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ollegr [7]
2 years ago
15

HELP ME !! AND EXPLAIN HOW YOU GOT IT.

Mathematics
1 answer:
ruslelena [56]2 years ago
3 0

Answer:

<h2>D = 75°</h2><h2>E = 37°</h2><h2>F = 68 ° Given </h2>

Step-by-step explanation:

(13x - 3) + (6x + 1) + (68) = 180 \\ 19x + 66 = 180 \\ 19x = 180 - 66 \\ x =  \frac{114}{19}  \\ x = 6 \\  \\  \\ d = 13x  - 3 \\ d = 13(6)  - 3 \\ d = 75 \\  \\ e = 6x + 1 \\ e = 6(6) + 1 \\ e = 37 \\  \\ f = 68 \\  \\ check \:  \:  \: 75 + 37 + 68 = 180

I hope that is useful for you :)

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Let f(x)=3x-7 and g(x)=2x². Perform the function operation and then find the domain of the result.
olya-2409 [2.1K]

Answer: A

Step-by-step explanation:

f(x)=3x-7\\g(x)=2x^2

(f-g)(x)=3x-7-(2x^2)\\(f-g)(x)=3x-7-2x^2\\(f-g)(x)=-2x^2+3x-7

6 0
2 years ago
63,825 in scientific notation
valentinak56 [21]
In scientific notation, in would be 6.3825*10 to the 4th power
7 0
3 years ago
Someone help me with this pls
Mumz [18]

Answer:

There will be approx 283908 hits.

Step-by-step explanation:

A website had 342,000 hits in 2011.

This is a decline of 2.3% from the previous year.

Decline rate = 2.3% or 0.023

So, increase rate will be 1-.023=0.977

Time = 2019-2011=8

We can calculate the answer as:

342000\times(0.977)^{8}

= 342000\times0.83014

= 283907.88 rounding to 283908.

Therefore, there will be approx 283908 hits.

4 0
3 years ago
Selena and Drake are evaluating the expression , when . Selena's Work Drake's Work Who is correct and why? Selena is incorrect b
Shtirlitz [24]

Answer:

Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables.

I did this lesson i asked my teacher to help me but i did this problem on my own so i hope its right :)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Ms. Moran has started an investment club at BSS. $8000 is invested, some at 10%
labwork [276]
The answer can be readily calculated using a single variable, x:

Let x = the amount being invested at an annual rate of 10%
Let (8000 - x) = the amount being invested at an annual rate of 12%

The problem is then stated as:

(x * 0.10) + ((8000 - x) * 0.12) = 900
0.10(x) + ((8000 * 0.12) - 0.12(x)) = 900
0.10(x) + 960 - 0.12(x) = 900
0.10(x) - 0.12(x) = 900 - 960
-0.02(x) = -60
-0.02(x) * -100/2 = -60 * -100/2
x = 6000 / 2
x = 3000

Thus, $3,000 is invested at 10% = $300 annually; and $8,000 - $3,000 = $5,000 invested at 12% = $600 annually, which sum to $900 annual investment.
6 0
2 years ago
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