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DiKsa [7]
2 years ago
11

What is the value of 4x- 7 when x=4?

Mathematics
2 answers:
kiruha [24]2 years ago
8 0

Answer:

9

Step-by-step explanation:

4(4)-7=16-7=9

Sloan [31]2 years ago
4 0

Answer:

9

Step-by-step explanation:

4x- 7

Let x=4

4*4 - 7

16 -7

9

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The length of a rectangle is 8 m more than 6 times the width. The perimeter is 156 m. Find width.
Alla [95]
<span>width = x
</span><span>length = 6x + 8 

x + 6x + 8 = 156/2
7x + 8 = 78
7x = 78 - 8
7x = 70
x = 70/7
x = 10 m  </span>← width
5 0
3 years ago
Solve for r 5(r-10)= -51
Sloan [31]

Answer:

r= -1/5

Step-by-step explanation:

Step 1: Remove the parentheses (5r-10= -51)

Step 2: Move the constant to the right-hand side and change the sign (5r= -51 + 50)

Step 3: Calculate the sum of -51 +50 (5r = -1)

Last Step: Divide both sides by the equation by 5 (r = -1/5)

4 0
3 years ago
Solve i + j + t (3i - j) = -i + s (j)<br> In the context of Vector Equations of a Line
Oksana_A [137]

Answer:

r = i + j + (-2/3)(3i - j)

Step-by-step explanation:

Vector Equation of a line - r = a + kb ; where r is the resultant vector of adding vector a and vector b and k is a constant

if a = i + j ; b = t(3i - j) and r = -i +s(j)

for this to be true all the vector components must be equal

summing i 's

i + 3ti  = -i; then t = -2/3

j - tj = sj; then s = 1-t; substitue t; s=1+2/3 = 5/3

so r = i + j + (-2/3)(3i - j) which will symplify to -i + 5/3j

3 0
2 years ago
Match the numbers with the correct label
Firdavs [7]

Answer:

a= -3/7

b= -0.2

c = -2/8

Step-by-step explanation:

4 0
3 years ago
Determine the value of c that satisfies the given relation. 3c/1=c/2
worty [1.4K]

Answer:

3c/1=c/2

or, 6c =c

or 5c = 0

or c=0

7 0
3 years ago
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