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VARVARA [1.3K]
2 years ago
14

I really need help ASAP! The sum of 8 times a number and 15 is 7 find that number

Mathematics
1 answer:
kirza4 [7]2 years ago
3 0

Answer:

8x+15=7 8x=-8 x =-1

Step-by-step explanation:

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Which method correctly solves the equation using the multiplication property of equality and the reciprocal of One-third? One-th
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Answer:

Step-by-step explanation:

Given the equation \frac{1}{3}(x+9) = -12

Step 1;

Expand the bracket at the right hand side of the equation to have:

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Taking the reciprocal of both sides:

\frac{3}{x} = \frac{-1}{15} \\ cross\ multiplying\\-x =45\\x=-45

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3 years ago
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Why?

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3 years ago
Consider isosceles ΔXYZ.
Rom4ik [11]

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The length of the legs XY and YZ is equal to 39 units.

<h3>What is a triangle?</h3>

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to 180°. An isosceles triangle has two sides out of three equal.

A.) The value of n can be found by equating XY and XZ together,

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The length of different legs of the triangle is,

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C.) YZ = 15n - 6 = 15(3) - 6 = 45 - 6 = 39

Hence, the length of the legs XY and YZ is equal to 39 units.

Learn more about Triangle:

brainly.com/question/2773823

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6 0
1 year ago
The sum of three times a number d and 5 is 17?
andre [41]

Answer:

3 times 4 + 5 = 17

Step-by-step explanation:

3d+5=17

    -5  -5

________

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__  __

3     3

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3 years ago
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