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3 years ago

Need Help Please (b) Solve for x. Show each step of the solution. 3.5(7 – x) + 28 = 97 – 4.5(3x + 21)

Mathematics

1 answer:

leonid [27]3 years ago

4 0

it is 13 1/3 . hope it helps

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In Exercises 15 and 16, tell whether the triangle with the given side

Nata [24]

15. 10 cm, 10 cm, V200 cm : Right Angled Triangle

16. 9 in., 16 in., 25 in. : Not a right angled triangle

Step-by-step explanation:

In order to check whether the given sides form a right angled triangle, we check if the sum of squares of two shorter sides is equal to the square of third longest side.

15. 10 cm, 10 cm, V200 cm

$The\ shorter\ sides\ are\ 10cm\ and\ 10cm\\Let \\a=10\\b=10\\c=\sqrt{200}So,\\c^2=a^2+b^2\\(\sqrt{200})^2=(10)^2+(10)^2\\200 = 100+100\\200 = 200$

The triangle is a right angled triangle.

16. 9 in., 16 in., 25 in.

Here

a = 9 in

b=16 in

c=25 in

So,

$c^2=a^2+b^2\\(25)^2=(9)^2+(16)^2\\625=81+256\\625=337$

The given triangle is not a right angled triangle.

Keywords: Triangle, Right angled Triangle

Learn more about triangle at:

#LearnwithBrainly

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3 years ago

Which expression represents the phrase "twice the sum of a number and three"?

exis [7]

2(n+3)
two times the sum of a number (n) and 3

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3 years ago

Read 2 more answers

I do not understand the 5 question.

WINSTONCH [101]

It is A because y=20x-5 and so it goes up and to the right

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4 years ago

Which of these ratios is not a rate?

Doss [256]

Answer:

i think it is B

Step-by-step explanation:

because that one isn't really a rate as much as the other ones are, its more of a ratio, i'm bad at explaining things, hope its correct :D

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3 years ago

The local Red Cross had a goal of people donating 1000 pints of blood. Each person can usually give 1 pint. What percent of the

BARSIC [14]

Answer:

Step-by-Step Explanation:

if you do a Percent Proportion you will get:

_1__ = _0.1_ 0.1x10=1

1000 100

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4 years ago