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defon
3 years ago
5

Please help i’ll give brainliest

Mathematics
2 answers:
Len [333]3 years ago
4 0

Answer:

C

Step-by-step explanation:

Angle Bisector means the line is being split in half evenly. So, when angle 3 is 60, so is angle 4. Angles 1 and 2 are both 30 degrees because 30 + 60 equals to 90 degrees.

I hope this helps!

TiliK225 [7]3 years ago
4 0

Answer:

60⁰..................

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The number of bacteria (b) in a batch of refrigerated food is given by the function b(t) = 20t2 − 70t + 300, where t is the temp
nata0808 [166]
We want to combine b(t) and t(h) to create a function that described the number of bacteria, b, as a function of time, h. 
This function can be called b(t(h)), or b(h).
Consider the function b(t), or bacteria as a function of temperature. 
b(t) = 20t² - 70t +300
This describes the number of bacteria, given the temperature.

t(h) described the temperature as a function of time, specifically hours after refrigeration:
t(h) = 2h + 3

Since the time h can tell us the temperature t, and the temperature t can tell us the # of bacteria b, we can create a function that tells us the number of bacteria, b, given hours following refrigeration, h.

To do this, we plug t(h) in for every t in the b(t) function:
b(t(h)) = 20 (2h+3)² - 70(2h+3) + 300
We can also call this function b(h), since we now can express b as a function of h.

Simplify the function:
b(h) = 20 (4h²+12h+9)-14h-210+300
b(h) = 80h² +100h +270

The Answer is B

7 0
3 years ago
Read 2 more answers
Identify the quotient in the form a + bi. HELP ASAP PLEASE!!
Step2247 [10]

Solving the expression \frac{4-5i}{2+3i} we get -\frac{7}{13}-\frac{22i}{13}

So, Option A is correct.

Step-by-step explanation:

We need to solve the expression: \frac{4-5i}{2+3i}

Multiplying and dividing by 2-3i

=\frac{4-5i}{2+3i}*\frac{2-3i}{2-3i}\\=\frac{4-5i*2-3i}{2+3i*2-3i}\\=\frac{4(2-3i)-5i(2-3i)}{(2)^2-(3i)^2}\\=\frac{8-12i-10i+15i^2)}{4-9i^2}\\We\,\,know\,\, i^2=-1\\=\frac{8-12i-10i+15(-1)}{4-9(-1)}\\=\frac{8-15-12i-10i}{4+9}\\=\frac{-7-22i}{13}\\=-\frac{7}{13}-\frac{22i}{13}

So, solving the expression \frac{4-5i}{2+3i} we get -\frac{7}{13}-\frac{22i}{13}

So, Option A is correct.

Keywords: Complex numbers

Learn more about Complex numbers at:

  • brainly.com/question/10736268
  • brainly.com/question/4678474

#learnwithBrainly

8 0
3 years ago
An equation is shown below:
bekas [8.4K]

\quad \huge \quad \quad \boxed{ \tt \:Answer }

  • \texttt{Step 1: 18x − 42 = 2}

  • \texttt{Step 2: 18x = 44 }

____________________________________

\large \tt Solution  \: :

\qquad \tt \rightarrow \: 6(3x - 7) = 2

Step 1 -

\qquad \tt \rightarrow \: 18x - 42 = 2

[ distributive property ]

Step 2 -

\qquad \tt \rightarrow \: 18x = 2 + 42

\qquad \tt \rightarrow \: 18x = 44

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

7 0
1 year ago
Write 4,300 in scientific notation
natita [175]
4,300 is 4.3×
{10}^{3}
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3 years ago
What is the scientific notation of 7,000,000
creativ13 [48]
Your number would be 10 and the exponet would be 6
4 0
3 years ago
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