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3 years ago

Please Help!

Mathematics

2 answers:

Oksana_A [137]3 years ago

6 0

For this one, the best way to answer is to use the question and it will guide us to the answer.

First, you can eliminate two choices:

the problem states that a number minus ten and nine

so you can eliminate B and D because it is 10 minus a number. In math, you can be picky and take the question exactly.

Then, look at the last part, "when decreased by seven." So now look between A and C and see which one is decreasing by 7. Based on that C would be your answer

C) 9(x-10) -7 = 50

Hope this helps!

sergeinik [125]3 years ago

4 0

This question i know. It is C

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Me ayudan con esa ecuacion por sustitucion con la comprobacion pliss

attashe74 [19]

1/2x+3y/4=5 => (1/2)x + (3/4)y = 5

1/5x+3y/2=2 => (1/5)x + (3/2)y = 2

Eliminate the fractional coefficients: Mult. the first equation by 4 and mult. the second equation by 10:

2x + 15y = 20

Multiply the 1st equation by -1:

-2x - 3y = -20
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12y = 0, so y = 0. Then the first equation becomes 2x + 3(0) = 20, or
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Solution is (10,0).

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3 years ago

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sdas [7]

Answer:

Step-by-step explanation:

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2 years ago

Determine the value of x

Mekhanik [1.2K]

Answer:

2√2

Step-by-step explanation:

By using trigonometry,

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x = 4sin 45°

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By using Pythagorean theorem,

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3 years ago

Which of the given values are in the interval (-3,1]?

Vladimir [108]

The values coming in the interval (-3,1] are -2, -1, 0, and 1.

<h3>What is defined as the term interval notations?</h3>

An interval is represented on a number line using interval notation. In all other sayings, it is a method of writing real number line subsets.
An interval is made up of numbers that fall between two specific data set.
Intervals can be categorized according to the numbers in the set.

Interval Open: The endpoints of a inequality are not included in this type of interval.
Interval Closure; The endpoints of a inequality are included in this type of interval.
Interval with Half-Open Doors: This interval contains only one of inequality's endpoints.

The given interval notation is;

(-3,1], it is the case of half open half close.

-3 comes with the open interval, it means its value will not be included in the interval.

1 is with the closed interval, it means its value will be included in the interval.

Thus, the values lying between the interval (-3, 1] are -2, -1, 0, and 1.

To know more about the interval notations, here

brainly.com/question/16768997

#SPJ10

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1 year ago

Find the missing angles a-b. Give reasons for your answers.

Nezavi [6.7K]

b=145 degrees (corresponding angles)

a+145= 180 (straight angles)

a = 180-145

a =35

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3 years ago

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