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3 years ago

What is the answer (3x - 2)=

Mathematics

1 answer:

lora16 [44]3 years ago

5 0

X= -2/3
if your solving for x

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What are two equivalent ratios for 8/10?

Varvara68 [4.7K]

To find this, multiply both the numerator and denominator by the same number. For example, 8 x 8 =64, and 10 x 8=80, so 64/80 would be an example of an equivalent ratio. Others could be 16/20 or 48/60. Hope this helps.

4 0

4 years ago

Read 2 more answers

How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 40% antifreeze

nexus9112 [7]

Let the necessary amount of water be x. Then (1.00)(1 gallon antifreeze) = 0.40(x+1 gallon), or 1 = .40x + .40. Combining like terms: 0.60 = 0.40x.

Then x = 0.60 / 0.40 = 1.5.

Adding 1.5 gallons of water to that 1 gallon of pure antifreeze results in 2.5 gallons of 40% antifreeze.

6 0

3 years ago

I have a pic included someone plz help my math quick

natta225 [31]

Answer:

what is if you need help with ?

4 0

3 years ago

I just need help on part A

ki77a [65]

Answer:

Part A) see the explanation

Part B) The initial value is 60 meters and the slope is 40 m/min (see the explanation)

Step-by-step explanation:

Part A) see the attached figure with letters to better understand the problem

we know that

If two triangles are similar then the ratio of its corresponding sides is proportional

In this problem

triangles ACD and ABE are similar by AA Similarity Theorem

$\frac{AE}{AD}=\frac{BE}{CD}$ ----> equation A

Remember that the slope is equal to divide the change in the y-value by the change in the x-value

The slope AB is equal to $\frac{AE}{BE}$

The slope AC is equal to $\frac{AD}{CD}$

Rewrite the equation A

$\frac{AE}{AD}=\frac{BE}{CD}$

$\frac{AE}{BE}=\frac{AD}{CD}$

therefore

The slope of AB is equal to the slope of AC

Part B)

Let

x ---->the amount of time in minutes

y ----> the depth in meters

Find the initial value

we know that

The y-intercept or initial value is the value of y when the value of x is equal to zero

In this context the y-intercept is the depth of the shark when the time is equal to zero, so is the initial depth of the shark

Looking at the graph

For x=0

y=60 meters

therefore

The initial value is 60 meters

<em>Find the slope</em>

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

Take two points from the graph

C(0,60) and B(1,100)

substitute

$m=\frac{100-60}{1-0}$

$m=40\ m/min$

That means ---->The depth of the shark increases at the rate of 40 meters per minute

7 0

3 years ago

Please help my question is what's in the picture

Oksana_A [137]

J) -1
-1+-1+-1+-1+-1+1+1+1+1+1+1=-1

3 0

3 years ago