All categories

3 years ago

:)Which number line best shows how to solve -4 -(-6)?

Mathematics

1 answer:

Readme [11.4K]3 years ago

6 0

Answer:

i dont see a # line..

Step-by-step explanation:

hmm hmm

You might be interested in

Find the product. (3x 2 - 5x + 3)(3x - 2)

Romashka [77]

Answer:

9x^3-21x^2+19x-6

Step-by-step explanation:

First you have to distribute the first equation into the second since the two are being multiplied:

(3x^2-5x+3)(3x-2)

9x^3-6x^2-15^2+10x+9x-6

(simplify)

9x^3-21x^2+19x-6

7 0

3 years ago

Tell whether the angles are complementary or supplementary. Then find the value of x.

oksano4ka [1.4K]

Answer:

1) A

2) x = 60

Step-by-step explanation:

1) A cuz complementary these two angles add up to be 90 degrees

2) 2x - 30 = 90

2x = 120

x = 60

7 0

3 years ago

Read 2 more answers

Sally has 56 stamps. Sarah has 3 times as many stamps as Sally. Their brother , Peter has 45 stamps less than Sarah. How many st

aleksandr82 [10.1K]

Answer:

peter will have 123 stamps.

Step-by-step explanation:

This is because 53 times 3 is 159. Sarah has 159 stamps. Subtract 45 from 159 and you will get 123.

7 0

3 years ago

Read 2 more answers

In the past decades there have been intensive antismoking campaigns sponsored by both federal and private agencies. In one study

astra-53 [7]

Answer:

C. z = 2.05

Step-by-step explanation:

We have to calculate the test statistic for a test for the diference between proportions.

The sample 1 (year 1995), of size n1=4276 has a proportion of p1=0.384.

$p_1=X_1/n_1=1642/4276=0.384$

The sample 2 (year 2010), of size n2=3908 has a proportion of p2=0.3621.

$p_2=X_2/n_2=1415/3908=0.3621$

The difference between proportions is (p1-p2)=0.0219.

$p_d=p_1-p_2=0.384-0.3621=0.0219$

The pooled proportion, needed to calculate the standard error, is:

$p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{1642+1415}{4276+3908}=\dfrac{3057}{8184}=0.3735$

The estimated standard error of the difference between means is computed using the formula:

$s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.3735*0.6265}{4276}+\dfrac{0.3735*0.6265}{3908}}\\\\\\s_{p1-p2}=\sqrt{0.00005+0.00006}=\sqrt{0.00011}=0.0107$

Then, we can calculate the z-statistic as:

$z=\dfrac{p_d-(\pi_1-\pi_2)}{s_{p1-p2}}=\dfrac{0.0219-0}{0.0107}=\dfrac{0.0219}{0.0107}=2.05$

z=2.05

4 0

3 years ago

Help please asap!!!!!!!!!

andrey2020 [161]

The answer is 5 i think

8 0

3 years ago