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liraira [26]
3 years ago
13

What is the value of the expression 18-2 times ( 4 +3)

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
5 0

Answer:

1 2/7

Step-by-step explanation:

18 - 2x(4+3) =

combine like terms in the parentheses

18 - 2x(7) =

Multiply

18 - 14x  (This is the value of the expression)

We can solve for x by setting it equal to zero

18 - 14x = 0

-14x = -18

x = -18/-14

x = 1 2/7

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Step-by-step explanation:

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3 years ago
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Given three positive integers a, b and c such that a² + b² - c² = 1. Let the number of triangles formed with sides a, b and c wi
Akimi4 [234]

Answer:

Step-by-step explanation:

Count pairs (a, b) whose sum of squares is N (a^2 + b^2 = N)

Given a number N, the task is to count all ‘a’ and ‘b’ that satisfy the condition a^2 + b^2 = N.

Note:- (a, b) and (b, a) are to be considered as two different pairs and (a, a) is also valid and to be considered only one time.

Examples:

Input: N = 10

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8 0
3 years ago
A system of equations is shown below:
gtnhenbr [62]
Y = 8x - 2
y = 9x - 7

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- 8x       - 8x
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y = 8x -2
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y = 40 - 2
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The answer is C.
8 0
3 years ago
A woman put $580 into a saving account for one year. The rate of interest on the account was 6.5%. How much was the interest for
svetlana [45]
<span>interest = $580 x 0.065 = $37.70

answer
interest for the year is </span>$37.70
8 0
3 years ago
Rewrite the expressions in each pair so that they have the same base. c) (1 /2)^2x and (1/ 4)^x - 1
just olya [345]
I'm not completely sure but this is what I would do.
evaluate <span>(1/ 4)^x - 1 </span>as is. But change the (1 /2)^2x to (2/4)^2x. This way both fractions have the same denominator and in this sense, the same base. The 2/4 base still evaluates into 1/2 so nothing, mathematically, is being broken here.
7 0
3 years ago
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