MATHEMATICS HIGH SCHOOL

PLZ HELP ME !What is the decimal equivalent of 3 over 9.?

0 point 2 bar. 0 point 3 bar. 0 point 4 bar. 0 point 5 bar.

Answers

Answer 1
Answer: 0 point 3 bar
__________
Answer 2
Answer: The answer is 0 point 3 bar.

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Solve the equation: 12y = 132. A. y = 11B. y = 11/12C. y = 144D. y = 1/11C

The number of cell phones sold by a store on consecutive days of a month is shown below:25, 13, 16, 34, 13, 31, 16, 34, 19, 22, 13, 28, 19, 16, 22, 16, 13, 16, 13, 16

Sam created the following incorrect dot plot to represent the data:


What should Sam do to make the dot plot correct?

Put another dot on 13
Put another dot on 16
Delete one dot on 22
Delete one dot on 34

Answers

B. Put another dot on 16

There are 6 16s in the sequence, but only five dots on the graph.

The distances (y), in miles, of two cars from their starting points at certain times (x), in hours, are shown by the equations below:Car A
y = 60x + 10

Car B
y = 40x + 70

After how many hours will the two cars be at the same distance from their starting point and what will that distance be?

2 hours, 150 miles
2 hours, 190 miles
3 hours, 150 miles
3 hours, 190 miles

Answers

when the cars are at the same distance from the starting point the y will be the same for both of the equations.
which means that 60x + 10 = 40x + 70

⇒ 60x-40x=70-10 
⇒ 20x=60
⇒ x=3 hours

now that we know the x we can choose an equation and solve it

60x3+10=y⇒
⇒y=180+10
⇒y=190 miles

the correct answer is the last one: 3 hours, 190 miles

Which shows one way to determine the factors of x3 – 9x2 + 5x – 45 by grouping?x2(x – 9) – 5(x – 9)
x2(x + 9) – 5(x + 9)
x(x2 + 5) – 9(x2 + 5)
x(x2 – 5) – 9(x2 – 5)

Answers

x³ - 9x² + 5x - 45

x²(x - 9) - 5(x - 9) ⇒ x³ - 9x² - 5x + 45 INCORRECT
x²(x + 9) - 5(x + 9) ⇒ x³ + 9x² - 5x - 45 INCORRECT

x(x² + 5) - 9(x² + 5) ⇒ x³ + 5x - 9x² - 45 CORRECT
It just needs to be rearranged.

x(x² - 5) - 9(x² - 5) ⇒ x³ - 5x - 9x² + 45 INCORRECT

The answer choice which shows a way to determine the factors by grouping is; x(x² + 5)–9(x² + 5).

Which shows one way to determine the factors of x3 – 9x2 + 5x – 45 by grouping?

According to the task content, the factors of the expression are to be determined by grouping.

On this note, one way to group the factors would be;

x³ + 5x - 9x² -45

Upon factorisation;

x(x² + 5) – 9(x² + 5).

Read more on factorisation by grouping;

brainly.com/question/12675337

#SPJ5

if 30 cents outof every 1 dollar goes to taxes and the rest is net income, what's the ratio of taxes to net income?

Answers

So if 30 cents out of every dollar go to taxes, then the net income is 70 cents out of every dollar. So the ratio of taxes to net income is 30:70 (30 cents taxes to 70 cents net income) which is 3:7

the ratio would be 30:70

What is 7 x 7 x 7 x 7 x 7 x 7 x 7 x 7 in exponential noation

Answers

Answer:  7^8

This is the same as writing 7^8 when using a keyboard.

The exponent 8 refers to how many copies of the base "7" that are multiplied.

A population of insects increases at a rate of 1.5% per day. About how long will it take the population to double?2.5 days
5.0 days
46.6 days
66.7 days
An explanation would be great help.

Answers

The correct answer is:

46.6 days

Explanation:

The general form for exponential growth is

A=p(1+r)^t, where A is the total amount, p is the initial amount, r is the percent of growth, and t is the amount of time (in this case, days).

We do not know the initial amount, the total amount, or the amount of time.  We do know that r, the percent of growth, is 1.5%; 1.5% = 1.5/100 = 0.015:

A=p(1+0.015)^t

We also know we want the total amount, A, to be twice that of the initial amount, p:

2p = p(1+0.015)^t\n2p=p(1.015)^t

Divide both sides by p:

(2p)/(p)=(p(1.015)^t)/(p)\n\n 2=1.015^t

Using logarithms to solve this,

\log_(1.015)(2)=t\n\n46.6=t
Sorry, I tried to answer with a full explanation but the equation function on brainly.com stopped working. Now I can't delete my attempt at an answer with explanation. The correct answer is 46.6 days.
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