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3 years ago

A line passes through (-1, 5) and (1, 3)

Mathematics

1 answer:

Luba_88 [7]3 years ago

6 0

Answer:

y=-x+4

Step-by-step explanation:

3-5/1-(-1) = -1

(y-(-1)) = -1(x-5)

y+1 = -x+5

y= -x +5-1

y= -x + 4

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What's the algebraic expression of "The greatest possible value of 3y is 30"

Gennadij [26K]

If 3y's greatest possible value is 30, that means 3y can't be greater than 30. So it has to be less than or equal to 30.
$3y \leq 30\\
y \leq 10$

8 0

3 years ago

9 times a number has 1 subtracted from it. The result is trebled. The answer is the same if you add 7 to twice the number and mu

Natali [406]

Answer: 4

Step-by-step explanation: 1) You need to first understand the question and a way to do that is to list plainly the information given.

2) Let the number be (X)

3) For the equation from the first sentence given; 3(9x-1)

4) From the second sentence; 7(7+2x)

5) Equating both sentences together, since the question says they are the same 3(9x-1) = 7(7+2x)

6) Opening the bracket/expanding the equation.... 27x-3=49+14x

Solving further we will have 13x = 52

X= 52/13

= 4

3 0

3 years ago

Read 2 more answers

.............................

garri49 [273]

$12x+6 \geq 9x+12$
$12x-9x\geq 12-6$
$3x\geq 6$
$x\geq 6/3$
$x\geq 2$

4 0

4 years ago

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Write a number whose square is between 100 and 150.

storchak [24]

11^2=121
12^2=144
You can write either 11 or 12.

3 0

3 years ago

One day, Karen bought 22 random cans of soup from a grocery store. Suppose that 5% of cans sold at that particular grocery store

zimovet [89]

Answer:

0.6765 = 67.65%

Step-by-step explanation:

This situation can be treated as a binomial model with probability of success (dented can) of p = 0.05.

In 22 random trials, the probability of at least one success is determined by:

$P(X>1) = 1-P(X=0)\\P(X>1) = 1 - (1-p)^{22}\\P(X>1) = 1 - (1-0.05)^{22}\\P(X>1) =0.6765$

The probability that Karen has bought at least one dented can is 0.6765 or 67.65%.

7 0

4 years ago

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