4.79+ what=37 100-what=52.7

Answers

Answer 1

Answer: 4.79 + x = 37
-4.79 -4.79 4.79 + 32.21=37
x=32.21

100 - x =52.7
-100 -100 100- 47.3=52.7
-x= -47.3
-x -x
x= 47.3

Answer 2

Answer: Question 1)

solve your equation step-by-step.

4.79+x=37100

Simplify both sides of the equation.

x+4.79=37100

Subtract 4.79 from both sides.

x+4.79−4.79=37100−4.79

x=37095.21

Question 2)

solve your equation step-by-step.

100−x=52.7

Simplify both sides of the equation

100−x=52.7

100+−x=52.7

−x+100=52.7

Subtract 100 from both sides.

−x+100−100=52.7−100

−x=−47.3

Divide both sides by -1.

−x−1=−47.3−1

x=47.3

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Can someone help me find the constant? L varies directly as h; when l=112, h=-16

Answers

it varies directly
that means that when when L goes up, h also increases, when L decreases, h also decreases
so the constant is k where k=y/x
in this case it is k=L/h so subsitute
L=112
h=-16
k=L/h
k=112/-16
k=-7
the constant is -7

The statement is expressed as
L = kh
where k is constant
In terms of k,
k = L/h
Given L = 112 and h = 16
k = 112/-16 = -7

What is 10x-3-2x=4?
Please...

Answers

switch the -3 on the other side of = and reduce and simply.

so it would be 8x=7
x=7/8

10x-3-2x=4
(Collect like terms)
8x-3=4
(Get x by itself, subtracf 3 from each side)
8x=1
(Divide 1 by 8)
X = 0.125

Is 2/5 - 4/3p equivalent to -4/3p - 2/5

Answers

Answer:

No, they created different solutions.

Step-by-step explanation:

The circumference of the earth is approximately 131,000,000ft write this number in scientific notation and tell how you knew to use a positive or a negative exponent

Answers

U use a negative exponent to write a number smaller than 1, positive exponents are used to write numbers bigger than 1. clearly 131,000,000 is bigger than 1 so we use a postive exponent. there's always a decimal at the end of a whole number. and we move that decimal to the front where the fron value is more thnand one but less than 10. we move the decimal 8 places to the left and u get to 1.31X10^8
1.31 times 10 to the 8th power.

A knife is three times the cost of a spoon.9 spoons and 12 knives cost £82.80.
Work out the cost of 1 knife

Answers

Answer:

cost of knife = £5.52

Step-by-step explanation:

Assume:

Cost of Knife = a

Cost of Spoon = b

a = 3b ----------------------(1)

12a + 9b = £82.80 -------(2)

Substitute equation (1) in equation (2)

12 * (3b) + 9b = £82.80

36b + 9b = £82.80

45b = £82.80

b = £1.84

Therefore, cost of knife = a = 3 * £1.84 = £5.52

Answer: £5.52

Step-by-step explanation: I done this same question as you

A test has 20 questions worth 100 points. The test consists of true/false questionsworth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions are on the test? A. 10 mc, 10 t&f
B. 7 mc, 13 t&f
C. 2 mc, 18 t&f
D. 5 mc, 15 t&f

Answers

answer is D) 5 mc, 15 t&f
you have two unknown variables, thus you need two equations

definitions:
a = quantity of multiple choice questions
b = quantity of true and false questions

100 points = a*11 points/question + b*3 points/question
20 questions = a +b

using 2nd equation, find equation for 'a':
a = 20 - b

substitute this equation for 'a' into 1st equation:
100 = 11a + 3b
100 = 11(20 - b) + 3b
100 = 220 - 11b + 3b
100 - 220 = -8b
-120 = -8b
-120/-8 = b
15 = b

resolve 2nd equation now knowing value of 'b':
a = 20 - b
a = 20 - 15
a = 5

verify solution is correct by substituting values into first equation
11a + 3b = 100
11(5) + 3(15) = 100
55 + 45 = 100
100 = 100 [OK]

verify solution is correct by substituting values into second equation
a + b = 20
5 + 15 = 20
20 = 20 [OK]

Final answer:

There are 5 multiple-choice questions on the test.

Explanation:

The total number of points for the test is 100. Let's assume there are x multiple-choice questions on the test. Each multiple-choice question is worth 11 points. So the total number of points for multiple choice questions is 11x. The remaining points, 100 - 11x, are for the true/false questions, each worth 3 points. To find the number of multiple-choice questions, we need to solve the equation: 11x + 3(20 - x) = 100.

Simplifying the equation gives us: 11x + 60 - 3x = 100. Combining like terms gives us: 8x + 60 = 100. Subtracting 60 from both sides gives us: 8x = 40. Dividing both sides by 8 gives us: x = 5.

Therefore, there are 5 multiple-choice questions on the test.

Learn more about the Number of multiple-choice questions here:

brainly.com/question/20936056

#SPJ12

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