordered beer.

Step-by-step explanation:

15 + 3 = 18 people

Answer:

18

Step-by-step explanation:

Add the 15 as well as the three people who purchased both wine and beer. The total for beer purchases would be 18.

Help please question in the picture

Answers

The correct answer is A.

The area of the square with a side length of 19 meters is 361 square meters.

To determine the area of a square, you multiply the length of one side by itself.

In this case, the side length is given as 19 meters.

To calculate the area of a square, you can use the formula:

Area = side length × side length

Area = 19 meters × 19 meters

Area = 361 square meters

So, the area of the square with a side length of 19 meters is 361 square meters.

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https://brainly.com/question/25292087

#SPJ8

Help with this question, please

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Answer:

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Step-by-step explanation:

I'm sorry if it's wrong

stream hala hala by ateez bye

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stream on the ground and gone by rosé bye

Complete the square to find
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x2 - 6x – y + 17 = 0
([?], [])

Answers

Don’t click the link it’s a scam

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(3,8)

Step-by-step explanation:

;)

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Answers

Answer:

53.3333

Step-by-step explanation:

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Maria is 4 ft 2in tall. To find the height of a flagpole, she measured her shadow and the pole's shadow . What is the height h of the flagpole?

Answers

Answer:

25 ft

Step-by-step explanation:

The height of the flagpole, using trigonometric ratio is 25feet.

The tangent of angle C will be the ratio of Maria's height to her shadow.

What is the tangent of an angle?

The tangent of an angle is the ratio of opposite side to the adjacent side.

It is given that,

Her height = 4 ft 2 inch = 25/6 feet

Length of her shadow =10/3 feet

So, tan C = (25/6)/(10/3)

tan C = 5/4

We know that ∠C and  ∠T will be equal

So, tan C = tan T = h/20

5/4 = h/20

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Therefore, The height of the flagpole, using is 25feet.

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Answers

Answer:

129 degrees

Step-by-step explanation:

When we add a right angle (90 degrees) to an acute 39 degree angle we get 129 degrees.

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Answers

Answer:

7 will be the answer.

Step-by-step explanation:

The angles are complementary angles i.e their sum is 90°.

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Answers

Answer:

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Step-by-step explanation:

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Answer:

726

Step-by-step explanation:

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