All categories

3 years ago

Estimate then find the product 4x979

Mathematics

2 answers:

Vlad [161]3 years ago

6 0

Estimate: 4x980= 3920

Actual Product: 3916

Marina86 [1]3 years ago

3 0

The answer. of this product is 4×979=3916.

You might be interested in

Please help! brainliest, rattings, thanks ect, the attachment is posted below

Bad White [126]

For question 3, the answer is f(x)=3x-4.

In question 3, if -7 is f(x), and it is 3x-4, the answer is -1; if -7 is f(x), and the answer is 4x-3, the answer is -1; if -7 is f(x), and it is 1/2x+3, answer is -20; if -7 is f(x), and it is 3x+1/2, the answer is -5/2.

But, if -4 is f(x), and it is 3x-4, the answer is 0; if -4 is f(x), and it is 4x-3, the answer is -1/4.

So f(x)=3x-4 is the answer for question 3.

For question 4, the answer is the last choice.

Like the one above 3x was the rate and -4 is the initial value.

So for this one, 2/3 is the rate and -2 is the initial value.

6 0

3 years ago

What is the solution to the equation 4 + 3/2y = 6?

inn [45]

Answer:

y=4/3

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

I need help! I need to know how to do the work and what the answer is plzzz

tangare [24]

Answer:

36 ft

Step-by-step explanation:

So the proportion of the big triangle is 48:4 or 12:1. So if the small triangle’s height is 3 feet, then 3*12 is 36 feet.

7 0

4 years ago

Read 2 more answers

A physicist examines 25 water samples for nitrate concentration. The mean nitrate concentration for the sample data is 0.165 cc/

xz_007 [3.2K]

Answer:

The 80% confidence interval for the the population mean nitrate concentration is (0.144, 0.186).

Critical value t=1.318

Step-by-step explanation:

We have to calculate a 80% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=0.165.

The sample size is N=25.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

$s_M=\dfrac{s}{\sqrt{N}}=\dfrac{0.078}{\sqrt{25}}=\dfrac{0.078}{5}=0.016$

The degrees of freedom for this sample size are:

$df=n-1=25-1=24$

The t-value for a 80% confidence interval and 24 degrees of freedom is t=1.318.

The margin of error (MOE) can be calculated as:

$MOE=t\cdot s_M=1.318 \cdot 0.016=0.021$

Then, the lower and upper bounds of the confidence interval are:

$LL=M-t \cdot s_M = 0.165-0.021=0.144\\\\UL=M+t \cdot s_M = 0.165+0.021=0.186$

The 80% confidence interval for the population mean nitrate concentration is (0.144, 0.186).

6 0

4 years ago

Use the pythagorean Theorem to prove the three sides of the triangle are the three sides of a right triangle. Show all of your w

weeeeeb [17]

Answer:

$2^{2}$ + $(2\sqrt{3}) ^{2}$ = 4 + 4 * 3 = 16 = $4^{2}$

Step-by-step explanation:

The Pythagorean Theorem states that the two shorter sides of a right triangle squared and added together will equal the longest side (hypotenuse) of the right triangle squared. The longest side of this right triangle is 4, 4 squared is 16. The two shorter sides of the right triangle are 2 and $2\sqrt{3}$ , squared individually would be 4 and 12, and added together they also equal 16. These sides are a valid input for the Pythagorean Theorem, so these three sides are the sides of a right triangle. 2 and $2\sqrt{3}$ being the legs of the right triangle, and 4 being the hypotenuse.

6 0

3 years ago