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earnstyle [38]
3 years ago
5

Evaluate the algebraic expression for the given values of x = 3 and Y =4 7 x - 2y-1​

Mathematics
1 answer:
Travka [436]3 years ago
4 0

Answer:

the answer is 12

Step-by-step explanation:

7x-2y-1. x=3. y=4

7×3-2×4-1

=21-8-1

=12

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Write an equation of the line that passes through (0,4) and (1,2
Aleks04 [339]

Answer:

y = mx + b

y = -2x + 4

Step-by-step explanation:

m = 2 - 4 / 1 - 0 = -2 / 1 = -2

m (slope) = -2

y = mx + b      (0,4)

4 = -2x + 0

<u>-0         - 0</u>

<u>4</u> = <u>-2x</u>

-2   -2

-2 = x

Equation:  y = mx + b

y = -2x + 4

Hope that helps!! Please give me brainliest!!

7 0
3 years ago
Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from a s
lys-0071 [83]

Answer:

1.1888 (8 goes on forever) seconds to travel from the satellite to Earth.

Step-by-step explanation:

It is traveling at 3 x 108 m/s and needs to travel 3.6 x 107 m. 3 x 108=324 and 3.6 x 107=385.2 so 324 m/s for 385.2 m. 385.2/325=1.1888.

5 0
3 years ago
Read 2 more answers
F(x) = 17 - 2x<br> Find f(a + 7)
Fudgin [204]

Answer:

-2a + 3

Step-by-step explanation:

We can substitute a + 7 for x:

f(a + 7) = 17 - 2(a+7) = 17 - 2a - 14 = -2a + 3

4 0
3 years ago
For the following right triangle, find the side length of x. round your answer to the nearest hundredth.
tatyana61 [14]

Answer:

14.87 units

Step-by-step explanation:

The sides of all right triangles share the same relationship known as the Pythagorean Theorem a² + b² = c². Substitute the lengths of the triangle into the theorem and solve for the unknown side. Since the problem does have an attached a picture, assume that a = 10, b = 11, and c = x.

10² + 11² = x²

100 + 121 = 221²

221 = x²

√221 = √x²

14.87 = x

6 0
3 years ago
Thrice the product of two and "Y".
love history [14]

Answer:

6Y

Step-by-step explanation:

We need to solve the statement ' Thrice the product of two and "Y" '.

Thrice means 3 times and product means multiply. It means we have to multiply 3,2 and Y.

Let the result is R. It can be calculated as follows :

R=3\times 2\times Y

We know that, 3×2 = 6

So,

R=6Y

Hence, Thrice the product of two and "Y" is 6Y.

6 0
3 years ago
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