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ki77a [65]
3 years ago
12

-7(-2x - 3) = 35x=?-8(4x + 3) = 40x=?2(8 - 5x) = -44x=?

Mathematics
1 answer:
STALIN [3.7K]3 years ago
5 0
Use distributive property: multiply the number outside the bracket by each number inside it

1. 14x+21=35 14x=14 x=1
2. -32x-24=40 -32x=64 x= -2
3. 16-10x=-44 -10x=-60 x=6
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HELPPPPP Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropria
Romashka-Z-Leto [24]

The missing parts of the triangle ABC are A = 31.4°, B = 57.4°, C = 91.2°

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Given that a = 8.6 in, b = 13.9 in. and c = 16.5 in. Using cosine rule:

c² = a² + b² - 2abcosC

16.5² = 8.6² + 13.9² - 2(8.6)(13.9) * cosC

C = 91.2°

Also:

a² = b² + c² - 2bccosA

8.6² = 16.5² + 13.9² - 2(16.5)(13.9) * cosA

A = 31.4°

A + B + C = 180° (angles in a triangle)

31.4 + B + 91.2 = 180

B = 57.4°

The missing parts of the triangle ABC are A = 31.4°, B = 57.4°, C = 91.2°

Find out more on equation at: brainly.com/question/2972832

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3 0
1 year ago
Karen wants to buy a $22.50 jacket that is marked 20% off.
romanna [79]

Answer:

discount = price times % off

discount = 22.50 x 0.20

discount = $4.50

Step-by-step explanation:

6 0
2 years ago
Mr. Jackson orders lunches to be delivered to his workplace for himself and some
svetlana [45]

Answer: $34.75

Step-by-step explanation:

n= 6.25x+3.50

n=6.25(5)+3.50

n=31.25+3.50

n=34.75

4 0
3 years ago
Find the equation of the exponential function represented by the table below:
Elden [556K]

Answer:

The equation of the exponential function represented by the table will be:

f(x)= 2(4)^{x}

Step-by-step explanation:

We know the equation of exponential function such as

f(x) = ab^{x}

Put x=0, and y=2 in the function

2 = ab^{0}

2 = a

Also x=1, and y=8 in the function

8 = 2b^{1}

b=4

Thus,

f(x) = ab^{x}

        = 2(4)^{x}

Therefore, the equation of the exponential function represented by the table will be:

f(x)= 2(4)^{x}

7 0
3 years ago
Round 198.4 to 3 significant figures
Umnica [9.8K]
To round to 3 sign. fig. you have to look at your fourth figure, is it between 0-4? If yes, then it´s should be rounded down. Is it between 5-9? If no, then it´s should be rounded up.
Now, in this case the fourth figure is 4, meaning it should be rounded down..
198 is therefore your answer:D
Have a nice day

7 0
3 years ago
Read 2 more answers
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