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3 years ago

Urgent!!!!!!!!!! Solve. −9y ≥ 72

Mathematics

2 answers:

blsea [12.9K]3 years ago

7 0

Y≤-8
Is this what you meant?

If so, you divide each term by -9 and then simplify.

JulijaS [17]3 years ago

3 0

Divide -9 from both sides which results in a flip of the sign (dividing or multiplying a negative to both sides results in a flip of the sign!)
You now have
y =< -8

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3 years ago

What is the answer to this equation?

aliya0001 [1]

Answer:

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4 years ago

The position of a model train, in feet along a railroad track, is given by

miv72 [106K]

Answer:

Part a) The speed is $2.5\frac{ft}{sec}$

Part b) After 4 seconds the trains is 24 ft along the track

Part c) $t=6\ sec$

Step-by-step explanation:

we have

$s(t)=2.5t+14$

This is the equation of a line in slope intercept form

where

s(t) is the position of a model train in feet

t is the time in seconds

Part a) How fast is the train moving?

The speed of the train is equal to the slope of the linear equation so

The slope m is equal to

$m=2.5\frac{ft}{sec}$

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The speed is $2.5\frac{ft}{sec}$

Part b) Where is the train after 4 seconds?

For t=4 sec

substitute the value of t in the equation and solve for s

$s(4)=2.5(4)+14=24\ ft$

therefore

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$29=2.5t+14$

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$29-14=2.5t$

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rewrite

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3 years ago

Need help with math. It says to simplify the expression 7(7t+6r+2)

RSB [31]

7 times 7 is 49
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3 years ago

Read 2 more answers

How do i solve (x+3)^1/2=(3x+7)^1/4

deff fn [24]

Step 1: Cross-multiply.
(x+3)^1/2=(3x+7)^1/4
Step 2: Subtract 6x from both sides.
4x+12−6x=6x+14−6x
−2x+12=14
Step 3: Subtract 12 from both sides.
−2x+12−12=14−12
−2x=2
Step 4: Divide both sides by -2.
−2x/−2=2/−2

Answer:
x=−1

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4 years ago