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4 years ago

200 - 50 - [4 x (3+5)]

Mathematics

1 answer:

Juliette [100K]4 years ago

3 0

Answer:

122

Step-by-step explanation:

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What is the solution of the system? Use any method.<br><br> 3x + 2y = 7<br> y = –3x + 11

Gnom [1K]

Answer:

$(5,-4)$

Step-by-step explanation:

SOLVE BY SUBSTITUTION:

STEP 1: Replace all occurrences of $y$ with $-3x+11$ in each equation.

$-3x+22=7\\y=-3x+11$

STEP 2: Solve for $x$ in the first equation.

$x=5\\y=-3x+11$

STEP 3: Replace all occurrences of $x$ with $5$ in each equation.

$y=-4\\x=5$

6 0

3 years ago

Which equation describes the relationship shown in the table?

Andrew [12]

Answer:

Step-by-step explanation:

i = items sold

p = profit

Based on the table, the profit is twice the number of items sold. Therefore the answer is A. Correct me if I'm wrong. I hope it helps.

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3 years ago

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Test the claim that the proportion of people who own cats is significantly different than 90% at the 0.1 significance level.

miss Akunina [59]

Answer:

The right answer is Option B:

$H_0: \pi=0.9\\\\H_1: \pi\neq0.9$

Step-by-step explanation:

In this case we have to perform a hypothesis test on the proportion of the people owning cats.

The claim is that the proportion is significantly different than 905, what means it can be greater or smaller than 90% to reject the null hypothesis. Because of that, the null hypothesis has to state an equality (H0:p=0.9).

The right answer is Option B:

$H_0: \pi=0.9\\\\H_1: \pi\neq0.9$

4 0

3 years ago

Can I please have help real answers only

yaroslaw [1]

The purple dot goes in the 5. For the green dot count 3! Lines to the left (where there’s no numbers, that’s your left) and there it goes.

4 0

3 years ago

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Is it something like 7x +3

KonstantinChe [14]

Yes it would be something like 7x+3

5 0

4 years ago

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