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3 years ago

Expand and simplify 5(x-1)-3(x+4)

2 answers:

5 0

Question:

Expand and simplify 5(x - 1) - 3(x + 4)

Answer:

1.) Use the distributive property to solve this equation:

5(x - 1) = 5x - 5

3(x + 4) = 3x + 12

2.) Put it in the equation:

5x - 5 - 3x + 12

3.) Group them:

5x - 3x - 5 + 12

4.) Simplify:

2x - 7
which is the answer.

Hope this helped! :))

shepuryov [24]3 years ago

5 0

So first it’s 5x-5-3x-12( got this using distributive property)
Now we simplify by combining like terms so 5x-3x=2x
And -5-12=-17
Ending to be 2x-17

You might be interested in

9/14 divided by 15/2 as a simplest form

Sholpan [36]

Answer:

The answer to this equation would be 3/35 in simplest form.

Step-by-step explanation:

To divide by a fraction, multiply by its reciprocal.

9 /14 ⋅ 2 /15

You then cross simplify 9 & 15 (can be divided by 3 to get 9=3 and 15=5)

This will then leave you with 3/14 & 2/5

Next, you cross simplify 14 & 2, (both can be divided by 2 to get 14=7 and 2=1)

This will then leave you with 3/7 & 1/5

Then multiply $\frac{3 *1}{ 7*5}$

This will then leave you with your answer of 3/35.

I hope this helps! :)

4 0

2 years ago

Read 2 more answers

CONDITIONAL PROBABILITY URGENT?

kirill115 [55]

Senior = 5

Senior but Girls = 4

so P(Senior | Girl) = 4/5

Hope it helps.

6 0

2 years ago

Big babies: The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby boys were weighe

Vedmedyk [2.9K]

Answer:

Yes. The data provide enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

P-value=P(t>2.84)=0.0024

Step-by-step explanation:

Hypothesis test on the population mean.

The claim is that the mean weight of one-year-old boys is greater than 25 pounds.

Then, the null and alternative hypothesis are:

$H_0: \mu=25\\\\H_a:\mu>25$

The significance level is α=0.05.

The sample size is n=354. The sample mean is 25.8 pounds and the sample standard deviation is 5.3 pounds. As the population standard deviation is estimated from the sample standard deviation, we will use a t-statistic.

The degrees of freedom are:

$df=n-1=354-1=353$

The t-statistic is:

$t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{25.8-25}{5.3/\sqrt{354}}=\dfrac{0.8}{0.2817}=2.84$

For a right tailed test and 353 degrees of freedom, the P-value is:

$P-value=P(t>2.84)=0.0024$

As the P-value is smaller than the significance level, the effect is significant and the null hypothesis is rejected.

There is enough evidence to support the claim that the mean weight of one-year-old boys is greater than 25 pounds.

7 0

2 years ago

Which rational number is NOT greater than point A?

kramer

Step-by-step explanation:

) Every positive rational number is greater than 0.

(ii) Every negative rational number is less than 0.

(iii) Every positive rational number is greater than every negative rational number.

(iv) Every rational number represented by a point on the number line is greater than every rational number represented by points on its left.

(v) Every rational number represented by a point on the number line is less than every rational number represented by paints on its right

5 0

3 years ago

Can someone please help me with this thank you

GarryVolchara [31]

Answer:

The skeletal system has many functions. Besides giving us our human shape and features, it:

Allows movement: Your skeleton supports your body weight to help you stand and move. Joints, connective tissue and muscles work together to make your body parts mobile.

Produces blood cells: Bones contain bone marrow. Red and white blood cells are produced in the bone marrow.

Protects and supports organs: Your skull shields your brain, your ribs protect your heart and lungs, and your backbone protects your spine.

Stores minerals: Bones hold your body’s supply of minerals like calcium and vitamin D.

3 0

2 years ago