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3 years ago

John claims the following two expressions are equivalent.

Mathematics

1 answer:

MrRissso [65]3 years ago

3 0

Answer:

the answer is B. He should have only multiplied 3 by –2 resulting in the expression 5y – 6.

Step-by-step explanation:

You might be interested in

[50 points]

Marina86 [1]

Answer:

$\sf \dfrac{1}{10}$

Step-by-step explanation:

From the table:

Total number of Sophomores = 10
Total number of students = 37
Total number of Boys who are Sophomores = 1

$\sf Probability \ of \ an \ event \ occurring = \dfrac{Number \ of \ ways \ it \ can \ occur}{Total \ number \ of \ possible \ outcomes}$

$\sf \implies P(Sophomore)=\dfrac{10}{37}$

$\sf \implies P(Boy \cap Sophomore)=\dfrac{1}{37}$

$\begin{aligned}\sf P(Boy | Sophomore) & = \sf\dfrac{P(Boy \cap Sophomore)}{P(Sophomore)}\\\\ & = \sf \dfrac{1}{37} \div \dfrac{10}{37}\\\\ & = \sf\dfrac{1}{37} \times\dfrac{37}{10}\\\\ & = \sf\dfrac{1}{10}\end{aligned}$

4 0

2 years ago

Solve for v -3+2v=-7

erma4kov [3.2K]

Answer:

therefore the value of V=-6

6 0

3 years ago

Read 2 more answers

When she drives to work, Samantha travels 10 miles in about 15 minutes. Matt travels 23 miles in about 30 minutes. Who has the f

Fantom [35]

Answer:

At 0.77 mi/min, Matt travels faster than Jennifer, who averages

only 0.67 mi/min.

Step-by-step explanation:

Average speed = distance/time

For Samantha,

Average speed = 10/15

Average speed = 0.67 mi/min

For Matt,

Average speed = 23/30

Average speed = 0.77 mi/min

7 0

3 years ago

Evaluate the following expression, when n=-3 and r=-8 −5 + 3(−2r + 4n) Pease answer ASAP

Hunter-Best [27]

Answer:

-8

Step-by-step explanation:

Given that,

n = -3

r = -8

Now we have to find the value of the given expression.

For that, you have to replace n and r with ( -3 ) and ( -8 ) respectively.

Let us solve now.

−5 + 3 ( −2r + 4n )

-5 + 3 ( -2 × -8 + 4 × -3 )

-2 ( 16 - 12 )

-2 × 4

-8

Let me know if you've any other questions. :-)

- Hi1315

3 0

2 years ago

A statistics practitioner in a large university is investigating the factors that affect salary of professors. He wondered if ev

uysha [10]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The null hypothesis is $H_o : \beta_1 = 0$

The alternative hypothesis is $H_1 : \beta_1 \ne 1$

Step-by-step explanation:

From the question we are told that

The number observations is $n = 100$

The annual salary (in dollars) is y

The mean score on teaching evaluation is x

The the relationship between the y and x is

$y = \beta_0 + \beta _1 x + \epsilon$

Where $\beta _1$ is the mean of the equation so

The null hypothesis is $H_o : \beta_1 = 0$

The alternative hypothesis is $H_1 : \beta_1 \ne 1$

6 0

2 years ago