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3 years ago

Which of the values below has three significant figures?

Mathematics

2 answers:

Studentka2010 [4]3 years ago

3 0

Answer:

B.) 2310

Step-by-step explanation:

A has 4 (zeros in between numbers count)

B has 3

C has 2 (zeros following numbers without a decimal place do not count)

D has 4 (zeros in-between numbers count)

Blizzard [7]3 years ago

3 0

Answer:

I'm not sure but I think it's A and B

Step-by-step explanation:

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The Ratio of two numbers is 3/5, and their sum is 104. What are the 2 numbers?

Rom4ik [11]

Answer:

39 and 65

Step-by-step explanation:

the ratio of the two numbers is 3 : 5

sum the parts of the ratio, 3 + 5 = 8 parts

divide the sum by 8 to find the value of one part of the ratio

104 ÷ 8 = 13 ← value of 1 part of the ratio , then

3 parts = 3 × 13 = 39

5 parts = 5 × 13 = 65

the two numbers are 39 and 65

4 0

2 years ago

Write an algebraic expression for the phrase "thirty less than the product of a number y and four".

zzz [600]

Answer:

30-(y*4)

Step-by-step explanation:

replace thirty with 30. less than is - (minus). the product of a number y and four. replace four with 4. the product is the answer of the multiplication problem. so the multiplication problem here would be y*4. so the full answer is

30-(y*4)

8 0

3 years ago

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For the given function f(x)equals2.8xplus4.4, x is the number of years since 2000 and y (or f(x)) is the percent of students

slega [8]

Use photo math is very useful for things

7 0

3 years ago

What’s the vertex form of F(x)=x^2+2x-3

kupik [55]

Answer:

$\large\boxed{f(x)=(x+1)^2-4}$

Step-by-step explanation:

$\text{The vertex form of a quadratic equation}\ f(x)=ax^2+bx+c:\\\\f(x)=a(x-h)^2+k\\\\(h,\ k)-\text{vertex}\\=====================================$

$\bold{METHOD\ 1:}\\\\\text{convert to the perfect square}\ (a+b)^2=a^2+2ab+b^2\qquad(*)\\\\f(x)=x^2+2x-3=\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1^2-3\\\\f(x)=(x+1)^2-4\\==============================$

$\bold{METHOD\ 2:}\\\\\text{Use the formulas:}\ h=\dfrac{-b}{2a},\ k=f(k)\\\\f(x)=x^2+2x-3\to a=1,\ b=2,\ c=-3\\\\h=\dfrac{-2}{2(1)}=\dfrac{-2}{2}=-1\\\\k=f(-1)=(-1)^2+2(-1)-3=1-2-3=-4\\\\f(x)=(x-(-1))^2-4=(x+1)^2-4$

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4 years ago

What is 66/55 in simplest form?

emmainna [20.7K]

66/55 in simplest form is 6/5. Because... 66÷ 11= 6 55÷ 11= 5

8 0

3 years ago

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