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SOVA2 [1]
3 years ago
15

Pls help I don't understand !! !!

Mathematics
2 answers:
KatRina [158]3 years ago
6 0
1/4 * ? = 5
Twenty lengths
NemiM [27]3 years ago
5 0
100cm is equivalent to 1m so 500cm is equivalent to 5m. What you need to do is divide 500cm (5metres) by 25cm (one quarter of a metre). So the number sentence using 'division' should look like 500cm divided by 25cm which equals 20. Don't forget to use proper symbols for division though. Let me know if this helps:)
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Find the slope of the line that is parallel and perpendicular <br><br> -7x-2y=4
Rus_ich [418]

\bf -7x-2y=4\implies -2y=7x+4\implies y=\cfrac{7x+4}{-2}\implies y=\cfrac{7x}{-2}+\cfrac{4}{-2} \\\\\\ y=\stackrel{\stackrel{m}{\downarrow }}{-\cfrac{7}{2}} x-2\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill

\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}} {\stackrel{slope}{-\cfrac{7}{2}}\qquad \qquad \qquad \stackrel{reciprocal}{-\cfrac{2}{7}}\qquad \stackrel{negative~reciprocal}{\cfrac{2}{7}}}

now, what's the slope of a line parallel to that one above?  well, parallel lines have exactly the same slope.

5 0
3 years ago
Suppose that a colony of bacteria starts with 1 bacterium and doubles in number every half hour. how many bacteria will the colo
OverLord2011 [107]
Let a_n represent the number of bacteria after \frac{n}{2} hours.

so

a_0 is the number of bacteria after 0/2 = 0 hours

a_1 is the number of bacteria after 1/2 hours

a_2 is the number of bacteria after 2/2 = 1 hours and so on


so if we list a few terms of this sequence, we have:

a_0=1

a_1=1*2

a_2=1*2*2

a_3=1*2*2*2

a_4=1*2*2*2*2


so clearly, a_n, the number of bacteria after \frac{n}{2} hours, is equal to 2^{n}.
 

 a_4_8 is the number of bacteria after
 
\frac{n}{2}=\frac{48}{2}= 24 hours.

Thus, we calculate  a_4_8, which is 2^{48}.


Answer: the number of bacteria after 24 hours is 2^{48}.

3 0
3 years ago
F(x) = -12x + 5. Find f(-3).​
JulijaS [17]

Answer:

f(-3) = 41

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = -12x + 5

f(-3) is x = -3

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    f(-3) = -12(-3) + 5
  2. Multiply:                               f(-3) = 36 + 5
  3. Add:                                     f(-3) = 41
5 0
3 years ago
Read 2 more answers
HELP please help me with my spring break packet if I get this question right I can go on my school field trip
saul85 [17]
585 in. Is rge total surface area
3 0
3 years ago
A square serving platter has an area of 124 in. 2. Which is the best estimate of the side length of the platter?
inysia [295]

Answer:

The correct answer is 11.1.

Step-by-step explanation:

Given:

Area of square platter 124in^{2}.

If side length of square platter is x.

Then, area=a^{2}.

As per question, area=124inch^{2}.

So, a^{2}=124.

Taking square both the sides, \sqrt{a^{2} }=\sqrt{124}= a=11.13.

Since the decimal is given in the hundredth position, we can estimate the value to the nearest tenth of a decimal.

Here, the hundredth place has the digit 3.

As 3 is less than 5, we don't add any number to the neighboring digit 1.

So, 3 becomes 0  and the number 11.13 becomes 11.10 and hence 11.1.

Therefore, the correct answer is 11.1

.

4 0
3 years ago
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