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3 years ago

Solve each problem by graphing -6x+4y=-12 y=-3

Mathematics

1 answer:

tigry1 [53]3 years ago

7 0

We need to change -6x+4y=-12 into the Y= mx+b form first.

So: y=3/2x-3

Graph that together with y=-3

The ordered pair would be (0,-3)

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6 ÷ 0.5 plss answer<br><br> Marking Brainliest!!

Rudik [331]

Answer:

Step-by-step explanation:

0.5 = 1/2

6 ÷ 0.5 = 12

6 : 1/2 =

6 × 2 = 12

6 0

2 years ago

What values of a and b make the equation true? sqrt(648)=sqrt(2^a•3^b)

Anuta_ua [19.1K]

ANSWER

The value of a and b are:

$a=3,b=4$

EXPLANATION

The expression given to us is

$\sqrt{648} = \sqrt{ {2}^{a} \times {3}^{b} }$

We square both sides of the equation to obtain

$648= {2}^{a} \times {3}^{b}$

We now find the prime factorization of 648 to obtain,

${2}^{3} \times {3}^{4} = {2}^{a} \times {3}^{b}$

We now compare the exponents on both sides of the equation to obtain,

$a=3,b=4$

Therefore the correct option is C

3 0

2 years ago

A data set lists earthquake depths. The summary statistics are nequals300, x overbarequals5.89 km, sequals4.44 km. Use a 0.01

kirza4 [7]

Answer:

Null hypothesis $H_0:\mu=5.00km$

Alternative hypothesis $H_1:\mu\neq 5.00km$

The p value is 0.000517, which is less than the significance level 0.01, therefore we reject the null hypothesis and conclude that population mean is not equal to 5.00.

Step-by-step explanation:

It is given that a data set lists earthquake depths. The summary statistics are

$n=300$

$\overline{x}=5.89km$

$s=4.44km$

Level of significance = 0.01

We need to test the claim of a seismologist that these earthquakes are from a population with a mean equal to 5.00.

Null hypothesis $H_0:\mu=5.00km$

Alternative hypothesis $H_1:\mu\neq 5.00km$

The formula for z-value is

$z=\frac{\overline{x}-\mu}{\frac{s}{\sqrt{n}}}$

$z=\frac{5.89-5.00}{\frac{4.44}{\sqrt{300}}}$

$z=\frac{0.89}{0.25634351952}$

$z=3.4719$

The p-value for z=3.4719 is 0.000517.

Since the p value is 0.000517, which is less than the significance level 0.01, therefore we reject the null hypothesis and conclude that population mean is not equal to 5.00.

6 0

2 years ago

Lucy's weekly income is $70. she budgets $40 for movies and food and saves the of her income. how much money will she save in 6

vlada-n [284]

Weekly income = 70...she budgets 40 for movies and food.....70 - 40 = 30...that leaves 30 per week that she saves.

1 month = 4 weeks....so 6 months = (6 * 4) = 24 weeks

24 weeks....saving 30 per week = (24 * 30) = $ 720 <===

4 0

3 years ago

Need help pleases 5 stars

Wewaii [24]

Answer:

The third option is the correct answer

Step-by-step explanation:

I am a 100% sure.

Hope this helps....

Have a nice day!!!!

8 0

2 years ago